/* ============================================================
   SkyPulse — style.css
   Design: Glassmorphism · Dark & Light theme · Fully Responsive
   ============================================================ */

/* ── CUSTOM PROPERTIES (CSS Variables) ── */
:root {
  /* Brand accent */
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.35);
  --accent-2: #818cf8;

  /* Dark-theme defaults */
  --bg-base: #0b0f1a;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
  --text-primary: #f0f6ff;
  --text-secondary: rgba(200, 220, 255, 0.65);
  --input-bg: rgba(255,255,255,0.08);
  --chip-bg: rgba(255,255,255,0.05);
  --error-bg: rgba(255, 80, 80, 0.15);
  --error-border: rgba(255,100,100,0.35);
  --error-text: #ff8080;
  --history-bg: rgba(56,189,248,0.12);
  --history-hover: rgba(56,189,248,0.22);
  --footer-text: rgba(150,170,210,0.5);

  /* Font */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  /* Radius & spacing */
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
}

/* ── LIGHT THEME OVERRIDES ── */
[data-theme="light"] {
  --bg-base: #eef4fb;
  --accent: #0369a1;
  --accent-glow: rgba(3, 105, 161, 0.25);
  --glass-bg: rgba(255, 255, 255, 0.82);
  --glass-border: rgba(3, 105, 161, 0.14);
  --glass-shadow: 0 4px 28px rgba(3, 80, 150, 0.10);
  --text-primary: #0c1a2e;
  --text-secondary: #334e6e;
  --input-bg: rgba(255, 255, 255, 0.92);
  --chip-bg: rgba(240, 248, 255, 0.9);
  --error-bg: rgba(220, 38, 38, 0.07);
  --error-border: rgba(185, 28, 28, 0.3);
  --error-text: #b91c1c;
  --history-bg: rgba(3, 105, 161, 0.1);
  --history-hover: rgba(3, 105, 161, 0.2);
  --footer-text: #64748b;
}

/* Light mode background */
[data-theme="light"] .bg-layer {
  opacity: 1;
  background: radial-gradient(ellipse at 15% 20%, #bfdbfe 0%, transparent 50%),
              radial-gradient(ellipse at 85% 80%, #e0f2fe 0%, transparent 50%),
              #eef4fb;
}

/* Fix washed-out big temperature gradient in light mode */
[data-theme="light"] .temp-big {
  background: linear-gradient(135deg, #0c1a2e 20%, #0369a1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Labels clearly readable */
[data-theme="light"] .stat-label,
[data-theme="light"] .chip-label { color: #475569; }

/* Secondary text elements */
[data-theme="light"] .date-time,
[data-theme="light"] .feels-like,
[data-theme="light"] .temp-unit-big { color: #334e6e; }

[data-theme="light"] .brand-name { color: #0c1a2e; }
[data-theme="light"] .section-title { color: #334e6e; }

/* Forecast card text */
[data-theme="light"] .fc-day,
[data-theme="light"] .fc-condition,
[data-theme="light"] .fc-low { color: #475569; }
[data-theme="light"] .fc-high { color: #0c1a2e; }

/* Nav buttons */
[data-theme="light"] .unit-toggle,
[data-theme="light"] .theme-toggle,
[data-theme="light"] .geo-btn {
  background: rgba(255,255,255,0.85);
  border-color: rgba(3, 105, 161, 0.2);
  color: #0c1a2e;
}

/* Search */
[data-theme="light"] .search-bar {
  background: rgba(255,255,255,0.92);
  border-color: rgba(3, 105, 161, 0.2);
}
[data-theme="light"] .search-input { color: #0c1a2e; }
[data-theme="light"] .search-input::placeholder { color: #64748b; }
[data-theme="light"] .search-btn { background: #0369a1; color: #ffffff; }

/* Badges & tags */
[data-theme="light"] .history-tag { color: #0369a1; }
[data-theme="light"] .country-badge { background: #0369a1; color: #ffffff; }

/* ── CSS RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  overflow-y: scroll; /* always show scrollbar — prevents layout shift */
}

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;   /* allow full vertical scrolling */
  transition: background 0.5s ease, color 0.3s ease;
}

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

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ============================================================
   BACKGROUND LAYERS
   ============================================================ */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none; /* never intercept clicks or scroll */
  transition: background 1.2s ease;
  background: radial-gradient(ellipse at 20% 30%, #0f2444 0%, transparent 60%),
              radial-gradient(ellipse at 80% 70%, #1a1040 0%, transparent 60%),
              var(--bg-base);
}

/* Weather-specific bg overrides (applied via JS class on .bg-layer) */
.bg-layer.weather-clear {
  background: radial-gradient(ellipse at 30% 20%, #1c4a7c 0%, transparent 55%),
              radial-gradient(ellipse at 70% 80%, #0f3060 0%, transparent 55%),
              var(--bg-base);
}
.bg-layer.weather-clouds {
  background: radial-gradient(ellipse at 50% 50%, #1e2a3a 0%, transparent 70%),
              var(--bg-base);
}
.bg-layer.weather-rain, .bg-layer.weather-drizzle {
  background: radial-gradient(ellipse at 40% 30%, #0c1f30 0%, transparent 60%),
              radial-gradient(ellipse at 60% 70%, #112233 0%, transparent 60%),
              var(--bg-base);
}
.bg-layer.weather-snow {
  background: radial-gradient(ellipse at 50% 20%, #1a2a40 0%, transparent 60%),
              var(--bg-base);
}
.bg-layer.weather-thunderstorm {
  background: radial-gradient(ellipse at 30% 40%, #1a0a2e 0%, transparent 50%),
              radial-gradient(ellipse at 70% 60%, #0f0520 0%, transparent 50%),
              var(--bg-base);
}
.bg-layer.weather-mist, .bg-layer.weather-fog, .bg-layer.weather-haze {
  background: radial-gradient(ellipse at 50% 50%, #1a2028 0%, transparent 70%),
              var(--bg-base);
}


/* Floating particle canvas area */
.bg-particles {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.08;
  animation: floatUp var(--dur, 12s) linear infinite;
  animation-delay: var(--delay, 0s);
}
@keyframes floatUp {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 0.08; }
  90%  { opacity: 0.08; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ============================================================
   LOADING OVERLAY
   ============================================================ */
.loader-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  transition: opacity 0.4s ease;
}
.loader-overlay.hidden { opacity: 0; pointer-events: none; }

.loader-ring {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(56,189,248,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loader-text {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
}

/* ============================================================
   APP WRAPPER
   ============================================================ */
.app-wrapper {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 60px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── GLASSMORPHISM CARD BASE ── */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
}

/* ============================================================
   TOP NAV
   ============================================================ */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
}
.brand-icon { font-size: 1.6rem; filter: drop-shadow(0 0 10px var(--accent-glow)); }

.nav-controls { display: flex; gap: 12px; align-items: center; }

/* Unit Toggle Button */
.unit-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  backdrop-filter: blur(10px);
}
.unit-toggle:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  transform: scale(1.05);
}

/* Theme Toggle */
.theme-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  width: 42px; height: 42px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(10px);
}
.theme-toggle:hover { background: var(--glass-border); transform: rotate(20deg) scale(1.1); }

/* ============================================================
   SEARCH SECTION
   ============================================================ */
.search-section { margin-bottom: 24px; }

.search-wrap {
  display: flex;
  gap: 12px;
  align-items: stretch;
  flex-wrap: wrap;
}

.search-bar {
  flex: 1;
  min-width: 220px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 6px 8px 6px 18px;
  backdrop-filter: blur(12px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-icon { font-size: 1rem; opacity: 0.6; flex-shrink: 0; }

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
}
.search-input::placeholder { color: var(--text-secondary); }

.search-btn {
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  border-radius: var(--radius-pill);
  padding: 9px 22px;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  flex-shrink: 0;
  white-space: nowrap;
}
.search-btn:hover { opacity: 0.85; transform: scale(1.03); }
.search-btn:active { transform: scale(0.97); }

.geo-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
  backdrop-filter: blur(10px);
}
.geo-btn:hover { background: var(--glass-border); border-color: var(--accent); }

/* ── SEARCH HISTORY ── */
.history-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.history-tag {
  background: var(--history-bg);
  border: 1px solid rgba(56,189,248,0.25);
  color: var(--accent);
  font-size: 0.8rem;
  font-family: var(--font-display);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.2s;
  display: flex; align-items: center; gap: 6px;
}
.history-tag:hover { background: var(--history-hover); }
.history-tag .del-tag { opacity: 0.5; font-size: 0.75rem; }
.history-tag .del-tag:hover { opacity: 1; color: #ff6060; }

/* ============================================================
   ERROR BANNER
   ============================================================ */
.error-banner {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-bottom: 16px;
  animation: slideIn 0.3s ease;
}

/* ============================================================
   MAIN CONTENT ANIMATIONS
   ============================================================ */
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.main-content { animation: fadeUp 0.5s ease; }

/* ============================================================
   CURRENT WEATHER CARD
   ============================================================ */
.current-card {
  display: flex;
  gap: 30px;
  padding: 36px 40px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: flex-start;
}

/* Left Column */
.current-left { flex: 1; min-width: 220px; }

.city-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.city-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
}
.country-badge {
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
}

.date-time {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.condition-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Animated Icon Wrapper */
.animated-icon {
  animation: iconBob 3.5s ease-in-out infinite;
}
@keyframes iconBob {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.weather-icon-img {
  width: 80px;
  height: 80px;
  filter: drop-shadow(0 4px 16px var(--accent-glow));
}

.condition-label {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: capitalize;
  color: var(--text-primary);
}
.feels-like {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Right Column */
.current-right { flex: 1; min-width: 220px; }

.temp-display {
  display: flex;
  align-items: flex-start;
  line-height: 1;
  margin-bottom: 28px;
}
.temp-big {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 900;
  background: linear-gradient(135deg, #fff 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 0.9;
}
.temp-unit-big {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: 8px;
  margin-left: 4px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--chip-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: transform 0.2s, border-color 0.2s;
}
.stat-item:hover { transform: translateY(-2px); border-color: var(--accent); }
.stat-icon { font-size: 1.1rem; }
.stat-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   DETAILS ROW (chips)
   ============================================================ */
.details-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.detail-chip {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  transition: transform 0.2s, border-color 0.2s;
}
.detail-chip:hover { transform: translateY(-3px); border-color: var(--accent); }

.chip-icon { font-size: 1.5rem; flex-shrink: 0; }
.chip-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 2px;
}
.chip-value {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   5-DAY FORECAST SECTION
   ============================================================ */
.forecast-section { margin-bottom: 20px; }

.section-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.forecast-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.forecast-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 18px 14px;
  text-align: center;
  backdrop-filter: blur(16px);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  cursor: default;
  animation: fadeUp 0.5s ease both;
}
.forecast-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px var(--accent-glow);
}
.forecast-card:nth-child(1) { animation-delay: 0.05s; }
.forecast-card:nth-child(2) { animation-delay: 0.10s; }
.forecast-card:nth-child(3) { animation-delay: 0.15s; }
.forecast-card:nth-child(4) { animation-delay: 0.20s; }
.forecast-card:nth-child(5) { animation-delay: 0.25s; }

.fc-day {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.fc-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 10px;
  animation: iconBob 4s ease-in-out infinite;
}
.fc-condition {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: capitalize;
  min-height: 2em;
}
.fc-temps {
  display: flex;
  justify-content: center;
  gap: 8px;
  align-items: baseline;
}
.fc-high {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.fc-low {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* ============================================================
   FOOTER
   ============================================================ */
.app-footer {
  margin-top: auto;
  padding-top: 30px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--footer-text);
  letter-spacing: 0.04em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet: 5-col forecast → 3 */
@media (max-width: 860px) {
  .forecast-grid { grid-template-columns: repeat(3, 1fr); }
  .forecast-card:nth-child(4),
  .forecast-card:nth-child(5) { display: none; }

  /* We keep them but show all 5 on wider tablets */
  .current-card { padding: 28px 24px; }
}

@media (max-width: 700px) {
  .forecast-grid { grid-template-columns: repeat(5, minmax(110px, 1fr)); overflow-x: auto; }
  .forecast-card { display: flex; flex-direction: column; }
  /* Re-show all 5 with horizontal scroll */
  .forecast-card:nth-child(4),
  .forecast-card:nth-child(5) { display: flex; }

  .current-card { flex-direction: column; }
  .current-right { width: 100%; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }

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

@media (max-width: 520px) {
  .app-wrapper { padding: 0 14px 50px; }
  .top-nav { padding: 16px 0 12px; }
  .brand-name { font-size: 1.1rem; }

  .search-wrap { flex-direction: column; }
  .geo-btn { width: 100%; justify-content: center; }

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

  .current-card { padding: 20px 16px; }
  .temp-big { font-size: 5rem; }
}

@media (max-width: 360px) {
  .details-row { grid-template-columns: 1fr 1fr; }
  .forecast-grid { grid-template-columns: repeat(5, 130px); }
}

/* ============================================================
   MISC UTILITIES
   ============================================================ */

/* Pulse glow for accent elements */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 8px var(--accent-glow); }
  50%       { box-shadow: 0 0 24px var(--accent-glow); }
}
.search-btn { animation: pulseGlow 2.5s ease-in-out infinite; }

/* Smooth theme transitions */
.glass-card, .detail-chip, .forecast-card, .stat-item,
.search-bar, .unit-toggle, .theme-toggle, .geo-btn {
  transition: background 0.4s, border-color 0.3s, transform 0.2s, box-shadow 0.3s;
}