/* ==========================================================================
   CORPORACIÓN MUSEO DE LA ESMERALDA COLOMBIANA (MEC)
   Estilos Oficiales - Diseño Moderno & Manual de Marca
   Colores Institucionales: Pantone 339 C (Esmeralda), Pantone 433 C (Pizarra), Pantone 877 C (Plata)
   ========================================================================== */

:root {
  /* Paleta Institucional (Manual de Marca MEC) */
  --mec-emerald: #00a87e;            /* Pantone 339 C (C:84 M:0 Y:56 K:0) */
  --mec-emerald-light: #00d59e;      /* Acento claro */
  --mec-emerald-glow: rgba(0, 168, 126, 0.35);
  --mec-emerald-subtle: rgba(0, 168, 126, 0.12);

  --mec-slate: #1d252c;              /* Pantone 433 C (C:34 M:0 Y:0 K:95) */
  --mec-slate-deep: #13191f;         /* Fondo mineral profundo */
  --mec-slate-surface: #242e37;      /* Tarjetas y superficies */
  --mec-slate-card: rgba(36, 46, 55, 0.85);
  --mec-slate-border: rgba(138, 149, 158, 0.22);

  --mec-silver: #8a959e;             /* Pantone 877 C (C:5 M:0 Y:0 K:40) */
  --mec-silver-light: #c8d1d8;
  --mec-white: #ffffff;
  --mec-text-primary: #f1f5f9;
  --mec-text-secondary: #94a3b8;
  --mec-text-muted: #64748b;

  /* Geometría y Sombras */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-emerald: 0 12px 36px rgba(0, 168, 126, 0.25);

  /* Tipografía */
  --font-serif: 'Cinzel', 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-condensed: 'Space Grotesk', 'Helvetica Neue Condensed', sans-serif;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--mec-slate-deep);
  color: var(--mec-text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 168, 126, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(0, 168, 126, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #13191f 0%, #161e25 50%, #11161c 100%);
  background-attachment: fixed;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* Contenedores */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-wide {
  max-width: 1440px;
}

/* ==========================================================================
   BARRA SUPERIOR INSTITUCIONAL (TOP BAR)
   ========================================================================== */
.top-bar {
  background-color: rgba(19, 25, 31, 0.95);
  border-bottom: 1px solid rgba(138, 149, 158, 0.15);
  font-size: 0.8125rem;
  color: var(--mec-silver);
  padding: 0.45rem 0;
  position: relative;
  z-index: 101;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-item svg {
  width: 14px;
  height: 14px;
  color: var(--mec-emerald);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-selector {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(138, 149, 158, 0.2);
  border-radius: 20px;
  padding: 2px 4px;
}

.lang-btn {
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--mec-silver);
  border-radius: 12px;
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background-color: var(--mec-emerald);
  color: var(--mec-white);
}

/* ==========================================================================
   NAVBAR PRINCIPAL
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(29, 37, 44, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 168, 126, 0.2);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(19, 25, 31, 0.96);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-link:hover .brand-logo-img {
  transform: scale(1.02);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--mec-text-primary);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--mec-emerald);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--mec-emerald-light);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--mec-emerald);
  color: var(--mec-white);
  box-shadow: 0 4px 18px var(--mec-emerald-glow);
}

.btn-primary:hover {
  background-color: var(--mec-emerald-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 168, 126, 0.45);
}

.btn-outline {
  border: 1px solid rgba(138, 149, 158, 0.35);
  color: var(--mec-text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.btn-outline:hover {
  border-color: var(--mec-emerald);
  background: rgba(0, 168, 126, 0.1);
  color: var(--mec-emerald-light);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: #25d366;
  color: #ffffff;
}

.btn-whatsapp:hover {
  background-color: #20bd5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--mec-text-primary);
  transition: all var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}

/* Patrón geométrico inspirado en las facetas del logo oficial */
.hero-facet-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.18;
  z-index: 1;
  background-image: 
    linear-gradient(135deg, rgba(0, 168, 126, 0.15) 1px, transparent 1px),
    linear-gradient(225deg, rgba(138, 149, 158, 0.1) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero-glow-sphere {
  position: absolute;
  top: 20%;
  right: 15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 168, 126, 0.22) 0%, rgba(0, 168, 126, 0) 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 168, 126, 0.12);
  border: 1px solid rgba(0, 168, 126, 0.35);
  border-radius: 9999px;
  padding: 0.4rem 1.1rem;
  margin-bottom: 1.5rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--mec-emerald);
  box-shadow: 0 0 10px var(--mec-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-badge-text {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mec-emerald-light);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: var(--mec-white);
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #00d59e 0%, #00a87e 50%, #7ee6c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.2vw, 1.18rem);
  color: var(--mec-silver-light);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(138, 149, 158, 0.18);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-condensed);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--mec-emerald-light);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--mec-silver);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Tarjeta interactiva del Hero */
.hero-card-showcase {
  position: relative;
  display: flex;
  justify-content: center;
}

.gem-showcase-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: linear-gradient(145deg, rgba(36, 46, 55, 0.85) 0%, rgba(20, 26, 32, 0.92) 100%);
  border: 1px solid rgba(0, 168, 126, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-lg), var(--shadow-emerald);
  backdrop-filter: blur(16px);
  transition: transform var(--transition-normal);
}

.gem-showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 168, 126, 0.5);
}

.showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.showcase-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mec-emerald-light);
  background: rgba(0, 168, 126, 0.12);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(0, 168, 126, 0.3);
}

.showcase-id {
  font-size: 0.8125rem;
  color: var(--mec-silver);
  font-family: monospace;
}

.showcase-img-wrap {
  position: relative;
  width: 100%;
  height: 320px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: radial-gradient(circle, rgba(29, 37, 44, 0.9) 0%, rgba(13, 17, 22, 0.98) 100%);
  border: 1px solid rgba(138, 149, 158, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.showcase-img-wrap img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  transition: transform 0.5s ease;
  filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.7));
}

.gem-showcase-card:hover .showcase-img-wrap img {
  transform: scale(1.06);
}

.showcase-info h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--mec-white);
  margin-bottom: 0.35rem;
}

.showcase-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--mec-silver);
  margin-bottom: 0.75rem;
}

.showcase-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.showcase-desc {
  font-size: 0.875rem;
  color: var(--mec-text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.showcase-actions {
  display: flex;
  gap: 0.75rem;
}

.showcase-nav-dots {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}

.dot-btn {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(138, 149, 158, 0.3);
  transition: all var(--transition-fast);
}

.dot-btn.active {
  background: var(--mec-emerald);
  width: 24px;
  border-radius: 6px;
}

/* ==========================================================================
   SECCIONES GENERALES & ENCABEZADOS
   ========================================================================== */
.section-padding {
  padding: 6.5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mec-emerald-light);
  margin-bottom: 0.75rem;
}

.section-label::before,
.section-label::after {
  content: '—';
  color: var(--mec-emerald);
  opacity: 0.6;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.2vw, 2.85rem);
  color: var(--mec-white);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--mec-silver-light);
  line-height: 1.7;
}

/* ==========================================================================
   SECCIÓN: OBRAS MAESTRAS (MASTERPIECES GALLERY)
   ========================================================================== */
.masterpieces-filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.filter-btn {
  padding: 0.5rem 1.15rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 9999px;
  color: var(--mec-silver-light);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(138, 149, 158, 0.18);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--mec-emerald);
  color: var(--mec-white);
  border-color: var(--mec-emerald);
  box-shadow: 0 4px 16px var(--mec-emerald-glow);
}

.masterpieces-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1.75rem;
}

.piece-card {
  background: linear-gradient(180deg, rgba(36, 46, 55, 0.7) 0%, rgba(22, 28, 34, 0.9) 100%);
  border: 1px solid rgba(138, 149, 158, 0.16);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.piece-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 168, 126, 0.4);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 168, 126, 0.15);
}

.piece-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem 0.5rem;
  gap: 0.5rem;
  position: relative;
  z-index: 5;
}

.piece-badge-top {
  position: static;
  background: rgba(19, 25, 31, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 168, 126, 0.35);
  color: var(--mec-emerald-light);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 50%;
}

.piece-category-tag {
  position: static;
  background: rgba(29, 37, 44, 0.85);
  color: var(--mec-silver);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid rgba(138, 149, 158, 0.2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 48%;
}

.piece-img-container {
  position: relative;
  width: 100%;
  height: 230px;
  background: radial-gradient(circle, rgba(29, 37, 44, 0.8) 0%, rgba(15, 20, 25, 0.98) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  overflow: hidden;
}

.piece-img-container img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  transition: transform 0.4s ease;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.6));
  border-radius: var(--radius-sm);
}

.piece-card:hover .piece-img-container img {
  transform: scale(1.05);
}

.piece-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.piece-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--mec-white);
  margin-bottom: 0.35rem;
}

.piece-origin {
  font-size: 0.8125rem;
  color: var(--mec-emerald-light);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.piece-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background: rgba(19, 25, 31, 0.6);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  border: 1px solid rgba(138, 149, 158, 0.1);
}

.spec-cell {
  display: flex;
  flex-direction: column;
}

.spec-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--mec-silver);
  letter-spacing: 0.04em;
}

.spec-val {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--mec-text-primary);
}

.piece-excerpt {
  font-size: 0.875rem;
  color: var(--mec-text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.piece-card-footer {
  padding-top: 1rem;
  border-top: 1px solid rgba(138, 149, 158, 0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-card-details {
  color: var(--mec-emerald-light);
  font-size: 0.8125rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap var(--transition-fast);
}

.btn-card-details:hover {
  gap: 0.6rem;
  color: var(--mec-white);
}

/* ==========================================================================
   SECCIÓN: LAS 8 LÍNEAS DE COLECCIÓN & CATÁLOGO GENERAL (160+ PIEZAS)
   ========================================================================== */
.series-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.series-badge-card {
  background: linear-gradient(135deg, rgba(36, 46, 55, 0.6) 0%, rgba(22, 28, 34, 0.8) 100%);
  border: 1px solid rgba(138, 149, 158, 0.15);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.series-badge-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--mec-emerald);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.series-badge-card:hover,
.series-badge-card.active {
  border-color: rgba(0, 168, 126, 0.5);
  background: linear-gradient(135deg, rgba(36, 46, 55, 0.9) 0%, rgba(20, 26, 32, 0.95) 100%);
  transform: translateY(-3px);
}

.series-badge-card.active::before {
  opacity: 1;
}

.series-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.series-code {
  font-family: var(--font-condensed);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mec-emerald-light);
}

.series-count {
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0, 168, 126, 0.12);
  color: var(--mec-emerald-light);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
}

.series-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--mec-white);
  margin-bottom: 0.5rem;
}

.series-desc {
  font-size: 0.8125rem;
  color: var(--mec-silver);
  line-height: 1.5;
}

/* Buscador interactivo de catálogo */
.catalog-search-wrap {
  background: rgba(36, 46, 55, 0.5);
  border: 1px solid rgba(138, 149, 158, 0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.search-input-box {
  position: relative;
  flex-grow: 1;
  min-width: 280px;
}

.search-input-box input {
  width: 100%;
  background: rgba(19, 25, 31, 0.8);
  border: 1px solid rgba(138, 149, 158, 0.25);
  border-radius: 9999px;
  padding: 0.75rem 1.25rem 0.75rem 2.85rem;
  color: var(--mec-white);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

.search-input-box input:focus {
  border-color: var(--mec-emerald);
}

.search-input-box svg {
  position: absolute;
  top: 50%;
  left: 1.1rem;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--mec-silver);
}

.catalog-stats-text {
  font-size: 0.875rem;
  color: var(--mec-silver-light);
}

/* Tabla / Grid de piezas del catálogo */
.pieces-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: 1.15rem;
}

.mini-piece-card {
  background: rgba(36, 46, 55, 0.45);
  border: 1px solid rgba(138, 149, 158, 0.14);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.mini-piece-card:hover {
  background: rgba(36, 46, 55, 0.8);
  border-color: rgba(0, 168, 126, 0.35);
  transform: translateY(-2px);
}

.mini-piece-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.mini-piece-code {
  font-family: monospace;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--mec-emerald-light);
}

.mini-piece-mine {
  font-size: 0.75rem;
  color: var(--mec-silver);
}

.mini-piece-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--mec-white);
  margin-bottom: 0.35rem;
}

.mini-piece-details {
  font-size: 0.8125rem;
  color: var(--mec-text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
  flex-grow: 1;
}

.mini-piece-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--mec-silver);
  padding-top: 0.5rem;
  border-top: 1px solid rgba(138, 149, 158, 0.1);
}

.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

/* ==========================================================================
   SECCIÓN: CIENCIA & FORMACIÓN GEMOLÓGICA
   ========================================================================== */
.science-section {
  background: linear-gradient(180deg, rgba(19, 25, 31, 0.7) 0%, rgba(29, 37, 44, 0.8) 50%, rgba(19, 25, 31, 0.7) 100%);
  border-top: 1px solid rgba(0, 168, 126, 0.15);
  border-bottom: 1px solid rgba(0, 168, 126, 0.15);
}

.science-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.formula-card {
  background: rgba(19, 25, 31, 0.9);
  border: 1px solid rgba(0, 168, 126, 0.3);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.formula-card::after {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(0, 168, 126, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.formula-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--mec-emerald-light);
  margin-bottom: 0.75rem;
}

.formula-chem {
  font-family: var(--font-condensed);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--mec-white);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.formula-chem span {
  color: var(--mec-emerald-light);
}

.formula-name {
  font-size: 1.1rem;
  color: var(--mec-silver-light);
  margin-bottom: 1.75rem;
}

.elements-breakdown {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.element-pill {
  background: rgba(36, 46, 55, 0.6);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(138, 149, 158, 0.15);
}

.element-symbol {
  font-weight: 700;
  color: var(--mec-emerald-light);
  font-size: 1.1rem;
}

.element-role {
  font-size: 0.8125rem;
  color: var(--mec-silver-light);
  margin-top: 0.15rem;
}

.inclusion-callout {
  background: rgba(0, 168, 126, 0.08);
  border-left: 3px solid var(--mec-emerald);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.875rem;
  color: var(--mec-text-secondary);
}

.inclusion-callout strong {
  color: var(--mec-white);
}

.science-content h3 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  color: var(--mec-white);
  margin-bottom: 1.25rem;
}

.science-content p {
  color: var(--mec-silver-light);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.mines-cards-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.mine-chip {
  background: rgba(36, 46, 55, 0.5);
  border: 1px solid rgba(138, 149, 158, 0.15);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.mine-chip-name {
  font-weight: 700;
  color: var(--mec-emerald-light);
  font-size: 0.95rem;
}

.mine-chip-desc {
  font-size: 0.8125rem;
  color: var(--mec-silver);
  margin-top: 0.25rem;
}

/* ==========================================================================
   SECCIÓN: HISTORIA, MITOS & PATRIMONIO MUNDIAL
   ========================================================================== */
.history-timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 0;
}

.history-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, transparent 0%, var(--mec-emerald) 15%, var(--mec-emerald) 85%, transparent 100%);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 1.5rem 2.5rem;
  box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  text-align: left;
}

.timeline-marker {
  position: absolute;
  top: 2rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--mec-emerald);
  border: 3px solid var(--mec-slate-deep);
  box-shadow: 0 0 12px var(--mec-emerald);
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-marker {
  right: -8px;
}

.timeline-item:nth-child(even) .timeline-marker {
  left: -8px;
}

.timeline-card {
  background: rgba(36, 46, 55, 0.65);
  border: 1px solid rgba(138, 149, 158, 0.18);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform var(--transition-fast);
}

.timeline-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 168, 126, 0.4);
}

.timeline-era {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--mec-emerald-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.timeline-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--mec-white);
  margin-bottom: 0.75rem;
}

.timeline-text {
  font-size: 0.875rem;
  color: var(--mec-silver-light);
  line-height: 1.6;
}

/* ==========================================================================
   SECCIÓN: SOBRE LA CORPORACIÓN MEC (45 AÑOS)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about-img-gallery {
  position: relative;
}

.about-main-img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(138, 149, 158, 0.25);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}

.about-badge-floating {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--mec-slate-surface);
  border: 2px solid var(--mec-emerald);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.75rem;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.about-badge-floating .years {
  font-family: var(--font-condensed);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--mec-emerald-light);
  line-height: 1;
}

.about-badge-floating .years-lbl {
  font-size: 0.75rem;
  color: var(--mec-silver);
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 0.25rem;
}

.about-content h2 {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  color: var(--mec-white);
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.about-content p {
  color: var(--mec-silver-light);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.mission-vision-boxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.mv-box {
  background: rgba(19, 25, 31, 0.7);
  border: 1px solid rgba(138, 149, 158, 0.16);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
}

.mv-box h4 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mec-emerald-light);
  margin-bottom: 0.5rem;
}

.mv-box p {
  font-size: 0.8125rem;
  color: var(--mec-silver);
  line-height: 1.55;
  margin-bottom: 0;
}

/* ==========================================================================
   SECCIÓN: PLANEAR VISITA & CONTACTO
   ========================================================================== */
.visit-section {
  background: radial-gradient(circle at 50% 0%, rgba(0, 168, 126, 0.08) 0%, transparent 60%);
}

.visit-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3rem;
}

.visit-info-card {
  background: linear-gradient(145deg, rgba(36, 46, 55, 0.7) 0%, rgba(20, 26, 32, 0.9) 100%);
  border: 1px solid rgba(0, 168, 126, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.visit-info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--mec-white);
  margin-bottom: 1.5rem;
}

.contact-item-row {
  display: flex;
  gap: 1.15rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 168, 126, 0.12);
  border: 1px solid rgba(0, 168, 126, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--mec-emerald-light);
}

.contact-icon-box svg {
  width: 20px;
  height: 20px;
}

.contact-detail-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--mec-silver);
  letter-spacing: 0.06em;
  font-weight: 600;
}

.contact-detail-val {
  font-size: 0.95rem;
  color: var(--mec-text-primary);
  margin-top: 0.2rem;
  line-height: 1.5;
}

.contact-detail-val a:hover {
  color: var(--mec-emerald-light);
}

.visit-form-card {
  background: rgba(36, 46, 55, 0.6);
  border: 1px solid rgba(138, 149, 158, 0.18);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  backdrop-filter: blur(12px);
}

.visit-form-card h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--mec-white);
  margin-bottom: 0.5rem;
}

.visit-form-card p {
  font-size: 0.9rem;
  color: var(--mec-silver);
  margin-bottom: 1.75rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--mec-silver-light);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  background: rgba(19, 25, 31, 0.8);
  border: 1px solid rgba(138, 149, 158, 0.25);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--mec-white);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--mec-emerald);
  box-shadow: 0 0 0 3px rgba(0, 168, 126, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-submit-msg {
  display: none;
  background: rgba(0, 168, 126, 0.15);
  border: 1px solid var(--mec-emerald);
  color: var(--mec-white);
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  text-align: center;
  font-size: 0.875rem;
}

/* ==========================================================================
   MODAL / LIGHTBOX DE INSPECCIÓN DE PIEZAS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 14, 18, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 1.5rem;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: linear-gradient(145deg, rgba(36, 46, 55, 0.95) 0%, rgba(19, 25, 31, 0.98) 100%);
  border: 1px solid rgba(0, 168, 126, 0.35);
  border-radius: var(--radius-xl);
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg), 0 0 50px rgba(0, 168, 126, 0.2);
  position: relative;
  transform: scale(0.94);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-container {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(138, 149, 158, 0.2);
  color: var(--mec-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--mec-emerald);
  transform: rotate(90deg);
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.5rem;
  padding: 2.5rem;
}

.modal-img-stage {
  position: relative;
  background: radial-gradient(circle, rgba(29, 37, 44, 0.8) 0%, rgba(13, 17, 22, 0.98) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(138, 149, 158, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: 380px;
}

.modal-img-stage img {
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.7));
}

.modal-info-col {
  display: flex;
  flex-direction: column;
}

.modal-badge-row {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--mec-white);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.modal-mine-year {
  font-size: 0.9375rem;
  color: var(--mec-emerald-light);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.modal-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.modal-specs-table tr {
  border-bottom: 1px solid rgba(138, 149, 158, 0.12);
}

.modal-specs-table td {
  padding: 0.6rem 0;
}

.modal-specs-table td:first-child {
  color: var(--mec-silver);
  font-weight: 500;
  width: 40%;
}

.modal-specs-table td:last-child {
  color: var(--mec-white);
  font-weight: 600;
}

.modal-desc {
  font-size: 0.9375rem;
  color: var(--mec-silver-light);
  line-height: 1.65;
  margin-bottom: 1.75rem;
}

.modal-cta-row {
  display: flex;
  gap: 1rem;
  margin-top: auto;
}

/* ==========================================================================
   PIE DE PÁGINA (FOOTER)
   ========================================================================== */
.site-footer {
  background-color: #0f1418;
  border-top: 1px solid rgba(0, 168, 126, 0.2);
  padding: 5rem 0 2rem;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand-logo {
  max-width: 240px;
  margin-bottom: 1.25rem;
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--mec-silver);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--mec-white);
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background-color: var(--mec-emerald);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: var(--mec-silver);
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--mec-emerald-light);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(138, 149, 158, 0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--mec-text-muted);
}

/* ==========================================================================
   RESPONSIVIDAD & MEDIA QUERIES (MÓVILES, TABLETS Y ESCRITORIO)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.75rem;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
    max-width: 560px;
    margin: 0 auto;
  }
  .science-grid,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
  .modal-grid {
    grid-template-columns: 1fr;
    padding: 1.75rem;
    gap: 1.75rem;
  }
  .modal-img-stage {
    min-height: 280px;
    padding: 1.25rem;
  }
  .modal-img-stage img {
    max-height: 260px;
  }
}

@media (max-width: 768px) {
  .top-bar-info {
    display: none;
  }
  .top-bar .container {
    justify-content: center;
  }
  .section-padding {
    padding: 4rem 0;
  }
  .section-header {
    margin-bottom: 2.5rem;
  }
  .brand-logo-img {
    height: 42px;
  }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: rgba(19, 25, 31, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(0, 168, 126, 0.25);
    z-index: 999;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle {
    display: flex;
  }
  .history-timeline::before {
    left: 20px;
  }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 50px;
    padding-right: 0;
    text-align: left !important;
  }
  .timeline-marker {
    left: 12px !important;
    right: auto !important;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .mission-vision-boxes {
    grid-template-columns: 1fr;
  }
  .about-img-gallery > div {
    grid-template-columns: 1fr !important;
  }
  .mines-cards-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .hero-section {
    padding: 2.5rem 0 2rem;
  }
  .hero-title {
    font-size: 1.95rem;
    line-height: 1.2;
  }
  .hero-subtitle {
    font-size: 0.95rem;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-group .btn {
    width: 100%;
  }
  .hero-stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    width: 100%;
  }
  .stat-number {
    font-size: 1.5rem;
  }
  .gem-showcase-card {
    padding: 1.25rem;
  }
  .showcase-img-wrap {
    height: 220px;
  }
  .elements-breakdown {
    grid-template-columns: 1fr;
  }
  .formula-card {
    padding: 1.5rem 1.15rem;
  }
  .formula-chem {
    font-size: 1.55rem;
  }
  .piece-img-container {
    height: 200px;
  }
  .piece-card-header {
    padding: 0.85rem 1rem 0.35rem;
  }
  .piece-card-body {
    padding: 1.15rem;
  }
  .catalog-search-wrap {
    padding: 1rem;
  }
  .search-input-box {
    min-width: 100%;
  }
  .search-input-box input {
    font-size: 0.875rem;
    padding-left: 2.5rem;
  }
  .search-input-box svg {
    left: 0.85rem;
  }
  .visit-form-card {
    padding: 1.75rem 1.15rem;
  }
  .modal-container {
    width: 96%;
    padding: 0;
  }
  .modal-grid {
    padding: 1.25rem;
    gap: 1.25rem;
  }
  .modal-title {
    font-size: 1.5rem;
  }
  .modal-img-stage {
    min-height: 200px;
    padding: 0.75rem;
  }
  .modal-img-stage img {
    max-height: 190px;
  }
  .modal-specs-table td {
    padding: 0.45rem 0;
    font-size: 0.8125rem;
  }
}