/* ==========================================================================
   K-Weather Live - Modern Glassmorphism & Atmospheric CSS Design System
   ========================================================================== */

/* -----------------------------
   1. CSS Custom Properties / Tokens
   ----------------------------- */
:root {
  /* Color Palette */
  --bg-primary: #0b0f19;
  --bg-surface: rgba(18, 24, 40, 0.72);
  --bg-surface-elevated: rgba(28, 36, 56, 0.85);
  --bg-surface-hover: rgba(38, 48, 74, 0.95);
  --bg-glass-card: rgba(22, 30, 49, 0.65);
  --bg-glass-input: rgba(11, 15, 25, 0.6);

  --border-glass: rgba(255, 255, 255, 0.1);
  --border-glass-bright: rgba(255, 255, 255, 0.22);
  --border-glass-subtle: rgba(255, 255, 255, 0.05);

  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-bright: #ffffff;

  --accent-cyan: #38bdf8;
  --accent-blue: #3b82f6;
  --accent-gold: #fbbf24;
  --accent-orange: #fb923c;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;
  --accent-purple: #a855f7;

  /* Typography */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Pretendard', sans-serif;
  --font-body: 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Shadows & Glows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px -8px rgba(0, 0, 0, 0.6);
  --shadow-glow-cyan: 0 0 24px rgba(56, 189, 248, 0.25);
  --shadow-glow-gold: 0 0 24px rgba(251, 191, 36, 0.25);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Dimensions */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --header-height: 76px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #e2e8f0;
  --bg-surface: rgba(255, 255, 255, 0.78);
  --bg-surface-elevated: rgba(255, 255, 255, 0.9);
  --bg-surface-hover: rgba(248, 250, 252, 0.98);
  --bg-glass-card: rgba(255, 255, 255, 0.7);
  --bg-glass-input: rgba(241, 245, 249, 0.85);

  --border-glass: rgba(0, 0, 0, 0.08);
  --border-glass-bright: rgba(0, 0, 0, 0.15);
  --border-glass-subtle: rgba(0, 0, 0, 0.04);

  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-bright: #020617;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 40px -8px rgba(0, 0, 0, 0.15);
}

/* Aurora Theme Variables */
[data-theme="aurora"] {
  --bg-primary: #070e17;
  --bg-surface: rgba(14, 28, 44, 0.72);
  --bg-glass-card: rgba(18, 38, 58, 0.65);
  --border-glass: rgba(56, 189, 248, 0.2);
  --accent-cyan: #2dd4bf;
  --accent-blue: #38bdf8;
  --shadow-glow-cyan: 0 0 30px rgba(45, 212, 191, 0.3);
}

/* -----------------------------
   2. Reset & Global Styles
   ----------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  transition: background 0.8s ease, color 0.3s ease;
  position: relative;
}

/* Atmospheric Dynamic Background Gradients */
body.weather-clear-day {
  background: radial-gradient(circle at 80% 20%, #38bdf822, transparent 50%),
              linear-gradient(145deg, #091a32 0%, #0d2847 40%, #08111e 100%);
}

body.weather-clear-night {
  background: radial-gradient(circle at 75% 15%, #6366f122, transparent 40%),
              linear-gradient(160deg, #060913 0%, #0b1124 50%, #030712 100%);
}

body.weather-clouds {
  background: radial-gradient(circle at 50% 10%, #64748b26, transparent 50%),
              linear-gradient(150deg, #0f172a 0%, #1a2234 45%, #0b0f19 100%);
}

body.weather-rain {
  background: radial-gradient(circle at 60% 0%, #0284c728, transparent 45%),
              linear-gradient(160deg, #081628 0%, #0e2439 50%, #06101c 100%);
}

body.weather-snow {
  background: radial-gradient(circle at 50% 10%, #e2e8f01f, transparent 45%),
              linear-gradient(150deg, #0f1c2e 0%, #1a2e46 50%, #091321 100%);
}

body.weather-thunderstorm {
  background: radial-gradient(circle at 50% 20%, #7c3aed33, transparent 50%),
              linear-gradient(160deg, #0c081e 0%, #171131 45%, #060411 100%);
}

body.weather-mist {
  background: radial-gradient(circle at 50% 30%, #94a3b822, transparent 60%),
              linear-gradient(150deg, #111827 0%, #1e293b 50%, #0f172a 100%);
}

/* Background Weather Animation Canvas */
.weather-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}

.app-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Glassmorphism Utility */
.glass-panel {
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* -----------------------------
   3. Header Navigation
   ----------------------------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 15, 25, 0.75);
  border-bottom: 1px solid var(--border-glass);
  transition: background var(--transition-normal);
}

[data-theme="light"] .app-header {
  background: rgba(255, 255, 255, 0.85);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.logo-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(99, 102, 241, 0.2));
  border: 1px solid var(--border-glass-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.logo-svg {
  width: 32px;
  height: 32px;
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .brand-title {
  background: linear-gradient(135deg, #0f172a 30%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Global Search Bar */
.search-box-wrapper {
  flex: 1;
  max-width: 480px;
}

.search-input-group {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 1rem;
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input-group input {
  width: 100%;
  padding: 0.65rem 2.6rem 0.65rem 2.6rem;
  border-radius: var(--radius-full);
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: all var(--transition-normal);
}

.search-input-group input:focus {
  border-color: var(--accent-cyan);
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-glow-cyan);
}

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

.search-clear-btn {
  position: absolute;
  right: 0.8rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 50%;
  display: none;
}

.search-clear-btn:hover {
  color: var(--text-main);
}

/* Header Actions Toolbar */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.unit-toggle-group {
  display: flex;
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 3px;
}

.unit-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.unit-btn.active {
  background: var(--accent-cyan);
  color: #0b0f19;
  box-shadow: var(--shadow-sm);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.action-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-glass-bright);
  transform: translateY(-1px);
}

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

/* Ambient Audio Synth Button */
.ambient-btn.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.ambient-btn.active .sound-mute-line {
  display: none;
}

.ambient-btn:not(.active) .sound-wave {
  opacity: 0.3;
}

/* Compare Mode Button */
.compare-btn {
  position: relative;
}

.compare-badge {
  background: var(--accent-orange);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

/* Refresh Button */
.refresh-btn.spinning .refresh-icon {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

.refresh-timer {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.theme-btn {
  padding: 0.5rem;
}

/* -----------------------------
   4. Main Content Layout
   ----------------------------- */
.main-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  flex: 1;
  width: 100%;
}

/* Hero Section: Featured City + Korea Map Side by Side */
.hero-section {
  display: grid;
  grid-template-columns: 1.65fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 1100px) {
  .hero-section {
    grid-template-columns: 1fr;
  }
}

/* -----------------------------
   5. Hero Main Weather Card
   ----------------------------- */
.hero-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.location-badge-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.4rem;
}

.region-pill {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.updated-time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hero-fav-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: transform var(--transition-spring), color var(--transition-fast);
  line-height: 1;
  padding: 0 0.2rem;
}

.hero-fav-btn:hover {
  transform: scale(1.25);
  color: var(--accent-gold);
}

.hero-fav-btn.active {
  color: var(--accent-gold);
  text-shadow: 0 0 10px rgba(251, 191, 36, 0.6);
}

.hero-city-name {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-bright);
}

.hero-city-en {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.hero-condition-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass-bright);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.hero-weather-icon {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.25));
}

.hero-weather-desc {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-bright);
}

/* Hero Main Temperature Display */
.hero-main-stats {
  display: flex;
  align-items: baseline;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-temp-container {
  display: flex;
  align-items: flex-start;
}

.hero-temp-number {
  font-family: var(--font-display);
  font-size: 5.5rem;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #ffffff 40%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero-temp-number {
  background: linear-gradient(180deg, #0f172a 40%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-temp-unit {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-top: 0.4rem;
  margin-left: 0.2rem;
}

.hero-temp-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.meta-label {
  color: var(--text-muted);
}

.meta-val {
  font-weight: 700;
  color: var(--text-bright);
}

.temp-minmax {
  display: flex;
  gap: 0.75rem;
}

.high-badge {
  color: var(--accent-rose);
  font-weight: 700;
  background: rgba(244, 63, 94, 0.12);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.low-badge {
  color: var(--accent-cyan);
  font-weight: 700;
  background: rgba(56, 189, 248, 0.12);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* -----------------------------
   6. 8-Metrics Grid
   ----------------------------- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
}

@media (max-width: 900px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

.metric-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-glass-bright);
}

.metric-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.metric-icon {
  font-size: 1.05rem;
}

.metric-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.metric-body {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -0.01em;
}

.metric-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.metric-footnote {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: auto;
}

/* Specific Metric Elements */
.humidity-bar-track, .cloud-bar-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.humidity-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #38bdf8, #3b82f6);
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

.cloud-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #94a3b8, #e2e8f0);
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

.wind-body {
  flex-direction: row;
  align-items: center;
  gap: 0.8rem;
}

.compass-dial {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border-glass-bright);
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.compass-needle {
  width: 3px;
  height: 18px;
  background: linear-gradient(to top, #64748b 50%, var(--accent-rose) 50%);
  border-radius: 2px;
  transform: rotate(0deg);
  transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.wind-dir-text {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Sun Times Gauge */
.sun-times-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.sun-time-item {
  display: flex;
  flex-direction: column;
}

.sun-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.sun-val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-bright);
}

.sun-arc-container {
  flex: 1;
  height: 24px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sun-arc-path {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
}

.sun-arc-progress {
  position: absolute;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-orange));
  width: 50%;
}

.sun-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 10px var(--accent-gold);
  left: 50%;
  transform: translateX(-50%);
}

.di-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.geo-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
}

.geo-label {
  color: var(--text-muted);
}

.geo-val {
  font-weight: 600;
  color: var(--text-secondary);
}

/* -----------------------------
   7. Hourly & Weekly Forecasts
   ----------------------------- */
.hourly-forecast-container, .weekly-forecast-container {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-glass-subtle);
  padding-bottom: 0.6rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-bright);
}

.inline-icon {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.2rem;
}

.legend-dot.temp-dot { background-color: var(--accent-cyan); }
.legend-dot.rain-dot { background-color: var(--accent-blue); }

.chart-wrapper {
  width: 100%;
  background: rgba(11, 15, 25, 0.35);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--border-glass-subtle);
}

#hourlyChart {
  width: 100%;
  display: block;
}

.hourly-timeline {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-glass-bright) transparent;
}

.hourly-timeline::-webkit-scrollbar {
  height: 5px;
}

.hourly-timeline::-webkit-scrollbar-thumb {
  background: var(--border-glass-bright);
  border-radius: var(--radius-full);
}

.hourly-card {
  min-width: 82px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  text-align: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.hourly-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-cyan);
}

.hourly-time {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.hourly-icon {
  width: 32px;
  height: 32px;
}

.hourly-temp {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-bright);
}

.hourly-rain {
  font-size: 0.7rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

/* 5-Day Weekly Grid */
.weekly-forecast-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
}

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

.weekly-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
}

.weekly-day {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-bright);
}

.weekly-date {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.weekly-icon {
  width: 40px;
  height: 40px;
  margin: 0.2rem 0;
}

.weekly-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.weekly-temp-range {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 700;
  margin-top: 0.2rem;
}

.weekly-max { color: var(--accent-rose); }
.weekly-min { color: var(--accent-cyan); }

/* -----------------------------
   8. Map Sidebar Panel
   ----------------------------- */
.map-sidebar {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  height: 100%;
}

.map-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.map-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-bright);
}

.map-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.map-reset-btn {
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.map-reset-btn:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

.korea-map-container {
  flex: 1;
  min-height: 440px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.korea-map-svg {
  width: 100%;
  height: 100%;
  max-height: 500px;
}

.land-path {
  fill: url(#koreaLandGrad);
  stroke: rgba(56, 189, 248, 0.3);
  stroke-width: 1.5;
  transition: fill var(--transition-normal);
}

[data-theme="light"] .land-path {
  fill: #cbd5e1;
  stroke: #94a3b8;
}

/* Interactive Map Markers */
.map-pin-group {
  cursor: pointer;
  transition: transform var(--transition-spring);
}

.map-pin-group:hover {
  transform: scale(1.18);
}

.map-pin-badge {
  fill: rgba(15, 23, 42, 0.92);
  stroke: rgba(56, 189, 248, 0.4);
  stroke-width: 1;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.4));
  rx: 6;
}

.map-pin-group.active .map-pin-badge {
  stroke: var(--accent-cyan);
  stroke-width: 2;
  fill: rgba(14, 165, 233, 0.3);
}

.map-pin-pulse {
  animation: mapPulse 2s infinite ease-out;
  transform-origin: center;
}

@keyframes mapPulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

.map-pin-text-name {
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: 700;
  fill: #f8fafc;
  text-anchor: middle;
}

.map-pin-text-temp {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 800;
  fill: var(--accent-cyan);
  text-anchor: middle;
}

.map-quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 0.65rem;
}

.quick-stat-item {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.stat-lbl {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-highlight {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-bright);
  margin-top: 0.2rem;
}

.stat-highlight.warm { color: var(--accent-rose); }
.stat-highlight.cold { color: var(--accent-cyan); }

/* -----------------------------
   9. 20-Cities Section & Grid
   ----------------------------- */
.cities-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-toolbar {
  padding: 0.85rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.region-filters {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
  max-width: 100%;
}

.filter-chip {
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-glass-bright);
}

.filter-chip.active {
  background: var(--accent-cyan);
  color: #0b0f19;
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-sm);
  font-weight: 700;
}

.filter-chip.fav-chip.active {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
}

.sort-selector-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.sort-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.custom-select-wrapper {
  position: relative;
}

.sort-select {
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

/* 20 Cities Grid */
.cities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

@media (max-width: 1200px) {
  .cities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 860px) {
  .cities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .cities-grid {
    grid-template-columns: 1fr;
  }
}

/* Individual City Card */
.city-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.city-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 100% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.city-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

.city-card.selected {
  border-color: var(--accent-cyan);
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-glow-cyan);
}

.city-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.city-title-group {
  display: flex;
  flex-direction: column;
}

.city-region-tag {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.city-card-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1.2;
}

.city-card-en {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-actions-top {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.card-fav-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.card-fav-btn:hover, .card-fav-btn.active {
  color: var(--accent-gold);
}

.city-card-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.city-card-temp-wrap {
  display: flex;
  align-items: baseline;
}

.city-card-temp {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-bright);
}

.city-card-unit {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-left: 0.2rem;
}

.city-card-icon-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.city-card-icon {
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.city-card-desc {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.city-card-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  background: rgba(11, 15, 25, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.4rem;
  border: 1px solid var(--border-glass-subtle);
}

.meta-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.meta-col-lbl {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.meta-col-val {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-main);
}

.city-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.card-compare-btn {
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.card-compare-btn:hover {
  background: var(--accent-cyan);
  color: #0b0f19;
}

.card-compare-btn.active {
  background: var(--accent-orange);
  color: #fff;
  border-color: var(--accent-orange);
}

/* Skeletons */
.skeleton-grid {
  display: contents;
}

.skeleton-card {
  height: 200px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.04) 25%, rgba(255, 255, 255, 0.08) 50%, rgba(255, 255, 255, 0.04) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: var(--radius-lg);
}

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

/* -----------------------------
   10. Compare Drawer Modal
   ----------------------------- */
.compare-drawer {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
}

.compare-drawer.open {
  display: flex;
}

.compare-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
}

.compare-panel {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 1.5rem;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.85rem;
  overflow-y: auto;
  border-radius: var(--radius-xl);
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

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

.compare-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-bright);
}

.compare-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.compare-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-text-danger {
  background: none;
  border: none;
  color: var(--accent-rose);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.modal-close-btn {
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.compare-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.compare-column {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.compare-col-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-glass-subtle);
  padding-bottom: 0.6rem;
}

.compare-metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.compare-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

/* -----------------------------
   11. Toast Notifications
   ----------------------------- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass-bright);
  color: var(--text-main);
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: toastIn 0.3s ease forwards;
  pointer-events: auto;
}

@keyframes toastIn {
  from { transform: translateX(50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* -----------------------------
   12. Footer
   ----------------------------- */
.app-footer {
  background: rgba(11, 15, 25, 0.85);
  border-top: 1px solid var(--border-glass-subtle);
  padding: 1.5rem;
  margin-top: auto;
}

.footer-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.footer-api {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.footer-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-glass-input);
  border: 1px solid var(--border-glass-subtle);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.footer-badge.live-status {
  color: #34d399;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.pulse-green {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* -----------------------------
   13. Responsive Adjustments
   ----------------------------- */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

  .header-actions {
    justify-content: space-between;
  }

  .hero-card {
    padding: 1.25rem;
  }

  .hero-temp-number {
    font-size: 4rem;
  }

  .hero-city-name {
    font-size: 2rem;
  }
}