@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,500;0,600;1,400&display=swap');

:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #141418;
  --bg-glass: rgba(20, 20, 24, 0.75);
  --bg-glass-card: rgba(30, 30, 36, 0.6);
  --border-color: rgba(197, 168, 128, 0.15);
  --border-color-active: rgba(197, 168, 128, 0.4);

  --accent-gold: #c5a880;
  --accent-gold-hover: #dfc5a3;
  --accent-gold-glow: rgba(197, 168, 128, 0.25);

  --text-primary: #f5f5f7;
  --text-secondary: #a1a1aa;
  --text-muted: #6b6b76;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 50% 20%, rgba(197, 168, 128, 0.05) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border-radius: 3px;
  border: 1px solid var(--border-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-gold);
}

/* Typography */
h1,
h2,
h3,
.serif-font {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Navigation Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  object-fit: cover;
  transition: var(--transition-spring);
  box-shadow: 0 0 10px var(--accent-gold-glow);
}

.brand:hover .brand-logo {
  border-color: var(--accent-gold-hover);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-family: var(--font-serif);
  font-weight: 600;
}

.brand-text p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-icon:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: rgba(197, 168, 128, 0.05);
}

.btn-lang {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-lang:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem calc(110px + var(--safe-bottom));
}

/* Views Transitions */
.view {
  opacity: 0;
  transform: translateY(15px);
  display: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* --- HOME VIEW --- */
.hero {
  text-align: center;
  padding: 2.5rem 1rem 3rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

.hero h2 {
  font-size: 2.2rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero h3 {
  font-size: 1.1rem;
  color: var(--accent-gold);
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.hero p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

#exhibition-intro {
  white-space: pre-wrap;
  text-align: justify;
}

.list-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  width: 100%;
}

.search-wrapper {
  position: relative;
  flex: 1;
}

.search-input {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 25px;
  padding: 0.8rem 1rem 0.8rem 2.8rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 12px var(--accent-gold-glow);
}

.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.exhibits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

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

.exhibit-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition-spring);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 160px;
  position: relative;
  overflow: hidden;
}

.exhibit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 90%, rgba(197, 168, 128, 0.15) 100%);
  pointer-events: none;
}

.exhibit-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 10px var(--accent-gold-glow);
}

.card-num {
  font-size: 0.75rem;
  color: var(--accent-gold);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-info h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.card-info p.artist {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 0.75rem;
  margin-top: auto;
}

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.btn-qrcode-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.8rem 1.2rem;
  border-radius: 25px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.btn-qrcode-nav:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* --- WORK DETAIL VIEW --- */
.work-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Visualizer removed */

.work-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
}

.work-num {
  font-size: 0.85rem;
  color: var(--accent-gold);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.work-title-group h2 {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  line-height: 1.25;
}

.work-artist {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.work-info-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.work-body {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.work-body p {
  margin-bottom: 1.5rem;
  text-align: justify;
}

/* --- CUSTOM AUDIO PLAYER PANEL --- */
.audio-player-panel {
  position: fixed;
  bottom: calc(0.75rem + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 600px;
  /* Floating capsule player centered at bottom */
  background: rgba(20, 20, 24, 0.85);
  /* Slightly darker high-end glassmorphism */
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  /* Sleek thin border */
  border-radius: 32px;
  /* Perfect pill-shaped capsule */
  padding: 0.8rem 1.5rem;
  z-index: 200;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 15px rgba(197, 168, 128, 0.08);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.player-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Timeline/Seeker row */
.player-timeline-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.player-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 38px;
}

.player-time.current {
  text-align: right;
}

.seeker-container {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

/* Custom range inputs */
.seeker {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  touch-action: none;
}

.seeker::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-gold);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 10px rgba(197, 168, 128, 0.5);
  transition: var(--transition-spring);
}

.seeker::-webkit-slider-thumb:hover {
  transform: scale(1.3);
  background: var(--accent-gold-hover);
}

.seeker-fill {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 4px;
  background: var(--accent-gold);
  border-radius: 2px;
  pointer-events: none;
  width: 0%;
}

/* Controls row */
.player-controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0.25rem 0;
}

.player-work-info {
  width: 30%;
  overflow: hidden;
  display: none;
}

@media(min-width: 601px) {
  .player-work-info {
    display: block;
  }
}

.player-mobile-title-bar {
  display: none;
  text-align: center;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: var(--text-secondary);
}

.player-mobile-title-bar #player-mobile-title {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-weight: 600;
}

.player-mobile-title-bar #player-mobile-artist {
  color: var(--accent-gold);
}

.player-work-title {
  font-size: 0.85rem;
  font-family: var(--font-serif);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-work-artist {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.player-main-btns {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.btn-play-pause {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--text-primary);
  /* Apple Music style solid white circle */
  border: none;
  color: var(--bg-primary);
  /* Dark play icon */
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn-player-action {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.btn-player-action:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

/* Secondary controls (Speed & Volume) */
.player-sub-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  width: 30%;
}

@media(max-width: 600px) {

  /* Header shrinking */
  .brand-text h1 {
    font-size: 0.95rem;
  }

  .brand-text p {
    display: none;
  }

  header {
    padding: 0.8rem 1rem;
  }

  #nav-qrcode-text {
    display: none;
  }

  .btn-qrcode-nav {
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
  }

  /* Player Mobile Layout Symmetrical Alignment */
  .player-mobile-title-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
  }

  .player-controls-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
    padding: 0.15rem 0;
  }

  .player-work-info {
    display: none !important;
  }

  .player-sub-controls {
    display: contents;
    /* Dissolve wrapper grid cell child alignment */
  }

  .speed-control {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
  }

  .player-main-btns {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
  }

  .volume-control {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
  }

  .volume-slider-wrapper {
    display: none !important;
    /* Mobile users use side volume buttons */
  }

  .btn-play-pause {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }

  .btn-player-action {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
  }

  #mute-btn {
    font-size: 0.8rem;
    /* Extra shrink for the sound button */
  }

  .speed-menu {
    left: 0;
    right: auto;
  }
}

.speed-control {
  position: relative;
}

.btn-speed {
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
  width: 54px;
  height: 28px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.btn-speed:hover,
.btn-speed.open,
.btn-speed.active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: rgba(197, 168, 128, 0.12);
  box-shadow: 0 0 10px var(--accent-gold-glow);
}

.speed-menu {
  position: absolute;
  bottom: calc(100% + 12px);
  /* Floating iOS bubble look */
  right: 0;
  background: rgba(20, 20, 24, 0.95);
  /* Dark frosted glass */
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  /* Smooth card style */
  padding: 4px;
  display: flex;
  /* Kept display: flex so visibility classes can transition */
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 10px var(--accent-gold-glow);
  z-index: 250;
  width: 54px;
  /* MATCH THE BUTTON WIDTH EXACTLY! */

  /* Transition animation properties */
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px) scale(0.92);
  transform-origin: bottom center;
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.speed-menu.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.speed-option {
  background: none;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 6px 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border-radius: 14px;
  transition: var(--transition-smooth);
  width: 100%;
}

.speed-option:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.speed-option.active {
  background: rgba(197, 168, 128, 0.12);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  font-weight: 600;
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

#mute-btn {
  font-size: 0.9rem;
  /* Sized down slightly from 1rem */
}

.volume-slider-wrapper {
  width: 0px;
  overflow: hidden;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
}

/* Hover effect or focus to show volume slider */
.volume-control:hover .volume-slider-wrapper,
.volume-control:focus-within .volume-slider-wrapper {
  width: 60px;
}

.volume-slider {
  -webkit-appearance: none;
  width: 60px;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 1.5px;
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb:hover {
  background: var(--accent-gold);
}

/* Playback error/loading status */
.player-status-msg {
  font-size: 0.7rem;
  text-align: center;
  color: var(--accent-gold);
  margin-top: 0.1rem;
  height: 12px;
  opacity: 0;
  transition: var(--transition-smooth);
}

.player-status-msg.show {
  opacity: 1;
}

/* --- QR CODE GENERATOR VIEW --- */
.qrcode-view {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
}

.qrcode-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.qrcode-header h2 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.qrcode-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.qrcode-config-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-gold);
}

.btn-primary {
  background: var(--accent-gold);
  border: none;
  color: var(--bg-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-spring);
  text-align: center;
}

.btn-primary:hover {
  background: var(--accent-gold-hover);
  box-shadow: 0 0 12px var(--accent-gold-glow);
}

.qrcode-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media(min-width: 550px) {
  .qrcode-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.qrcode-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.qrcode-img-container {
  width: 160px;
  height: 160px;
  background: #ffffff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.qrcode-card-title {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-top: 0.5rem;
}

.qrcode-card-url {
  font-size: 0.7rem;
  color: var(--text-muted);
  word-break: break-all;
  max-width: 100%;
}

.btn-download-qr {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 15px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  width: 100%;
  text-align: center;
}

.btn-download-qr:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.qrcode-batch-print {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* Print Styling */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  header,
  main>*:not(.qrcode-view),
  .qrcode-config-panel,
  .qrcode-batch-print,
  .btn-download-qr,
  .audio-player-panel {
    display: none !important;
  }

  main {
    padding: 0 !important;
    max-width: 100% !important;
  }

  .qrcode-view {
    border: none !important;
    background: none !important;
    padding: 0 !important;
  }

  .qrcode-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 2rem !important;
    page-break-inside: avoid !important;
  }

  .qrcode-card {
    border: 1px dashed #cccccc !important;
    background: #ffffff !important;
    color: #000000 !important;
    page-break-inside: avoid !important;
  }

  .qrcode-card-title {
    color: #000000 !important;
  }

  .qrcode-card-url {
    color: #555555 !important;
  }
}