/* =============================================================
   DEEPFAKE DETECTOR — Standalone stylesheet
   CSS variables mirror the main portfolio site (styles.css)
   ============================================================= */

/* ---- Variables ---- */
:root {
  --primary-color: #23aeb3;
  --secondary-color: #2e6771;
  --accent-color: #02385c;
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-muted: #666666;
  --border-color: #333333;
  --border-radius: 12px;
  --transition: all 0.3s ease;
  --navbar-height: 64px;
  /* verdict scale */
  --real-color: #2ecc71;
  --uncertain-color: #f1c40f;
  --fake-color: #e74c3c;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* Ensure the HTML `hidden` attribute always wins over explicit display rules */
[hidden] { display: none !important; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* ---- Subtle gradient background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(35, 174, 179, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(2, 56, 92, 0.07) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ---- Navbar ---- */
.recipe-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(51, 51, 51, 0.6);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-back {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.nav-back:hover { color: var(--primary-color); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: inherit;
  transition: var(--transition);
}
.lang-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* ---- Container ---- */
.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* ---- Header ---- */
.detector-header {
  padding: calc(var(--navbar-height) + 3rem) 0 2rem;
  text-align: center;
}

.detector-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.detector-header h1 .highlight {
  color: var(--primary-color);
}

.detector-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================================
   UPLOADER
   ============================================================ */
.uploader {
  margin: 0 auto;
}

.dropzone {
  position: relative;
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  background: rgba(26, 26, 26, 0.4);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.dragover {
  border-color: var(--primary-color);
  background: rgba(35, 174, 179, 0.06);
  outline: none;
}

.dropzone.has-media {
  padding: 1rem;
  cursor: default;
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
}

.dropzone-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.dropzone-text {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}

.dropzone-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.media-preview {
  width: 100%;
  display: flex;
  justify-content: center;
}

.media-preview img,
.media-preview video {
  max-width: 100%;
  max-height: 420px;
  border-radius: 8px;
  display: block;
}

.uploader-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  box-shadow: 0 4px 15px rgba(35, 174, 179, 0.15);
}

.btn-primary:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(35, 174, 179, 0.2);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* ---- Error ---- */
.error-msg {
  margin-top: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-radius: 8px;
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid rgba(231, 76, 60, 0.35);
  color: #f3a59c;
  font-size: 0.9rem;
  text-align: center;
}

/* ============================================================
   LOADING
   ============================================================ */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 0;
  color: var(--text-secondary);
}

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   RESULTS
   ============================================================ */
.results {
  margin: 2.5rem 0 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.result-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  transition: var(--transition);
}

.result-card h2,
.result-card h3 {
  font-weight: 600;
}

.result-card-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ---- Verdict ---- */
.verdict {
  text-align: center;
}

.verdict-label {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.verdict-pfake {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.verdict-pfake strong { color: var(--text-primary); }

/* ---- Score bar ---- */
.score-bar {
  position: relative;
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(90deg, var(--real-color), var(--uncertain-color), var(--fake-color));
  margin: 0.5rem 0 0.4rem;
  overflow: visible;
}

.score-bar-marker {
  position: absolute;
  top: 50%;
  width: 4px;
  height: 26px;
  background: var(--text-primary);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 2px var(--bg-secondary), 0 2px 6px rgba(0, 0, 0, 0.5);
}

.score-bar-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

/* ---- Stat grid (breakdown) ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.stat-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  text-align: center;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ---- Stacked breakdown bar ---- */
.stacked-bar {
  display: flex;
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-tertiary);
  margin-top: 0.5rem;
}

.stacked-seg { height: 100%; }
.stacked-seg.localized { background: var(--accent-color); }
.stacked-seg.synthetic { background: var(--fake-color); }
.stacked-seg.real      { background: var(--real-color); }

.stacked-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.6rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.stacked-legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.legend-dot.localized { background: var(--accent-color); }
.legend-dot.synthetic { background: var(--fake-color); }
.legend-dot.real      { background: var(--real-color); }

/* ---- Generators ---- */
.gen-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.gen-row {
  display: grid;
  grid-template-columns: 130px 1fr 48px;
  align-items: center;
  gap: 0.75rem;
}

.gen-name {
  font-size: 0.9rem;
  color: var(--text-primary);
  text-transform: capitalize;
}

.gen-track {
  height: 8px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  overflow: hidden;
}

.gen-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 4px;
}

.gen-pct {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: right;
}

/* ---- Mask overlay ---- */
.mask-overlay-wrap {
  position: relative;
  display: inline-block;
  max-width: 100%;
  line-height: 0;
  border-radius: 8px;
  overflow: hidden;
}

.mask-overlay-wrap img.base-media,
.mask-overlay-wrap video.base-media {
  display: block;
  max-width: 100%;
  max-height: 460px;
}

.mask-overlay-wrap img.mask-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
  /* recolor the white-on-black mask toward a hot red/orange */
  filter: drop-shadow(0 0 0 transparent);
}

.mask-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.mask-controls label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.mask-controls input[type="range"] { accent-color: var(--primary-color); }

.mask-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

/* ============================================================
   VIDEO TIMELINE
   ============================================================ */
.timeline-block { margin-top: 0.5rem; }

.timeline-track {
  position: relative;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  cursor: pointer;
}

.timeline-gradient {
  position: absolute;
  inset: 0;
}

.timeline-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(255, 255, 255, 0.55);
  transform: translateX(-50%);
  transition: background 0.2s ease, width 0.2s ease;
}

.timeline-marker:hover,
.timeline-marker.active {
  background: #fff;
  width: 3px;
}

.timeline-marker.peak {
  background: var(--fake-color);
  width: 3px;
}

.timeline-axis {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.timeline-legend {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.timeline-legend .bar {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--real-color), var(--uncertain-color), var(--fake-color));
  max-width: 220px;
}

.frame-detail {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: minmax(0, 320px) 1fr;
  gap: 1.5rem;
  align-items: start;
}

.frame-detail .frame-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.frame-detail .frame-meta .big {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   Footer
   ============================================================ */
.detector-page-footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  position: relative;
  z-index: 1;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .detector-header h1 { font-size: 1.9rem; }
  .gen-row { grid-template-columns: 96px 1fr 42px; }
  .frame-detail { grid-template-columns: 1fr; }
  .nav-container { padding: 0 1rem; }
  .container { padding: 0 1rem; }
}

/* =========================================
   THEME TOGGLE BUTTON
   ========================================= */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* =========================================
   LIGHT MODE OVERRIDES
   ========================================= */
body.light-mode {
  --primary-color: #9b1b30;
  --secondary-color: #7a1428;
  --accent-color: #c2185b;
  --bg-primary: #FAF7F2;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F0EBE3;
  --text-primary: #1A1A1A;
  --text-secondary: #4A4A4A;
  --text-muted: #717171;
  --border-color: #E0D8CC;
  background-color: transparent;
}

html:has(body.light-mode) {
  background-color: #FAF7F2;
}

/* Subtle gradient background in light mode */
body.light-mode::before {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(155, 27, 48, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(194, 24, 91, 0.04) 0%, transparent 50%);
}

/* Gradient blob container and elements */
#light-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.light-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 1;
  pointer-events: none;
  will-change: transform;
}

.light-blob-1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(155, 27, 48, 0.5), transparent 70%);
  top: -10%;
  left: -10%;
  animation: blobFloat1 18s ease-in-out infinite;
}

.light-blob-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(194, 24, 91, 0.35), transparent 70%);
  top: 40%;
  right: -12%;
  animation: blobFloat2 22s ease-in-out infinite;
}

.light-blob-3 {
  width: 750px;
  height: 750px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.3), transparent 70%);
  bottom: -15%;
  left: 25%;
  animation: blobFloat3 20s ease-in-out infinite;
}

@keyframes blobFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(80px, 60px) scale(1.1); }
  66% { transform: translate(-40px, 100px) scale(0.95); }
}

@keyframes blobFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-60px, -80px) scale(1.05); }
  66% { transform: translate(50px, -40px) scale(0.9); }
}

@keyframes blobFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -50px) scale(1.15); }
  66% { transform: translate(-80px, 30px) scale(0.95); }
}

/* Navbar in light mode */
body.light-mode .recipe-nav {
  background: rgba(250, 247, 242, 0.92);
  border-bottom-color: var(--border-color);
}

body.light-mode .nav-brand {
  color: var(--primary-color);
}

/* Highlight */
body.light-mode .highlight {
  color: var(--primary-color);
}

/* Dropzone */
body.light-mode .dropzone {
  background: rgba(255, 255, 255, 0.6);
  border-color: var(--border-color);
}

body.light-mode .dropzone:hover,
body.light-mode .dropzone.dragover {
  border-color: var(--primary-color);
  background: rgba(155, 27, 48, 0.05);
}

/* Cards in light mode */
body.light-mode .result-card {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .stat-item {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

body.light-mode .gen-track,
body.light-mode .stacked-bar,
body.light-mode .timeline-track {
  background: var(--bg-tertiary);
}

/* Footer */
body.light-mode .detector-page-footer {
  border-top-color: var(--border-color);
  color: var(--text-muted);
}

/* Buttons */
body.light-mode .btn-secondary {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

body.light-mode .btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Toggle buttons in light mode */
body.light-mode .theme-toggle,
body.light-mode .lang-toggle {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

body.light-mode .theme-toggle:hover,
body.light-mode .lang-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}