/* Pidiki Climate Dashboard - High Legibility Theme for Seniors (70+) */
:root {
  --bg-primary: #0a0e17;
  --bg-surface: #141c2b;
  --bg-surface-hover: #1c273c;
  --bg-surface-elevated: #1e2a40;
  --border-color: rgba(255, 255, 255, 0.16);
  --border-color-glow: rgba(255, 255, 255, 0.35);

  /* High contrast typography colors */
  --text-primary: #ffffff;
  --text-secondary: #d0d8e2;
  --text-muted: #9aa8b8;

  /* High contrast climate colors */
  --temp-primary: #ff8566;
  --temp-glow: rgba(255, 133, 102, 0.3);
  --hum-primary: #38d9a9;
  --hum-glow: rgba(56, 217, 169, 0.3);

  /* Badges */
  --badge-ideal-bg: #093c2c;
  --badge-ideal-text: #48e5b4;
  --badge-warn-bg: #442a08;
  --badge-warn-text: #ffb84d;
  --badge-alert-bg: #451318;
  --badge-alert-text: #ff7882;

  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --transition-fast: 0.15s ease;
}

/* Base & Typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.45;
  font-size: 18px; /* Increased base font size for 70+ accessibility */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Atmosphere */
.background-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 20% 15%, rgba(255, 133, 102, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 80% 25%, rgba(56, 217, 169, 0.08) 0%, transparent 45%),
    #0a0e17;
  z-index: -1;
  pointer-events: none;
}

/* Layout Container: Optimized for 1080p laptop display (1920x1080) */
.app-container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 24px 24px 60px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 28px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: 28px;
}

.header-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-title {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.brand-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Status & Big Refresh Button */
.header-status-panel {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.status-indicator-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid var(--border-color);
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.status-indicator-badge.online {
  border-color: rgba(56, 217, 169, 0.5);
  background: rgba(9, 60, 44, 0.4);
  color: #38d9a9;
}

.status-pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--text-muted);
}

.status-indicator-badge.online .status-pulse-dot {
  background-color: #38d9a9;
  box-shadow: 0 0 10px #38d9a9;
}

.sync-time-wrapper {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.sync-timestamp {
  font-weight: 600;
  color: #ffffff;
}

/* Big High-Contrast Refresh Button */
.btn-refresh {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  min-height: 48px;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-refresh:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #ffffff;
  transform: translateY(-1px);
}

.spinning {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Alert Banner */
.alert-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--badge-alert-bg);
  border: 1.5px solid var(--badge-alert-text);
  border-radius: var(--radius-md);
  color: var(--badge-alert-text);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.alert-banner.hidden {
  display: none;
}

.alert-dismiss {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.6rem;
  cursor: pointer;
  padding: 0 8px;
}

/* Sections */
.dashboard-main {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.section-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.01em;
}

/* 3 Location Cards Grid */
.locations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 1150px) {
  .locations-grid {
    grid-template-columns: 1fr;
  }
}

/* High-Legibility Location Card */
.location-card {
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 22px;
  transition: border-color var(--transition-fast);
}

.location-card:hover {
  border-color: var(--border-color-glow);
  background: var(--bg-surface-hover);
}

.card-header {
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 14px;
}

.card-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Dual Metrics Container */
.metrics-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 500px) {
  .metrics-row {
    grid-template-columns: 1fr;
  }
}

/* Giant Metric Blocks */
.metric-block {
  background: rgba(0, 0, 0, 0.25);
  border: 1.5px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.metric-label {
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.trend-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  font-size: 1.2rem;
  font-weight: 900;
  border-radius: 50%;
  cursor: help;
  user-select: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.trend-badge:hover {
  transform: scale(1.15);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.25);
}

.trend-rising {
  color: #ff9980;
  background: rgba(255, 107, 107, 0.25);
  border: 1.5px solid rgba(255, 107, 107, 0.45);
}

.trend-falling {
  color: #66b3ff;
  background: rgba(51, 154, 240, 0.25);
  border: 1.5px solid rgba(51, 154, 240, 0.45);
}

.trend-stable {
  color: #d0d8e2;
  background: rgba(255, 255, 255, 0.1);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
}

/* Giant Primary Numbers */
.metric-value-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 4px 0;
}

.metric-value {
  font-size: 3.4rem; /* Giant legible number for seniors */
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
}

.metric-block.temp .metric-value {
  color: var(--temp-primary);
  text-shadow: 0 0 16px var(--temp-glow);
}

.metric-block.hum .metric-value {
  color: var(--hum-primary);
  text-shadow: 0 0 16px var(--hum-glow);
}

.metric-unit {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
}

/* Large Comfort Badge */
.comfort-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

.comfort-badge.ideal {
  background: var(--badge-ideal-bg);
  color: var(--badge-ideal-text);
  border: 1px solid var(--badge-ideal-text);
}

.comfort-badge.dry {
  background: var(--badge-warn-bg);
  color: var(--badge-warn-text);
  border: 1px solid var(--badge-warn-text);
}

.comfort-badge.humid {
  background: var(--badge-alert-bg);
  color: var(--badge-alert-text);
  border: 1px solid var(--badge-alert-text);
}

/* Skeleton Loading */
.skeleton-card {
  min-height: 240px;
}

.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  width: 45%;
  height: 32px;
  margin-bottom: 16px;
}

.skeleton-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.skeleton-box {
  height: 130px;
}

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

/* History Explorer Controls: Big & Accessible */
.history-header-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 16px;
}

.history-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.explorer-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  width: 100%;
  gap: 14px;
}

.time-controls-group {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.metric-picker {
  margin-left: auto;
}

.control-group {
  display: inline-flex;
  align-items: stretch;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px;
  height: 56px;
  box-sizing: border-box;
}

.range-btn, .metric-filter-btn {
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.05rem; /* Large button text */
  font-weight: 700;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  box-sizing: border-box;
  transition: all var(--transition-fast);
}

.range-btn:hover, .metric-filter-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.range-btn.active, .metric-filter-btn.active {
  background: #ffffff;
  color: #0a0e17;
  font-weight: 800;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* Historical Month Dropdown: Senior-Friendly & High Contrast */
.month-select-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 56px;
  box-sizing: border-box;
}

.month-select {
  height: 56px;
  box-sizing: border-box;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0 42px 0 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a0aec0' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  line-height: normal;
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.month-select:hover {
  border-color: var(--border-color-glow);
  color: #ffffff;
  background-color: var(--bg-surface-hover);
}

.month-select:focus {
  outline: none;
  border-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.month-select.active {
  background-color: #ffffff;
  color: #0a0e17;
  font-weight: 800;
  border-color: #ffffff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230a0e17' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.month-select option {
  background: #141c2b;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 10px;
}

/* Location Filter Chips */
.location-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.loc-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 8px 18px;
  min-height: 44px;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid var(--border-color);
  border-radius: 30px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.loc-filter-chip:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.loc-filter-chip.active {
  background: rgba(255, 255, 255, 0.18);
  border-color: #ffffff;
  color: #ffffff;
}

.filter-check {
  font-size: 1rem;
  font-weight: 900;
  color: #38d9a9;
}

/* Chart Canvas Wrapper */
.chart-wrapper {
  position: relative;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  min-height: 480px;
}

.chart-canvas-container {
  position: relative;
  width: 100%;
  height: 440px;
}

.chart-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 14, 23, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-radius: var(--radius-lg);
  z-index: 10;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 600;
}

.chart-loading-overlay.hidden {
  display: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: #38d9a9;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Collapsible Statistics Table */
.stats-collapsible {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.stats-summary-btn {
  padding: 16px 22px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  list-style: none;
}

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

.stats-summary-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
}

.stats-summary-icon {
  font-size: 1.2rem;
  transition: transform var(--transition-fast);
}

.stats-collapsible[open] .stats-summary-icon {
  transform: rotate(180deg);
}

.analytics-card {
  padding: 0 22px 22px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.analytics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
  text-align: left;
}

.analytics-table th {
  padding: 12px 16px;
  font-weight: 800;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.analytics-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: #ffffff;
  font-size: 1.05rem;
}

.analytics-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.cell-loc {
  font-weight: 700;
  color: #ffffff;
}

.cell-metric-temp {
  color: var(--temp-primary);
  font-weight: 700;
}

.cell-metric-hum {
  color: var(--hum-primary);
  font-weight: 700;
}

.table-placeholder {
  text-align: center;
  color: var(--text-muted);
  padding: 20px !important;
}

/* Footer */
.app-footer {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1.5px solid var(--border-color);
  text-align: center;
}

.footer-content {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.footer-content a {
  color: var(--text-secondary);
  text-decoration: underline;
}

/* iPhone & Mobile Responsiveness */
@media (max-width: 768px) {
  .app-container {
    padding: 16px 14px 40px;
  }

  .brand-title {
    font-size: 1.7rem;
  }

  .brand-subtitle {
    font-size: 0.95rem;
  }

  .app-header {
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    gap: 14px;
  }

  .header-status-panel {
    justify-content: space-between;
  }

  .metric-value {
    font-size: 2.8rem;
  }

  .chart-wrapper {
    padding: 14px 10px;
    min-height: 380px;
  }

  .chart-canvas-container {
    height: 340px;
  }

  .time-controls-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .month-select-wrapper {
    width: 100%;
    height: 52px;
  }

  .month-select {
    width: 100%;
    height: 52px;
  }

  .control-group {
    width: 100%;
    height: 52px;
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .metric-picker {
    margin-left: 0;
    width: 100%;
  }

  .range-btn, .metric-filter-btn {
    flex: 1;
    text-align: center;
    padding: 0 10px;
    font-size: 0.95rem;
    white-space: nowrap;
  }
}