/* ============================================================
   DASH AUDIENCES — Design System v2 (Light Theme)
   Radio Nova · Manrope / JetBrains Mono · Navy & Gold
   ============================================================ */


/* ==========================================================
   1. FONT IMPORTS
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');


/* ==========================================================
   2. CSS VARIABLES — Semantic Design Tokens
   ========================================================== */

:root {
  /* Base palette HSL components */
  --navy-h: 213; --navy-s: 57%; --navy-l: 27%;
  --gold-h: 37;  --gold-s: 43%; --gold-l: 49%;

  /* Backgrounds */
  --bg-base: hsl(216, 28%, 97%);
  --bg-surface: hsl(0, 0%, 100%);
  --bg-elevated: hsl(0, 0%, 100%);
  --bg-hover: hsl(213, 30%, 97%);
  --bg-subtle: hsl(213, 25%, 95%);

  /* Text — all pass WCAG AA (>= 4.5:1) on white */
  --text-primary: hsl(213, 50%, 16%);
  --text-secondary: hsl(213, 12%, 44%);
  --text-muted: hsl(213, 14%, 48%);

  /* Accents */
  --accent-primary: hsl(213, 57%, 27%);
  --accent-primary-hover: hsl(213, 52%, 37%);
  --accent-secondary: hsl(37, 43%, 49%);
  --accent-success: hsl(142, 72%, 37%);
  --accent-danger: hsl(0, 72%, 51%);
  --accent-info: hsl(189, 86%, 37%);

  /* Borders */
  --border-default: hsl(213, 18%, 90%);
  --border-subtle: hsl(213, 18%, 93%);
  --border-strong: hsl(213, 18%, 84%);

  /* Spacing scale (4px base) */
  --space-1: 4px; --space-2: 8px; --space-3: 12px;
  --space-4: 16px; --space-5: 20px; --space-6: 24px;
  --space-8: 32px; --space-10: 40px; --space-12: 48px;

  /* Typography */
  --font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --text-xs: 11px; --text-sm: 13px; --text-base: 15px;
  --text-lg: 17px; --text-xl: 20px; --text-2xl: 24px;
  --text-hero: 56px;

  /* Radius */
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px;
  --radius-xl: 20px; --radius-full: 9999px;

  /* Shadows (5 levels) */
  --shadow-xs: 0 1px 2px hsla(213, 50%, 16%, 0.04);
  --shadow-sm: 0 1px 3px hsla(213, 50%, 16%, 0.06), 0 1px 2px hsla(213, 50%, 16%, 0.04);
  --shadow-md: 0 4px 6px hsla(213, 50%, 16%, 0.06), 0 2px 4px hsla(213, 50%, 16%, 0.04);
  --shadow-lg: 0 10px 15px hsla(213, 50%, 16%, 0.06), 0 4px 6px hsla(213, 50%, 16%, 0.04);
  --shadow-xl: 0 20px 25px hsla(213, 50%, 16%, 0.08), 0 10px 10px hsla(213, 50%, 16%, 0.04);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}


/* ==========================================================
   3. RESET & BASE
   ========================================================== */

body {
  font-family: var(--font-family);
  background: var(--bg-base);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

::selection {
  background: hsl(var(--navy-h), var(--navy-s), var(--navy-l));
  color: hsl(0, 0%, 100%);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: hsla(213, 50%, 16%, 0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: hsla(213, 50%, 16%, 0.2); }


/* ==========================================================
   4. LAYOUT SHELL
   ========================================================== */

.app-container {
  padding-left: 0;
  padding-right: 0;
}

.app-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 var(--space-6);
  height: 48px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-xs);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.header-logo {
  height: 22px;
  width: auto;
  vertical-align: middle;
}

.header-brand .brand-suffix {
  font-weight: 400;
}

.header-subtitle {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.header-date {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.app-body {
  display: flex;
}

.app-sidebar {
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  width: 200px;
  min-height: calc(100vh - 48px);
  padding: var(--space-4) var(--space-2);
}

.sidebar-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0 14px;
  margin-bottom: var(--space-2);
}

.sidebar-nav {
  /* Nav pills container */
}

.sidebar-separator {
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-5) 14px;
}

.sidebar-wave-block {
  padding: 0 14px;
}

.sidebar-wave-name {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent-secondary);
  letter-spacing: -0.02em;
}

.sidebar-wave-date {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.sidebar-wave-results {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.app-content {
  flex-grow: 1;
  padding: var(--space-8);
}

.app-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3) var(--space-6);
  text-align: center;
}

.app-footer small {
  color: var(--text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
}


/* ==========================================================
   5. NAVIGATION
   ========================================================== */

.nav-pills .nav-link {
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-base);
  border-left: 2px solid transparent;
  margin-bottom: 2px;
}

.nav-pills .nav-link:hover {
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.04);
  color: var(--text-primary);
}

.nav-pills .nav-link.active {
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.08);
  color: var(--accent-primary);
  border-left-color: var(--accent-primary);
  font-weight: 600;
}

.nav-pills .nav-link i {
  width: 20px;
  text-align: center;
  font-size: 14px;
}

/* Model tabs — pill style, single row */
.model-tabs .nav-tabs {
  border-bottom: none;
  gap: var(--space-2);
  flex-wrap: nowrap;
}

.model-tabs .nav-tabs .nav-link {
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.model-tabs .nav-tabs .nav-link:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.model-tabs .nav-tabs .nav-link.active {
  color: hsl(0, 0%, 100%);
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  font-weight: 600;
}

/* Consensus tab — distinct gold accent */
.model-tabs .nav-tabs .consensus-tab .nav-link {
  border-color: hsla(37, 43%, 49%, 0.3);
}

.model-tabs .nav-tabs .consensus-tab .nav-link.active {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  color: hsl(0, 0%, 100%);
}


/* ==========================================================
   6. CARDS
   ========================================================== */

.app-container .card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
  overflow: hidden;
}

.app-container .card:hover {
  box-shadow: var(--shadow-md);
}

.app-container .card-header {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--space-3) var(--space-5);
}

.app-container .card-header h5 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0;
}

.app-container .card-body {
  padding: var(--space-5);
}


/* ==========================================================
   7. SECTION TITLES
   ========================================================== */

.section-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}


/* ==========================================================
   8. BADGES (unified BEM + backward-compat aliases)
   ========================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

/* -- Stable (green) */
.badge--stable,
.badge-stable {
  background: hsla(142, 72%, 37%, 0.08);
  color: var(--accent-success);
  border: 1px solid hsla(142, 72%, 37%, 0.2);
}

/* -- Unstable (red) */
.badge--unstable,
.badge-unstable {
  background: hsla(0, 72%, 51%, 0.08);
  color: var(--accent-danger);
  border: 1px solid hsla(0, 72%, 51%, 0.2);
}

/* -- Best (navy) */
.badge--best,
.badge-best {
  background: hsla(213, 57%, 27%, 0.08);
  color: var(--accent-primary);
  border: 1px solid hsla(213, 57%, 27%, 0.2);
}

/* -- Gold */
.badge--gold,
.badge-gold {
  background: hsla(37, 43%, 49%, 0.08);
  color: var(--accent-secondary);
  border: 1px solid hsla(37, 43%, 49%, 0.2);
}


/* ==========================================================
   9. FEATURE PILLS
   ========================================================== */

.feature-pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.06);
  color: var(--accent-primary);
  border: 1px solid hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.12);
  margin: 3px var(--space-1) 3px 0;
  font-family: var(--font-family);
}


/* ==========================================================
   10. BUTTONS
   ========================================================== */

.app-container .btn-primary {
  background: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  color: hsl(0, 0%, 100%);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.2);
  letter-spacing: 0.01em;
}

.app-container .btn-primary:hover:not(:disabled) {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.app-container .btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.app-container .btn-secondary {
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.app-container .btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* Focus ring — keyboard only (buttons, nav, accordions, cards) */
.app-container .btn:focus-visible,
.app-container .nav-link:focus-visible,
.app-container .accordion-button:focus-visible,
.app-container .card:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  box-shadow: none;
}

.segment-control .form-check-input:focus-visible + .form-check-label {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.source-toggles .form-check-input:focus-visible + .form-check-label {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}


/* ==========================================================
   11. FORM CONTROLS
   ========================================================== */

.app-container .form-control,
.app-container .form-select,
.app-container input[type="number"],
.app-container .Select-control,
.app-container .Select-menu-outer,
.app-container .dash-dropdown .Select-control {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-family: var(--font-family);
  transition: border-color var(--transition-base);
}

/* Ensure dropdown controls match 38px control height */
.control-group .dash-dropdown {
  height: 38px;
}

.app-container .dash-dropdown .Select-control {
  height: 38px;
}

.app-container .dash-dropdown .Select-value,
.app-container .dash-dropdown .Select-placeholder {
  line-height: 36px;
}

.app-container .dash-dropdown .Select-input {
  height: 36px;
}

.app-container .dash-dropdown .Select-input > input {
  line-height: 36px;
}

.app-container .form-control:focus,
.app-container input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.1);
  outline: none;
}

/* Dash dropdown specifics */
.app-container .dash-dropdown .Select-value-label {
  color: var(--text-primary);
}

.app-container .dash-dropdown .Select-menu-outer {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  box-shadow: var(--shadow-lg);
}

.app-container .dash-dropdown .VirtualizedSelectOption {
  background: transparent;
  color: var(--text-primary);
}

.app-container .dash-dropdown .VirtualizedSelectFocusedOption {
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.06);
}

.app-container .dash-dropdown .Select-placeholder {
  color: var(--text-muted);
}

.app-container .dash-dropdown .Select-arrow-zone {
  color: var(--text-muted);
}

/* Generic form check inputs */
.app-container .form-check-input {
  background-color: var(--bg-surface);
  border-color: var(--border-strong);
}

.app-container .form-check-input:checked {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.app-container .form-check-label {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
}


/* ==========================================================
   12. SEGMENT CONTROLS
   ========================================================== */

/* segment-control: layout handled by .control-group (column),
   inner form-check items handle 38px height themselves */

.segment-control .form-check.form-check-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-default);
  padding: 0 18px;
  height: 38px;
  margin: 0;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--bg-surface);
}

.segment-control .form-check.form-check-inline:first-of-type {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.segment-control .form-check.form-check-inline:last-of-type {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  border-left: none;
}

.segment-control .form-check.form-check-inline:has(input:checked) {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.segment-control .form-check.form-check-inline:has(input:checked) .form-check-label {
  color: hsl(0, 0%, 100%);
}

/* Visually hidden but accessible to keyboard & screen readers */
.segment-control .form-check-input {
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}


/* ==========================================================
   12b. SOURCE SELECTOR (prediction source picker)
   ========================================================== */

/* Source section title — matches card-header h5 style */
.source-section-title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

/* Source group layout */
.source-group-label {
  font-family: var(--font-family);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.source-selector {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
}

.source-btn {
  display: inline-flex;
  align-items: center;
  padding: 3px 6px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.source-btn .fas {
  font-size: 9px;
}
.source-btn .fas.me-1 {
  margin-right: 3px !important;
}
.source-btn .fas.ms-1 {
  margin-left: 2px !important;
}

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

/* Streaming — navy accent */
.source-btn--streaming {
  border-color: hsla(213, 57%, 27%, 0.25);
}
.source-btn--streaming:hover {
  border-color: hsla(213, 57%, 27%, 0.5);
  background: hsla(213, 57%, 27%, 0.04);
}
.source-btn--streaming.source-btn--active {
  background: hsl(213, 57%, 27%);
  border-color: hsl(213, 57%, 27%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(213, 57%, 27%, 0.25);
}

/* Podcasts — gold accent */
.source-btn--podcasts {
  border-color: hsla(37, 43%, 49%, 0.25);
}
.source-btn--podcasts:hover {
  border-color: hsla(37, 43%, 49%, 0.5);
  background: hsla(37, 43%, 49%, 0.04);
}
.source-btn--podcasts.source-btn--active {
  background: hsl(37, 43%, 49%);
  border-color: hsl(37, 43%, 49%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(37, 43%, 49%, 0.25);
}

/* Both — teal accent */
.source-btn--stream_pod {
  border-color: hsla(189, 86%, 37%, 0.25);
}
.source-btn--stream_pod:hover {
  border-color: hsla(189, 86%, 37%, 0.5);
  background: hsla(189, 86%, 37%, 0.04);
}
.source-btn--stream_pod.source-btn--active {
  background: hsl(189, 86%, 37%);
  border-color: hsl(189, 86%, 37%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(189, 86%, 37%, 0.25);
}
.source-btn--stream_yt {
  border-color: hsla(15, 75%, 50%, 0.25);
}
.source-btn--stream_yt:hover {
  border-color: hsla(15, 75%, 50%, 0.5);
  background: hsla(15, 75%, 50%, 0.04);
}
.source-btn--stream_yt.source-btn--active {
  background: hsl(15, 75%, 50%);
  border-color: hsl(15, 75%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(15, 75%, 50%, 0.25);
}
.source-btn--pod_yt {
  border-color: hsla(330, 55%, 50%, 0.25);
}
.source-btn--pod_yt:hover {
  border-color: hsla(330, 55%, 50%, 0.5);
  background: hsla(330, 55%, 50%, 0.04);
}
.source-btn--pod_yt.source-btn--active {
  background: hsl(330, 55%, 50%);
  border-color: hsl(330, 55%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(330, 55%, 50%, 0.25);
}
.source-btn--youtube {
  border-color: hsla(0, 70%, 50%, 0.25);
}
.source-btn--youtube:hover {
  border-color: hsla(0, 70%, 50%, 0.5);
  background: hsla(0, 70%, 50%, 0.04);
}
.source-btn--youtube.source-btn--active {
  background: hsl(0, 70%, 50%);
  border-color: hsl(0, 70%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(0, 70%, 50%, 0.25);
}
.source-btn--all {
  border-color: hsla(260, 50%, 50%, 0.25);
}
.source-btn--all:hover {
  border-color: hsla(260, 50%, 50%, 0.5);
  background: hsla(260, 50%, 50%, 0.04);
}
.source-btn--all.source-btn--active {
  background: hsl(260, 50%, 50%);
  border-color: hsl(260, 50%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(260, 50%, 50%, 0.25);
}

/* L-D variants — same colors as their L-V counterparts */
.source-btn--streaming_ld {
  border-color: hsla(213, 57%, 27%, 0.25);
}
.source-btn--streaming_ld:hover {
  border-color: hsla(213, 57%, 27%, 0.5);
  background: hsla(213, 57%, 27%, 0.04);
}
.source-btn--streaming_ld.source-btn--active {
  background: hsl(213, 57%, 27%);
  border-color: hsl(213, 57%, 27%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(213, 57%, 27%, 0.25);
}
.source-btn--podcasts_ld {
  border-color: hsla(37, 43%, 49%, 0.25);
}
.source-btn--podcasts_ld:hover {
  border-color: hsla(37, 43%, 49%, 0.5);
  background: hsla(37, 43%, 49%, 0.04);
}
.source-btn--podcasts_ld.source-btn--active {
  background: hsl(37, 43%, 49%);
  border-color: hsl(37, 43%, 49%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(37, 43%, 49%, 0.25);
}
.source-btn--youtube_ld {
  border-color: hsla(0, 70%, 50%, 0.25);
}
.source-btn--youtube_ld:hover {
  border-color: hsla(0, 70%, 50%, 0.5);
  background: hsla(0, 70%, 50%, 0.04);
}
.source-btn--youtube_ld.source-btn--active {
  background: hsl(0, 70%, 50%);
  border-color: hsl(0, 70%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(0, 70%, 50%, 0.25);
}
.source-btn--stream_pod_ld {
  border-color: hsla(189, 86%, 37%, 0.25);
}
.source-btn--stream_pod_ld:hover {
  border-color: hsla(189, 86%, 37%, 0.5);
  background: hsla(189, 86%, 37%, 0.04);
}
.source-btn--stream_pod_ld.source-btn--active {
  background: hsl(189, 86%, 37%);
  border-color: hsl(189, 86%, 37%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(189, 86%, 37%, 0.25);
}
.source-btn--stream_yt_ld {
  border-color: hsla(15, 75%, 50%, 0.25);
}
.source-btn--stream_yt_ld:hover {
  border-color: hsla(15, 75%, 50%, 0.5);
  background: hsla(15, 75%, 50%, 0.04);
}
.source-btn--stream_yt_ld.source-btn--active {
  background: hsl(15, 75%, 50%);
  border-color: hsl(15, 75%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(15, 75%, 50%, 0.25);
}
.source-btn--pod_yt_ld {
  border-color: hsla(330, 55%, 50%, 0.25);
}
.source-btn--pod_yt_ld:hover {
  border-color: hsla(330, 55%, 50%, 0.5);
  background: hsla(330, 55%, 50%, 0.04);
}
.source-btn--pod_yt_ld.source-btn--active {
  background: hsl(330, 55%, 50%);
  border-color: hsl(330, 55%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(330, 55%, 50%, 0.25);
}
.source-btn--all_ld {
  border-color: hsla(260, 50%, 50%, 0.25);
}
.source-btn--all_ld:hover {
  border-color: hsla(260, 50%, 50%, 0.5);
  background: hsla(260, 50%, 50%, 0.04);
}
.source-btn--all_ld.source-btn--active {
  background: hsl(260, 50%, 50%);
  border-color: hsl(260, 50%, 50%);
  color: hsl(0, 0%, 100%);
  box-shadow: 0 2px 8px hsla(260, 50%, 50%, 0.25);
}

/* Info icon inside buttons */
.source-info-icon {
  font-size: 8px;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}
.source-btn:hover .source-info-icon {
  opacity: 0.8;
}
.source-btn--active .source-info-icon {
  color: rgba(255, 255, 255, 0.7);
  opacity: 0.8;
}

/* Period badge on source buttons */
.source-btn-badge {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.3px;
  padding: 1px 3px;
  margin-left: 4px;
  border-radius: 3px;
  background: hsla(213, 57%, 27%, 0.1);
  color: hsl(213, 57%, 37%);
  vertical-align: middle;
}
.source-btn--active .source-btn-badge {
  background: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.9);
}


/* ==========================================================
   12b. MODEL DROPDOWN
   ========================================================== */

.model-dropdown {
  min-width: 280px;
  max-width: 400px;
  font-size: 13px;
}

/* ==========================================================
   13. SOURCE TOGGLES
   ========================================================== */

.source-toggles .form-check.form-check-inline {
  padding: 0 14px;
  height: 38px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  margin: 0 var(--space-2) 0 0;
  background: var(--bg-surface);
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
}

.source-toggles .form-check.form-check-inline:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.source-toggles .form-check.form-check-inline:has(input:checked) {
  border-color: var(--accent-primary);
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.08);
}

.source-toggles .form-check.form-check-inline:has(input:checked) .form-check-label {
  color: var(--accent-primary);
  font-weight: 600;
}

.source-toggles .form-check.form-check-inline:has(input:disabled) {
  opacity: 0.4;
  cursor: default;
}

.source-toggles .form-check.form-check-inline:has(input:disabled):hover {
  border-color: var(--border-default);
  background: var(--bg-surface);
}

/* Visually hidden but accessible to keyboard & screen readers */
.source-toggles .form-check-input {
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}


/* ==========================================================
   14. DATATABLE
   ========================================================== */

.app-container .dash-table-container .dash-spreadsheet-container {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.app-container .dash-table-container .dash-spreadsheet {
  border: none;
}

.app-container .dash-table-container th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-default);
  border-right: none;
}

.app-container .dash-table-container td {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  padding: 10px var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  border-right: none;
  transition: background-color var(--transition-fast);
}

.app-container .dash-table-container td.cell--selected {
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.06);
  border-left: 2px solid var(--accent-primary);
}

.app-container .dash-table-container td:hover {
  background: var(--bg-hover);
}

.app-container .dash-table-container td input {
  background: transparent;
  color: var(--text-primary);
  border: none;
}

/* Row delete button */
.app-container .dash-cell.column-0 {
  color: var(--text-muted);
}


/* ==========================================================
   15. PLOTLY CHARTS — Modebar
   ========================================================== */

.js-plotly-plot .plotly .modebar {
  right: var(--space-2);
  top: var(--space-2);
}

.js-plotly-plot .plotly .modebar-btn {
  color: var(--text-muted);
}

.js-plotly-plot .plotly .modebar-btn:hover {
  color: var(--text-primary);
}


/* ==========================================================
   16. CONTROL PANEL
   ========================================================== */

.control-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-xs);
}

.control-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-5);
  flex-wrap: wrap;
}

/* Every control group uses a consistent 2-row structure:
   Row 1 = label (fixed height), Row 2 = control (fixed 38px height) */
.control-group {
  display: flex;
  flex-direction: column;
}

.control-group label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  line-height: 1;
}

/* Action row: button below controls, separated by subtle border */
.control-action {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

/* Primary button inside control panel — match 38px height */
.control-panel .btn-primary {
  height: 38px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.dropdown-medium {
  width: 200px;
  min-width: 160px;
}


/* ==========================================================
   17. PREDICTION HERO
   ========================================================== */

.prediction-hero {
  text-align: center;
  padding: var(--space-5) var(--space-6) var(--space-4);
  background: linear-gradient(
    135deg,
    hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.03),
    hsla(var(--gold-h), var(--gold-s), var(--gold-l), 0.03)
  );
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.prediction-hero .hero-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-3);
}

.prediction-hero .big-number {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--accent-primary);
  line-height: 1;
}

.prediction-hero .hero-unit {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-top: var(--space-2);
  font-weight: 500;
}

.prediction-hero .ci-range {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-top: var(--space-2);
  font-weight: 500;
}

.prediction-hero .hero-deltas {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.prediction-hero .hero-delta {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.prediction-hero .hero-delta--up {
  background: hsla(142, 72%, 37%, 0.08);
  color: var(--accent-success);
  border: 1px solid hsla(142, 72%, 37%, 0.2);
}

.prediction-hero .hero-delta--down {
  background: hsla(0, 72%, 51%, 0.08);
  color: var(--accent-danger);
  border: 1px solid hsla(0, 72%, 51%, 0.2);
}

.prediction-hero .hero-delta--neutral {
  background: hsla(213, 30%, 50%, 0.08);
  color: var(--text-secondary);
  border: 1px solid hsla(213, 18%, 50%, 0.2);
}

/* YoY sub-tabs (inside card body, dcc.Tabs) */
.yoy-tabs .tab {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  padding: var(--space-2) var(--space-4);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-base);
}

.yoy-tabs .tab:hover {
  color: var(--text-primary);
  border-bottom-color: var(--border-default);
}

.yoy-tabs .tab--selected {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 600;
}


/* ==========================================================
   18. EMPTY STATES
   ========================================================== */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
}

.empty-state__icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
  opacity: 0.4;
}

.empty-state__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.empty-state__description {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 400px;
  margin: 0 auto;
}


/* ==========================================================
   19. SKELETON LOADING
   ========================================================== */

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

.skeleton-card {
  height: 120px;
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-hover) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-md);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}


/* ==========================================================
   20. ACCORDION
   ========================================================== */

.app-container .accordion-button {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 14px var(--space-5);
  box-shadow: none;
}

.app-container .accordion-button:not(.collapsed) {
  color: var(--accent-primary);
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.04);
}

.app-container .accordion-button::after {
  opacity: 0.5;
}

.app-container .accordion-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-2);
}


/* ==========================================================
   21. ALERTS
   ========================================================== */

.app-container .alert-warning {
  background: hsla(38, 92%, 50%, 0.06);
  border: 1px solid hsla(38, 92%, 50%, 0.15);
  color: hsl(26, 78%, 30%);
  border-radius: var(--radius-sm);
}

.app-container .alert-danger {
  background: hsla(0, 72%, 51%, 0.06);
  border: 1px solid hsla(0, 72%, 51%, 0.15);
  color: hsl(0, 73%, 35%);
  border-radius: var(--radius-sm);
}


/* ==========================================================
   22. PAGE TRANSITION & REDUCED MOTION
   ========================================================== */

.container-fluid {
  animation: fadeIn 300ms ease-out;
}

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

@media (prefers-reduced-motion: reduce) {
  .container-fluid { animation: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}


/* ==========================================================
   23. NATIVE HTML TABLES
   ========================================================== */

.app-container .card-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.app-container .card-body table thead th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-default);
  text-align: center;
  white-space: nowrap;
}

.app-container .card-body table thead th:first-child {
  text-align: left;
}

.app-container .card-body table tbody td {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  padding: 10px var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
  transition: background-color var(--transition-fast);
}

.app-container .card-body table tbody td:first-child {
  text-align: left;
}

.app-container .card-body table tbody tr:hover td {
  background: var(--bg-hover);
}

.app-container .card-body table tbody tr:last-child td {
  border-bottom: none;
}


/* ==========================================================
   24. UTILITY CLASSES
   ========================================================== */

.text-secondary {
  color: var(--text-secondary);
}

.text-bold {
  font-weight: 600;
}

.card-header-with-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.card-header-with-control h5 {
  margin: 0;
}


/* ==========================================================
   25. LOADING SPINNER
   ========================================================== */

.app-container .dash-spinner.dash-spinner--circle {
  border-color: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.15);
  border-top-color: var(--accent-primary);
}


/* ==========================================================
   26. RESPONSIVE
   ========================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .app-sidebar { width: 160px; }
  .app-content { padding: var(--space-5); }
  .control-row { gap: var(--space-4); }
  .dropdown-medium { width: 180px; }
}

/* Mobile */
@media (max-width: 768px) {
  .app-sidebar { display: none; }
  .prediction-hero .big-number { font-size: 36px; }
  .app-container .card-body table { font-size: var(--text-xs); }
  .app-container .card-body table thead th,
  .app-container .card-body table tbody td { padding: var(--space-2) 10px; }
}

/* Wide desktop — cap content width */
@media (min-width: 1600px) {
  .app-content { max-width: 1400px; }
}


/* ==========================================================
   27. SUMMARY CARDS
   ========================================================== */

.summary-cards-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
  transition: all var(--transition-base);
  cursor: default;
  box-shadow: var(--shadow-xs);
}

.summary-card:hover {
  box-shadow: var(--shadow-sm);
}

.summary-card--selected {
  border-color: var(--accent-primary);
  background: hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.03);
  box-shadow: 0 0 0 1px var(--accent-primary), var(--shadow-sm);
}

.summary-card-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-2);
}

.summary-card-value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--accent-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.summary-card-ci {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

@media (max-width: 768px) {
  .summary-cards-row {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ==========================================================
   28. LOGIN PAGE
   ========================================================== */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    hsl(210, 20%, 98%) 0%,
    hsl(213, 25%, 95%) 50%,
    hsl(37, 15%, 96%) 100%
  );
  padding: var(--space-4);
}

.login-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 400px;
  padding: var(--space-10) var(--space-8);
}

.login-logo {
  display: block;
  height: 32px;
  margin: 0 auto var(--space-3);
}

.login-title {
  font-size: var(--text-xl);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
  margin-bottom: var(--space-8);
}

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

.login-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.login-field input {
  width: 100%;
  height: 42px;
  padding: 0 var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  box-sizing: border-box;
}

.login-field input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.1);
  outline: none;
}

.login-field input::placeholder {
  color: var(--text-muted);
}

.login-btn {
  width: 100%;
  height: 42px;
  margin-top: var(--space-2);
  background: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-sm);
  color: hsl(0, 0%, 100%);
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px hsla(var(--navy-h), var(--navy-s), var(--navy-l), 0.2);
}

.login-btn:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.login-btn:active {
  transform: translateY(0);
}

.login-error {
  background: hsla(0, 72%, 51%, 0.06);
  border: 1px solid hsla(0, 72%, 51%, 0.15);
  color: hsl(0, 73%, 35%);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  text-align: center;
}


/* ==========================================================
   29. HEADER — User info & logout
   ========================================================== */

.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-user-name {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.header-logout-btn {
  background: none;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-family);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.header-logout-btn:hover {
  color: var(--accent-danger);
  border-color: hsla(0, 72%, 51%, 0.3);
  background: hsla(0, 72%, 51%, 0.04);
}