/* Edadómetro — mobile-first, alto contraste, temas claro/oscuro */

:root {
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 8px 32px rgba(15, 23, 42, 0.1);
  --transition: 0.2s ease;

  --bg: #eef1f8;
  --bg-elevated: #ffffff;
  --bg-muted: #e2e8f4;
  --text: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border: #cbd5e1;
  --border-strong: #94a3b8;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-text: #ffffff;
  --accent-soft: rgba(37, 99, 235, 0.12);
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #059669;
  --overlay: rgba(15, 23, 42, 0.55);
  --shutter-ring: rgba(255, 255, 255, 0.45);
  --meta-color: #475569;
}

[data-theme="dark"] {
  --bg: #070b14;
  --bg-elevated: #111827;
  --bg-muted: #1f2937;
  --text: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #374151;
  --border-strong: #6b7280;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --accent-text: #041018;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --danger: #f87171;
  --danger-hover: #ef4444;
  --success: #34d399;
  --overlay: rgba(0, 0, 0, 0.65);
  --shutter-ring: rgba(255, 255, 255, 0.35);
  --meta-color: #cbd5e1;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

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

html {
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.hidden { display: none !important; }

.app-shell {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) 16px env(safe-area-inset-bottom);
}

/* ── Header ── */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-logo {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.brand-logo-dark { display: none; }

[data-theme="dark"] .brand-logo-light { display: none; }
[data-theme="dark"] .brand-logo-dark { display: block; }

.brand-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-tagline {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

.brand > div {
  min-width: 0;
}

.brand-title,
.brand-tagline {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-header-action {
  white-space: nowrap;
}

/* ── Disclaimer ── */
.disclaimer {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  margin-bottom: 12px;
}

.disclaimer summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 0;
  color: var(--text-secondary);
  list-style: none;
}

.disclaimer summary::-webkit-details-marker { display: none; }

.disclaimer summary::after {
  content: "+";
  float: right;
  font-weight: 700;
  color: var(--text-muted);
}

.disclaimer[open] summary::after { content: "−"; }

.disclaimer p {
  margin: 0 0 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── Tabs ── */
.tab-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--bg-muted);
  border-radius: var(--radius-pill);
  padding: 4px;
  margin-bottom: 16px;
}

.tab {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.tab.active {
  background: var(--bg-elevated);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .tab.active {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

/* ── Panels ── */
.main-content { flex: 1; }

.panel { display: none; }
.panel.active { display: block; }

.step-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.step-view { animation: fadeIn 0.25s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Source picker (inicio) ── */
.source-picker {
  display: flex;
  justify-content: center;
  gap: 28px;
  padding: 48px 0 32px;
}

.source-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  color: var(--text);
  padding: 0;
  transition: transform var(--transition);
}

.source-btn:active { transform: scale(0.94); }

.source-icon {
  width: 80px;
  height: 80px;
  border-radius: 24px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), background var(--transition);
}

.source-icon svg {
  width: 36px;
  height: 36px;
  color: var(--accent);
}

.source-btn:hover .source-icon,
.source-btn:focus-visible .source-icon {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.source-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ── Drop zone ── */
.drop-zone {
  background: var(--bg-elevated);
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  transition: border-color var(--transition), background var(--transition);
}

.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 12px;
}

.drop-title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 1.05rem;
}

.drop-hint {
  margin: 0 0 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ── Camera ── */
#step-camera {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.camera-wrap {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  aspect-ratio: 3 / 4;
  max-height: 72dvh;
}

.camera-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.camera-stage.mirrored {
  transform: scaleX(-1);
}

#camera-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.camera-overlay {
  pointer-events: none;
  position: absolute;
  inset: 0;
}

.camera-oval {
  position: absolute;
  left: 50%;
  top: 40%;
  transform: translate(-50%, -50%);
  width: 58%;
  height: 42%;
  border: 3px solid rgba(255, 255, 255, 0.92);
  border-radius: 50%;
  box-shadow: 0 0 0 9999px var(--overlay);
}

.camera-ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.camera-zoom {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 8px;
  border-radius: 28px;
  background: rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  pointer-events: auto;
}

@media (min-width: 769px) {
  .camera-zoom { display: none !important; }
}

.zoom-btn {
  width: 32px;
  height: 28px;
  border: none;
  background: transparent;
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  opacity: 0.95;
}

.zoom-btn:active {
  opacity: 0.65;
}

.zoom-slider {
  -webkit-appearance: none;
  appearance: none;
  writing-mode: vertical-lr;
  direction: rtl;
  width: 32px;
  height: 108px;
  background: transparent;
  cursor: pointer;
  margin: 0;
}

.zoom-slider::-webkit-slider-runnable-track {
  width: 4px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 4px;
}

.zoom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
  margin-left: -8px;
}

.zoom-slider::-moz-range-track {
  width: 4px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 4px;
}

.zoom-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  border: none;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.camera-controls-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 48px 20px 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55) 0%, transparent 100%);
  pointer-events: none;
}

.camera-controls {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  pointer-events: auto;
}

.flip-camera-btn {
  display: none;
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.15s ease, transform 0.12s ease;
}

.flip-camera-btn svg {
  width: 24px;
  height: 24px;
}

.flip-camera-btn:active {
  background: rgba(255, 255, 255, 0.32);
  transform: translateY(-50%) scale(0.92);
}

@media (max-width: 768px) {
  .flip-camera-btn {
    display: flex;
  }

  .camera-wrap {
    max-width: none;
    max-height: 78dvh;
  }
}

.shutter-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 4px solid var(--shutter-ring);
  background: #ffffff;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.shutter-btn:active {
  transform: scale(0.92);
}

#step-camera .btn-back {
  margin-top: 16px;
}

/* ── Preview / result ── */
.section-title {
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--text-secondary);
}

.preview-frame {
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 14px;
}

.preview-frame img {
  width: 100%;
  display: block;
}

.preview-frame-sm {
  max-width: 220px;
  margin-left: auto;
  margin-right: auto;
}

.face-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.face-chip {
  border: 2px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.face-chip.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

[data-theme="dark"] .face-chip.active {
  color: var(--accent);
}

.result-hero {
  margin-bottom: 16px;
}

.result-image {
  width: 100%;
  max-height: 55dvh;
  object-fit: contain;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--bg-elevated);
  display: block;
}

.result-phrase {
  margin: 0 0 16px;
  padding: 16px 18px;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border-left: 4px solid var(--accent);
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
}

.result-card {
  background: var(--bg-elevated);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  box-shadow: var(--shadow);
}

.result-card strong {
  color: var(--accent);
  font-weight: 800;
  font-size: 1.25rem;
}

.result-meta {
  text-align: center;
  font-size: 0.82rem;
  color: var(--meta-color);
  margin: 12px 0 20px;
}

/* ── Buttons ── */
.btn {
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-pill);
  padding: 11px 20px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

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

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

.btn-ghost:hover {
  background: var(--bg-muted);
  border-color: var(--border-strong);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}

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

.btn-sm { font-size: 0.82rem; padding: 8px 14px; }

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
}

.btn-icon svg { width: 20px; height: 20px; }

#theme-toggle .icon-moon { display: none; }
[data-theme="dark"] #theme-toggle .icon-sun { display: none; }
[data-theme="dark"] #theme-toggle .icon-moon { display: block; }

#admin-toggle.admin-active {
  color: var(--accent);
  background: var(--accent-soft);
}

.history-mode-label {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.history-mode-label.admin-mode {
  color: var(--accent);
}

.field-label {
  display: block;
  margin: 0 0 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.field-input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
}

.field-input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.admin-hint {
  margin: 0 0 14px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.admin-error {
  margin: 0 0 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--danger);
}

.action-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 8px;
}

.btn-back {
  display: block;
  margin: 16px auto 0;
}

/* ── Status / loading ── */
.status-msg {
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--danger);
  min-height: 1.4em;
  margin: 12px 0 0;
}

.status-msg.ok { color: var(--success); }

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  color: var(--text-muted);
  font-weight: 600;
}

.spinner {
  width: 22px;
  height: 22px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ── History ── */
.history-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.history-item:hover {
  border-color: var(--border-strong);
}

.history-item.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.history-check {
  width: 22px;
  height: 22px;
  accent-color: var(--accent);
  flex-shrink: 0;
  cursor: pointer;
}

.history-thumb {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.history-body {
  flex: 1;
  min-width: 0;
}

.history-body strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.history-body span {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.history-body small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 32px 16px;
  font-size: 0.9rem;
}

/* ── Modals ── */
.modal {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  max-width: min(480px, calc(100vw - 32px));
  width: 100%;
  background: var(--bg-elevated);
  color: var(--text);
  box-shadow: var(--shadow);
}

.modal::backdrop {
  background: var(--overlay);
}

.modal-sm { max-width: 360px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.modal-body { padding: 20px; }

.modal-body .result-image { margin-bottom: 16px; }

.modal-body .action-row { margin-top: 16px; }

/* ── Footer ── */
.footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 20px 0 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.dot { opacity: 0.5; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .top-bar {
    gap: 6px;
  }

  .brand {
    flex: 1;
    gap: 8px;
  }

  .brand-logo {
    width: 32px;
    height: 32px;
  }

  .brand-title {
    font-size: 1rem;
  }

  .brand-tagline {
    display: none;
  }

  .top-actions {
    gap: 4px;
  }

  .top-actions .btn-icon {
    width: 34px;
    height: 34px;
  }

  .top-actions .btn-icon svg {
    width: 18px;
    height: 18px;
  }

  .btn-header-action {
    font-size: 0.78rem;
    padding: 7px 10px;
  }
}

@media (min-width: 480px) {
  .app-shell { padding-left: 24px; padding-right: 24px; }
  .source-icon { width: 96px; height: 96px; }
  .source-icon svg { width: 42px; height: 42px; }
}

@media (max-width: 380px) {
  .top-actions .btn-header-action {
    font-size: 0.74rem;
    padding: 6px 8px;
  }
}