@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Orbitron:wght@500;700;900&display=swap');

/* ============================================
   CDS COMMAND CENTER - LECTURETTE ASSESSMENT
   Global Styles & Design Tokens
   ============================================ */

:root {
  --bg-primary: #0d1117;
  --accent-green: #7ed321;
  --accent-green-bright: #94e33d;
  --accent-green-dim: #5fa515;
  --accent-gold: #c9a227;
  --accent-red: #e53935;
  --accent-orange: #ff9500;
  --text-primary: #ffffff;
  --text-secondary: #c9d1d9;
  --text-muted: #8b949e;
  --border-green: rgba(255, 255, 255, 0.05);
  --glow-green: rgba(126, 211, 33, 0.22);
  --glow-gold: rgba(201, 162, 39, 0.2);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
  --card-bg: rgba(22, 27, 34, 0.6);
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(126, 211, 33, 0.08), transparent 35%),
    radial-gradient(circle at 85% 30%, rgba(201, 162, 39, 0.06), transparent 35%);
}

body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--accent-green); outline-offset: 3px;
}

#site-header, #main-content, #site-footer, .fullscreen-overlay {
  position: relative; z-index: 1;
}

#site-header {
  position: relative;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex; justify-content: center; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
}

.header-logo-shell {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
}

.header-logo {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 0 8px var(--glow-green));
}

.header-logo-fallback {
  display: none; color: var(--accent-green-bright); font-family: var(--font-display); font-weight: 800;
}

.header-text { text-align: left; }

#main-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  background: linear-gradient(to right, #fff, #a1aab3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.subtitle {
  margin-top: var(--space-xs);
  font-family: var(--font-display);
  font-size: clamp(0.75rem, 2vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--accent-gold);
  text-shadow: 0 0 10px var(--glow-gold);
}

.tagline { margin-top: var(--space-md); color: var(--text-secondary); }

#main-content {
  flex: 1; width: 100%; max-width: 1120px; margin: 0 auto; padding: var(--space-xl) var(--space-lg); display: flex; flex-direction: column; gap: var(--space-xl);
}

.glass-card {
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-left: 4px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.glass-card:hover {
  transform: translateY(-4px);
  border-left: 4px solid var(--accent-green);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
  background: rgba(22, 27, 34, 0.8);
}

.section-heading {
  margin-bottom: var(--space-xl); text-align: center; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.2em; color: var(--text-primary);
}

.accent-bracket { color: var(--accent-green); }

.topic-input-group { display: flex; flex-direction: column; gap: var(--space-md); }

.topic-input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 500;
  transition: all 0.3s ease;
}
.topic-input:focus { border-color: var(--accent-green); box-shadow: 0 0 18px rgba(126, 211, 33, 0.2); outline: none; }

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  text-transform: uppercase;
  transition: all var(--transition-base);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.btn-primary {
  color: #000;
  background: linear-gradient(135deg, var(--accent-green-dim), var(--accent-green));
  box-shadow: 0 4px 15px rgba(126, 211, 33, 0.2);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(126, 211, 33, 0.4);
  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-bright));
}
.btn-secondary {
  color: var(--accent-gold);
  border: 1px solid rgba(201, 162, 39, 0.3);
  background: rgba(201, 162, 39, 0.1);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  background: rgba(201, 162, 39, 0.2);
  box-shadow: 0 4px 15px rgba(201, 162, 39, 0.2);
}
.btn-danger {
  color: #fff;
  background: linear-gradient(135deg, #e53935, #ff6b81);
  box-shadow: 0 4px 15px rgba(229, 57, 53, 0.2);
}
.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(229, 57, 53, 0.4);
}
.btn-start {
  width: 100%;
  max-width: 420px;
  padding: var(--space-lg) var(--space-2xl);
  color: #000;
  background: linear-gradient(135deg, var(--accent-green-dim), var(--accent-green));
  border: none;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  box-shadow: 0 8px 25px rgba(126, 211, 33, 0.25);
}
.btn-start:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(126, 211, 33, 0.4);
  background: linear-gradient(135deg, var(--accent-green), var(--accent-green-bright));
}
.btn-start:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.start-section { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); }
.start-hint { font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); }

.history-section { margin-top: var(--space-xl); padding-top: var(--space-lg); border-top: 1px solid rgba(255, 255, 255, 0.05); }
.history-list { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.history-list li button {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid rgba(126, 211, 33, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(126, 211, 33, 0.08);
  color: var(--accent-green);
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 500;
  transition: all 0.3s ease;
}
.history-list li button:hover {
  background: rgba(126, 211, 33, 0.2);
  color: var(--text-primary);
  border-color: var(--accent-green);
}

.recording-chamber {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-lg); width: 100%;
}

.recording-terminal {
  position: relative; width: 100%; max-width: 540px; aspect-ratio: 9 / 16; margin: 0 auto; border-radius: var(--radius-md); overflow: hidden; border: 2px solid rgba(126, 211, 33, 0.3);
}

.hud-frame {
  position: relative; width: 100%; max-width: 600px; aspect-ratio: 9 / 16; margin: 0 auto;
}

.record-canvas {
  display: block; width: 100%; height: 100%; object-fit: contain;
}

.result-section { text-align: center; }
.mission-title { font-family: var(--font-display); font-size: clamp(1.2rem, 4vw, 1.8rem); font-weight: 800; color: var(--accent-green); letter-spacing: 0.2em; margin-top: var(--space-md); }
.result-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg) var(--space-2xl);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: rgba(22, 27, 34, 0.8);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.result-item { display: flex; flex-direction: column; gap: var(--space-xs); }
.result-label { font-family: var(--font-display); font-size: 0.6rem; font-weight: 600; letter-spacing: 0.2em; color: var(--text-muted); }
.result-value { font-family: var(--font-body); font-size: 1rem; font-weight: 600; color: var(--accent-gold); }
.result-video-wrap { margin-bottom: var(--space-xl); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-green); }
.result-video { width: 100%; max-height: 480px; background: #000; display: block; }
.result-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-md); }

.fullscreen-overlay { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; background: rgba(0, 0, 0, 0.92); backdrop-filter: blur(8px); }
.countdown-content, .warning-content, .timeup-content { text-align: center; }
.countdown-number { font-family: var(--font-display); font-size: clamp(5rem, 20vw, 12rem); font-weight: 900; color: var(--accent-green); }
.warning-content h2 { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 4rem); font-weight: 900; color: var(--accent-orange); }
.timeup-content h2 { font-family: var(--font-display); font-size: clamp(2.5rem, 10vw, 5rem); font-weight: 900; color: var(--accent-gold); }

#site-footer {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: var(--space-xl);
  position: relative;
}
#site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-gold), var(--accent-green), transparent);
  opacity: 0.3;
}
#site-footer p { font-family: var(--font-body); font-size: 13px; color: var(--text-muted); letter-spacing: 0.05em; }

/* ==========================
   HOME BUTTON
   ========================== */

.home-logo-btn {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid rgba(126, 211, 33, 0.3);
  border-radius: 8px;
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  z-index: 9999;
}

.home-logo-btn img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.home-logo-btn span {
  font-family: 'Orbitron', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: #7ed321;
  letter-spacing: 1px;
}

.home-logo-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 12px rgba(126, 211, 33, 0.4);
  background: rgba(126, 211, 33, 0.1);
  border-color: #7ed321;
}

/* ============================================
   RESPONSIVE OVERRIDES FOR MOBILE & TABLET
   ============================================ */

@media (max-width: 768px) {
  #site-header {
    padding: var(--space-lg) var(--space-md);
  }
  #main-content {
    padding: var(--space-md) var(--space-md);
    gap: var(--space-lg);
  }
  .glass-card {
    padding: var(--space-lg);
  }
  .header-logo-shell {
    width: 60px;
    height: 60px;
  }
  .header-logo {
    width: 36px;
    height: 36px;
  }
  #main-title {
    font-size: clamp(1.2rem, 3.5vw, 1.8rem);
  }
  .subtitle {
    font-size: clamp(0.65rem, 1.8vw, 0.85rem);
  }
  .btn-start {
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  #site-header {
    padding: var(--space-md) var(--space-sm);
  }
  .header-inner {
    flex-direction: column;
    gap: var(--space-xs);
  }
  .header-text {
    text-align: center;
  }
  #main-content {
    padding: var(--space-sm) var(--space-sm);
    gap: var(--space-md);
  }
  .glass-card {
    padding: var(--space-md);
  }
  .result-meta {
    gap: var(--space-md);
    padding: var(--space-md);
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }
  .result-actions {
    flex-direction: column;
    width: 100%;
  }
  .result-actions .btn {
    width: 100%;
  }
  .recording-terminal {
    max-width: 100%;
    aspect-ratio: 9 / 16;
  }
}

/* ============================================================
   ACTIVE RECORDING VIEWPORT LOCK & RESPONSIVE SCALING
   ============================================================ */

body.recording-active {
  overflow: hidden !important;
  height: 100vh !important;
  width: 100vw !important;
  background-color: var(--bg-primary) !important;
}

body.recording-active html {
  overflow: hidden !important;
  height: 100vh !important;
}

/* Hide all other details, navigation, headers, footers, and chatbot when recording is active */
body.recording-active .home-logo-btn,
body.recording-active nav,
body.recording-active #site-header,
body.recording-active #site-footer,
body.recording-active .chatbot-fab,
body.recording-active .chatbot-box {
  display: none !important;
}

/* Reclaim 100% of the viewport for main content and center the elements */
body.recording-active #main-content {
  padding: var(--space-md) !important;
  margin: 0 auto !important;
  height: 100vh !important;
  max-height: 100vh !important;
  width: 100vw !important;
  max-width: 100vw !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  box-sizing: border-box !important;
  gap: var(--space-md) !important;
}

body.recording-active .recording-chamber {
  height: 100% !important;
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  box-sizing: border-box !important;
  gap: var(--space-lg) !important;
}

body.recording-active .recording-terminal {
  /* Scale dynamically to fit the viewport height perfectly while keeping a 9:16 portrait aspect ratio */
  height: calc(100vh - 120px) !important;
  max-height: calc(100vh - 120px) !important;
  width: auto !important;
  max-width: calc(100vw - 20px) !important;
  aspect-ratio: 9 / 16 !important;
  margin: 0 auto !important;
  box-sizing: border-box !important;
  border-radius: var(--radius-md) !important;
  border: 2px solid var(--accent-green) !important;
  box-shadow: 0 0 30px rgba(126, 211, 33, 0.3) !important;
}

body.recording-active #stop-btn {
  width: 100% !important;
  max-width: 320px !important;
  padding: 14px 28px !important;
  font-size: 15px !important;
  font-family: var(--font-display) !important;
  letter-spacing: 0.1em !important;
  border-radius: 12px !important;
  box-shadow: 0 5px 20px rgba(229, 57, 53, 0.45) !important;
  animation: pulse-danger 2s infinite ease-in-out !important;
}

@keyframes pulse-danger {
  0% {
    box-shadow: 0 5px 15px rgba(229, 57, 53, 0.4);
  }
  50% {
    box-shadow: 0 5px 25px rgba(229, 57, 53, 0.7);
  }
  100% {
    box-shadow: 0 5px 15px rgba(229, 57, 53, 0.4);
  }
}

/* Hide preview video safely from user while keeping it visible to Safari's engine */
.sr-only-preview {
  position: absolute !important;
  top: 0 !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0.001 !important;
  pointer-events: none !important;
}