:root {
  /* Ámbar / tungsteno */
  --amber: #d98a34;
  --amber-bright: #f2ad55;
  --brass: #8c6239;

  /* Fondos, cuarto oscuro */
  --bg-primary: #0b0806;
  --bg-secondary: #14100c;
  --bg-tertiary: #1d1610;
  --bg-card: #181209;

  /* Texto */
  --text-primary: #f3e7d2;
  --text-secondary: #b6a68c;
  --text-tertiary: #7d6f5a;

  --border-color: #372b1c;
  --border-color-soft: #241b12;

  --error-color: #d1543a;
  --success-color: #7c9a5a;
  --warning-color: #e0b23d;

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
  --glow-amber: 0 0 24px rgba(217, 138, 52, 0.35);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: 'Bebas Neue', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
  transition: background var(--transition-fast);
}

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

/* Body: negativo de película con grano sutil */
body {
  font-family: var(--font-body);
  background:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(217, 138, 52, 0.07), transparent 60%),
    linear-gradient(160deg, var(--bg-primary) 0%, #0e0a07 100%);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.05;
  z-index: -1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg width='200' height='200' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cfilter id='noise'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3C/defs%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' /%3E%3C/svg%3E");
}

/* ==========================================================================
   Marquesina — fila de bombillas encima del header
   ========================================================================== */
.marquee-lights {
  height: 6px;
  width: 100%;
  background-image: radial-gradient(circle, var(--amber-bright) 0 2px, transparent 2.5px);
  background-size: 22px 6px;
  background-position: 11px 0;
  background-repeat: repeat-x;
  animation: bulbFlicker 2.4s steps(2) infinite;
  opacity: 0.85;
}

@keyframes bulbFlicker {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(0.45); }
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(20, 16, 12, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 18px 28px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--amber-bright);
  text-shadow: 0 0 18px rgba(242, 173, 85, 0.45);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  display: inline-flex;
  color: var(--bg-primary);
  background: var(--amber-bright);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--glow-amber);
}

.nav-btn {
  background: transparent;
  border: 1px solid var(--brass);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}

.nav-btn-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid currentColor;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.nav-btn:hover {
  border-color: var(--amber);
  color: var(--amber-bright);
  box-shadow: var(--glow-amber);
}

.nav-btn:active {
  transform: translateY(1px);
}

/* ==========================================================================
   Contenedor principal
   ========================================================================== */
.container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 2rem;
  gap: 2.25rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

/* ==========================================================================
   Caja de carga — carrete de película
   ========================================================================== */
.upload-box {
  background: linear-gradient(160deg, var(--bg-card), rgba(24, 18, 9, 0.7));
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 2.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.upload-box:hover {
  border-color: var(--amber);
  box-shadow: var(--glow-amber), var(--shadow-md);
  transform: translateY(-2px);
}

/* Carrete decorativo */
.reel {
  position: relative;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid var(--brass);
  margin-bottom: 0.5rem;
  transition: transform 1.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.upload-box:hover .reel {
  transform: rotate(180deg);
}

.reel-hub {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  background: var(--amber);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: var(--glow-amber);
}

.reel-spoke {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--bg-primary);
  border: 2px solid var(--brass);
  border-radius: 50%;
}

.reel-spoke:nth-child(2) { transform: translate(-50%, -50%) rotate(0deg) translate(16px) translate(-50%, -50%); }
.reel-spoke:nth-child(3) { transform: translate(-50%, -50%) rotate(120deg) translate(16px) translate(-50%, -50%); }
.reel-spoke:nth-child(4) { transform: translate(-50%, -50%) rotate(240deg) translate(16px) translate(-50%, -50%); }

.upload-label {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 1.5px;
  color: var(--bg-primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--amber-bright), var(--amber));
  border-radius: 4px;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 18px rgba(217, 138, 52, 0.35);
}

.upload-label:hover {
  transform: scale(1.04);
  box-shadow: 0 6px 24px rgba(217, 138, 52, 0.5);
}

.upload-label:active {
  transform: scale(0.98);
}

.upload-hint {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
  letter-spacing: 0.3px;
}

input[type="file"] {
  display: none;
}

/* ==========================================================================
   Información del archivo — claqueta de cine
   ========================================================================== */
.file-info {
  width: 100%;
  max-width: 640px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.slate-bar {
  background: repeating-linear-gradient(
    -45deg,
    var(--bg-primary),
    var(--bg-primary) 14px,
    var(--text-primary) 14px,
    var(--text-primary) 28px
  );
  color: var(--bg-primary);
  display: flex;
  justify-content: space-between;
  padding: 8px 16px;
}

.slate-bar span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--bg-primary);
  color: var(--amber-bright);
  padding: 3px 10px;
  border-radius: 2px;
}

.slate-body {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
}

.sprockets {
  width: 20px;
  flex-shrink: 0;
  background-image: radial-gradient(circle, var(--bg-primary) 0 4px, transparent 4.5px);
  background-size: 20px 22px;
  background-position: center;
  border-left: 1px dashed var(--border-color-soft);
  border-right: 1px dashed var(--border-color-soft);
}

.slate-content {
  flex: 1;
  padding: 1.4rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.slate-content p {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.slate-label {
  color: var(--text-tertiary);
  min-width: 90px;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 1px;
}

.slate-value {
  color: var(--amber-bright);
  font-weight: 500;
}

/* Mensaje de error */
.error-message {
  color: var(--error-color);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 14px;
  background: rgba(209, 84, 58, 0.1);
  border-left: 3px solid var(--error-color);
  border-radius: 4px;
  display: none;
  animation: shake 0.4s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* ==========================================================================
   Reproductor — pantalla de proyección con testigo de grabación
   ========================================================================== */
.player-box {
  width: 100%;
  max-width: 960px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 1rem;
  position: relative;
  background: #000;
  border: 1px solid var(--border-color);
  padding: 10px;
}

.tally {
  position: absolute;
  top: 22px;
  left: 22px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(11, 8, 6, 0.75);
  backdrop-filter: blur(4px);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

.tally-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-tertiary);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.player-box.is-loaded .tally-dot {
  background: var(--amber-bright);
  box-shadow: 0 0 8px var(--amber-bright);
  animation: tallyPulse 1.6s ease-in-out infinite;
}

@keyframes tallyPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.tally-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.player-box.is-loaded .tally-label {
  color: var(--amber-bright);
}

video {
  width: 100%;
  display: block;
  border-radius: 3px;
  background: #000;
}

.plyr {
  border-radius: 3px;
}

.plyr--video {
  background: #000;
  border-radius: 3px;
}

.plyr__control--overlaid {
  background: var(--amber) !important;
  border-radius: 50%;
  transition: all var(--transition-smooth);
}

.plyr__control--overlaid:hover {
  background: var(--amber-bright) !important;
}

.plyr__control.plyr__tab-focus,
.plyr__control:hover,
.plyr--full-ui input[type=range]::-webkit-slider-thumb {
  background: var(--amber) !important;
}

.plyr--video .plyr__control.plyr__control--overlaid {
  box-shadow: var(--glow-amber);
}

/* ==========================================================================
   Pie — tira de película
   ========================================================================== */
.filmstrip-footer {
  height: 18px;
  width: 100%;
  margin-top: auto;
  background:
    linear-gradient(var(--bg-primary), var(--bg-primary)) padding-box,
    repeating-linear-gradient(90deg, var(--bg-secondary) 0 10px, var(--bg-primary) 10px 20px);
  border-top: 1px solid var(--border-color);
  position: relative;
}

.filmstrip-footer::before,
.filmstrip-footer::after {
  content: '';
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 0;
  right: 0;
  background-image: radial-gradient(circle, var(--bg-primary) 0 3px, transparent 3.5px);
  background-size: 20px 8px;
  background-position: 10px center;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
  .navbar {
    padding: 14px 18px;
  }

  .logo {
    font-size: 1.5rem;
  }

  .nav-btn-label {
    display: none;
  }

  .container {
    padding: 1.5rem 1rem;
    gap: 1.5rem;
  }

  .upload-box {
    padding: 1.75rem 1.25rem;
  }

  .slate-content {
    padding: 1.1rem 1.25rem;
  }

  .slate-label {
    min-width: 78px;
  }

  .sprockets {
    width: 14px;
    background-size: 14px 18px;
  }

  .player-box {
    margin-top: 0.5rem;
    padding: 6px;
  }

  .tally {
    top: 14px;
    left: 14px;
  }
}

/* Foco visible accesible */
*:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

button, a, input, .clickable {
  transition: all var(--transition-fast);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}