/* ═══════════════════════════════════════════════════════════════
   Breaking Bad — Desert Industrial Stylesheet
   Palette: dusty sand · hazard yellow · rust · charred black · bone
   Mood: analog film · gritty realism · hazmat · New Mexico desert
═══════════════════════════════════════════════════════════════ */

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

/* ── CSS Variables ── */
:root {
  /* Backgrounds — charred, not pure black */
  --bb-void:      #0d0b08;   /* deepest background */
  --bb-black:     #111009;   /* main bg */
  --bb-dark:      #1a1208;   /* section alt */
  --bb-panel:     #1f1a0f;   /* card/panel bg */
  --bb-border:    #2e2416;   /* default border */
  --bb-border-hi: #4a3820;   /* highlighted border */

  /* Desert palette */
  --bb-sand:      #c8a96e;   /* warm sand */
  --bb-bone:      #d4bc8a;   /* lighter sand/bone */
  --bb-dust:      #8a7355;   /* muted dust */
  --bb-rust:      #8b3a1a;   /* rust/burnt sienna */
  --bb-rust-hi:   #b04a22;   /* brighter rust */
  --bb-earth:     #5c3d1e;   /* dark earth */

  /* Hazard accents */
  --bb-hazard:    #e8c547;   /* hazmat suit yellow */
  --bb-hazard-hi: #f5d060;   /* brighter hazard */
  --bb-hazard-dk: #a88a2a;   /* dark hazard */
  --bb-amber:     #c97d20;   /* warm amber */

  /* Text */
  --bb-text:      #d4bc8a;   /* primary text — warm bone */
  --bb-text-dim:  #7a6545;   /* dimmed text */
  --bb-text-faint:#4a3820;   /* very faint */

  /* Fonts */
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'Source Sans 3', sans-serif;
  --font-mono:    'Share Tech Mono', monospace;
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
  background-color: var(--bb-black);
  color: var(--bb-text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bb-void); }
::-webkit-scrollbar-thumb { background: var(--bb-hazard-dk); border-radius: 0; }

/* ═══════════════════════════════════════════════════════════════
   GRAIN & TEXTURE OVERLAYS
   Heavy analog film grain — the defining visual layer
═══════════════════════════════════════════════════════════════ */

/* SVG grain filter — applied via .grain-layer */
.grain-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  opacity: 1;
  /* High-frequency fractal noise for analog grain */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeBlend in='SourceGraphic' mode='multiply'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23grain)' opacity='0.18'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
  mix-blend-mode: overlay;
}

/* Vignette — darkens edges like a film frame */
.vignette-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 8999;
  background: radial-gradient(
    ellipse 85% 80% at 50% 50%,
    transparent 40%,
    rgba(8, 6, 3, 0.55) 100%
  );
}

/* Horizontal burn lines — subtle analog artifact */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 0, 0, 0.06) 3px,
    rgba(0, 0, 0, 0.06) 4px
  );
  pointer-events: none;
  z-index: 8998;
}

/* ═══════════════════════════════════════════════════════════════
   COMPONENTS
═══════════════════════════════════════════════════════════════ */

/* ── Panel (replaces glass — no blur, solid industrial) ── */
.panel {
  background: var(--bb-panel);
  border: 1px solid var(--bb-border);
}

.panel-hazard {
  background: var(--bb-panel);
  border: 1px solid var(--bb-hazard-dk);
  border-left: 3px solid var(--bb-hazard);
}

.panel-rust {
  background: var(--bb-panel);
  border: 1px solid var(--bb-rust);
  border-left: 3px solid var(--bb-rust-hi);
}

/* ── Hazard text — no neon glow, just raw color ── */
.text-hazard {
  color: var(--bb-hazard);
}
.text-sand {
  color: var(--bb-sand);
}
.text-rust {
  color: var(--bb-rust-hi);
}
.text-bone {
  color: var(--bb-bone);
}
.text-dust {
  color: var(--bb-dust);
}
.text-amber {
  color: var(--bb-amber);
}

/* ── Periodic element badge ── */
.periodic-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  padding: 4px 10px;
  line-height: 1;
  position: relative;
  /* Rough, no border-radius */
}
.periodic-badge .atomic-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  opacity: 0.6;
  align-self: flex-start;
}
.periodic-badge .symbol {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1;
}
.periodic-badge .element-name {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

/* ── CTA Buttons — industrial, no glow ── */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
  cursor: pointer;
  background: var(--bb-hazard);
  color: var(--bb-void);
  border: 2px solid var(--bb-hazard);
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.btn-primary:hover {
  background: var(--bb-hazard-hi);
  border-color: var(--bb-hazard-hi);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--bb-border-hi);
  color: var(--bb-dust);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.btn-secondary:hover {
  background: var(--bb-panel);
  border-color: var(--bb-sand);
  color: var(--bb-sand);
  transform: translateY(-1px);
}

/* ── Section divider — hazard stripe ── */
.chem-divider {
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--bb-hazard)    0px,
    var(--bb-hazard)    18px,
    var(--bb-void)      18px,
    var(--bb-void)      24px
  );
  opacity: 0.35;
}

/* ── Stat box ── */
.stat-box {
  border-left: 3px solid var(--bb-hazard);
  transition: border-color 0.25s ease;
}
.stat-box:hover { border-color: var(--bb-sand); }

/* ── Progress bar ── */
.progress-bar {
  height: 3px;
  background: var(--bb-hazard);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.progress-bar.active { transform: scaleX(1); }

/* ── Chemical formula decoration ── */
.formula-bg {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(200, 169, 110, 0.07);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

/* ── Image treatment — desaturated, warm-tinted ── */
.img-cinematic {
  filter: saturate(0.45) contrast(1.15) sepia(0.25) brightness(0.85);
  transition: filter 0.4s ease;
}
.img-cinematic:hover {
  filter: saturate(0.6) contrast(1.1) sepia(0.15) brightness(0.9);
}

/* ── Image placeholder ── */
.img-placeholder {
  background: linear-gradient(160deg, #1a1208 0%, #2c1f0e 50%, #111009 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.img-placeholder::after {
  content: attr(data-label);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: rgba(200, 169, 110, 0.25);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

/* ── Hazard stripe decoration ── */
.hazard-stripe {
  background: repeating-linear-gradient(
    -45deg,
    var(--bb-hazard)    0px,
    var(--bb-hazard)    8px,
    var(--bb-void)      8px,
    var(--bb-void)      16px
  );
  opacity: 0.7;
}

/* ── Section label ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--bb-dust);
}
.section-label::before,
.section-label::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--bb-border-hi);
}

/* ═══════════════════════════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════════════════════════ */
#navbar {
  transition: background 0.35s ease, border-color 0.35s ease;
}
#navbar.scrolled {
  background: rgba(13, 11, 8, 0.96);
  border-bottom: 1px solid var(--bb-border-hi);
}

/* ═══════════════════════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════════════════════ */
.hero-bg {
  background:
    /* Warm desert horizon glow */
    radial-gradient(ellipse 100% 50% at 50% 100%, rgba(200, 120, 30, 0.12) 0%, transparent 60%),
    /* Faint hazard yellow top */
    radial-gradient(ellipse 60% 30% at 50% 0%, rgba(232, 197, 71, 0.06) 0%, transparent 50%),
    /* Base — charred earth */
    linear-gradient(180deg, #0d0b08 0%, #1a1208 40%, #111009 100%);
}

#smoke-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
}

/* ── Hero image frame — rough industrial ── */
.hero-frame {
  position: relative;
}
.hero-frame::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--bb-hazard-dk), var(--bb-rust), var(--bb-earth));
  z-index: -1;
}

/* ═══════════════════════════════════════════════════════════════
   CHARACTER CARDS
═══════════════════════════════════════════════════════════════ */
.char-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.char-card:hover {
  transform: translateY(-6px);
}
.char-card .char-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    rgba(13, 11, 8, 0.97) 0%,
    rgba(13, 11, 8, 0.5)  45%,
    transparent 100%
  );
  transition: opacity 0.3s ease;
}
.char-card:hover .char-overlay { opacity: 0.8; }

.char-card .char-accent {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.char-card:hover .char-accent { opacity: 1; }

.char-card .char-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem;
  transform: translateY(3px);
  transition: transform 0.3s ease;
}
.char-card:hover .char-info { transform: translateY(0); }

/* ── Character card border on hover ── */
.char-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  transition: border-color 0.3s ease;
  pointer-events: none;
}
.char-card:hover::after {
  border-color: var(--bb-hazard-dk);
}

/* ═══════════════════════════════════════════════════════════════
   TIMELINE
═══════════════════════════════════════════════════════════════ */
.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent,
    var(--bb-border-hi) 15%,
    var(--bb-hazard-dk) 50%,
    var(--bb-border-hi) 85%,
    transparent
  );
  transform: translateX(-50%);
}

/* ═══════════════════════════════════════════════════════════════
   SCENE GALLERY
═══════════════════════════════════════════════════════════════ */
.scene-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.scene-card img {
  transition: transform 0.5s ease, filter 0.4s ease;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.4) contrast(1.2) sepia(0.3) brightness(0.8);
}
.scene-card:hover img {
  transform: scale(1.06);
  filter: saturate(0.55) contrast(1.15) sepia(0.2) brightness(0.85);
}

.scene-card .scene-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    rgba(13, 11, 8, 0.92) 0%,
    rgba(13, 11, 8, 0.3)  50%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}
.scene-card:hover .scene-overlay { opacity: 1; }

/* ── Scene card border accent ── */
.scene-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--bb-hazard);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.scene-card:hover::after { transform: scaleX(1); }

/* ═══════════════════════════════════════════════════════════════
   DATA / FACT CARDS
═══════════════════════════════════════════════════════════════ */
.fact-card {
  transition: border-color 0.25s ease;
}
.fact-card:hover {
  border-color: var(--bb-hazard-dk);
}

/* ═══════════════════════════════════════════════════════════════
   TRIVIA FLIP CARDS
═══════════════════════════════════════════════════════════════ */
.trivia-card {
  perspective: 1000px;
  cursor: pointer;
}
.trivia-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.trivia-card.flipped .trivia-inner {
  transform: rotateY(180deg);
}
.trivia-front,
.trivia-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 0;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.trivia-back {
  transform: rotateY(180deg);
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════════════════════ */

/* Slow pulse — no neon, just opacity */
@keyframes slow-pulse {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 0.9; }
}
.slow-pulse { animation: slow-pulse 4s ease-in-out infinite; }

/* Flicker — analog light instability */
@keyframes flicker {
  0%, 92%, 100% { opacity: 1; }
  93%  { opacity: 0.6; }
  94%  { opacity: 1; }
  96%  { opacity: 0.3; }
  97%  { opacity: 1; }
}
.flicker { animation: flicker 10s infinite; }

/* Entrance animations */
@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-slide-left  { animation: slide-in-left  0.7s ease forwards; }
.animate-slide-right { animation: slide-in-right 0.7s ease forwards; }
.animate-fade-up     { animation: fade-up        0.7s ease forwards; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hazard stripe animation for loading bars */
@keyframes stripe-march {
  from { background-position: 0 0; }
  to   { background-position: 32px 0; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Trailer video player ── */
#trailer-video {
  width: 100%;
  display: block;
  background: #0d0b08;
  /* Custom controls tint via accent-color */
  accent-color: #e8c547;
}

/* Style native controls in supported browsers */
#trailer-video::-webkit-media-controls-panel {
  background: linear-gradient(0deg, rgba(13,11,8,0.95) 0%, rgba(26,18,8,0.8) 100%);
}
#trailer-video::-webkit-media-controls-play-button,
#trailer-video::-webkit-media-controls-timeline,
#trailer-video::-webkit-media-controls-volume-slider {
  filter: sepia(1) saturate(3) hue-rotate(5deg) brightness(1.2);
}

/* Hover glow on the video wrapper */
#trailer-video:hover {
  box-shadow: 0 0 40px rgba(232, 197, 71, 0.06);
}

/* Focus ring for keyboard nav */
#trailer-video:focus-visible {
  outline: 2px solid #a88a2a;
  outline-offset: 2px;
}

/* ── Custom Audio Player ── */
#bb-player {
  user-select: none;
}

/* Progress bar hover — увеличить высоту */
#bb-progress-wrap:hover {
  height: 6px;
  margin-top: -1px;
}
#bb-progress-wrap:hover #bb-thumb {
  width: 14px;
  height: 14px;
}

/* Volume bar hover */
#bb-vol-wrap:hover {
  height: 5px;
}

/* Play button focus ring */
#bb-play-btn:focus-visible {
  outline: 2px solid #a88a2a;
  outline-offset: 2px;
}

/* Smooth transitions */
#bb-progress-wrap,
#bb-vol-wrap {
  transition: height 0.15s ease;
}
#bb-thumb {
  transition: left 0.1s linear, width 0.15s ease, height 0.15s ease;
}

/* ── Scroll-to-top button ── */
#scroll-top-btn {
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s, border-color 0.2s;
}
#scroll-top-btn:focus-visible {
  outline: 2px solid #a88a2a;
  outline-offset: 2px;
}

/* ── Lightbox ── */
#lightbox {
  transition: opacity 0.2s ease;
}
#lightbox img {
  transition: opacity 0.2s ease;
}
#lb-prev:focus-visible,
#lb-next:focus-visible {
  outline: 2px solid #a88a2a;
  outline-offset: 2px;
}

/* Scene cards — show pointer and subtle zoom hint */
[data-lb-src] {
  cursor: zoom-in;
}
[data-lb-src]:focus-visible {
  outline: 2px solid #a88a2a;
  outline-offset: 2px;
}

/* Quote blockquote transition for random quote */
#quote-banner blockquote {
  transition: opacity 0.25s ease;
}