/* ==========================================================================
   SIRN Radio Display Portal — Core Stylesheet
   National Weather Service – Charleston, WV
   ---------------------------------------------------------------------------
   Theme-independent layout, typography, components, and utilities.
   All colors reference CSS custom properties defined in theme-dark.css or
   theme-light.css — never hard-code color values in this file.
   ========================================================================== */


/* ==========================================================================
   §1  RESET & BASE
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  /* Fluid base font: 14px on small laptops → 22px on 65″ wall displays.
     1.2vw hits ≈18px at 1500px and ≈22px at 1833px viewport width.         */
  font-size: clamp(14px, 1.2vw, 22px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.2s ease, color 0.2s ease;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}


/* ==========================================================================
   §2  LAYOUT SHELL
   ========================================================================== */

/* ---- Top bar ----------------------------------------------------------- */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3.5rem;               /* ≈56px at 16px base                      */
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  background-color: var(--bg-topbar);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
}

/* Logo / Title */
.topbar__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.topbar__brand-icon {
  width: 1.75rem;
  height: 1.75rem;
}

/* Navigation tabs */
.topbar__nav {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  margin: 0 auto;             /* center tabs in the available space        */
}

.topbar__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0 0.85rem;
  height: 3.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.topbar__nav-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.topbar__nav-link--active {
  color: var(--accent-primary);
}

/* Active underline indicator */
.topbar__nav-link--active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background-color: var(--accent-primary);
  border-radius: 2px 2px 0 0;
}

/* Controls cluster (right side) */
.topbar__controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

/* Theme toggle */
.topbar__theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.topbar__theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* Sun / Moon icon swap via data-theme attribute */
:root[data-theme="dark"] .topbar__theme-icon--sun  { display: none; }
:root[data-theme="dark"] .topbar__theme-icon--moon { display: inline; }
:root[data-theme="light"] .topbar__theme-icon--sun  { display: inline; }
:root[data-theme="light"] .topbar__theme-icon--moon { display: none; }

/* SSE connection status dot */
.topbar__status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background-color 0.3s ease;
}

.topbar__status-dot--connected {
  background-color: var(--status-connected);
  box-shadow: 0 0 6px var(--status-connected);
}

.topbar__status-dot--disconnected {
  background-color: var(--status-disconnected);
  box-shadow: 0 0 6px var(--status-disconnected);
}

.topbar__status-dot--reconnecting {
  background-color: var(--status-reconnecting);
  animation: statusPulse 1.5s ease-in-out infinite;
}

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

/* Clock display */
.topbar__clock {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Hamburger toggle (visible on narrow screens) */
.topbar__hamburger {
  display: none;                /* shown via media query                    */
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
}


/* ---- Sidebar ----------------------------------------------------------- */

.sidebar {
  position: fixed;
  top: 3.5rem;                  /* below topbar                            */
  left: 0;
  bottom: 0;
  width: 17.5rem;              /* 280px at 16px base                       */
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 90;
  transition: width 0.25s ease, transform 0.25s ease;
}

.sidebar--collapsed {
  width: 0;
  overflow: hidden;
  border-right: none;
}

.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.sidebar__toggle-all {
  font-size: 0.7rem;
  color: var(--accent-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.sidebar__toggle-all:hover {
  text-decoration: underline;
}


/* ---- Talkgroup filter tree --------------------------------------------- */

.tg-tree {
  padding: 0 0.75rem 1rem;
}

/* Category header */
.tg-tree__category {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.25rem 0.3rem;
  font-size: 0.78rem;
  font-weight: 700;
  font-variant: small-caps;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

/* Color dot next to category / talkgroup name */
.tg-tree__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.tg-tree__dot--fire          { background-color: var(--color-fire); }
.tg-tree__dot--police        { background-color: var(--color-police); }
.tg-tree__dot--ems           { background-color: var(--color-ems); }
.tg-tree__dot--dot           { background-color: var(--color-dot); }
.tg-tree__dot--government    { background-color: var(--color-government); }
.tg-tree__dot--uncategorized { background-color: var(--color-uncategorized); }

/* Individual talkgroup item */
.tg-tree__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.25rem 0.25rem 1.25rem;   /* indented under category   */
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.tg-tree__item:hover {
  color: var(--text-primary);
}

.tg-tree__checkbox {
  width: 0.85rem;
  height: 0.85rem;
  accent-color: var(--accent-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.tg-tree__label {
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Expand / collapse chevron for categories */
.tg-tree__chevron {
  margin-left: auto;
  font-size: 0.65rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.tg-tree__chevron--expanded {
  transform: rotate(90deg);
}

/* Hidden children when category is collapsed */
.tg-tree__children--collapsed {
  display: none;
}


/* ---- Main content area ------------------------------------------------- */

.main-content {
  margin-left: 17.5rem;         /* matches sidebar width                   */
  margin-top: 3.5rem;           /* matches topbar height                   */
  padding: 1rem;
  min-height: calc(100vh - 3.5rem);
  transition: margin-left 0.25s ease;
}

.sidebar--collapsed ~ .main-content,
.main-content--expanded {
  margin-left: 0;
}


/* ==========================================================================
   §3  TRANSCRIPT CARDS
   ========================================================================== */

.transcript-card {
  position: relative;
  background-color: var(--bg-card);
  border-radius: 0.5rem;
  border-left: 4px solid var(--border-color);   /* overridden per-category  */
  padding: 1rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
  animation: slideIn 0.3s ease-out;
}

.transcript-card:hover {
  background-color: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

/* Category left-border colors */
.transcript-card--fire          { border-left-color: var(--color-fire); }
.transcript-card--police        { border-left-color: var(--color-police); }
.transcript-card--ems           { border-left-color: var(--color-ems); }
.transcript-card--dot           { border-left-color: var(--color-dot); }
.transcript-card--government    { border-left-color: var(--color-government); }
.transcript-card--uncategorized { border-left-color: var(--color-uncategorized); }

/* Slide-in for new cards */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Card header ------------------------------------------------------- */

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.card-header__alpha-tag {
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}

/* Color-coded alpha tags */
.card-header__alpha-tag--fire          { color: var(--color-fire); }
.card-header__alpha-tag--police        { color: var(--color-police); }
.card-header__alpha-tag--ems           { color: var(--color-ems); }
.card-header__alpha-tag--dot           { color: var(--color-dot); }
.card-header__alpha-tag--government    { color: var(--color-government); }
.card-header__alpha-tag--uncategorized { color: var(--color-uncategorized); }

.card-header__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.card-header__timestamp {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.card-header__duration {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.45rem;
  font-size: 0.65rem;
  font-weight: 600;
  border-radius: 999px;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ---- Card body --------------------------------------------------------- */

.card-body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
  padding: 0.25rem 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Keyword highlights — inline spans around matched text */
.kw-info {
  background-color: var(--keyword-info-bg);
  color: var(--keyword-info-text);
  padding: 0.125rem 0.3rem;
  border-radius: 3px;
  font-weight: 600;
}

.kw-warning {
  background-color: var(--keyword-warning-bg);
  color: var(--keyword-warning-text);
  padding: 0.125rem 0.3rem;
  border-radius: 3px;
  font-weight: 600;
}

.kw-critical {
  background-color: var(--keyword-critical-bg);
  color: var(--keyword-critical-text);
  padding: 0.125rem 0.3rem;
  border-radius: 3px;
  font-weight: 600;
}

/* ---- Card footer ------------------------------------------------------- */

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
}

.card-footer__details {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.card-footer__detail {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

.card-footer__play-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.7rem;
  flex-shrink: 0;
  transition: color 0.15s ease, border-color 0.15s ease,
              background-color 0.15s ease;
}

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

.card-footer__play-btn--playing {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}


/* ==========================================================================
   §4  CRITICAL ALERT PULSE
   ========================================================================== */

.transcript-card--critical {
  animation: slideIn 0.3s ease-out, criticalPulse 2s ease-in-out 3;
  animation-delay: 0s, 0.3s;
}

@keyframes criticalPulse {
  0%, 100% {
    border-left-color: var(--color-fire);
    box-shadow: var(--shadow-sm);
  }
  50% {
    border-left-color: #fbbf24;
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
  }
}


/* ==========================================================================
   §5  NEW TRANSCRIPT BANNER
   ========================================================================== */

.new-transcript-banner {
  position: fixed;
  top: calc(3.5rem + 0.75rem);   /* below topbar with spacing              */
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: background-color 0.15s ease, transform 0.15s ease;
  animation: bannerSlideDown 0.3s ease-out;
}

.new-transcript-banner:hover {
  background-color: var(--accent-primary-hover);
  transform: translateX(-50%) scale(1.03);
}

@keyframes bannerSlideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}


/* ==========================================================================
   §6  SEARCH PAGE
   ========================================================================== */

.search-bar {
  position: relative;
  width: 100%;
  margin-bottom: 1rem;
}

.search-bar__icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
}

.search-bar__input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.75rem;
  font-size: 1rem;
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-bar__input::placeholder {
  color: var(--text-muted);
}

.search-bar__input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Filter panel */
.filter-panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1rem;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.filter-panel--collapsed {
  max-height: 0;
  padding: 0 1rem;
  overflow: hidden;
  opacity: 0;
  border: none;
  margin-bottom: 0;
}

.filter-panel__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
}

.filter-panel__toggle:hover {
  color: var(--text-primary);
}

.filter-panel__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 1rem;
}

.filter-panel__group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.filter-panel__group input,
.filter-panel__group select {
  width: 100%;
  padding: 0.4rem 0.6rem;
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  font-size: 0.85rem;
}

.filter-panel__group input:focus,
.filter-panel__group select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Date range quick-select pills */
.date-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.date-presets__pill {
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
              border-color 0.15s ease;
}

.date-presets__pill:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.date-presets__pill--active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 1rem 0;
}

.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.78rem;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pagination__btn:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

.pagination__btn--active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}


/* ==========================================================================
   §7  KEYWORDS PAGE
   ========================================================================== */

.keywords-table {
  width: 100%;
  font-size: 0.85rem;
}

.keywords-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-color);
}

.keywords-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

/* Striped rows */
.keywords-table tbody tr:nth-child(even) {
  background-color: var(--bg-primary);
}

.keywords-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

/* Active/inactive toggle switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 2.5rem;
  height: 1.35rem;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch__slider {
  position: absolute;
  inset: 0;
  background-color: var(--text-muted);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.toggle-switch__slider::before {
  content: "";
  position: absolute;
  top: 0.15rem;
  left: 0.15rem;
  width: 1.05rem;
  height: 1.05rem;
  background-color: #ffffff;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.toggle-switch input:checked + .toggle-switch__slider {
  background-color: var(--status-connected);
}

.toggle-switch input:checked + .toggle-switch__slider::before {
  transform: translateX(1.15rem);
}

.toggle-switch input:focus-visible + .toggle-switch__slider {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* Add keyword form (inline) */
.keyword-form {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.keyword-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.keyword-form__field label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.keyword-form__field input,
.keyword-form__field select {
  padding: 0.4rem 0.6rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  font-size: 0.85rem;
}

.keyword-form__field input:focus,
.keyword-form__field select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}


/* ==========================================================================
   §8  ANALYTICS PAGE
   ========================================================================== */

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.chart-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.chart-container--full-width {
  grid-column: 1 / -1;
}

.chart-container__title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.chart-container__subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: -0.5rem;
  margin-bottom: 0.75rem;
}

/* Chart canvas wrapper — maintains responsive aspect ratio */
.chart-container__canvas-wrap {
  position: relative;
  width: 100%;
}

/* Time range selector pills (above charts) */
.chart-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.chart-controls__range {
  display: flex;
  gap: 0.25rem;
}

.chart-controls__range-pill {
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
              border-color 0.15s ease;
}

.chart-controls__range-pill:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.chart-controls__range-pill--active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

/* Summary stat cards */
.stat-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
}

.stat-card__label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.stat-card__value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.stat-card__sub {
  font-size: 0.72rem;
  color: var(--text-secondary);
}


/* ==========================================================================
   §9  BADGES & BUTTONS — Utility Components
   ========================================================================== */

/* ---- Badge ------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  font-size: 0.68rem;
  font-weight: 600;
  border-radius: 999px;
  white-space: nowrap;
  line-height: 1.4;
}

.badge--info {
  background-color: var(--keyword-info-bg);
  color: var(--keyword-info-text);
}

.badge--warning {
  background-color: var(--keyword-warning-bg);
  color: var(--keyword-warning-text);
}

.badge--critical {
  background-color: var(--keyword-critical-bg);
  color: var(--keyword-critical-text);
}

.badge--fire          { background-color: var(--color-fire);          color: #ffffff; }
.badge--police        { background-color: var(--color-police);        color: #ffffff; }
.badge--ems           { background-color: var(--color-ems);           color: #ffffff; }
.badge--dot           { background-color: var(--color-dot);           color: #ffffff; }
.badge--government    { background-color: var(--color-government);    color: #ffffff; }
.badge--uncategorized { background-color: var(--color-uncategorized); color: #ffffff; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 0.375rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease,
              border-color 0.15s ease, box-shadow 0.15s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

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

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

.btn--ghost:hover:not(:disabled) {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

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

.btn--danger:hover:not(:disabled) {
  opacity: 0.9;
}

.btn--sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.72rem;
}


/* ==========================================================================
   §10  FORM ELEMENTS
   ========================================================================== */

.form-input,
.form-select {
  width: 100%;
  padding: 0.45rem 0.65rem;
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  font-size: 0.85rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

.form-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}


/* ==========================================================================
   §11  UTILITY CLASSES
   ========================================================================== */

.hidden {
  display: none !important;
}

/* Screen-reader only — visually hidden but accessible to AT */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-right  { text-align: right; }

.flex       { display: flex; }
.flex-col   { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm     { gap: 0.5rem; }
.gap-md     { gap: 1rem; }
.gap-lg     { gap: 1.5rem; }

.mt-sm { margin-top: 0.5rem; }
.mt-md { margin-top: 1rem; }
.mb-sm { margin-bottom: 0.5rem; }
.mb-md { margin-bottom: 1rem; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Empty state placeholder */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-muted);
}

.empty-state__icon {
  font-size: 2.5rem;
  opacity: 0.5;
}

.empty-state__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.empty-state__text {
  font-size: 0.85rem;
  max-width: 28rem;
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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


/* ==========================================================================
   §12  SCROLLBAR STYLING
   ========================================================================== */

/* WebKit (Chrome, Edge, Safari) */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}


/* ==========================================================================
   §13  RESPONSIVE BREAKPOINTS
   ========================================================================== */

/* -- Narrow: tablets and small laptops ----------------------------------- */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    transform: translateX(-100%);
    z-index: 99;
    width: 17.5rem;
  }

  .sidebar--open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .sidebar--collapsed {
    transform: translateX(-100%);
  }

  .main-content {
    margin-left: 0;
  }

  .topbar__hamburger {
    display: inline-flex;
  }

  .topbar__nav-link span {
    display: none;               /* icon-only nav on small screens          */
  }

  .chart-grid {
    grid-template-columns: 1fr;
  }

  .filter-panel__grid {
    grid-template-columns: 1fr;
  }

  .keyword-form {
    flex-direction: column;
    align-items: stretch;
  }
}

/* -- Very narrow: phones (unlikely primary use, but don't break) --------- */
@media (max-width: 480px) {
  .topbar {
    padding: 0 0.75rem;
  }

  .topbar__brand span {
    display: none;               /* icon only                               */
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .card-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .date-presets {
    flex-direction: column;
  }
}

/* -- Wide: large monitors & wall displays -------------------------------- */
@media (min-width: 1600px) {
  .chart-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* -- Extra-wide: 65″ wall displays at high resolution -------------------- */
@media (min-width: 2400px) {
  .topbar {
    height: 4rem;
    padding: 0 2rem;
  }

  .sidebar {
    top: 4rem;
    width: 22rem;
  }

  .main-content {
    margin-left: 22rem;
    margin-top: 4rem;
    padding: 1.5rem;
  }

  .sidebar--collapsed ~ .main-content,
  .main-content--expanded {
    margin-left: 0;
  }

  .transcript-card {
    padding: 1.25rem;
    border-left-width: 5px;
  }
}


/* ==========================================================================
   §14  PRINT STYLES
   ========================================================================== */

@media print {
  /* Hide chrome */
  .topbar,
  .sidebar,
  .new-transcript-banner,
  .topbar__hamburger,
  .card-footer__play-btn,
  .filter-panel__toggle,
  .chart-controls,
  .pagination {
    display: none !important;
  }

  /* Reset layout */
  .main-content {
    margin: 0 !important;
    padding: 0 !important;
  }

  /* Clean card appearance */
  .transcript-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #cccccc;
    border-left-width: 4px;
    margin-bottom: 0.5rem;
    page-break-inside: avoid;
  }

  /* Ensure readable text */
  body {
    background: #ffffff;
    color: #000000;
    font-size: 11pt;
  }

  a {
    color: #000000;
    text-decoration: underline;
  }

  /* Show full timestamps */
  .card-header__timestamp::after {
    content: attr(title);
  }
}


/* ==========================================================================
   §15  ACCESSIBILITY ENHANCEMENTS
   ========================================================================== */

/* Focus-visible outlines for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .transcript-card {
    animation: none;
  }

  .transcript-card--critical {
    animation: none;
    border-left-color: var(--color-fire);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.25);
  }
}

/* High contrast mode adjustments */
@media (forced-colors: active) {
  .tg-tree__dot,
  .topbar__status-dot {
    forced-color-adjust: none;
  }

  .badge {
    border: 1px solid;
  }

  .toggle-switch__slider {
    border: 1px solid;
  }
}