/* ===== VARIABLES ===== */
:root {
  --bg: #0f1023;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text: #eaeaff;
  --text-secondary: #8b8bb5;
  --text-muted: #5a5a80;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.14);
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg: #f0f2f8;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.9);
  --text: #1a1a2e;
  --text-secondary: #555580;
  --text-muted: #8888a8;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.5s, color 0.5s;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: white;
}

/* ===== APP LAYOUT ===== */
.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  position: relative;
  min-height: 100vh;
}

/* ===== ANIMATED BACKGROUND ===== */
.weather-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  transition: opacity 1s;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  transition: all 2s ease;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: #6366f1;
  top: -100px;
  right: -100px;
  animation: orbFloat1 15s ease-in-out infinite;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: #06b6d4;
  bottom: -50px;
  left: -80px;
  animation: orbFloat2 18s ease-in-out infinite;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: #a855f7;
  top: 40%;
  left: 50%;
  animation: orbFloat3 12s ease-in-out infinite;
}

/* Weather-specific bg themes */
.weather-bg.sunny .orb-1 { background: #f59e0b; }
.weather-bg.sunny .orb-2 { background: #ef4444; }
.weather-bg.sunny .orb-3 { background: #f97316; }

.weather-bg.rainy .orb-1 { background: #3b82f6; }
.weather-bg.rainy .orb-2 { background: #6366f1; }
.weather-bg.rainy .orb-3 { background: #1e40af; }

.weather-bg.cloudy .orb-1 { background: #64748b; }
.weather-bg.cloudy .orb-2 { background: #94a3b8; }
.weather-bg.cloudy .orb-3 { background: #475569; }

.weather-bg.snowy .orb-1 { background: #e0e7ff; }
.weather-bg.snowy .orb-2 { background: #c7d2fe; }
.weather-bg.snowy .orb-3 { background: #a5b4fc; }

.weather-bg.stormy .orb-1 { background: #4338ca; }
.weather-bg.stormy .orb-2 { background: #1e1b4b; }
.weather-bg.stormy .orb-3 { background: #7c3aed; }

.weather-bg.night .orb-1 { background: #312e81; }
.weather-bg.night .orb-2 { background: #1e1b4b; }
.weather-bg.night .orb-3 { background: #4c1d95; }

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-40px, 60px) scale(1.1); }
  66% { transform: translate(30px, -30px) scale(0.95); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, -40px) scale(1.05); }
  66% { transform: translate(-30px, 30px) scale(0.9); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(-50%, 0) scale(1); }
  50% { transform: translate(-50%, -50px) scale(1.15); }
}

[data-theme="light"] .bg-orb { opacity: 0.15; }

/* ===== HEADER ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo i {
  color: var(--accent);
  font-size: 1.5rem;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.btn-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* ===== SEARCH ===== */
.search-wrapper {
  margin-bottom: 32px;
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 6px 4px 18px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-icon {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-right: 12px;
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  padding: 12px 0;
}

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

.search-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  border: none;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.search-btn:hover {
  background: #4f46e5;
  transform: scale(1.05);
}

/* ===== STATES ===== */
.welcome, .loading, .error-state {
  text-align: center;
  padding: 80px 20px;
}

.welcome-icon {
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: 20px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.welcome h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.welcome p, .loading p {
  color: var(--text-secondary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.8s linear infinite;
}

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

.error-state i {
  font-size: 3rem;
  color: #ef4444;
  margin-bottom: 16px;
}

.error-state p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ===== CURRENT WEATHER ===== */
.current-weather {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
  animation: slideUp 0.6s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.location-info h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 2px;
}

.date-time {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.temp-display {
  display: flex;
  align-items: flex-start;
  margin-bottom: 8px;
}

.temp-value {
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -3px;
}

.temp-unit {
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: 8px;
  margin-left: 4px;
}

.weather-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  text-transform: capitalize;
  margin-bottom: 12px;
}

.temp-range {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.temp-range i {
  margin-right: 2px;
}

.temp-range .fa-arrow-up { color: #ef4444; }
.temp-range .fa-arrow-down { color: #3b82f6; }

.weather-icon-large {
  font-size: 7rem;
  opacity: 0.9;
  animation: float 4s ease-in-out infinite;
}

/* Weather icon colors */
.weather-icon-large.sunny { color: #fbbf24; text-shadow: 0 0 40px rgba(251, 191, 36, 0.4); }
.weather-icon-large.cloudy { color: #94a3b8; }
.weather-icon-large.rainy { color: #60a5fa; text-shadow: 0 0 30px rgba(96, 165, 250, 0.3); }
.weather-icon-large.snowy { color: #e0e7ff; text-shadow: 0 0 30px rgba(224, 231, 255, 0.4); }
.weather-icon-large.stormy { color: #a78bfa; text-shadow: 0 0 30px rgba(167, 139, 250, 0.4); }
.weather-icon-large.misty { color: #cbd5e1; }

/* ===== DETAILS GRID ===== */
.details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  animation: slideUp 0.6s ease backwards;
}

.detail-card:nth-child(1) { animation-delay: 0.05s; }
.detail-card:nth-child(2) { animation-delay: 0.1s; }
.detail-card:nth-child(3) { animation-delay: 0.15s; }
.detail-card:nth-child(4) { animation-delay: 0.2s; }
.detail-card:nth-child(5) { animation-delay: 0.25s; }
.detail-card:nth-child(6) { animation-delay: 0.3s; }

.detail-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.detail-value {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
}

.detail-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== FORECAST ===== */
.forecast-section, .hourly-section {
  margin-bottom: 20px;
  animation: slideUp 0.6s ease 0.3s backwards;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.section-title i {
  color: var(--accent);
}

.forecast-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.forecast-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.forecast-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.forecast-day {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-secondary);
}

.forecast-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.forecast-temp {
  font-size: 1.1rem;
  font-weight: 700;
}

.forecast-temp-min {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.forecast-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: capitalize;
  margin-top: 6px;
}

/* ===== HOURLY ===== */
.hourly-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.hourly-scroll::-webkit-scrollbar {
  height: 4px;
}

.hourly-scroll::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 4px;
}

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

.hourly-card {
  min-width: 90px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
  transition: var(--transition);
  scroll-snap-align: start;
  flex-shrink: 0;
}

.hourly-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.hourly-time {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}

.hourly-icon {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.hourly-temp {
  font-size: 0.95rem;
  font-weight: 700;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 32px 0 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.footer a:hover {
  text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .current-weather {
    flex-direction: column;
    text-align: center;
    padding: 28px 24px;
  }

  .current-right {
    margin-top: 16px;
  }

  .weather-icon-large {
    font-size: 5rem;
  }

  .temp-value {
    font-size: 3.5rem;
  }

  .temp-range {
    justify-content: center;
  }

  .details-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .forecast-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
  }

  .forecast-card {
    padding: 14px 8px;
  }
}

@media (max-width: 480px) {
  .app {
    padding: 16px;
  }

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

  .forecast-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .location-info h1 {
    font-size: 1.4rem;
  }

  .temp-value {
    font-size: 3rem;
  }
}