/* Página demo — ancho completo y layout adaptable */
.face-demo-page {
  max-width: min(1320px, 100%);
  padding: 1rem 1rem 2rem;
}

.face-demo-page .topbar {
  margin-bottom: 1rem;
}

.face-demo-hero {
  margin-bottom: 1rem;
  padding: 1rem 1.15rem;
  background: var(--gradient-hero);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.face-demo-hero h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.25rem, 2.8vw, 1.85rem);
  font-weight: 800;
  line-height: 1.2;
}

.face-demo-hero .eyebrow {
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
}

.face-demo-hero p {
  margin: 0;
  color: var(--text-muted);
  font-size: clamp(0.85rem, 1.6vw, 0.98rem);
  line-height: 1.45;
  max-width: none;
}

@media (min-width: 900px) {
  .face-demo-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }

  .face-demo-hero > div:first-child {
    flex: 1;
    min-width: 0;
  }

  .face-demo-hero p {
    flex: 0 0 min(42%, 480px);
    margin: 0;
  }
}

.face-demo-layout {
  display: grid;
  gap: 1rem;
  align-items: stretch;
}

@media (min-width: 1100px) {
  .face-demo-layout {
    grid-template-columns: minmax(260px, 300px) 1fr;
  }

  .face-demo-guide {
    order: -1;
  }
}

.face-demo-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(0.85rem, 2vw, 1.15rem);
  box-shadow: var(--shadow-glow);
}

.face-demo-panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 17px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.5), rgba(34, 211, 238, 0.4));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.face-demo-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.face-demo-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  flex-shrink: 0;
}

.face-demo-status-dot.scanning {
  background: #fbbf24;
  animation: face-demo-pulse 1.2s ease-in-out infinite;
}

@keyframes face-demo-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.face-demo-label {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(0.6rem, 1.5vw, 0.7rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Cuerpo: video | controles */
.face-demo-body {
  display: grid;
  gap: 1rem;
  flex: 1;
  min-height: 0;
}

@media (min-width: 768px) {
  .face-demo-body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .face-demo-body {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 360px);
  }
}

.face-demo-video-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 0;
}

.face-demo-controls-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 0;
}

.face-demo-viewport {
  position: relative;
  width: 100%;
  flex: 1 1 auto;
  min-height: clamp(200px, 38vh, 520px);
  max-height: min(58vh, 560px);
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

@media (max-width: 767px) {
  .face-demo-viewport {
    min-height: clamp(180px, 42vw, 260px);
    max-height: 45vh;
    aspect-ratio: 3 / 4;
  }
}

@media (min-width: 768px) and (max-width: 1099px) {
  .face-demo-viewport {
    min-height: clamp(240px, 36vh, 400px);
    max-height: 50vh;
  }
}

.face-demo-grid {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image:
    linear-gradient(#333 1px, transparent 1px),
    linear-gradient(90deg, #333 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.face-demo-beam {
  position: absolute;
  left: 0;
  right: 0;
  height: 18%;
  background: linear-gradient(to bottom, transparent, rgba(34, 211, 238, 0.45), transparent);
  opacity: 0;
  pointer-events: none;
  animation: none;
}

.face-demo-beam.active {
  opacity: 0.6;
  animation: face-demo-scan 2.2s linear infinite;
}

@keyframes face-demo-scan {
  0% { top: -20%; }
  100% { top: 110%; }
}

.face-demo-video,
.face-demo-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.face-demo-canvas {
  pointer-events: none;
}

.face-demo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: clamp(0.8rem, 2vw, 0.95rem);
}

.face-demo-overlay-msg {
  position: absolute;
  left: 0.5rem;
  right: 0.5rem;
  bottom: 0.5rem;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fecaca;
}

.face-demo-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.face-demo-field label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.face-demo-row {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

@media (min-width: 480px) {
  .face-demo-row.inline {
    flex-direction: row;
    align-items: stretch;
  }

  .face-demo-row.inline .btn {
    flex-shrink: 0;
    white-space: nowrap;
  }
}

.face-demo-input {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 0.55rem 0.75rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

.face-demo-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.face-demo-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.face-demo-actions .btn,
.face-demo-btn-full {
  width: 100%;
  text-align: center;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.06);
}

.btn-ghost:disabled,
.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.face-demo-access {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: clamp(0.85rem, 2vw, 0.95rem);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  flex-shrink: 0;
}

.face-demo-access.granted {
  background: rgba(52, 211, 153, 0.2);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.face-demo-access.denied {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #fca5a5;
}

.face-demo-info {
  font-size: 0.82rem;
  color: var(--text-muted);
  min-height: 1.2rem;
  line-height: 1.4;
  margin: 0;
}

.face-demo-info.processing {
  color: var(--accent-cyan);
  font-weight: 500;
}

.face-demo-profiles-block {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.65rem;
  margin-top: 0.15rem;
}

.face-demo-profiles-title {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.face-demo-profiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 0.4rem;
  max-height: 120px;
  overflow-y: auto;
}

@media (min-width: 768px) {
  .face-demo-profiles {
    max-height: 140px;
  }
}

.face-demo-profile {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

.face-demo-profile img {
  display: block;
  width: 100%;
  height: 52px;
  object-fit: cover;
}

.face-demo-profile span {
  display: block;
  padding: 0.25rem 0.4rem;
  font-size: 0.68rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.face-demo-empty {
  padding: 0.5rem 0.65rem;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

.face-demo-footer-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: auto;
}

.face-demo-guide {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(0.85rem, 2vw, 1.15rem);
  height: fit-content;
}

.face-demo-guide h2 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.face-demo-guide ol {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.face-demo-guide li {
  margin-bottom: 0.35rem;
}

.face-demo-guide-note {
  margin: 0.75rem 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

@media (min-width: 1100px) {
  .face-demo-guide {
    padding: 1.15rem 1.25rem;
  }

  .face-demo-guide h2 {
    font-size: 1.2rem;
    margin-bottom: 0.85rem;
  }

  .face-demo-guide ol {
    font-size: 0.95rem;
    line-height: 1.55;
    padding-left: 1.35rem;
  }

  .face-demo-guide li {
    margin-bottom: 0.5rem;
  }

  .face-demo-guide-note {
    font-size: 0.9rem;
    line-height: 1.5;
  }
}

.face-demo-privacy {
  margin-top: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  background: rgba(34, 211, 238, 0.06);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.face-demo-privacy strong {
  color: var(--accent-cyan);
}

.face-demo-page .footer {
  margin-top: 1rem;
  padding-top: 1rem;
  font-size: 0.85rem;
}

.nav a.nav-demo {
  color: var(--accent-magenta);
}