:root {
  color-scheme: light dark;
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-surface-muted: #f1f2f5;
  --color-border: #e3e4e8;
  --color-text: #1a1b1e;
  --color-text-muted: #6b6c74;
  --color-text-faint: #9497a1;
  --color-accent: #2f5fe0;
  --color-accent-hover: #2650c2;
  --color-accent-soft: #e8edfc;
  --color-accent-contrast: #ffffff;
  --color-success: #17824f;
  --color-success-soft: #e1f5ea;
  --color-warning: #a15c00;
  --color-warning-soft: #fdf0da;
  --color-error: #c62c2c;
  --color-error-soft: #fceaea;
  --shadow-sm: 0 1px 2px rgba(20, 21, 26, 0.06);
  --shadow-md: 0 10px 30px -12px rgba(20, 21, 26, 0.22);
  --radius-sm: 7px;
  --radius: 12px;
  --radius-lg: 18px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --header-height: 60px;
}

/* Automatic (OS-driven) dark mode -- suppressed by :not([data-theme="light"])
   so an explicit "light" choice (see theme.js) always wins over it. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-bg: #16171b;
    --color-surface: #1f2024;
    --color-surface-muted: #27282d;
    --color-border: #34353b;
    --color-text: #f1f2f4;
    --color-text-muted: #9a9ba3;
    --color-text-faint: #6f707a;
    --color-accent: #7096f7;
    --color-accent-hover: #8ba7f9;
    --color-accent-soft: #202b4a;
    --color-accent-contrast: #0d1220;
    --color-success: #4bce8c;
    --color-success-soft: #163527;
    --color-warning: #e0a94a;
    --color-warning-soft: #3a2d10;
    --color-error: #ef6767;
    --color-error-soft: #3a1c1c;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  }
}

/* Explicit "dark" choice (see theme.js) -- applies regardless of OS
   preference, so it also wins when the OS is set to light. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #16171b;
  --color-surface: #1f2024;
  --color-surface-muted: #27282d;
  --color-border: #34353b;
  --color-text: #f1f2f4;
  --color-text-muted: #9a9ba3;
  --color-text-faint: #6f707a;
  --color-accent: #7096f7;
  --color-accent-hover: #8ba7f9;
  --color-accent-soft: #202b4a;
  --color-accent-contrast: #0d1220;
  --color-success: #4bce8c;
  --color-success-soft: #163527;
  --color-warning: #e0a94a;
  --color-warning-soft: #3a2d10;
  --color-error: #ef6767;
  --color-error-soft: #3a1c1c;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

/* Class selectors below (e.g. .banner { display: flex }) share the same
   specificity as the UA stylesheet's [hidden] { display: none } and come
   later in the cascade, so they'd otherwise win and silently defeat the
   hidden attribute on those same elements. */
[hidden] {
  display: none !important;
}

html {
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0 var(--space-4) var(--space-7);
  max-width: 1120px;
  margin-inline: auto;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 0.15s ease,
    color 0.15s ease;
}

@media (min-width: 900px) {
  body {
    padding: 0 var(--space-6) var(--space-7);
  }
}

a {
  color: var(--color-accent);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

/* ---------- Header ---------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-height);
  margin: 0 calc(-1 * var(--space-4)) var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .app-header {
    margin-inline: calc(-1 * var(--space-6));
    padding-inline: var(--space-6);
  }
}

.app-header .logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.app-header .logo-text {
  margin-right: auto;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.app-header .logo-text small {
  display: block;
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 1px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.3rem 0.4rem 0.3rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
}

.user-chip .user-name {
  max-width: 12ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 420px) {
  .user-chip .user-name {
    display: none;
  }
}

.icon-btn {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 999px;
  transition:
    opacity 0.15s ease,
    background-color 0.15s ease;
}

.user-chip .icon-btn {
  width: 26px;
  height: 26px;
  border: none;
  background: var(--color-surface-muted);
  color: var(--color-text-muted);
}

.icon-btn:hover:not(:disabled) {
  opacity: 0.8;
}

.icon-btn svg {
  width: 16px;
  height: 16px;
}

.lang-toggle {
  width: auto;
  padding: 0 11px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: inherit;
}

/* ---------- Page shell ---------- */

.page-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-5);
}

h1 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--color-text);
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

h2 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
}

.card-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: -0.35rem 0 0;
}

.dashboard-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (min-width: 900px) {
  .dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(300px, 1fr);
    gap: var(--space-6);
    align-items: start;
  }
}

.dashboard-main,
.dashboard-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  min-width: 0;
}

@media (min-width: 900px) {
  .dashboard-side {
    position: sticky;
    top: calc(var(--header-height) + var(--space-5));
  }
}

/* ---------- Cards ---------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

/* ---------- Permission gate ---------- */

.permission-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  text-align: left;
}

.permission-card .permission-icon {
  width: 44px;
  height: 44px;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  padding: 10px;
}

.permission-card h2 {
  font-size: 1.05rem;
}

.permission-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ---------- Camera setup / controls ---------- */

.camera-setup {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.field-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.field-row .field {
  flex: 1;
  min-width: 140px;
}

label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

select,
input {
  font-size: 1rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  width: 100%;
  transition: border-color 0.15s ease;
}

select:focus,
input:focus {
  border-color: var(--color-accent);
}

.controls {
  display: flex;
  gap: var(--space-2);
}

.controls .btn {
  flex: 1;
}

/* ---------- Buttons ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: 0.95rem;
  font-weight: 650;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: inherit;
  cursor: pointer;
  transition:
    opacity 0.15s ease,
    transform 0.05s ease,
    background-color 0.15s ease,
    border-color 0.15s ease;
}

.btn svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-muted);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

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

.btn.is-loading .btn-label,
.btn.is-loading svg:not(.spinner) {
  visibility: hidden;
}

.btn .spinner {
  display: none;
}

.btn.is-loading .spinner {
  display: block;
  position: absolute;
}

.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin 0.65s linear infinite;
}

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

/* ---------- Video ---------- */

.video-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #101114;
  box-shadow: var(--shadow-sm);
}

video {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  background: #101114;
  object-fit: cover;
  display: block;
}

#overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: #9a9ba3;
  background: #101114;
  text-align: center;
  padding: var(--space-4);
}

.video-placeholder svg {
  width: 34px;
  height: 34px;
  opacity: 0.7;
}

.video-placeholder p {
  margin: 0;
  font-size: 0.85rem;
  max-width: 30ch;
}

.video-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: rgba(10, 11, 14, 0.55);
  color: #fff;
  backdrop-filter: blur(2px);
}

.video-loading .spinner {
  display: block;
  width: 28px;
  height: 28px;
  border-width: 3px;
  color: #fff;
}

.video-loading span {
  font-size: 0.85rem;
  font-weight: 600;
}

/* ---------- Status pill ---------- */

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--color-surface-muted);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.status-pill[data-state="connected"] {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.status-pill[data-state="connected"] .status-dot {
  animation: pulse 1.6s ease-in-out infinite;
}

.status-pill[data-state="connecting"] {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.status-pill[data-state="failed"],
.status-pill[data-state="disconnected"] {
  background: var(--color-error-soft);
  color: var(--color-error);
}

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

/* ---------- People-in-frame hero ---------- */

.hero-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.hero-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.hero-number-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.hero-number {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

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

/* ---------- Stat grid ---------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.stat-tile {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3);
  background: var(--color-surface-muted);
  border-radius: var(--radius-sm);
}

.stat-tile-label {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
}

.stat-tile-value {
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

/* ---------- Demographics chips ---------- */

.chip-group-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin: var(--space-3) 0 var(--space-2);
}

.chip-group-label:first-of-type {
  margin-top: 0;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.chip b {
  font-weight: 800;
}

.chip-muted {
  background: var(--color-surface-muted);
  color: var(--color-text-muted);
}

.empty-hint {
  font-size: 0.82rem;
  color: var(--color-text-faint);
  margin: 0;
}

.unknown-note {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

/* ---------- Banners ---------- */

.banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  font-size: 0.85rem;
  line-height: 1.45;
  animation: banner-in 0.15s ease;
}

@keyframes banner-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.banner svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.banner-error {
  background: var(--color-error-soft);
  color: var(--color-error);
}

.banner-text {
  flex: 1;
  min-width: 0;
}

/* ---------- Export ---------- */

.export-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}