/* ═══════════════════════════════════════════════════════════
   CLAVIS — DESIGN SYSTEM
   Ultra-premium black & gold luxury sci-fi interface
═══════════════════════════════════════════════════════════ */

/* ── CSS VARIABLES ─────────────────────────────────────── */
:root {
  /* Gold palette */
  --gold-primary:   #C9A84C;
  --gold-bright:    #F0C040;
  --gold-light:     #E8D5A0;
  --gold-dim:       #8A6E2F;
  --gold-glow:      rgba(201,168,76,0.35);
  --gold-glow-soft: rgba(201,168,76,0.12);
  --gold-glow-hard: rgba(240,192,64,0.6);

  /* Black/dark palette */
  --black-deep:     #050505;
  --black-rich:     #0A0A0A;
  --black-mid:      #111111;
  --black-panel:    #141414;
  --black-card:     #181818;
  --black-border:   #222222;
  --black-hover:    #1E1E1E;

  /* Text */
  --text-primary:   #F0EAD6;
  --text-secondary: #A89878;
  --text-muted:     #5A5040;
  --text-gold:      #C9A84C;

  /* Glass */
  --glass-bg:       rgba(20,18,14,0.75);
  --glass-border:   rgba(201,168,76,0.2);
  --glass-hover:    rgba(201,168,76,0.08);

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  20px;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-mid:    0.3s ease;
  --transition-slow:   0.6s cubic-bezier(0.16,1,0.3,1);

  /* Sidebar */
  --sidebar-w: 260px;
}

/* ── RESET & BASE ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--black-deep);
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; cursor: pointer; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }
img { max-width: 100%; display: block; }

/* ── TYPOGRAPHY ─────────────────────────────────────────── */
.font-display  { font-family: 'Cinzel', serif; }
.font-tech     { font-family: 'Orbitron', monospace; }
.font-body     { font-family: 'Rajdhani', sans-serif; }

h1, h2, h3 { font-family: 'Cinzel', serif; line-height: 1.15; }
h4, h5, h6 { font-family: 'Rajdhani', sans-serif; font-weight: 600; letter-spacing: 0.05em; }

.gold-text { color: var(--gold-primary); }
.section-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--space-md);
}
.section-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

/* ── SCROLLBAR ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--black-rich); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-primary); }

/* ── PAGE SYSTEM ────────────────────────────────────────── */
.page {
  display: none;
  min-height: 100vh;
  position: relative;
}
.page.active { display: block; }

/* ── GLOBAL NAV ─────────────────────────────────────────── */
.global-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(5,5,5,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-mid);
}
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  flex-shrink: 0;
}
.logo-mark {
  font-size: 1.4rem;
  color: var(--gold-primary);
  filter: drop-shadow(0 0 8px var(--gold-glow));
  line-height: 1;
}
.logo-text {
  font-family: 'Orbitron', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text-primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex: 1;
}
.nav-link {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--gold-primary);
  transform: scaleX(0);
  transition: transform var(--transition-mid);
}
.nav-link:hover { color: var(--gold-primary); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-cta {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black-deep);
  background: var(--gold-primary);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-mid);
  flex-shrink: 0;
}
.nav-cta:hover {
  background: var(--gold-bright);
  box-shadow: 0 0 20px var(--gold-glow);
}
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  margin-left: auto;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gold-primary);
  border-radius: 1px;
  transition: var(--transition-mid);
}
.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--glass-border);
  background: rgba(5,5,5,0.95);
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-link {
  padding: var(--space-sm) 0;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 1px solid var(--black-border);
  transition: color var(--transition-fast);
}
.nav-mobile-link:hover { color: var(--gold-primary); }

/* ── BUTTONS ────────────────────────────────────────────── */
.btn-primary {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 2rem;
  background: transparent;
  border: 1px solid var(--gold-primary);
  color: var(--gold-primary);
  font-family: 'Orbitron', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition-mid);
  cursor: pointer;
}
.btn-primary .btn-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, var(--gold-glow-soft) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-mid);
}
.btn-primary:hover {
  color: var(--black-deep);
  background: var(--gold-primary);
  box-shadow: 0 0 30px var(--gold-glow), 0 0 60px var(--gold-glow-soft);
}
.btn-primary:hover .btn-glow { opacity: 1; }
.btn-primary .btn-arrow {
  transition: transform var(--transition-mid);
  font-style: normal;
}
.btn-primary:hover .btn-arrow { transform: translateX(4px); }
.btn-primary.btn-large { padding: 1.1rem 2.5rem; font-size: 0.75rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 1.75rem;
  background: transparent;
  border: 1px solid var(--black-border);
  color: var(--text-secondary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-mid);
  cursor: pointer;
}
.btn-ghost:hover {
  border-color: var(--gold-dim);
  color: var(--gold-primary);
}
.btn-ghost.small { padding: 0.5rem 1rem; font-size: 0.75rem; }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--black-border);
  color: var(--text-secondary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-mid);
  cursor: pointer;
  margin-bottom: var(--space-lg);
}
.back-btn:hover { border-color: var(--gold-dim); color: var(--gold-primary); }

/* ── FILTER CHIPS ───────────────────────────────────────── */
.filter-chip {
  padding: 0.4rem 1rem;
  background: transparent;
  border: 1px solid var(--black-border);
  color: var(--text-secondary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 100px;
  transition: all var(--transition-mid);
  cursor: pointer;
  white-space: nowrap;
}
.filter-chip:hover { border-color: var(--gold-dim); color: var(--gold-primary); }
.filter-chip.active {
  background: var(--gold-glow-soft);
  border-color: var(--gold-primary);
  color: var(--gold-primary);
}

/* ── HERO SECTION ───────────────────────────────────────── */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 64px;
}

.hero-vault-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.vault-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--gold-glow-soft);
}
.vault-ring-1 { width: 500px; height: 500px; animation: ringPulse 4s ease-in-out infinite; }
.vault-ring-2 { width: 700px; height: 700px; animation: ringPulse 4s ease-in-out infinite 0.8s; }
.vault-ring-3 { width: 900px; height: 900px; animation: ringPulse 4s ease-in-out infinite 1.6s; }
.vault-core-glow {
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.15) 0%, rgba(201,168,76,0.05) 40%, transparent 70%);
  animation: coreBreath 3s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.hero-emblem {
  position: relative;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}
.emblem-outer-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--gold-glow);
  animation: spinSlow 12s linear infinite;
}
.emblem-outer-ring::before {
  content: '';
  position: absolute;
  top: -3px; left: 50%;
  transform: translateX(-50%);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold-primary);
  box-shadow: 0 0 10px var(--gold-glow-hard);
}
.emblem-inner-ring {
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 1px solid var(--gold-glow-soft);
  animation: spinSlow 8s linear infinite reverse;
}
.emblem-center {
  position: relative;
  z-index: 1;
}
.emblem-hex {
  font-size: 2.5rem;
  color: var(--gold-primary);
  filter: drop-shadow(0 0 15px var(--gold-glow-hard));
  animation: coreBreath 3s ease-in-out infinite;
}
.emblem-hex.large { font-size: 4rem; }

.hero-brand { text-align: center; }
.hero-brand-pre {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  color: var(--gold-dim);
  display: block;
  margin-bottom: var(--space-sm);
}
.hero-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 900;
  letter-spacing: 0.2em;
  color: var(--text-primary);
  line-height: 1;
  text-shadow: 0 0 60px var(--gold-glow), 0 0 120px var(--gold-glow-soft);
}
.hero-title-line {
  width: 120px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  margin: var(--space-md) auto 0;
}

.hero-tagline {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.5;
  letter-spacing: 0.05em;
}
.hero-tagline em {
  font-style: italic;
  color: var(--gold-primary);
}
.hero-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
  letter-spacing: 0.03em;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  justify-content: center;
}
.btn-enter {
  padding: 1rem 2.5rem;
  font-size: 0.75rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-top: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-primary);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--glass-border);
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  z-index: 2;
}
.hero-scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ── VAULT CORE SECTION ─────────────────────────────────── */
.vault-core-section {
  position: relative;
  padding: var(--space-3xl) 0;
  overflow: hidden;
}
.vault-core-standalone {
  padding: var(--space-3xl) 0;
}
.vc-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.vc-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
.vc-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.vc-sphere-wrap {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.vc-sphere {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--gold-bright), var(--gold-primary) 40%, var(--gold-dim) 70%, #2A1A00);
  box-shadow:
    0 0 40px var(--gold-glow),
    0 0 80px var(--gold-glow-soft),
    inset 0 0 30px rgba(0,0,0,0.5);
  position: relative;
  z-index: 2;
  animation: sphereFloat 4s ease-in-out infinite;
}
.vc-sphere-inner {
  position: absolute;
  inset: 15px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(255,255,255,0.15), transparent 60%);
}
.vc-sphere-core {
  position: absolute;
  inset: 35px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240,192,64,0.8), transparent);
  animation: coreBreath 2s ease-in-out infinite;
}
.vc-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--gold-glow-soft);
}
.vc-orbit-1 { width: 200px; height: 200px; animation: orbitSpin 6s linear infinite; }
.vc-orbit-2 { width: 260px; height: 260px; animation: orbitSpin 10s linear infinite reverse; transform: rotateX(60deg); }
.vc-orbit-3 { width: 310px; height: 310px; animation: orbitSpin 15s linear infinite; transform: rotateY(60deg); }
.vc-orbit-dot {
  position: absolute;
  top: -4px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold-primary);
  box-shadow: 0 0 12px var(--gold-glow-hard);
}
.vc-ring-outer {
  position: absolute;
  width: 320px; height: 40px;
  border-radius: 50%;
  border: 2px solid var(--gold-glow);
  animation: ringRotate 8s linear infinite;
}
.vc-ring-mid {
  position: absolute;
  width: 240px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--gold-glow-soft);
  animation: ringRotate 5s linear infinite reverse;
}

.vc-content { padding: var(--space-lg) 0; }
.vc-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}
.vc-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}
.vc-feat {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.vc-feat-icon { color: var(--gold-primary); font-size: 0.7rem; }

/* ── CORRIDOR SECTION ───────────────────────────────────── */
.corridor-section {
  position: relative;
  padding: var(--space-3xl) 0;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.corridor-tunnel {
  position: absolute;
  inset: 0;
  perspective: 800px;
  overflow: hidden;
}
.corridor-floor {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(to top, var(--black-mid) 0%, transparent 100%);
  transform: perspective(400px) rotateX(30deg);
  transform-origin: bottom;
}
.corridor-ceiling {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(to bottom, var(--black-mid) 0%, transparent 100%);
  transform: perspective(400px) rotateX(-30deg);
  transform-origin: top;
}
.corridor-left-wall {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 30%;
  background: linear-gradient(to right, var(--black-mid) 0%, transparent 100%);
}
.corridor-right-wall {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 30%;
  background: linear-gradient(to left, var(--black-mid) 0%, transparent 100%);
}
.corridor-light-strip {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--gold-glow), var(--gold-primary), var(--gold-glow), transparent);
  animation: lightPulse 3s ease-in-out infinite;
}
.corridor-light-strip.left { left: 15%; }
.corridor-light-strip.right { right: 15%; }
.corridor-vanish {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%);
}

.corridor-panels {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.corridor-panel {
  position: absolute;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  pointer-events: all;
  transition: all var(--transition-mid);
}
.corridor-panel:hover {
  border-color: var(--gold-primary);
  box-shadow: 0 0 20px var(--gold-glow-soft);
}
.corridor-panel.left { left: 3%; }
.corridor-panel.right { right: 3%; }
.corridor-panel.panel-1 { top: 20%; }
.corridor-panel.panel-2 { top: 45%; }
.corridor-panel.panel-3 { top: 70%; }
.panel-cat-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold-primary);
  letter-spacing: 0.05em;
}
.panel-cat-count {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.corridor-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 500px;
  padding: var(--space-xl);
}
.corridor-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

/* ── NETWORK SECTION ────────────────────────────────────── */
.network-section {
  position: relative;
  padding: var(--space-3xl) 0;
  overflow: hidden;
}
.network-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.04) 0%, transparent 70%);
}
.network-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  padding: 0 var(--space-xl);
}
.network-sub {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.network-canvas-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}
#networkCanvas {
  width: 100%;
  height: 500px;
  display: block;
}

/* ── FINAL CTA SECTION ──────────────────────────────────── */
.final-cta-section {
  position: relative;
  padding: var(--space-3xl) 0;
  overflow: hidden;
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#ctaParticleCanvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
.final-cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl);
}
.final-emblem { margin-bottom: var(--space-sm); }
.final-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
}
.final-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 400px;
}

/* ── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background: var(--black-mid);
  border-top: 1px solid var(--black-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-brand .logo-mark { font-size: 1.8rem; }
.footer-brand .logo-text { font-size: 1.2rem; margin-left: var(--space-sm); }
.footer-tagline {
  margin-top: var(--space-md);
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 220px;
}
.footer-col h4 {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--gold-primary); }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl) 0;
  border-top: 1px solid var(--black-border);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ── INNER PAGE HEADER ──────────────────────────────────── */
.inner-page-header {
  position: relative;
  padding: calc(64px + var(--space-3xl)) var(--space-xl) var(--space-2xl);
  text-align: center;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--black-mid) 0%, var(--black-deep) 100%);
  border-bottom: 1px solid var(--black-border);
}
.inner-page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.inner-page-header.compact {
  padding: calc(64px + var(--space-xl)) var(--space-xl) var(--space-xl);
}
.inner-particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
.iph-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}
.iph-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
}
.iph-sub {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ── CATEGORIES GRID ────────────────────────────────────── */
.categories-grid-wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.categories-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
}

/* ── CATEGORY PORTAL CARD ───────────────────────────────── */
.portal-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  cursor: pointer;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  backdrop-filter: blur(10px);
}
.portal-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-glow-soft) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-mid);
}
.portal-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}
.portal-card:hover {
  border-color: var(--gold-primary);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--gold-glow-soft);
}
.portal-card:hover::before { opacity: 1; }
.portal-card:hover::after { transform: scaleX(1); }

.portal-card-glow {
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-mid);
}
.portal-card:hover .portal-card-glow { opacity: 1; }

.portal-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  display: block;
  filter: drop-shadow(0 0 8px var(--gold-glow));
  transition: transform var(--transition-mid);
}
.portal-card:hover .portal-icon { transform: scale(1.1); }

.portal-tag {
  font-family: 'Orbitron', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  display: block;
}
.portal-name {
  font-family: 'Cinzel', serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}
.portal-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}
.portal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--black-border);
}
.portal-count {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  color: var(--gold-dim);
  letter-spacing: 0.1em;
}
.portal-arrow {
  font-size: 0.9rem;
  color: var(--gold-primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition-mid);
}
.portal-card:hover .portal-arrow { opacity: 1; transform: translateX(0); }

/* ── COURSE CARDS ───────────────────────────────────────── */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.course-card {
  position: relative;
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.16,1,0.3,1);
}
.course-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4), 0 0 20px var(--gold-glow-soft);
}
.course-card-thumb {
  position: relative;
  height: 160px;
  background: linear-gradient(135deg, var(--black-mid) 0%, #1A1200 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.course-card-thumb-icon {
  font-size: 3rem;
  opacity: 0.4;
  filter: drop-shadow(0 0 20px var(--gold-glow));
  transition: all var(--transition-mid);
}
.course-card:hover .course-card-thumb-icon { opacity: 0.7; transform: scale(1.1); }
.course-card-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, var(--black-card) 100%);
}
.course-card-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 3px 8px;
  background: var(--gold-primary);
  color: var(--black-deep);
  font-family: 'Orbitron', monospace;
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  border-radius: var(--radius-sm);
}
.course-card-badge.premium { background: var(--gold-primary); }
.course-card-badge.new { background: #2A6A3A; color: #7FD99A; }
.course-card-badge.hot { background: #6A2A2A; color: #FF8A8A; }

.course-card-body {
  padding: var(--space-md) var(--space-lg);
}
.course-card-cat {
  font-family: 'Orbitron', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}
.course-card-title {
  font-family: 'Cinzel', serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: var(--space-sm);
}
.course-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}
.course-card-meta span { display: flex; align-items: center; gap: 4px; }

.course-progress-wrap {
  margin-bottom: var(--space-sm);
}
.course-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.course-progress-bar {
  height: 3px;
  background: var(--black-border);
  border-radius: 2px;
  overflow: hidden;
}
.course-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold-primary));
  border-radius: 2px;
  transition: width 0.6s ease;
}

.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--black-border);
}
.course-level {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 100px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.course-level.beginner { background: rgba(42,106,58,0.2); color: #7FD99A; border: 1px solid rgba(127,217,154,0.2); }
.course-level.intermediate { background: rgba(201,168,76,0.1); color: var(--gold-primary); border: 1px solid var(--gold-glow-soft); }
.course-level.advanced { background: rgba(106,42,42,0.2); color: #FF8A8A; border: 1px solid rgba(255,138,138,0.2); }

.course-fav-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  transition: color var(--transition-fast);
  padding: 4px;
}
.course-fav-btn:hover { color: var(--gold-primary); }
.course-fav-btn.active { color: var(--gold-primary); }

/* ── CATEGORY DETAIL PAGE ───────────────────────────────── */
.cat-detail-header {
  text-align: left;
}
.cat-detail-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  display: block;
}
.cat-detail-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}
.cat-detail-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
}

.cat-detail-body {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}
.cat-detail-search-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.inner-search {
  width: 100%;
  max-width: 500px;
  padding: 0.75rem 1.25rem;
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.9rem;
  transition: border-color var(--transition-mid);
}
.inner-search:focus {
  outline: none;
  border-color: var(--gold-dim);
}
.cat-detail-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ── COURSE DETAIL PAGE ─────────────────────────────────── */
.course-detail-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(64px + var(--space-2xl)) var(--space-xl) var(--space-3xl);
}
.cd-back { margin-bottom: var(--space-xl); }
.cd-hero {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.cd-main {}
.cd-breadcrumb {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.cd-breadcrumb span { color: var(--gold-dim); cursor: pointer; }
.cd-breadcrumb span:hover { color: var(--gold-primary); }
.cd-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}
.cd-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}
.cd-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.cd-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}
.cd-progress-section {
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.cd-progress-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
}
.cd-progress-bar {
  height: 6px;
  background: var(--black-border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}
.cd-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold-primary));
  border-radius: 3px;
}
.cd-progress-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cd-sidebar {}
.cd-thumb {
  position: relative;
  height: 220px;
  background: linear-gradient(135deg, var(--black-mid), #1A1200);
  border-radius: var(--radius-lg);
  border: 1px solid var(--black-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  overflow: hidden;
}
.cd-thumb-icon {
  font-size: 4rem;
  opacity: 0.5;
  filter: drop-shadow(0 0 20px var(--gold-glow));
}
.cd-thumb-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 4px 10px;
  background: var(--gold-primary);
  color: var(--black-deep);
  font-family: 'Orbitron', monospace;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  border-radius: var(--radius-sm);
}
.cd-action-btn {
  width: 100%;
  padding: 1rem;
  background: var(--gold-primary);
  color: var(--black-deep);
  font-family: 'Orbitron', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-mid);
  margin-bottom: var(--space-md);
}
.cd-action-btn:hover {
  background: var(--gold-bright);
  box-shadow: 0 0 30px var(--gold-glow);
}
.cd-info-list {
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cd-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--black-border);
  font-size: 0.82rem;
}
.cd-info-item:last-child { border-bottom: none; }
.cd-info-label { color: var(--text-muted); }
.cd-info-value { color: var(--text-primary); font-weight: 600; }

.cd-lessons-section {
  margin-top: var(--space-2xl);
}
.cd-lessons-title {
  font-family: 'Cinzel', serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--black-border);
}
.lesson-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.lesson-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-mid);
}
.lesson-item:hover { border-color: var(--gold-dim); background: var(--black-hover); }
.lesson-item.completed { border-color: rgba(127,217,154,0.2); }
.lesson-num {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  color: var(--gold-dim);
  min-width: 24px;
}
.lesson-title {
  flex: 1;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}
.lesson-duration {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.lesson-status {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.lesson-item.completed .lesson-status { color: #7FD99A; }

.cd-related-section {
  margin-top: var(--space-2xl);
}
.cd-related-title {
  font-family: 'Cinzel', serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

/* ── LIBRARY LAYOUT ─────────────────────────────────────── */
.library-layout {
  display: flex;
  min-height: 100vh;
  padding-top: 64px;
}

.library-sidebar {
  width: var(--sidebar-w);
  background: var(--black-mid);
  border-right: 1px solid var(--black-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition-slow);
  overflow-y: auto;
}
.library-sidebar.collapsed { transform: translateX(calc(-1 * var(--sidebar-w))); }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 1px solid var(--black-border);
  cursor: pointer;
}
.sidebar-nav {
  flex: 1;
  padding: var(--space-lg) 0;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0.75rem var(--space-lg);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}
.sidebar-link:hover { color: var(--text-primary); background: var(--glass-hover); }
.sidebar-link.active {
  color: var(--gold-primary);
  background: var(--gold-glow-soft);
  border-left-color: var(--gold-primary);
}
.sl-icon { font-size: 0.9rem; color: inherit; }
.sidebar-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--black-border);
}

.library-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100%;
  transition: margin-left var(--transition-slow);
}
.library-main.expanded { margin-left: 0; }

.library-topbar {
  position: sticky;
  top: 64px;
  z-index: 50;
  background: rgba(10,10,10,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--black-border);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.sidebar-toggle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  padding: 4px;
  transition: color var(--transition-fast);
}
.sidebar-toggle:hover { color: var(--gold-primary); }
.lib-search-wrap {
  flex: 1;
  position: relative;
  max-width: 500px;
}
.lib-search {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.9rem;
  transition: border-color var(--transition-mid);
}
.lib-search:focus { outline: none; border-color: var(--gold-dim); }
.lib-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
}
.lib-topbar-right { margin-left: auto; }

.lib-panel { display: none; padding: var(--space-2xl) var(--space-xl); }
.lib-panel.active { display: block; }
.lib-panel-header { margin-bottom: var(--space-2xl); }
.lib-panel-header h2 { font-family: 'Cinzel', serif; font-size: 1.8rem; font-weight: 700; margin-bottom: var(--space-sm); }
.lib-panel-header p { color: var(--text-secondary); font-size: 0.9rem; }

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}
.dash-stat {
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: border-color var(--transition-mid);
}
.dash-stat:hover { border-color: var(--gold-dim); }
.ds-num {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-primary);
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.ds-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.lib-section-title {
  font-family: 'Cinzel', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--black-border);
}
.lib-filter-row {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}
.lib-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--black-border);
  margin-bottom: var(--space-xl);
}
.lib-tab {
  padding: 0.75rem 1.5rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-mid);
  cursor: pointer;
}
.lib-tab:hover { color: var(--text-secondary); }
.lib-tab.active { color: var(--gold-primary); border-bottom-color: var(--gold-primary); }

/* ── SETTINGS ───────────────────────────────────────────── */
.settings-panel { max-width: 600px; }
.settings-group {
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
}
.settings-group h3 {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--black-border);
}
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.setting-toggle {
  padding: 4px 12px;
  background: var(--gold-glow-soft);
  border: 1px solid var(--gold-dim);
  color: var(--gold-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--black-border);
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition-mid);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 3px; top: 3px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition-mid);
}
.toggle-switch input:checked + .toggle-slider { background: var(--gold-glow-soft); border: 1px solid var(--gold-dim); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); background: var(--gold-primary); }

/* ── SEARCH PAGE ────────────────────────────────────────── */
.search-page-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(64px + var(--space-2xl)) var(--space-xl) var(--space-3xl);
}
.search-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-xl);
}
.search-bar-large {
  position: relative;
  margin-bottom: var(--space-lg);
}
.search-icon-large {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--gold-dim);
}
.search-input-large {
  width: 100%;
  padding: 1.1rem 3.5rem 1.1rem 3.5rem;
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  transition: border-color var(--transition-mid);
}
.search-input-large:focus { outline: none; border-color: var(--gold-primary); box-shadow: 0 0 20px var(--gold-glow-soft); }
.search-input-large::placeholder { color: var(--text-muted); }
.search-clear {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 4px;
  transition: color var(--transition-fast);
}
.search-clear:hover { color: var(--gold-primary); }
.search-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}
.search-suggestions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--black-card);
  border: 1px solid var(--black-border);
  border-radius: var(--radius-lg);
}
.search-suggest-col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.suggest-tags { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.suggest-tag {
  padding: 0.35rem 0.85rem;
  background: var(--black-mid);
  border: 1px solid var(--black-border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.suggest-tag:hover { border-color: var(--gold-dim); color: var(--gold-primary); }
.search-results-header {
  margin-bottom: var(--space-lg);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ── MY LIBRARY STANDALONE ──────────────────────────────── */
.my-library-body {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}

/* ── EMPTY STATE ────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: var(--space-lg); opacity: 0.3; }
.empty-state h3 { font-family: 'Cinzel', serif; font-size: 1.2rem; margin-bottom: var(--space-sm); color: var(--text-secondary); }
.empty-state p { font-size: 0.88rem; }

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .vc-container { grid-template-columns: 1fr; text-align: center; }
  .vc-visual { margin-bottom: var(--space-xl); }
  .vc-features { justify-content: center; }
  .cd-hero { grid-template-columns: 1fr; }
  .cd-sidebar { order: -1; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav-inner { padding: 0 var(--space-lg); }

  .hero-stats { flex-direction: column; gap: var(--space-md); }
  .stat-divider { width: 60px; height: 1px; }

  .corridor-panel { display: none; }
  .corridor-panel.panel-1 { display: flex; }

  .library-sidebar { transform: translateX(calc(-1 * var(--sidebar-w))); }
  .library-sidebar.open { transform: translateX(0); }
  .library-main { margin-left: 0; }

  .search-suggestions { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-xl); }
  .dashboard-stats { grid-template-columns: repeat(2, 1fr); }

  .vc-sphere-wrap { width: 240px; height: 240px; }
  .vc-sphere { width: 100px; height: 100px; }
  .vc-orbit-1 { width: 150px; height: 150px; }
  .vc-orbit-2 { width: 190px; height: 190px; }
  .vc-orbit-3 { width: 230px; height: 230px; }
  .vc-ring-outer { width: 240px; }
  .vc-ring-mid { width: 180px; }

  .categories-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .course-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

@media (max-width: 480px) {
  :root { --space-xl: 1.5rem; --space-2xl: 2.5rem; --space-3xl: 4rem; }
  .hero-title { font-size: 3.5rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .categories-grid { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: 1fr; }
  .dashboard-stats { grid-template-columns: 1fr 1fr; }
  .lib-tabs { overflow-x: auto; }
  .lib-tab { white-space: nowrap; }
}