/* ==========================================================================
   MetalesPuros — Hoja de estilos principal
   Diseño responsive único (desktop / tablet / móvil)
   Organización:
     1. Tokens (variables)
     2. Reset & base
     3. Utilidades
     4. Barra superior & Navegación
     5. Hero
     6. Secciones & encabezados
     7. Servicios
     8. Proceso / Timeline / Video
     9. Metales & materiales
    10. Nosotros & certificaciones
    11. Testimonios
    12. FAQ
    13. Contacto & formulario
    14. Footer
    15. Componentes flotantes (back-top, progreso, cookie banner)
    16. Animaciones & aparición
    17. Media queries
    18. Print
   ========================================================================== */

/* ==========================================================================
   1. TOKENS DE DISEÑO
   ========================================================================== */
:root {
    /* Colores */
    --primary: #1B2A4A;
    --primary-light: #2A3F6A;
    --primary-dark: #0F1A2E;
    --accent: #B8941F;
    --accent-light: #C9A84C;
    --accent-dark: #9A7B14;
    /* ACC-002: dorado profundo para texto/iconos sobre fondos claros (contraste >= 4.5:1) */
    --accent-contrast: #8A6B0F;
    --bg: #F7F5F0;
    --bg-card: #FFFFFF;
    --bg-alt: #EFECE4;
    --border: #DDD8CC;
    --text: #2C2C2C;
    --text-light: #FFFFFF;
    --text-dim: #6B6B6B;
    --error: #D32F2F;
    --success: #2E7D32;

    /* Sombras */
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.10);

    /* Tipografía */
    --font-display: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Radios */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Movimiento */
    --transition: 0.3s ease;

    /* Layout */
    --container-max: 1200px;
    --container-pad: clamp(16px, 4vw, 32px);
    --navbar-h: 70px;
    --topbar-h: 37px;

    /* Espaciado rítmico consistente (escala 4px) */
    --space-xs: clamp(4px, 1vw, 8px);
    --space-sm: clamp(8px, 2vw, 16px);
    --space-md: clamp(16px, 3vw, 24px);
    --space-lg: clamp(24px, 5vw, 40px);
    --space-xl: clamp(40px, 7vw, 64px);

    /* Áreas seguras (notch / gestos en móvil y Android) */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--navbar-h) + var(--safe-top) + 12px);
    /* Previene ajuste de tamaño en gira/orientación */
    -webkit-text-size-adjust: 100%;
    /* Bloqueo definitivo del scroll horizontal a nivel raíz */
    overflow-x: hidden;
    /* Equivalente a 100vh que respeta barras del navegador móvil */
    -webkit-fill-available: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.7;
    /* Bloqueo definitivo del scroll horizontal */
    overflow-x: hidden;
    max-width: 100%;
    position: relative;
    /* Respeta áreas seguras en teléfonos con notch / Android */
    min-height: 100vh;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Red anti-overflow: cualquier hijo directo que sobresalga se recorta visualmente
   sin romper el scroll vertical del documento. */
img,
svg,
video,
canvas,
iframe,
picture {
    max-width: 100%;
    display: block;
}

/* Prevención de texto que fuerce overflow horizontal */
p, h1, h2, h3, h4, h5, h6, li, span, a {
    overflow-wrap: break-word;
    word-break: break-word;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--primary);
    line-height: 1.25;
    font-weight: 700;
    text-wrap: balance;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

::selection {
    background: var(--accent);
    color: var(--text-light);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }

:focus-visible {
    outline: 2px solid var(--accent-contrast); /* ACC-002: anillo visible sobre fondos claros */
    outline-offset: 3px;
}

/* ==========================================================================
   3. UTILIDADES
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.text-gold { color: var(--accent); }

.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--accent-contrast); /* ACC-004: dorado profundo, texto blanco 5.0:1 */
    color: var(--text-light);
    padding: 8px 16px;
    z-index: 10000;
    font-weight: 600;
}

.skip-link:focus { top: 0; }

/* Barra de progreso de scroll */
#scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    z-index: 9999;
    width: 0;
    transition: width 0.1s linear;
}

/* ==========================================================================
   4. BARRA SUPERIOR & NAVEGACIÓN
   ========================================================================== */
.top-bar {
    background: var(--primary);
    color: var(--text-light);
    text-align: center;
    padding: 8px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.top-bar a { color: var(--accent-light); }

.top-bar-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(12px, 3vw, 24px);
    flex-wrap: wrap;
}

.top-bar i {
    margin-right: 6px;
    color: var(--accent-light);
}

.top-bar-sep { opacity: 0.25; }

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition);
    padding: 0 var(--safe-left) 0 var(--safe-right);
}

/* Navbar fija al hacer scroll (gana en especificidad sobre la regla con top-bar) */
.navbar.scrolled,
.top-bar ~ header .navbar.scrolled {
    top: 0;
    background: rgba(247, 245, 240, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* Ajuste: navbar bajo la barra superior */
.top-bar ~ header .navbar { top: var(--topbar-h); }

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--navbar-h);
    position: relative;
    gap: 16px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    z-index: 1001;
    min-width: 0;
}

.logo span {
    overflow-wrap: anywhere;
}

.logo-5d {
    flex-shrink: 0;
    filter: drop-shadow(0 3px 8px rgba(184, 148, 31, 0.35));
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.5s ease;
    animation: logoFloat5d 3s ease-in-out infinite, logoPulse5d 5s ease-in-out infinite;
}

.logo:hover .logo-5d {
    transform: scale(1.18) rotateY(-10deg) rotateX(6deg) rotateZ(-2deg);
    filter: drop-shadow(0 6px 20px rgba(255, 215, 0, 0.55)) brightness(1.15);
}

.logo-sweep { animation: logoSweep 3.5s ease-in-out infinite; }

.logo-5d-particles .lp1 { animation: particleOrbit1 3s ease-in-out infinite; }
.logo-5d-particles .lp2 { animation: particleOrbit2 3.5s ease-in-out infinite 0.5s; }
.logo-5d-particles .lp3 { animation: particleOrbit3 4s ease-in-out infinite 1s; }
.logo-5d-particles .lp4 { animation: particleOrbit4 3.2s ease-in-out infinite 0.3s; }
.logo-5d-particles .lp5 { animation: particleOrbit5 3.8s ease-in-out infinite 0.7s; }
.logo-5d-particles .lp6 { animation: particleOrbit1 4.2s ease-in-out infinite 1.2s; }
.logo-5d-particles .lp7 { animation: particleOrbit3 3.6s ease-in-out infinite 0.9s; }

.logo-5d-sparkle {
    animation: sparkleFlash 4s ease-in-out infinite;
    transform-origin: center;
}

.logo:hover .logo-5d-sparkle { animation: sparkleFlash 1.5s ease-in-out infinite; }
.logo:hover .logo-5d-body { filter: brightness(1.05); }

.logo-accent { color: var(--accent-contrast); } /* ACC-004: texto dorado sobre fondo claro, 5.0:1 */

/* Menú */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
    align-items: center;
}

.nav-menu a {
    display: inline-flex; /* PACK 1.1: centrado vertical del texto en el objetivo táctil */
    align-items: center;
    padding: 8px 16px; /* PACK 1.1: restaurado del release estable (PACK 1 lo redujo por los chips, ya eliminados) */
    color: var(--text);
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
    min-height: 44px; /* ACC-010: objetivo táctil */
}

.nav-menu a:hover { color: var(--accent-contrast); } /* ACC-004 */
.nav-menu a.active { color: var(--accent-contrast); font-weight: 600; } /* ACC-004: estado activo legible sobre claro */

/* Empuja el CTA a la derecha en escritorio */
.nav-cta-wrap {
    margin-left: auto;
    padding-left: 16px;
}

/* Botón CTA de escritorio */
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-contrast); /* ACC-001: CTA del header, blanco 5.0:1 (antes 2.8:1) */
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 22px;
    min-height: 44px; /* ACC-010: objetivo tactil */
    border-radius: var(--radius-full);
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(184, 148, 31, 0.28);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.nav-cta:hover {
    background: #79600D; /* ACC-001: hover 6.0:1 con blanco */
    color: var(--text-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(184, 148, 31, 0.4);
}

.nav-cta i { font-size: 0.85rem; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    flex-shrink: 0;
    min-width: 44px; /* ACC-010: objetivo táctil (PACK 1) */
    min-height: 44px; /* ACC-010: objetivo táctil (PACK 1) */
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.nav-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* ==========================================================================
   5. HERO
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--navbar-h) + var(--topbar-h) + var(--safe-top) + 30px) var(--container-pad) 40px;
    overflow: hidden;
    background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 50%, #1E3355 100%);
    color: var(--text-light);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(184, 148, 31, 0.1) 0%, transparent 70%);
}

.hero-shape-1 { width: 600px; height: 600px; top: -200px; right: -200px; }
.hero-shape-2 { width: 400px; height: 400px; bottom: -100px; left: -100px; }
.hero-shape-3 {
    width: 300px; height: 300px;
    top: 40%; left: 50%;
    transform: translate(-50%, -50%);
}

/* Layout de dos columnas: texto | producto */
.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: clamp(24px, 3.5vw, 48px);
}

.hero-text { min-width: 0; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(184, 148, 31, 0.15);
    border: 1px solid rgba(184, 148, 31, 0.35);
    padding: 7px 18px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    color: var(--accent-light);
    font-weight: 600;
    letter-spacing: 0.4px;
    margin-bottom: 20px;
}

/* Título completo, sin cortes */
.hero h1 {
    font-size: clamp(2rem, 4.4vw, 3.4rem);
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.1;
    color: var(--text-light);
    letter-spacing: -0.5px;
    max-width: 100%;
    overflow-wrap: break-word;
    hyphens: manual;
}

.hero-subtitle {
    font-size: clamp(0.98rem, 1.5vw, 1.1rem);
    color: rgba(255, 255, 255, 0.8);
    max-width: 540px;
    margin: 0 0 26px;
    line-height: 1.65;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

/* Mini-badges de confianza bajo los botones */
.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(14px, 2vw, 22px);
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-trust span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
}

.hero-trust i {
    color: var(--accent-light);
    font-size: 0.9rem;
}

/* ===== Columna visual: lingote protagonista +30% ===== */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 420px;
    height: 100%;
}

.hero-visual-glow {
    position: absolute;
    width: 95%;
    aspect-ratio: 1;
    max-width: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.22) 0%, rgba(184, 148, 31, 0.06) 45%, transparent 70%);
    filter: blur(8px);
}

.hero-ingot {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: auto;
    filter: drop-shadow(0 25px 45px rgba(0, 0, 0, 0.45));
    animation: ingotFloat 5s ease-in-out infinite;
}

.hero-sparkle circle {
    animation: sparklePulse 2.4s ease-in-out infinite;
}
.hero-sparkle circle:nth-child(2) { animation-delay: 0.5s; }
.hero-sparkle circle:nth-child(3) { animation-delay: 1s; }
.hero-sparkle circle:nth-child(4) { animation-delay: 1.5s; }

/* ===== Estadísticas como tarjetas flotantes integradas en el hero ===== */
.hero-stat {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.97);
    color: var(--primary);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.38);
    z-index: 2;
    backdrop-filter: blur(4px);
}

.hero-stat i {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(184, 148, 31, 0.18), rgba(184, 148, 31, 0.06));
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.hero-stat strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.15;
}

.hero-stat span {
    display: block;
    font-size: 0.75rem; /* ACC-007: minimo 12px en etiquetas flotantes */
    color: var(--text-dim);
    line-height: 1.2;
}

/* Posiciones distribuidas alrededor del lingote */
.hero-stat-1 {
    top: 4%;
    left: -6%;
    animation: floatBadge 4.5s ease-in-out infinite;
}

.hero-stat-2 {
    top: 44%;
    right: -8%;
    animation: floatBadge 4.5s ease-in-out infinite 1s;
}

.hero-stat-3 {
    bottom: 6%;
    left: -2%;
    animation: floatBadge 4.5s ease-in-out infinite 2s;
}

@keyframes ingotFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes floatBadge {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes sparklePulse {
    0%, 100% { opacity: 0.3; transform: scale(0.8); transform-origin: center; }
    50% { opacity: 1; transform: scale(1.3); }
}

/* ==========================================================================
   Botones
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    min-height: 44px; /* ACC-010: objetivo táctil mínimo 44px (WCAG 2.2 AA) */
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: var(--accent-contrast); /* ACC-001: dorado profundo, texto blanco 5.0:1 (antes 2.8:1) */
    color: var(--text-light);
    border-color: var(--accent-contrast);
}

.btn-primary:hover {
    background: #79600D; /* ACC-001: hover más oscuro, mantiene 5.9:1 con blanco */
    border-color: #79600D;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(184, 148, 31, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent); /* ACC-001: solo se usa en hero (fondo navy): 4.9:1, correcto */
    border-color: var(--accent); /* borde no-texto sobre navy: 4.9:1 >= 3:1 */
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--primary); /* ACC-001: navy sobre oro 4.9:1 (antes blanco 2.8:1 FALLA) */
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   6. SECCIONES & ENCABEZADOS
   ========================================================================== */
.section {
    padding: clamp(60px, 9vw, 100px) 0;
    position: relative;
}

.section--alt { background: var(--bg-alt); }

/* ==========================================================================
   Sección de confianza (banda corporativa bajo el hero)
   ========================================================================== */
.trust-section {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.04);
    position: relative;
    z-index: 5;
    margin-top: -1px;
}

.trust-section .container {
    padding-top: clamp(20px, 3vw, 32px);
    padding-bottom: clamp(20px, 3vw, 32px);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(16px, 2vw, 24px);
}

.trust-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 6px 4px;
    min-width: 0;
}

.trust-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(184, 148, 31, 0.12), rgba(184, 148, 31, 0.04));
    border: 1px solid rgba(184, 148, 31, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.15rem;
    flex-shrink: 0;
}

.trust-body {
    min-width: 0;
}

.trust-body strong {
    display: block;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.25;
}

.trust-body span {
    display: block;
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.35;
    margin-top: 2px;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto clamp(40px, 6vw, 60px);
    padding: 0 8px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-contrast); /* ACC-004: etiqueta dorada sobre fondo claro, 4.9:1 */
    border: 1px solid rgba(184, 148, 31, 0.3);
    padding: 4px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-dim);
    font-size: 1rem;
}

/* ==========================================================================
   7. SERVICIOS
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(184, 148, 31, 0.3);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(184, 148, 31, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent);
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.service-card p {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.service-link {
    color: var(--accent-contrast); /* ACC-004: enlace-servicio sobre tarjeta clara, 4.9:1 */
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}

.service-link:hover { gap: 8px; }

/* FASE 1: boton de la zona principal de 4 caminos (objetivo tactil 44px) */
.path-link {
    min-height: 44px; /* ACC-010 */
    padding: 10px 18px;
    margin-top: 8px;
    border: 1px solid var(--accent-contrast);
    border-radius: var(--radius-sm);
}

.path-link:hover {
    background: rgba(184, 134, 11, 0.08);
    gap: 8px;
}

/* ==========================================================================
   FASE 2: Materiales / Proceso / Afinacion - utilidades nuevas
   ========================================================================== */
.materials-ask {
    margin: 18px 0 16px;
    font-weight: 600;
    color: var(--text);
}

.materials-cta { display: flex; flex-wrap: wrap; gap: 12px; }

.section-cta {
    margin-top: clamp(36px, 6vw, 56px);
    padding: clamp(24px, 4vw, 40px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
}

.section-cta-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 18px;
}

.duo-grid,
.modality-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.modality-grid { margin-top: 40px; }

.modality-badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    background: rgba(184, 134, 11, 0.08);
    border: 1px solid rgba(184, 134, 11, 0.3);
    color: var(--accent-contrast); /* ACC-004: dorado oscuro sobre tarjeta clara, 4.9:1 */
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.refine-steps-wrap { margin-top: 40px; }

.refine-steps-wrap h3 { text-align: center; margin-bottom: 22px; }

.refine-steps {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 0;
    padding: 0;
}

.refine-step {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 44px; /* ACC-010: objetivo tactil comodo aunque no sea enlace */
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    color: var(--text);
}

.refine-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--accent-contrast);
    color: var(--text-light); /* 5.0:1 sobre dorado profundo */
    font-weight: 700;
    font-size: 0.8rem;
    flex: none;
}

.refine-step i { color: var(--accent-contrast); }

.refine-steps-note {
    text-align: center;
    margin-top: 14px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.video-soon { margin-top: 40px; text-align: center; }

.video-soon h3 { margin-bottom: 20px; }

.video-soon-box {
    max-width: 560px;
    margin: 0 auto;
    padding: clamp(32px, 6vw, 56px) 24px;
    background: var(--bg-card);
    border: 2px dashed rgba(184, 134, 11, 0.4);
    border-radius: var(--radius-md);
}

.video-soon-box i {
    display: block;
    font-size: 2rem;
    color: var(--accent-contrast);
    margin-bottom: 14px;
}

.video-soon-box p { margin: 0; font-size: 1rem; color: var(--text); }

@media (max-width: 680px) {
    .duo-grid,
    .modality-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   FASE 3: Cotizaciones - valores de referencia (EUR/g)
   Grid 1 col (movil) -> 2x2 (tablet) -> 4 col (escritorio).
   Estados con icono + texto: nunca solo color (WCAG 2.2 AA).
   ============================================================ */
.quotes-disclaimer {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    max-width: 720px;
    margin: 14px auto 0;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--text-dim);
    text-align: left;
}

.quotes-disclaimer i { color: var(--accent-contrast); margin-top: 3px; flex-shrink: 0; }

.quotes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 36px;
}

@media (min-width: 600px) {
    .quotes-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1100px) {
    .quotes-grid { grid-template-columns: repeat(4, 1fr); }
}

.quote-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.quote-card:hover {
    border-color: rgba(184, 148, 31, 0.4);
    box-shadow: var(--shadow-lg);
}

.quote-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.quote-name { font-size: 1.15rem; font-weight: 700; margin: 0; }

.quote-symbol {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent-contrast);
    border: 1px solid rgba(184, 148, 31, 0.45);
    border-radius: 999px;
    padding: 3px 12px;
    letter-spacing: 0.5px;
}

.quote-value {
    display: flex;
    align-items: baseline;
    gap: 7px;
    margin: 6px 0 2px;
    min-height: 52px; /* espacio reservado: la tarjeta no se deforma sin dato */
}

.quote-price {
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 2vw, 2.3rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}

.quote-unit { font-size: 0.95rem; font-weight: 600; color: var(--text-dim); }

.quote-card[data-state="UNAVAILABLE"] .quote-unit,
.quote-card[data-state="LOADING"] .quote-unit { visibility: hidden; }

/* Skeleton de carga: barra tenue sobre el hueco del valor (una sola vez, sin parpadeo) */
.quote-card.is-loading .quote-price::after {
    content: '';
    display: block;
    width: 96px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(100deg, rgba(0,0,0,0.06) 40%, rgba(0,0,0,0.10) 50%, rgba(0,0,0,0.06) 60%);
    background-size: 220% 100%;
    animation: quoteSkeleton 1.4s ease-in-out infinite;
}

@keyframes quoteSkeleton {
    from { background-position: 120% 0; }
    to { background-position: -120% 0; }
}

@media (prefers-reduced-motion: reduce) {
    .quote-card.is-loading .quote-price::after { animation: none; }
}

.quote-state {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    min-height: 30px;
    margin: 0;
}

.quote-state-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-weight: 800;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.quote-state--live .quote-state-icon { background: rgba(30, 125, 60, 0.12); color: #1e7d3c; }
.quote-state--live .quote-state-label { color: #1e7d3c; }
.quote-state--stale .quote-state-icon { background: rgba(138, 105, 20, 0.14); color: #7a5c10; }
.quote-state--stale .quote-state-label { color: #7a5c10; }
.quote-state--unavailable .quote-state-icon { background: rgba(107, 107, 112, 0.12); color: #5b5b60; }
.quote-state--unavailable .quote-state-label { color: #5b5b60; }

.quote-extra { margin: 0; font-size: 0.85rem; color: var(--text-dim); min-height: 1.2em; }

.quotes-note {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.95rem;
    margin: 18px 0 0;
}

.quotes-explain {
    margin-top: clamp(36px, 5vw, 56px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: clamp(20px, 3vw, 32px);
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

.quotes-explain h3 { font-size: 1.15rem; font-weight: 700; margin: 0 0 10px; }

.quotes-explain p { color: var(--text-dim); line-height: 1.7; margin: 0; font-size: 1rem; }

.mini-services {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.mini-service {
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.mini-service:hover {
    border-color: rgba(184, 148, 31, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.mini-icon {
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.mini-service h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.mini-service p {
    color: var(--text-dim);
    font-size: 0.82rem;
}

/* ==========================================================================
   8. PROCESO / TIMELINE / VIDEO
   ========================================================================== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline-progress {
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    height: 0;
}

.timeline-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--accent);
    transition: height 0.1s linear;
    height: var(--progress, 0%);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 0;
}

.timeline-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--text-light);
    font-weight: 700;
    font-size: 0.85rem;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--transition);
}

.timeline-content:hover {
    border-color: rgba(184, 148, 31, 0.3);
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.timeline-icon {
    color: var(--accent);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.timeline-content p {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.process-video {
    max-width: 800px;
    margin: 60px auto 0;
    text-align: center;
    /* Evita desbordamiento del iframe */
    width: 100%;
}

.process-video-title {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 6px;
}

.process-video-title i {
    color: var(--accent);
    margin-right: 6px;
}

.process-video-subtitle {
    color: var(--text-dim);
    font-size: 0.92rem;
    margin-bottom: 20px;
}

.video-player {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition), box-shadow var(--transition);
    width: 100%;
}

.video-player:hover {
    transform: translateY(-4px) scale(1.005);
    box-shadow: 0 12px 50px rgba(0, 0, 0, 0.18);
}

.video-thumbnail-wrap {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--primary-dark);
    cursor: pointer;
    overflow: hidden;
    width: 100%;
}

.video-thumbnail-wrap svg {
    display: block;
    width: 100%;
    height: 100%;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: none;
    background: rgba(138, 107, 15, 0.92); /* ACC-001: icono blanco ~4.9:1 sobre boton de reproduccion */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1.4rem;
    box-shadow: 0 4px 30px rgba(184, 148, 31, 0.4);
    transition: all var(--transition);
    cursor: pointer;
    padding-left: 4px;
}

.video-thumbnail-wrap:hover .play-btn {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--accent-contrast); /* ACC-001 */
    box-shadow: 0 6px 40px rgba(184, 148, 31, 0.6);
}

.video-player iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
}

/* ==========================================================================
   9. METALES & MATERIALES
   ========================================================================== */
.metals-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.metal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
}

.metal-card:hover {
    transform: translateY(-4px);
    border-color: rgba(184, 148, 31, 0.4);
    box-shadow: var(--shadow-lg);
}

.metal-symbol {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-contrast); /* ACC-004: fallback sin background-clip, 4.9:1 sobre tarjeta clara */
    margin-bottom: 8px;
}

.metal-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.metal-card p {
    color: var(--text-dim);
    font-size: 0.88rem;
    line-height: 1.6;
}

.metal-number {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(27, 42, 74, 0.04);
    font-family: var(--font-display);
    line-height: 1;
    pointer-events: none;
}

.materials-accepted {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: clamp(24px, 4vw, 32px);
}

.materials-accepted h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--accent-contrast); /* ACC-004: titulo dorado sobre tarjeta clara, 4.9:1 */
}

.materials-accepted h3 i { margin-right: 8px; }

.tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: rgba(184, 148, 31, 0.08);
    border: 1px solid rgba(184, 148, 31, 0.15);
    font-size: 0.82rem;
    color: var(--accent-dark);
    transition: all var(--transition);
}

.tag:hover { background: rgba(184, 148, 31, 0.15); }

/* ==========================================================================
   10. NOSOTROS & CERTIFICACIONES
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(32px, 5vw, 48px);
    align-items: start;
}

/* Imagen del laboratorio con badge flotante */
.about-media { min-width: 0; }

.about-media-wrap {
    position: sticky;
    top: calc(var(--navbar-h) + 24px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4 / 3;
    background: var(--bg-alt);
}

.about-media-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.about-media-wrap:hover img { transform: scale(1.04); }

.about-media-badge {
    position: absolute;
    left: 16px;
    bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.96);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(4px);
}

.about-media-badge i {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(184, 148, 31, 0.18), rgba(184, 148, 31, 0.06));
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.about-media-badge strong {
    display: block;
    font-family: var(--font-display);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.about-media-badge span {
    display: block;
    font-size: 0.75rem; /* ACC-007: minimo 12px */
    color: var(--text-dim);
}

.about-content .section-tag { margin-bottom: 16px; }

.about-content h2 {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    margin-bottom: 16px;
}

.about-content p {
    color: var(--text-dim);
    margin-bottom: 12px;
    line-height: 1.7;
}

.about-stats {
    display: flex;
    gap: clamp(20px, 4vw, 32px);
    margin-top: 24px;
    flex-wrap: wrap;
}

.about-stat { text-align: center; flex: 1 1 120px; }

.about-stat strong {
    display: block;
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    color: var(--accent-contrast); /* ACC-004: cifras destacadas sobre fondo claro, 4.9:1 */
    font-family: var(--font-display);
}

.about-stat span {
    font-size: 0.82rem;
    color: var(--text-dim);
}

.certifications {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.certifications h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.cert-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    transition: all var(--transition);
}

.cert-card:hover {
    border-color: rgba(184, 148, 31, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.cert-icon {
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.cert-card h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.cert-card p {
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* ==========================================================================
   11. TESTIMONIOS
   ========================================================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition);
}

.testimonial-card:hover {
    border-color: rgba(184, 148, 31, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial-stars {
    color: var(--accent-contrast); /* ACC-004: estrellas transmiten valoracion, 4.9:1 sobre tarjeta */
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.testimonial-text {
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #8A6B0F, #79600D); /* ACC-001: iniciales blancas 5.0-6.0:1 */
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-light);
    flex-shrink: 0;
}

.testimonial-author strong {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
}

.testimonial-author span {
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* ==========================================================================
   12. FAQ
   ========================================================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-item summary {
    padding: 18px 24px;
    cursor: pointer;
    font-weight: 600;
    color: var(--primary);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background 0.2s;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--accent-contrast); /* ACC-004: indicador funcional +/-, 4.9:1 */
    font-weight: 700;
    flex-shrink: 0;
}

.faq-item[open] summary::after { content: '\2212'; }
.faq-item summary:hover { background: rgba(184, 148, 31, 0.04); }
.faq-item[open] summary { border-bottom: 1px solid var(--border); }

.faq-answer {
    padding: 16px 24px;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ==========================================================================
   Sección Nuestra Aplicación Oficial
   ========================================================================== */
.app-section {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: clamp(32px, 5vw, 56px);
    align-items: center;
}

.app-content { min-width: 0; }

.app-content h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    margin-bottom: 14px;
}

.app-lead {
    color: var(--text-dim);
    font-size: 1.02rem;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 560px;
}

.app-features {
    list-style: none;
    display: grid;
    gap: 12px;
    margin-bottom: 28px;
}

.app-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-size: 0.95rem;
}

.app-features i {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(184, 148, 31, 0.1);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.app-actions { margin-bottom: 14px; }

.app-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary);
    color: var(--text-light);
    border: 2px solid var(--primary);
    padding: 14px 28px;
}

.app-download-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(27, 42, 74, 0.3);
}

.app-download-btn.disabled {
    cursor: default;
    opacity: 0.85;
    pointer-events: none;
}

.app-soon {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* Columna visual: código QR */
.app-visual {
    display: flex;
    justify-content: center;
}

.app-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.app-qr svg {
    width: clamp(180px, 22vw, 230px);
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    background: var(--bg-card);
    padding: 12px;
    transition: transform var(--transition);
}

.app-qr svg:hover { transform: scale(1.03); }

.app-qr-label {
    font-size: 0.82rem;
    color: var(--text-dim);
    font-weight: 500;
}

/* ==========================================================================
   13. CONTACTO & FORMULARIO
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: clamp(32px, 5vw, 48px);
    align-items: start;
}

.contact-info-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(184, 148, 31, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.contact-item p {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.contact-item a { color: var(--accent-contrast); } /* ACC-004: enlace sobre tarjeta clara, 4.9:1 */
.contact-item a:hover { text-decoration: underline; }

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: clamp(24px, 4vw, 36px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font-body);
    transition: border-color var(--transition);
    outline: none;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B6B6B' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-contrast); /* ACC-004: foco visible y con contraste */
    box-shadow: 0 0 0 3px rgba(138, 107, 15, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-dim);
    opacity: 0.6;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--error);
}

.field-error {
    display: none;
    color: var(--error);
    font-size: 0.78rem;
    margin-top: 4px;
}

.form-group.has-error .field-error { display: block; }

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding-block: 6px; /* ACC-010: area de golpe generosa para el check legal */
}

.form-check input[type="checkbox"] {
    width: 18px; /* ACC-010: casilla visible y manipulable (antes ~13px nativa) */
    height: 18px;
    margin-top: 2px;
    accent-color: var(--accent-contrast); /* ACC-004 */
    flex-shrink: 0;
}

.form-check label {
    font-size: 0.82rem;
    color: var(--text-dim);
    cursor: pointer;
}

.form-check a { color: var(--accent-contrast); } /* ACC-004: enlaces legales del check, 4.9:1 */
.form-check a:hover { text-decoration: underline; }

.form-error {
    display: none;
    padding: 16px;
    background: rgba(211, 47, 47, 0.06);
    border: 1px solid rgba(211, 47, 47, 0.15);
    border-radius: var(--radius-sm);
    color: var(--error);
    margin-top: 16px;
    font-size: 0.9rem;
}

.form-error.show {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-success {
    display: none;
    text-align: center;
    padding: 32px;
    color: var(--success);
}

.form-success.show { display: block; }

.form-success i {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.form-success h4 {
    color: var(--success);
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.form-success p { color: var(--text-dim); }

/* ==========================================================================
   14. FOOTER
   ========================================================================== */
.footer {
    background: var(--primary-dark);
    padding: 60px 0 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: clamp(24px, 4vw, 40px);
    margin-bottom: 40px;
}

.footer-col .logo {
    margin-bottom: 16px;
    color: var(--text-light);
}

.footer-col > p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer h4 {
    font-size: 0.95rem;
    margin-bottom: 16px;
    color: var(--accent-light);
}

.footer ul { list-style: none; }

.footer ul li {
    margin-bottom: 8px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer ul li a {
    color: rgba(255, 255, 255, 0.55);
    transition: color var(--transition);
}

.footer ul li a:hover { color: var(--accent-light); }

.footer ul li i {
    color: var(--accent-light);
    margin-right: 8px;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   15. COMPONENTES FLOTANTES
   ========================================================================== */
.back-top {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    right: calc(20px + var(--safe-right));
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--accent-contrast); /* ACC-001: control funcional, icono blanco 5.0:1 */
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 899;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.back-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-top:hover { transform: scale(1.1); }

/* Cookie banner (estilizado en index.html inline; aquí clases de respaldo) */
#cookieBanner {
    box-sizing: border-box;
}

#cookieBanner > div {
    max-width: var(--container-max) !important;
}

/* ==========================================================================
   16. ANIMACIONES & APARICIÓN
   ========================================================================== */
.fade-in,
.animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible,
.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes logoFloat5d {
    0%, 100% { transform: translateY(0px) rotateY(0deg); }
    25% { transform: translateY(-2px) rotateY(2deg); }
    50% { transform: translateY(-4px) rotateY(0deg); }
    75% { transform: translateY(-2px) rotateY(-2deg); }
}

@keyframes logoPulse5d {
    0%, 100% { filter: drop-shadow(0 3px 8px rgba(184, 148, 31, 0.35)) brightness(1); }
    33% { filter: drop-shadow(0 3px 12px rgba(255, 215, 0, 0.5)) brightness(1.08); }
    66% { filter: drop-shadow(0 3px 10px rgba(218, 165, 32, 0.45)) brightness(1.04); }
}

@keyframes logoSweep {
    0% { transform: translateX(-50px) skewX(-15deg); }
    100% { transform: translateX(120px) skewX(-15deg); }
}

@keyframes particleOrbit1 {
    0%, 100% { transform: translate(0, 0); opacity: 0.8; }
    25% { transform: translate(3px, -4px); opacity: 0.4; }
    50% { transform: translate(-2px, -6px); opacity: 0.9; }
    75% { transform: translate(-4px, -2px); opacity: 0.3; }
}

@keyframes particleOrbit2 {
    0%, 100% { transform: translate(0, 0); opacity: 0.6; }
    33% { transform: translate(-3px, -5px); opacity: 0.3; }
    66% { transform: translate(4px, -3px); opacity: 0.8; }
}

@keyframes particleOrbit3 {
    0%, 100% { transform: translate(0, 0); opacity: 0.5; }
    50% { transform: translate(2px, -4px); opacity: 0.2; }
}

@keyframes particleOrbit4 {
    0%, 100% { transform: translate(0, 0); opacity: 0.4; }
    40% { transform: translate(-2px, 3px); opacity: 0.7; }
    80% { transform: translate(3px, -2px); opacity: 0.2; }
}

@keyframes particleOrbit5 {
    0%, 100% { transform: translate(0, 0); opacity: 0.7; }
    30% { transform: translate(4px, 2px); opacity: 0.3; }
    60% { transform: translate(-3px, 5px); opacity: 0.9; }
}

@keyframes sparkleFlash {
    0%, 80%, 100% { opacity: 0; transform: scale(0.6); }
    90% { opacity: 1; transform: scale(1.2); }
}

/* ==========================================================================
   17. MEDIA QUERIES — una sola estructura responsive
   ========================================================================== */

/* ---------- Tablet (<= 1024px) ---------- */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .metals-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .mini-services { grid-template-columns: repeat(2, 1fr); }

    /* Trust: de 5 a 2 columnas en tablet */
    .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 24px; }
}

/* ---------- Tablet pequeño / Móvil grande (<= 1020px): menú hamburguesa ---------- */
/* PACK 1: breakpoint subido 860->1020 porque el menú de 7 ítems no cabe en franja 861-1020px */
@media (max-width: 1020px) {
    .top-bar { display: none; }

    /* Sin barra superior, la navbar va al borde superior */
    .top-bar ~ header .navbar { top: 0; }

    .nav-toggle { display: block; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: min(300px, 85vw);
        height: 100vh;
        height: 100dvh;
        background: var(--primary-dark);
        flex-direction: column;
        padding: calc(var(--navbar-h) + var(--safe-top) + 24px) calc(24px + var(--safe-right)) calc(32px + var(--safe-bottom)) 24px;
        z-index: 1000;
        /* ACC-F9-02: visibility evita que los enlaces fuera de pantalla reciban
           foco por teclado cuando el panel esta cerrado (WCAG 2.4.3 / 2.4.7) */
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s;
        gap: 0;
        align-items: stretch;
        overflow-y: auto;
        overscroll-behavior: contain;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.4);
    }

    .nav-menu.open {
        transform: translateX(0);
        visibility: visible;
    }

    .nav-menu a {
        padding: 14px 0;
        font-size: 1rem;
        width: 100%;
        color: rgba(255, 255, 255, 0.8);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 0;
    }

    .nav-menu a:hover,
    .nav-menu a.active { color: var(--accent-light); }

    /* CTA dentro del panel lateral en móvil */
    .nav-cta-wrap {
        margin-left: 0;
        padding-left: 0;
        margin-top: 16px;
    }

    .nav-menu .nav-cta {
        justify-content: center;
        width: 100%;
        padding: 14px 22px;
        font-size: 1rem;
        box-shadow: none;
        border-bottom: none;
        border-radius: var(--radius-sm);
    }

    .hero {
        min-height: auto;
        padding: 110px 0 60px;
        text-align: left;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* En tablet el lingote queda arriba, más grande */
    .hero-visual {
        order: -1;
        min-height: 360px;
    }

    .hero-ingot { max-width: 460px; }

    /* Reposicionar tarjetas flotantes dentro del viewport (sin overflow) */
    .hero-stat-1 { top: 2%; left: 0; }
    .hero-stat-2 { top: 42%; right: 0; }
    .hero-stat-3 { bottom: 4%; left: 4%; }

    .process-video { margin-top: 40px; }
    .process-video-title { font-size: 1.05rem; }
    .play-btn { width: 56px; height: 56px; font-size: 1.1rem; }

    .section-header { margin-bottom: 40px; }
}

/* ---------- Móvil (<= 680px) ---------- */
@media (max-width: 680px) {
    .services-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }

    /* Sección app: una sola columna en móvil, QR primero */
    .app-section { grid-template-columns: 1fr; gap: 32px; }
    .app-visual { order: -1; }
    .app-download-btn { width: 100%; justify-content: center; }

    .hero-buttons { flex-direction: column; align-items: stretch; }
    .hero-buttons .btn { width: 100%; }

    .footer-grid { grid-template-columns: 1fr; }

    /* Trust: una sola columna en móvil para mejor legibilidad */
    .trust-grid { grid-template-columns: 1fr; gap: 16px; }

    /* Lingote y tarjetas flotantes más compactos en móvil */
    .hero-visual { min-height: 320px; }
    .hero-ingot { max-width: 380px; }

    .hero-stat { padding: 10px 14px; gap: 10px; }
    .hero-stat i { width: 34px; height: 34px; font-size: 0.9rem; }
    .hero-stat strong { font-size: 0.95rem; }
    .hero-stat span { font-size: 0.75rem; } /* ACC-007: minimo 12px */
}

/* ---------- Móvil pequeño (<= 480px) ---------- */
@media (max-width: 480px) {
    .hero h1 { font-size: 1.7rem; }

    /* Lingote más pequeño para móvil estrecho */
    .hero-visual { min-height: 280px; }
    .hero-ingot { max-width: 300px; }

    /* Tarjetas flotantes aún más compactas */
    .hero-stat { padding: 8px 12px; gap: 8px; border-radius: var(--radius-sm); }
    .hero-stat i { width: 30px; height: 30px; font-size: 0.8rem; }
    .hero-stat strong { font-size: 0.85rem; }
    .hero-stat span { font-size: 0.75rem; } /* ACC-007: antes 0.62rem (~9.9px), minimo 12px */

    .metals-grid { grid-template-columns: 1fr; }
    .mini-services { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: 1fr; }

    .timeline { padding-left: 32px; }
    .timeline-marker { left: -32px; }
    .timeline-progress { left: 11px; }

    .faq-item summary { padding: 16px 18px; }
    .faq-answer { padding: 14px 18px; }

    .btn { padding: 12px 24px; font-size: 0.85rem; }

    .back-top { bottom: 16px; right: 16px; }
}

/* ==========================================================================
   18. PRINT
   ========================================================================== */
@media print {
    nav, .back-top, #scrollProgress, .top-bar, .nav-toggle, .nav-overlay { display: none !important; }
    .trust-section { display: none !important; }
    .section { padding: 20px 0 !important; }
    body { background: white !important; color: black !important; }
    .hero {
        min-height: auto;
        padding: 40px 0;
        background: white !important;
        color: black !important;
    }
    .hero h1 { color: black !important; }
}

/* ==========================================================================
   19. BOTON FLOTANTE DE WHATSAPP
   ========================================================================== */
.whatsapp-float {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    left: calc(20px + var(--safe-left));
    z-index: 898;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #1DA851 0%, #128C7E 100%); /* ACC-005: verde WA accesible, icono blanco >= 3.1:1 en todo el degradado */
    color: #fff;
    font-size: 1.7rem;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: whatsappIn 0.5s ease 1s backwards;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
    transform: scale(1.08);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.6);
    color: #fff;
}

/* Anillo pulsante para llamar la atencion */
.whatsapp-float::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius-full);
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.45);
    animation: whatsappPulse 2.4s ease-out infinite;
    pointer-events: none;
}

/* Tooltip (solo dispositivos con puntero fino) */
.whatsapp-tooltip {
    position: absolute;
    left: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%) translateX(-6px);
    background: var(--primary);
    color: #fff;
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 500;
    white-space: nowrap;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
    box-shadow: var(--shadow-lg);
}

.whatsapp-tooltip::before {
    content: "";
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-right-color: var(--primary);
}

.whatsapp-float:hover .whatsapp-tooltip,
.whatsapp-float:focus-visible .whatsapp-tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

@keyframes whatsappIn {
    from { opacity: 0; transform: translateY(24px) scale(0.6); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes whatsappPulse {
    0%   { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.45); }
    70%  { box-shadow: 0 0 0 18px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@media (hover: none) {
    .whatsapp-tooltip { display: none; }
}

@media (max-width: 680px) {
    .whatsapp-float {
        width: 52px;
        height: 52px;
        font-size: 1.5rem;
        bottom: calc(16px + var(--safe-bottom));
        left: calc(16px + var(--safe-left));
    }
}

@media (prefers-reduced-motion: reduce) {
    .whatsapp-float,
    .whatsapp-float::before { animation: none; }

    /* ACC-011: respuesta global a prefers-reduced-motion (WCAG 2.2, animacion no esencial) */
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html { scroll-behavior: auto; }
}

@media print {
    .whatsapp-float { display: none !important; }
}

/* ==========================================================================
   20. PULIDO PREMIUM (degradados de oro y micro-detalles)
   ========================================================================== */

/* Boton principal: plano accesible (el degradado claro fallaba contraste con blanco) */
.btn-primary {
    background: var(--accent-contrast); /* ACC-001: 5.0:1 con texto blanco */
}

.btn-primary:hover {
    box-shadow: 0 8px 28px rgba(184, 148, 31, 0.45);
}

/* Texto dorado con degradado de oro real (con fallback seguro) */
/* ACC-004: fallback accesible para .text-gold usado en secciones claras (sin background-clip) */
.section .text-gold { color: var(--accent-contrast); }

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
    .text-gold {
        background: linear-gradient(120deg, #C9A84C 0%, #FFD700 35%, #B8941F 70%, #9A7B14 100%); /* ACC-004: ultimo tramo >= 3.5:1 sobre navy (antes #8C6D10 2.9:1) */
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .metal-symbol {
        background: linear-gradient(160deg, #E8C766 0%, #FFD700 40%, #B8941F 75%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    /* ACC-004: variantes con degradado accesible (>= 3:1) para dorados sobre fondos claros (.section) */
    .section .text-gold {
        background: linear-gradient(120deg, #B8860B 0%, #9A7B14 50%, #8A6B0F 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .section .metal-symbol {
        background: linear-gradient(160deg, #B8860B 0%, #9A7B14 50%, #8A6B0F 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
}

/* Numeros del proceso con degradado dorado accesible */
.timeline-number {
    background: linear-gradient(135deg, var(--accent-contrast), #6E560C); /* ACC-001: blanco >= 5:1 en todo el degradado */
    color: #fff;
}

/* Halo dorado al pasar sobre las tarjetas */
.metal-card:hover,
.service-card:hover,
.cert-card:hover {
    box-shadow: 0 14px 36px rgba(184, 148, 31, 0.16);
    border-color: rgba(184, 148, 31, 0.35);
}

/* Comilla decorativa en testimonios */
.testimonial-card { position: relative; }

.testimonial-card::before {
    content: "\201C";
    position: absolute;
    top: 6px;
    right: 18px;
    font-family: Georgia, serif;
    font-size: 4.5rem;
    line-height: 1;
    color: rgba(184, 148, 31, 0.18);
    pointer-events: none;
}


/* ==========================================================================
   21. CORRECCIONES: REPRODUCTOR DE VIDEO Y ANCLAJES
   ========================================================================== */

/* El contenedor mantiene 16:9 cuando el JS sustituye la miniatura por el iframe */
.video-player { aspect-ratio: 16 / 9; }

.video-player iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

/* Salto nativo correcto a secciones (skip-link, sin JS o recarga con hash) */
section[id] {
    scroll-margin-top: calc(var(--navbar-h) + 16px);
}


/* Enlace de respaldo del video (visible bajo el reproductor) */
.video-alt-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.25s ease;
}

.video-alt-link:hover { color: var(--accent-contrast); } /* ACC-004 */

.video-alt-link i { color: #e52d27; font-size: 1rem; }


/* Estados del reproductor de video (carga y respaldo) */
.video-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 26, 46, 0.55);
    color: #fff;
    font-size: 2rem;
    z-index: 2;
}

.video-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background: var(--primary-dark);
    color: #fff;
    text-align: center;
    padding: 24px;
}

.video-fallback i {
    font-size: 2.6rem;
    color: #e52d27;
}

.video-fallback p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
    opacity: 0.85;
    max-width: 420px;
}

.video-fallback a {
    display: inline-block;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 0 4px 18px rgba(184, 148, 31, 0.35);
}

.video-fallback a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(184, 148, 31, 0.5);
}

/* ============================================================
   FASE 4: Asistente Comprar / Vender (#comprar-vender)
   ============================================================ */
.wizard {
    max-width: 780px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: clamp(20px, 4vw, 36px);
}

.wizard-progress-label {
    margin: 0 0 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.wizard-bar {
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--bg-alt);
    overflow: hidden;
    margin-bottom: 26px;
}

.wizard-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--accent-light), var(--accent-dark));
    transition: width 0.35s ease;
}

/* [hidden] debe imponerse a cualquier display de autor dentro del asistente
   (nav y botones usan display:flex, que sin !important pisaria la regla UA).
   Alcance limitado a .wizard para no afectar a otras secciones. */
.wizard [hidden] {
    display: none !important;
}

.wizard-title {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.4vw, 1.5rem);
    font-weight: 700;
    color: var(--text);
    margin: 0 0 6px;
}

.wizard-title:focus {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
    border-radius: 4px;
}

.wizard-subtitle {
    margin: 0 0 18px;
    color: var(--text-dim);
    font-size: 0.98rem;
}

/* Opciones tipo tarjeta (radios reales, ocultos visualmente) */
.wizard-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 600px) {
    .wizard-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

.wizard-option {
    position: relative;
}

.wizard-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    margin: 0;
}

.wizard-option label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 44px;
    padding: 14px 48px 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    background: var(--bg-card);
    transition: border-color var(--transition), background var(--transition);
}

.wizard-option label:hover {
    border-color: var(--accent-light);
}

.wizard-option input:focus-visible + label {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.wizard-option input:checked + label {
    border-color: var(--accent);
    background: rgba(184, 148, 31, 0.08);
}

.wizard-option input:checked + label::after {
    content: "\2713";
    position: absolute;
    top: 12px;
    right: 12px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--accent);
    color: #FFFFFF;
    font-size: 0.85rem;
    font-weight: 700;
}

.wizard-option-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--text);
    font-size: 1.02rem;
}

.wizard-option-title i {
    color: var(--accent-contrast);
}

.wz-metal-symbol {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent-contrast);
    border: 1.5px solid var(--accent-light);
    border-radius: var(--radius-sm);
    padding: 2px 7px;
    min-width: 20px;
    text-align: center;
}

.wizard-option-desc {
    font-size: 0.9rem;
    color: var(--text-dim);
}

/* Paso peso */
.wizard-weight-input {
    margin-top: 16px;
}

.wizard-weight-input > label {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 6px;
    color: var(--text);
}

.wizard-weight-row {
    display: flex;
    max-width: 320px;
}

.wizard-weight-row input {
    flex: 1;
    min-width: 0;
    padding: 12px 14px;
    border: 2px solid var(--border);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: 1.05rem;
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg-card);
}

.wizard-weight-row input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.wizard-weight-unit {
    display: flex;
    align-items: center;
    padding: 0 16px;
    border: 2px solid var(--border);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    background: var(--bg-alt);
    font-weight: 700;
    color: var(--text-dim);
}

/* Avisos informativos */
.wizard-info {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    background: rgba(184, 148, 31, 0.07);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-bottom: 18px;
}

.wizard-info i {
    color: var(--accent-contrast);
    margin-top: 3px;
}

.wizard-info p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text);
}

/* Contacto (reutiliza .form-group / .field-error / .form-check) */
.wizard-fields {
    display: grid;
    gap: 14px;
}

.wizard-fields label {
    font-weight: 600;
    font-size: 0.95rem;
}

.wizard-fields input[type="text"],
.wizard-fields input[type="tel"],
.wizard-fields input[type="email"] {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg-card);
}

.wizard-fields input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.wz-privacy label {
    font-weight: 400;
    font-size: 0.9rem;
}

.wizard-hp {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* Resumen */
.wizard-summary {
    margin: 0 0 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card);
}

.wizard-summary-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.wizard-summary-row:last-child {
    border-bottom: none;
}

.wizard-summary dt {
    font-weight: 600;
    color: var(--text-dim);
    margin: 0;
}

.wizard-summary dd {
    margin: 0;
    font-weight: 700;
    color: var(--text);
    text-align: right;
    overflow-wrap: anywhere;
}

.wizard-note {
    font-size: 0.88rem;
    color: var(--text-dim);
    margin: 10px 0 0;
}

/* Error general del asistente */
.wizard-hint {
    margin: 14px 0 0;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: rgba(211, 47, 47, 0.08);
    border-left: 4px solid var(--error);
    color: var(--error);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Navegacion del asistente */
.wizard-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 22px;
    flex-wrap: wrap;
}

.wizard-btn-back {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text);
}

.wizard-btn-back:hover {
    border-color: var(--accent);
    color: var(--accent-contrast);
}

.wizard-btn-next {
    min-width: 160px;
}

/* Confirmacion */
.wizard-done {
    text-align: center;
    padding: 28px 8px 8px;
}

.wizard-done-icon {
    font-size: 3rem;
    color: var(--success);
    margin-bottom: 10px;
}

.wizard-done p {
    color: var(--text);
    max-width: 480px;
    margin: 0 auto 8px;
}

.wizard-done .wizard-note {
    text-align: center;
}

@media (max-width: 480px) {
    .wizard-nav {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .wizard-btn-back,
    .wizard-btn-next {
        width: 100%;
    }

    .wizard-weight-row {
        max-width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .wizard-bar-fill,
    .wizard-option label {
        transition: none;
    }
}

/* ============================================================
   FASE 5: Tienda - catalogo por familias de metal
   Datos en js/catalog.js; logica en js/shop.js. La regla
   .shop [hidden] garantiza que el atributo hidden venza a
   cualquier display de autor (leccion de la FASE 4).
   ============================================================ */
.shop [hidden] {
    display: none !important;
}

.shop-note {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    max-width: 720px;
    margin: 14px auto 0;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--text-dim);
}

.shop-note i {
    color: var(--accent-contrast);
    margin-top: 4px;
    flex-shrink: 0;
}

.shop-cats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 26px;
}

@media (min-width: 600px) {
    .shop-cats { grid-template-columns: repeat(4, 1fr); }
}

.shop-cat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 14px 16px;
    min-height: 96px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-family: var(--font-body);
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.shop-cat:hover {
    border-color: var(--accent-light);
}

.shop-cat:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.shop-cat[aria-pressed="true"] {
    border-color: var(--accent);
    background: rgba(184, 148, 31, 0.08);
}

.shop-symbol {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent-contrast);
    border: 1.5px solid var(--accent-light);
    border-radius: var(--radius-sm);
    padding: 2px 7px;
    min-width: 20px;
    text-align: center;
}

.shop-cat-name {
    font-weight: 700;
    font-size: 1.02rem;
}

.shop-cat-count {
    font-size: 0.82rem;
    color: var(--text-dim);
}

/* Region de estado para lectores de pantalla (visualmente oculta) */
.shop-status {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.shop-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 22px;
}

@media (min-width: 600px) {
    .shop-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1100px) {
    .shop-grid { grid-template-columns: repeat(3, 1fr); }
}

.shop-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px;
    box-shadow: var(--shadow);
}

.shop-card-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: var(--bg-alt);
}

.shop-card-name {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.05rem;
}

.shop-card-desc {
    margin: 0;
    color: var(--text-dim);
    font-size: 0.92rem;
    line-height: 1.5;
}

.shop-card-price {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.shop-price-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--accent-contrast);
}

.shop-price-label {
    font-size: 0.78rem;
    color: var(--text-dim);
}

.shop-card-avail {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.shop-card-btn {
    margin-top: auto;
    width: 100%;
    min-height: 44px;
    justify-content: center;
}

.shop-empty {
    margin-top: 22px;
    padding: clamp(24px, 5vw, 40px);
    background: var(--bg-card);
    border: 1.5px dashed var(--border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.shop-empty-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.1rem;
}

.shop-empty-title:focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.shop-empty-text {
    margin: 0;
    max-width: 520px;
    color: var(--text-dim);
    line-height: 1.55;
}

.shop-empty-cta {
    min-height: 48px;
}

.shop-detail {
    margin-top: 22px;
}

.shop-detail-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: clamp(20px, 4vw, 32px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow);
}

.shop-detail-back {
    align-self: flex-start;
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    min-height: 44px;
    font-family: var(--font-body);
    font-size: 0.92rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.shop-detail-back:hover {
    border-color: var(--accent-light);
}

.shop-detail-back:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.shop-detail-head {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.shop-detail-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.2vw, 1.45rem);
}

.shop-detail-title:focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.shop-detail-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: var(--bg-alt);
}

.shop-detail-list {
    margin: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-card);
}

.shop-detail-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.shop-detail-row:last-child {
    border-bottom: none;
}

.shop-detail-row dt {
    color: var(--text-dim);
    font-size: 0.92rem;
}

.shop-detail-row dd {
    margin: 0;
    font-weight: 600;
    text-align: right;
    overflow-wrap: anywhere;
}

.shop-detail-note {
    margin: 0;
    padding: 12px 14px;
    border-left: 3px solid var(--accent);
    background: rgba(184, 148, 31, 0.08);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.92rem;
    line-height: 1.5;
}

.shop-detail-cta {
    min-height: 48px;
    justify-content: center;
}

@media (max-width: 480px) {
    .shop-empty-cta,
    .shop-detail-cta {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .shop-cat,
    .shop-detail-back {
        transition: none;
    }
}

/* ==========================================================================
   21. VISUAL REDESIGN P01-P02-P06-P07
   Bloque unico y autocontenido de la implementacion visual controlada.
   - P01: hero con fotografia real (img/lingotes.jpg, recurso propio) recortada
     por CSS para mostrar solo la zona superior ("999.9 FINE GOLD") y excluir
     cualquier marca de terceros de la parte inferior de la foto original.
   - P02: franja compacta de confianza con datos demostrables (sin parrafos).
   - P06: banda de textura metalica discreta por metal en #metales.
   - P07: cotizaciones unificadas en un unico panel con divisores finos.
   Las reglas antiguas de .hero-ingot/.hero-stat/.hero-trust/.trust-section/
   .testimonials-*/.app-* quedan sin HTML asociado (CSS muerto documentado).
   ========================================================================== */

/* ----- P01: fotografia del hero ----- */
.hero-photo {
    position: relative;
    width: 100%;
    max-width: 520px;
    aspect-ratio: 1 / 1;
    margin: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
}

.hero-photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* Recorte: encuadre superior centrado + zoom para excluir la zona
       inferior de la foto original (donde aparece marca de terceros). */
    object-position: 50% 0%;
    transform: scale(1.25);
    transform-origin: 50% 0%;
}

/* Velo navy para cohesion cromatica con el fondo del hero */
.hero-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(27, 42, 74, 0.12) 0%,
        rgba(27, 42, 74, 0) 38%,
        rgba(27, 42, 74, 0.42) 100%);
    pointer-events: none;
}

/* ----- P02: franja compacta de confianza ----- */
.trust-strip {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 5;
}

.trust-strip .container {
    padding-top: clamp(18px, 2.5vw, 28px);
    padding-bottom: clamp(18px, 2.5vw, 28px);
}

.trust-strip-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(16px, 2.5vw, 32px);
}

.trust-strip-item {
    display: flex;
    align-items: center;
    gap: 13px;
    min-width: 0;
}

.trust-strip-item > i {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(184, 148, 31, 0.14), rgba(184, 148, 31, 0.05));
    border: 1px solid rgba(184, 148, 31, 0.22);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
}

.trust-strip-text { min-width: 0; }

.trust-strip-text strong {
    display: block;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.25;
}

.trust-strip-text small {
    display: block;
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.3;
    margin-top: 2px;
}

/* ----- P06: banda de textura metalica por metal ----- */
/* Textura neutra generada por CSS (gradiente abstracto): no representa
   un producto concreto ni acredita pureza, peso ni procedencia. */
.metal-card--au,
.metal-card--ag,
.metal-card--pt,
.metal-card--pd {
    padding-top: 142px; /* banda (104px) + aire inferior */
}

.metal-card--au::before,
.metal-card--ag::before,
.metal-card--pt::before,
.metal-card--pd::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 104px;
    box-shadow: inset 0 -1px 0 rgba(27, 42, 74, 0.14);
    pointer-events: none;
}

.metal-card--au::before {
    background: linear-gradient(135deg, #F6E27A 0%, #E8C766 32%, #C9A84C 64%, #9A7B14 100%);
}

.metal-card--ag::before {
    background: linear-gradient(135deg, #F2F4F7 0%, #D7DCE3 34%, #B9C0C9 66%, #8E97A3 100%);
}

.metal-card--pt::before {
    background: linear-gradient(135deg, #EFEFEA 0%, #E0E0D8 36%, #C6C6BD 68%, #A8A89E 100%);
}

.metal-card--pd::before {
    background: linear-gradient(135deg, #CDD3DA 0%, #ABB3BC 38%, #8B939E 70%, #6E7783 100%);
}

/* Simbolo quimico centrado sobre su banda (texto real, contraste >= 3:1
   en la zona superior clara de cada gradiente) */
.metal-card--au .metal-symbol,
.metal-card--ag .metal-symbol,
.metal-card--pt .metal-symbol,
.metal-card--pd .metal-symbol {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0;
    font-size: 2.7rem;
    color: var(--primary);
    background: none;
    -webkit-text-fill-color: var(--primary);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.25);
}

/* ----- P07: cotizaciones en un unico panel ----- */
/* Mantiene intactos todos los hooks de js/quotes.js (#quotesGrid,
   .quote-card[data-metal], .quote-price/.quote-unit/.quote-state-*,
   .quote-extra y #quotesNote). Solo cambia la presentacion visual. */
.quotes-grid {
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

@media (min-width: 600px) {
    .quotes-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1100px) {
    .quotes-grid { grid-template-columns: repeat(4, 1fr); }
}

.quote-card {
    background: var(--bg-card);
    border: none;
    border-radius: 0;
    padding: 26px 22px;
}

.quote-card:hover {
    background: rgba(184, 148, 31, 0.04);
    box-shadow: none;
}

/* ----- Responsive del bloque P01-P07 ----- */
@media (max-width: 1020px) {
    /* Una sola columna: la foto va arriba, centrada y contenida */
    .hero-photo { max-width: min(420px, 92%); }
    .hero-visual { min-height: 0; }

    .trust-strip-list { grid-template-columns: repeat(2, 1fr); gap: 18px 24px; }
}

@media (max-width: 680px) {
    .hero-photo { max-width: min(360px, 92%); }

    .trust-strip-list { grid-template-columns: 1fr; gap: 14px; }

    .trust-strip-item > i { width: 38px; height: 38px; font-size: 0.95rem; }
    .trust-strip-text strong { font-size: 0.92rem; }
    .trust-strip-text small { font-size: 0.75rem; } /* ACC-007: minimo 12px */
}

@media (max-width: 480px) {
    .hero-photo { max-width: min(320px, 94%); }
}

/* ----- Print del bloque P01-P07 ----- */
@media print {
    .trust-strip { display: none !important; }
    .hero-photo { box-shadow: none; }
    .metal-card--au::before,
    .metal-card--ag::before,
    .metal-card--pt::before,
    .metal-card--pd::before {
        background: none !important;
        box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.2);
    }
    .quotes-grid { border-color: #000; background: #000; }
    .quote-card { background: #fff; }
}



/* ============================================================
   P07 (mejora 2026-08-26): estado "en preparación" de cotizaciones
   Solo CSS: convierte el estado UNAVAILABLE en esqueleto animado
   que comunica "en preparación" en lugar de "roto". Sin tocar quotes.js
   (los data-state los sigue gestionando el JS existente).
   ============================================================ */
.quote-card[data-state="UNAVAILABLE"] {
    border-style: dashed;
    border-color: rgba(184, 148, 31, 0.35);
    background:
        repeating-linear-gradient(135deg,
            rgba(184, 148, 31, 0.04) 0 12px,
            transparent 12px 24px),
        var(--bg-card);
}
.quote-card[data-state="UNAVAILABLE"] .quote-price {
    display: inline-block;
    width: 84px;
    height: 1.35em;
    border-radius: 6px;
    background: linear-gradient(100deg,
        rgba(120, 120, 128, 0.14) 30%,
        rgba(184, 148, 31, 0.22) 50%,
        rgba(120, 120, 128, 0.14) 70%);
    background-size: 200% 100%;
    animation: quoteSkeleton 1.6s ease-in-out infinite;
    vertical-align: middle;
}
.quote-card[data-state="UNAVAILABLE"] .quote-state-icon { display: none; }
.quote-card[data-state="UNAVAILABLE"] .quote-state-label { color: #6b6b70; font-weight: 500; }
@keyframes quoteSkeleton {
    from { background-position: 160% 0; }
    to { background-position: -60% 0; }
}
@media (prefers-reduced-motion: reduce) {
    .quote-card[data-state="UNAVAILABLE"] .quote-price { animation: none; }
}


/* ============================================================
   FASE H1 (2026-08-27): HERRAMIENTAS PARA METALES
   Solo 2 herramientas implementadas: conversor de unidades (02)
   y calculadora de pureza (04). Página herramientas.html + único
   enlace "nav-new" en la navegación de index.html. Exclusivamente
   matemática física: sin precios ni cotización. Reutiliza tokens
   y patrones existentes (form-group, field-error, btn, section-header).
   ============================================================ */

/* Enlace "Herramientas" en la navegación (navbar clara de escritorio) */
.nav-menu a.nav-new {
    color: var(--accent-contrast); /* ACC-004: dorado profundo 4.9:1 sobre claro */
    font-weight: 600;
}
.nav-menu a.nav-new::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 8px;
    flex: none;
}

/* Página herramientas.html (patrón de página secundaria) */
.tools-page {
    padding: calc(var(--navbar-h) + 60px) 0 80px;
    min-height: 70vh;
}
.section-header h1 {
    font-size: clamp(1.6rem, 3.5vw, 2.3rem);
    margin-bottom: 12px;
}
.tools-page .text-gold { color: var(--accent-contrast); } /* ACC-004: como .section .text-gold */

.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 920px;
    margin: 0 auto;
}
.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    box-shadow: 0 6px 24px rgba(27, 42, 74, 0.06);
}
.tool-card h2 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--primary);
}
.tool-desc {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 18px;
}
.tool-form .tool-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}
.tool-result {
    margin-top: 20px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}
.tool-result-label {
    display: block;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 6px;
}
.tool-result-value {
    color: var(--accent-light);
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    overflow-wrap: anywhere;
}
.tool-result-empty {
    color: rgba(255, 255, 255, 0.55);
    font-weight: 400;
}
.tool-formula {
    font-size: 0.78rem;
    color: var(--text-dim);
    text-align: center;
    margin-top: 10px;
}
.tools-note {
    max-width: 720px;
    margin: 40px auto 0;
    font-size: 0.85rem;
    color: var(--text-dim);
}
.tools-note i { color: var(--accent-contrast); }
.tools-back {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}
a.tools-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-contrast); /* ACC-004 */
    font-weight: 600;
    font-size: 0.9rem;
    min-height: 44px; /* ACC-010: objetivo táctil */
}
a.tools-back:hover { gap: 12px; }

@media (min-width: 560px) {
    .tool-form .tool-row { grid-template-columns: 1fr 1fr; gap: 6px 16px; }
}
@media (min-width: 900px) {
    .tools-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

/* Panel móvil (fondo navy oscuro): misma regla ACC-004 que .active/hover */
@media (max-width: 1020px) {
    .nav-menu a.nav-new { color: var(--accent-light); }
    .nav-menu a.nav-new::before { background: var(--accent-light); }
}


/* ============================================================
   FASE H2 (2026-08-24): COTIZACIÓN DE METALES (PREPARADA)
   Tercera tarjeta de herramientas.html. Estado honesto sin
   conexión de mercado: sin precios, sin proveedor, sin red.
   Reutiliza íntegramente los estilos H1 (tool-card, tool-form,
   tool-row, form-group, tool-result). Solo añade el indicador
   de fuente de mercado no conectada.
   ============================================================ */

.quote-source {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 0.78rem;
    color: var(--text-dim);
}
.quote-source-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim); /* gris neutro: no hay señal de estado real */
    flex: none;
}