/* ═══════════════════════════════════════════════════════
   ODYLIUM — SECTIONS v2.0
   ═══════════════════════════════════════════════════════ */

/* ─── HERO ─────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-void);
}

/* Imagen de fondo */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  opacity: 0.35; /* Even darker for desktop */
  transition: opacity 2s ease;
}

/* Gradiente overlay */
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
  background:
    linear-gradient(to top, var(--color-void) 0%, rgba(0,0,0,0.7) 50%, rgba(0,0,0,0.4) 100%),
    linear-gradient(to right, rgba(0,0,0,0.8) 0%, transparent 60%);
}

/* Nombre de marca gigante sobre la imagen */
.hero__brand-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  user-select: none;
}

.hero__brand-text {
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(240, 237, 232, 0.06);
  line-height: 1;
  white-space: nowrap;
  animation: heroReveal 1.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

/* Contenido principal del hero */
.hero__content {
  position: relative;
  z-index: 2;
  padding: var(--space-16) var(--gutter);
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: flex-end;
  gap: var(--space-8);
  padding-bottom: clamp(3rem, 8vh, 5rem);
}

.hero__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-2); /* Reduced from space-6 to bring kicker closer */
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  animation: revealFade 1s ease 0.8s both;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.hero__kicker::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-gold);
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem); /* Further reduced for desktop only */
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  animation: heroReveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

.hero__sub {
  margin-top: var(--space-4); /* Added margin to compensate for reduced container gap */
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-text-primary); /* Changed from secondary for better contrast */
  max-width: 42ch;
  animation: revealUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s both;
}

.hero__cta-group {
  margin-top: var(--space-4); /* Added margin to compensate for reduced container gap */
  display: flex;
  align-items: center;
  gap: var(--space-4);
  animation: revealUp 1s cubic-bezier(0.16, 1, 0.3, 1) 1.1s both;
}

/* Specs del hero (lado derecho) */
.hero__specs {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-end;
  animation: revealFade 1.2s ease 1.3s both;
}

.hero__spec-item {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
}

.hero__spec-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero__spec-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: 0.06em;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  right: var(--gutter);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  animation: revealFade 1s ease 1.8s both;
}

.hero__scroll-text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: lineExpand 1.5s ease 2s infinite alternate;
}

/* ─── SECCIÓN FUNDAMENTOS (Light) ───────────────────────── */
.section--light {
  background: var(--color-light-bg);
  color: var(--color-text-dark);
}

/* Materials & Accordions are now integrated */
.accordion-group--materials {
  margin-top: var(--space-8);
}

.accordion-group {
  margin-top: var(--space-16);
}

/* ─── SECCIÓN TECNOLOGÍA (Dark) ─────────────────────────── */
.section--dark {
  background: var(--color-black);
}

.levels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: var(--space-16);
  border: 1px solid var(--color-border-fine);
}

.levels-grid .level-card:not(:last-child) {
  border-right: 1px solid var(--color-border-fine);
}

.tech-accordions {
  /* removed max-width for full width */
}

/* ─── SECCIÓN COLECCIONES ─────────────────────────────── */
.section--collections {
  background: #ffffff;
  color: var(--color-text-dark);
}

.section--collections .section__title {
  color: var(--color-text-dark);
}
.section--collections .section__subtitle {
  color: var(--color-text-dark-2);
}
.section--collections .section__eyebrow {
  color: var(--color-text-dark-muted);
  border-color: var(--color-light-border);
}

/* CTA button override: dark on white */
.section--collections .btn--cta {
  background: var(--color-surface);
  color: #ffffff;
  border-color: var(--color-surface);
}
.section--collections .btn--cta:hover {
  background: var(--color-black);
  border-color: var(--color-black);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: #e8e8e8; /* Thin separator on white */
}

/* ─── RESPONSIVE HERO ─────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
  }
  .hero__specs {
    display: none;
  }
  .materials-grid {
    grid-template-columns: 1fr;
  }
  .materials-grid .material-block:not(:last-child) {
    border-right: none;
    padding-right: 0;
    margin-right: 0;
    border-bottom: 1px solid var(--color-light-border);
    padding-bottom: var(--space-8);
    margin-bottom: var(--space-4);
  }
  .levels-grid {
    grid-template-columns: 1fr;
  }
  .levels-grid .level-card:not(:last-child) {
    border-right: none;
    border-bottom: 1px solid var(--color-border-fine);
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero__headline {
    font-size: clamp(2.5rem, 10vw, 4rem); /* Reduced from 5rem max */
  }
  .hero__sub {
    font-size: var(--text-base); /* Increased from text-sm for better mobile readability */
    max-width: 100%;
  }
  .hero__brand-text {
    font-size: clamp(5rem, 28vw, 10rem);
  }
  .hero__bg img {
    opacity: 0.95;
    transform: scale(1.15) translateY(-4%); /* Reduced shift by 50% as requested */
    object-position: center;
  }
  .hero__bg::after {
    background: 
      linear-gradient(to top, var(--color-void) 0%, rgba(0,0,0,0.1) 100%); /* Purer black but very light */
  }
  .hero__cta-group {
    flex-wrap: wrap;
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════════════════
   OPTIMIZACIÓN SISTÉMICA
   ═══════════════════════════════════════════════════════ */

.osi-grid {
  margin-top: var(--space-16);
}

.osi-item {
  border-top: 1px solid var(--color-border);
  transition: border-color var(--transition-base);
}
.osi-item:last-child {
  border-bottom: 1px solid var(--color-border);
}
.osi-item[aria-expanded="true"],
.osi-item.is-open {
  border-top-color: var(--color-gold-dim);
}

/* Trigger layout */
.osi-trigger {
  padding: var(--space-8) var(--space-6) !important;
  align-items: center !important;
}
.osi-trigger:hover {
  background: rgba(184, 134, 43, 0.04) !important;
}

.osi-item__head {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex: 1;
  min-width: 0;
}

.osi-item__index {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600; /* Increased for better presence */
  line-height: 0; /* Helps with precise centering in circles */
  color: var(--color-gold);
  
  width: 52px;
  height: 52px;
  border: 1px solid var(--color-gold-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  
  /* Visual correction for serif baseline */
  padding-bottom: 2px; 
  
  transition: all var(--transition-base);
  background: var(--color-gold-glow);
  box-shadow: 0 0 15px rgba(184, 134, 43, 0);
}

.osi-trigger:hover .osi-item__index,
.osi-item[aria-expanded="true"] .osi-item__index {
  border-color: var(--color-gold);
  background: var(--color-gold);
  color: var(--color-void);
  box-shadow: 0 0 20px rgba(184, 134, 43, 0.2);
  transform: scale(1.05);
}

.osi-item__meta {
  flex: 1;
  min-width: 0;
}
.osi-item__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}
.osi-item__summary {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 72ch;
}

/* Inner content */
.osi-inner {
  padding-top: 0 !important;
  padding-bottom: var(--space-10) !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
  flex-direction: column !important;
  display: flex !important;
  gap: var(--space-8) !important;
}

/* Stat row — two columns of key metrics */
.osi-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-6);
  background: rgba(184, 134, 43, 0.04);
  border: 1px solid var(--color-gold-dim);
  border-left: 2px solid var(--color-gold);
  border-radius: var(--radius-sm);
}
.osi-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.osi-stat__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-gold-bright);
  line-height: 1;
  letter-spacing: -0.02em;
}
.osi-stat__unit {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-left: 0.25em;
  font-weight: 400;
}
.osi-stat__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.osi-detail {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 72ch;
}

/* Sources block */
.osi-sources {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-fine);
}

.osi-sources__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-disabled);
}

.osi-sources__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.osi-source-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gold);
  text-decoration: none;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--color-gold-dim);
  border-radius: 2px;
  transition: all var(--transition-fast);
  background: var(--color-gold-glow);
  opacity: 0.8;
}

.osi-source-link::after {
  content: '↗';
  font-size: 0.7em;
  opacity: 0.7;
  transition: transform var(--transition-fast);
}

.osi-source-link:hover {
  opacity: 1;
  border-color: var(--color-gold);
  background: rgba(184, 134, 43, 0.1);
  color: var(--color-gold-bright);
}

.osi-source-link:hover::after {
  transform: translate(2px, -2px);
}


/* Light mode overrides for OSI system — Greyscale/Technical Version */
.section--light .osi-item {
  border-bottom: 1px solid var(--color-light-border);
}

.section--light .osi-item__title {
  color: var(--color-text-dark);
}

.section--light .osi-item__summary {
  color: var(--color-text-dark-muted);
}

.section--light .osi-inner,
.section--dark .osi-inner {
  padding-left: 0 !important; /* Image bleeds to left */
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

.section--light .osi-inner {
  border-top: 1px solid var(--color-light-border);
}

.section--light .osi-detail {
  color: var(--color-text-dark-2);
}

/* Neutral Indicator (Replacing Numbers) */
.section--light .osi-item__index {
  color: var(--color-text-dark-muted);
  border-color: var(--color-light-border);
  background: var(--color-light-bg-2);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.section--light .osi-trigger:hover .osi-item__index,
.section--light .osi-item[aria-expanded="true"] .osi-item__index {
  background: var(--color-text-dark);
  border-color: var(--color-text-dark);
  color: white;
  transform: scale(1.05);
}

.section--light .osi-stat-row {
  background: var(--color-light-bg-2);
  border-color: var(--color-light-border);
  border-left-color: var(--color-text-dark-muted);
}

.section--light .osi-stat__value {
  color: var(--color-text-dark);
}

.section--light .osi-stat__label {
  color: var(--color-text-dark-muted);
}

/* Light Mode Overrides for Sources */
.section--light .osi-sources {
  border-top-color: var(--color-light-border);
}

.section--light .osi-sources__label {
  color: var(--color-text-dark-muted);
}

.section--light .osi-source-link {
  color: var(--color-text-dark);
  border-color: var(--color-light-border);
  background: var(--color-light-bg-2);
}

.section--light .osi-source-link:hover {
  background: var(--color-text-dark);
  border-color: var(--color-text-dark);
  color: white;
}

/* Material specific layout within OSI inner */
.osi-material-layout {
  display: grid;
  grid-template-columns: 400px 1fr; /* Larger image area */
  gap: 0; /* No gap between image and text container to control padding manually */
  align-items: stretch;
}

.osi-material-img-container {
  position: relative;
  overflow: hidden;
  background: var(--color-light-bg-2);
  height: 100%;
  min-height: 450px;
}

.section--dark .osi-material-img-container {
  background: var(--color-bg-alt);
}

.osi-material-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.osi-material-layout:hover .osi-material-img {
  transform: scale(1.05);
}

.osi-material-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-12) var(--space-12) var(--space-12);
  justify-content: center;
}

/* Responsive */
@media (max-width: 1024px) {
  .osi-material-layout {
    grid-template-columns: 1fr;
  }
  .osi-material-img-container {
    height: 350px;
    min-height: auto;
  }
  .osi-material-text {
    padding: var(--space-8);
  }
}

@media (max-width: 768px) {
  .osi-trigger {
    padding: var(--space-6) 0 !important; /* Maximiza el espacio horizontal */
  }
  .osi-item__head {
    gap: var(--space-3);
    align-items: flex-start;
  }
  .osi-item__index {
    display: none; /* UI-UX PRO MAX: Oculta el círculo gigante en mobile */
  }
  .osi-item__meta {
    padding-left: var(--space-3);
    border-left: 2px solid var(--color-gold-dim);
    transition: border-color var(--transition-base);
  }
  .osi-item[aria-expanded="true"] .osi-item__meta,
  .osi-trigger:hover .osi-item__meta {
    border-left-color: var(--color-gold);
  }
  .section--light .osi-item__meta {
    border-left-color: var(--color-light-border);
  }
  .section--light .osi-item[aria-expanded="true"] .osi-item__meta,
  .section--light .osi-trigger:hover .osi-item__meta {
    border-left-color: var(--color-text-dark);
  }
  .osi-item__title {
    font-size: var(--text-lg); /* Tipografía más refinada y proporcionada */
    margin-bottom: var(--space-2);
  }
  .osi-item__summary {
    font-size: var(--text-base); /* Equiparado con el texto desplegado (.osi-detail) */
    line-height: 1.6;
  }
  .osi-inner {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
  .osi-stat-row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
  }
}