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

/* === Design Tokens (from UI-SPEC) === */
:root {
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Typography */
  --font-body: system-ui, -apple-system, sans-serif;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 20px;
  --text-display: 56px;

  /* Colors - Base */
  --color-bg: #FFFFFF;
  --color-surface: #F5F5F5;
  --color-accent: #2563EB;
  --color-text: #333333;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;

  /* Colors - Occupancy levels */
  --occ-low-text: #166534;
  --occ-low-bg: #DCFCE7;
  --occ-mod-text: #854D0E;
  --occ-mod-bg: #FEF9C3;
  --occ-high-text: #9A3412;
  --occ-high-bg: #FFEDD5;
  --occ-full-text: #991B1B;
  --occ-full-bg: #FEE2E2;

  /* Chart */
  --chart-line: #2563EB;
  --chart-fill: rgba(37, 99, 235, 0.1);
  --chart-grid: #F3F4F6;
  --chart-capacity: #EF4444;
  --chart-tooltip-bg: #1F2937;
  --chart-tooltip-text: #FFFFFF;

  /* Phase 3: Visual identity */
  --color-gradient-end: #38BDF8;

  /* Phase 8: Weather card tokens */
  --text-weather-temp: 28px;
  --weather-cold-start: #60A5FA;
  --weather-cold-end: #3B82F6;
  --weather-mild-start: #34D399;
  --weather-mild-end: #38BDF8;
  --weather-warm-start: #FBBF24;
  --weather-warm-end: #F97316;
  --weather-hot-start: #F97316;
  --weather-hot-end: #EF4444;

  /* Phase 4: Calendar date picker */
  --color-calendar-available: #DBEAFE;
  --color-calendar-disabled: #D1D5DB;
}

/* === Global === */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  margin: 0;
  padding: 0;
  overflow-y: scroll; /* prevent layout shift when scrollbar appears/disappears */
}

.app-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-md);
  position: relative;
}

[hidden] { display: none !important; }

/* === Header === */
header {
  text-align: center;
  /* background removed — moved to .header-bg */
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md) var(--space-sm);
  margin: 0;
  position: relative;
  overflow: hidden;
}

.header-content {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

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

/* Phase 9: parallax background layer — positioned absolutely inside header */
.header-bg {
  position: absolute;
  top: -100px;    /* 100px overscan — absorbs ~220px scroll at factor 0.45 */
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(100% + 100px);
  z-index: 0;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-gradient-end) 50%, #7DD3FA 100%);
}

header h1 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin: var(--space-xs) 0 var(--space-xs);
  line-height: 1.2;
  color: inherit;
}

.header-emoji {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.subtitle {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

/* === Wave Divider (D-09) === */
.wave-divider {
  width: 100%;
  height: 20px;
  overflow: hidden;
  line-height: 0;
  background: linear-gradient(to right, var(--color-accent), var(--color-gradient-end));
  margin: 0;
  padding: 0;
}

.wave-divider svg {
  display: block;
  width: 200%;
  height: 100%;
  animation: wave-scroll 12s linear infinite;
}

@keyframes wave-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* === Day Navigation === */
.day-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  margin-bottom: var(--space-xs);
  position: relative;
}

.nav-arrow {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-accent);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  transition: background-color 0.15s;
}

.nav-arrow:hover:not(:disabled) {
  background-color: var(--color-surface);
}

.nav-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.nav-arrow-text {
  display: none;
}

.nav-center {
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 600;
  flex: 1;
  padding: 0 var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.today-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 2px 8px;
  border-radius: 10px;
}

/* === View Tabs (CMP-03) === */
.view-tabs {
  display: flex;
  gap: 0;
  margin-bottom: var(--space-sm);
}

.view-tab {
  flex: 1;
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  min-height: 44px;
  transition: background-color 0.15s, color 0.15s;
}

.view-tab:first-child {
  border-radius: 8px 0 0 8px;
}

.view-tab:last-child {
  border-radius: 0 8px 8px 0;
}

.view-tab + .view-tab {
  border-left: none;
}

.view-tab.active {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.view-tab:hover:not(.active):not(:disabled) {
  background: var(--color-surface);
}

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

/* === Calendar Trigger (NAV-02) === */
.calendar-trigger {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-base);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s;
}

.calendar-trigger:hover {
  background: var(--color-surface);
}

/* === Calendar Overlay (NAV-02) === */
.calendar-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding-top: var(--space-xs);
}

.calendar-container {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  position: relative;
}

.calendar-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.calendar-month-label {
  flex: 1;
  text-align: center;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  text-transform: lowercase;
}

.calendar-nav-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-xs);
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  font-size: var(--text-base);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s;
}

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

.calendar-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  margin-bottom: var(--space-xs);
}

.calendar-weekdays span {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-xs);
}

.calendar-day {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border-radius: 8px;
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text);
  background: transparent;
  border: 2px solid transparent;
  cursor: default;
  transition: background-color 0.15s;
  padding: 0;
  font-family: var(--font-body);
}

.calendar-day.available {
  background: var(--color-calendar-available);
  cursor: pointer;
}

.calendar-day.available:hover {
  background: rgba(37, 99, 235, 0.2);
}

.calendar-day.selected {
  background: var(--color-accent);
  color: #FFFFFF;
  cursor: default;
}

.calendar-day.today {
  border-color: var(--color-accent);
}

.calendar-day.today.selected {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.calendar-day.disabled {
  color: var(--color-calendar-disabled);
  cursor: not-allowed;
}

.calendar-day.empty {
  visibility: hidden;
}

.calendar-close-btn {
  flex-shrink: 0;
  margin-left: auto;
  background: none;
  border: none;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background-color 0.15s;
}

.calendar-close-btn:hover {
  background: var(--color-surface);
}

/* === Off-season Banner (D-05, D-06) === */
.offseason-banner {
  background: var(--occ-mod-bg);
  color: var(--occ-mod-text);
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: 8px;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

/* === Hero Occupancy Indicator === */
.hero {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
  text-align: left;
  padding: var(--space-md) 0;
}

.hero-label-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-sm);
}

.hero-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 600;
}

@keyframes live-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-live-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #e53e3e;
  animation: live-blink 1.2s ease-in-out infinite;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: 16px;
  margin-bottom: var(--space-sm);
}

.hero-number {
  font-size: 36px;
  font-weight: 600;
  line-height: 1.0;
}

.hero-capacity {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.hero-level {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
}

/* === Weather Skeleton Loader (HRO-03) === */
.weather-skeleton {
  background: linear-gradient(90deg, #E5E7EB 25%, #F3F4F6 50%, #E5E7EB 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 12px;
  max-width: 200px;
  margin: var(--space-sm) auto;
  height: 100px;
}

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

.hero-left {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.hero-right {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

/* Hero weather card — compact mobile baseline (MOB-03: label must NOT be hidden) */
.hero-right .weather-card {
  max-width: none;
  width: auto;
  margin: 0;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 8px;
  gap: var(--space-sm);
  box-shadow: none;
}
.hero-right .weather-card .weather-card-temp {
  font-size: var(--text-sm);
}
.hero-right .weather-skeleton {
  max-width: none;
  width: 120px;
  height: 60px;
  margin: 0;
}

@media (min-width: 768px) {
  .hero {
    align-items: stretch;
    gap: var(--space-lg);
  }
  .hero-capacity {
    display: block;
  }
  .hero-left {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }
  .hero-right {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }
  .hero-badge {
    padding: var(--space-md) var(--space-xl);
    width: 200px;
    height: 100px;
  }
  .hero-number {
    font-size: var(--text-display);
  }
  .hero-right .weather-card {
    max-width: none;
    width: 200px;
    height: 100px;
    padding: var(--space-md);
    border-radius: 12px;
    gap: var(--space-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    /* offset by hero-label height to top-align with .hero-badge */
    margin: calc(var(--text-sm) * 1.5 + var(--space-sm)) 0 0 0;
  }
  .hero-right .weather-card .weather-card-temp {
    font-size: var(--text-weather-temp);
  }
  .hero-right .weather-skeleton {
    max-width: none;
    width: 200px;
    height: 100px;
    margin: calc(var(--text-sm) * 1.5 + var(--space-sm)) 0 0 0;
  }
}

/* === Weather Strip (D-01, D-02) === */
.weather-strip {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-top: var(--space-sm);
  margin-bottom: 0;
  text-align: center;
}

/* === Weather Card (WEA-01, WEA-02, WEA-03) === */
.weather-card {
  max-width: 200px;
  margin: var(--space-sm) auto;
  padding: var(--space-md);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  color: #FFFFFF;
}

/* Compact variant (compare slots — WEA-04) */
.weather-card-compact {
  max-width: none;
  margin: var(--space-xs) 0;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 8px;
  gap: var(--space-sm);
  box-shadow: none;
}

/* Temperature tier gradients */
.weather-tier-cold {
  background: linear-gradient(135deg, var(--weather-cold-start), var(--weather-cold-end));
}

.weather-tier-mild {
  background: linear-gradient(135deg, var(--weather-mild-start), var(--weather-mild-end));
}

.weather-tier-warm {
  background: linear-gradient(135deg, var(--weather-warm-start), var(--weather-warm-end));
}

.weather-tier-hot {
  background: linear-gradient(135deg, var(--weather-hot-start), var(--weather-hot-end));
}

/* Icon container */
.weather-card-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.weather-card-icon svg {
  color: #FFFFFF;
}

/* Text block (full card) */
.weather-card-info {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Temperature */
.weather-card-temp {
  font-size: var(--text-weather-temp);
  font-weight: 600;
  line-height: 1.0;
  color: #FFFFFF;
}

/* Compact temperature override */
.weather-card-compact .weather-card-temp {
  font-size: var(--text-sm);
  font-weight: 600;
}

/* Tier label (hidden in compact) */
.weather-card-label {
  font-size: var(--text-sm);
  font-weight: 400;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
}

.weather-card-compact .weather-card-label {
  display: none;
}

/* Precipitation */
.weather-card-precip {
  font-size: var(--text-sm);
  font-weight: 400;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
}

/* Compact separator */
.weather-card-sep {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
}

/* === Chart Container === */
.chart-container {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.chart-container canvas {
  width: 100% !important;
}

/* === Auto-Refresh Badge === */
.auto-refresh-badge {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  margin-bottom: var(--space-md);
}

.auto-refresh-badge.pulse {
  animation: badge-pulse 0.3s ease-in-out;
}

@keyframes badge-pulse {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* === State Messages (loading, empty, error) === */
.state-message {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--color-text-muted);
}

.state-message strong {
  display: block;
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.state-message p {
  margin: var(--space-sm) 0 0;
  font-size: var(--text-sm);
}

.state-message.error {
  color: #991B1B;
}

.state-message.error strong {
  color: #991B1B;
}

/* === Responsive: < 360px === */
@media (max-width: 359px) {
  .hero-number {
    font-size: 48px;
  }

  .nav-center {
    font-size: 12px;
  }
}

/* === Responsive: > 480px show arrow text === */
@media (min-width: 480px) {
  .nav-arrow-text {
    display: inline;
  }
}

/* ===================================
   Phase 5: Compare View
   =================================== */

/* Responsive 2-column grid */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 601px) {
  .compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Slot card */
.compare-slot {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* Slot header row: label + picker button */
.slot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.slot-label {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.2;
}

/* .slot-picker-btn inherits all .calendar-trigger rules — no extra styles needed */

/* Mini hero row */
.slot-mini-hero {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
}

.mini-hero-date {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.4;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mini-hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 8px;
  flex-shrink: 0;
  /* background-color and color set via JS: level.bgColor / level.textColor */
}

.mini-hero-number {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.0;
  /* color set via JS: level.textColor */
}

.mini-hero-level {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  flex-shrink: 0;
}

/* Empty slot placeholder */
.slot-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-style: italic;
  text-align: center;
  min-height: 80px;
}

/* Slot chart container — canvas fills slot width */
.slot-chart canvas {
  width: 100% !important;
}

/* === Desktop: wider layout at ≥768px === */
@media (min-width: 768px) {
  .app-container {
    max-width: 900px;
  }
  .header-content {
    max-width: 900px;
  }
}

/* === Summary View (Phase 15) === */

/* CSS spinner */
.summary-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: var(--space-sm);
  vertical-align: middle;
}

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

/* Summary card grid — 3-up on desktop, stacked on mobile (per D-11) */
.summary-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

@media (min-width: 600px) {
  .summary-cards {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* Individual card — hero-badge variant (per D-11) */
.summary-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-md);
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: relative;
  overflow: hidden;
}

/* Coloured top accent stripe per card */
.summary-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: 14px 14px 0 0;
}

#card-top-days::before   { background: linear-gradient(90deg, #2563EB, #38BDF8); }
#card-peak-hour::before  { background: linear-gradient(90deg, #F59E0B, #FCD34D); }
#card-busiest-day::before { background: linear-gradient(90deg, #10B981, #6EE7B7); }

.summary-card-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-card-value {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.summary-card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Top-5 days ordered list (per D-12) */
.top-days-list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}

.top-days-list li {
  border-bottom: 1px solid var(--color-border);
}

.top-days-list li:last-child {
  border-bottom: none;
}

/* Clickable row — full-width button (each top-5 day navigates to chart) */
.top-days-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  width: 100%;
  padding: var(--space-xs) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: left;
  gap: var(--space-xs);
}

.top-days-item:hover {
  color: var(--color-accent);
}

.top-days-item:hover .top-days-rank {
  color: var(--color-accent);
}

/* Card value colours match their stripe */
#card-peak-hour   .summary-card-value { color: #D97706; }
#card-busiest-day .summary-card-value { color: #059669; }

.top-days-rank {
  font-weight: 700;
  color: var(--color-accent);
  margin-right: var(--space-sm);
  min-width: 1.5em;
}

.top-days-date {
  flex: 1;
}

.top-days-value {
  font-weight: 600;
  margin-left: var(--space-sm);
  white-space: nowrap;
}

/* Phase 16: Summary analysis charts */
#summary-charts {
  margin-top: var(--space-md);
}

.summary-chart-section {
  margin-bottom: var(--space-lg);
}

.summary-chart-section h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.summary-chart-wrapper {
  position: relative;
  /* height set inline per chart: 200px (hourly), 180px (weekday) */
}

.summary-chart-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* Phase 17: Correlation section in summary view */
.summary-section-heading {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.summary-corr-status {
  text-align: center;
  padding: var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* === Footer (INFO-01, D-01, D-02, D-03) === */
.site-footer {
  text-align: center;
  padding: var(--space-lg) var(--space-md) var(--space-md);
}

.about-link {
  background: none;
  border: none;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: underline;
  text-decoration-style: dotted;
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  transition: color 0.15s, background-color 0.15s;
}

.about-link:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

/* === About Modal (INFO-02, D-04, D-05, D-06, D-07) === */
.about-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 1;
  transition: opacity 0.15s;
}

.about-dialog {
  background: var(--color-bg);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.about-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-md) 0;
  position: sticky;
  top: 0;
  background: var(--color-bg);
}

.about-title {
  flex: 1;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.about-close-btn {
  flex-shrink: 0;
  margin-left: auto;
  background: none;
  border: none;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background-color 0.15s;
}

.about-close-btn:hover {
  background: var(--color-surface);
}

.about-body {
  padding: var(--space-md);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: 1.6;
}

.about-body p {
  margin: 0 0 var(--space-md);
}

.about-body p:last-child {
  margin-bottom: 0;
}

.about-official-link {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  word-break: break-all;
}

.about-official-link:hover {
  text-decoration: underline;
}

.about-privacy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* === Accessibility: disable all animations for reduced-motion users === */
@media (prefers-reduced-motion: reduce) {
  .wave-divider svg {
    animation: none;
    width: 100%;
  }
  .auto-refresh-badge.pulse {
    animation: none;
  }
  .header-bg { transform: none !important; }
  .weather-skeleton {
    animation: none;
    background: #E5E7EB;
  }
  .summary-spinner {
    animation: none;
    border-top-color: var(--color-border);
    opacity: 0.5;
  }
  .about-overlay {
    transition: none;
  }
}