/* ==========================================================================
   CLIMA & FUSO — styles.css
   Premium glassmorphism weather + timezone converter UI
   ========================================================================== */

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

:root {
  /* ---- Ice Silver (default) ---- */
  --bg-1: #edf2fb;
  --bg-2: #dae6f6;
  --bg-3: #e6f0fb;
  --accent: #4a7cf0;
  --accent-glow: rgba(74, 124, 240, .22);
  --accent-2: #3b63d4;
  --accent-surface: rgba(74, 124, 240, .08);
  --glass-bg: rgba(255, 255, 255, .30);
  --glass-border: rgba(255, 255, 255, .78);
  --glass-highlight: rgba(255, 255, 255, .55);
  --card-shadow: 0 4px 28px rgba(0, 50, 120, .07), 0 1px 4px rgba(0, 50, 120, .04);
  --text-primary: #0e1c2e;
  --text-secondary: rgba(14, 28, 46, .58);
  --text-tertiary: rgba(14, 28, 46, .36);
  --star-opacity: 0.75;
  --rain-opacity: 0;
  --gradient-sunset:
    radial-gradient(ellipse 75% 60% at 10% 8%,  rgba(255,255,255,.97) 0%, transparent 55%),
    radial-gradient(ellipse 55% 50% at 90% 92%, rgba(190,218,255,.62) 0%, transparent 52%),
    radial-gradient(ellipse 100% 55% at 50% 110%, rgba(208,232,255,.38) 0%, transparent 60%),
    linear-gradient(150deg, #f0f7ff 0%, #dae6f8 38%, #ccddf6 65%, #e4f0fd 100%);

  /* ---- Shared tokens ---- */
  --font-primary: 'Inter', 'Poppins', system-ui, -apple-system, sans-serif;
  --font-display: 'Poppins', 'Inter', system-ui, sans-serif;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition-fast: .2s cubic-bezier(.4,0,.2,1);
  --transition-med: .4s cubic-bezier(.4,0,.2,1);
  --transition-slow: .6s cubic-bezier(.4,0,.2,1);
  --max-width: 1100px;
}

/* ---- Ice Gold theme ---- */
[data-theme="nebula"] {
  --bg-1: #fdf7ed;
  --bg-2: #faebd4;
  --bg-3: #fef2e2;
  --accent: #d97706;
  --accent-glow: rgba(217, 119, 6, .22);
  --accent-2: #b45309;
  --accent-surface: rgba(217, 119, 6, .08);
  --glass-bg: rgba(255, 255, 255, .30);
  --glass-border: rgba(255, 255, 255, .78);
  --glass-highlight: rgba(255, 255, 255, .55);
  --card-shadow: 0 4px 28px rgba(80, 40, 0, .07), 0 1px 4px rgba(80, 40, 0, .04);
  --text-primary: #1c0e00;
  --text-secondary: rgba(28, 14, 0, .55);
  --text-tertiary: rgba(28, 14, 0, .33);
  --gradient-sunset:
    radial-gradient(ellipse 75% 60% at 10% 8%,  rgba(255,255,255,.97) 0%, transparent 55%),
    radial-gradient(ellipse 55% 50% at 90% 92%, rgba(255,218,160,.62) 0%, transparent 52%),
    radial-gradient(ellipse 100% 55% at 50% 110%, rgba(255,230,190,.38) 0%, transparent 60%),
    linear-gradient(150deg, #fff9f0 0%, #faebd4 38%, #f5dfc0 65%, #faf2e4 100%);
}

/* ---- Day mode overrides (brighter ice) ---- */
[data-mode="day"] {
  --glass-bg: rgba(255, 255, 255, .40);
  --star-opacity: 0.35;
}

[data-theme="nebula"][data-mode="day"] {
  --glass-bg: rgba(255, 255, 255, .40);
  --star-opacity: 0.35;
}

/* ---- Night mode overrides (dark) ---- */
[data-mode="night"] {
  --bg-1: #0a1628;
  --bg-2: #0d2137;
  --bg-3: #071a2b;
  --glass-bg: rgba(15, 35, 60, .55);
  --glass-border: rgba(255, 255, 255, .08);
  --glass-highlight: rgba(255, 255, 255, .04);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, .35);
  --text-primary: #f0f6fc;
  --text-secondary: rgba(240, 246, 252, .6);
  --text-tertiary: rgba(240, 246, 252, .35);
  --star-opacity: 1;
  --gradient-sunset: linear-gradient(135deg, #0a1628 0%, #0d2137 50%, #071a2b 100%);
}

[data-theme="nebula"][data-mode="night"] {
  --bg-1: #13072a;
  --bg-2: #1e0a3e;
  --bg-3: #0f0620;
  --glass-bg: rgba(30, 15, 60, .55);
  --glass-border: rgba(255, 255, 255, .08);
  --glass-highlight: rgba(255, 255, 255, .04);
  --text-primary: #f5f0ff;
  --text-secondary: rgba(245, 240, 255, .6);
  --text-tertiary: rgba(245, 240, 255, .35);
  --accent: #c084fc;
  --accent-glow: rgba(192, 132, 252, .25);
  --star-opacity: 1;
  --gradient-sunset: linear-gradient(135deg, #13072a 0%, #1e0a3e 50%, #0f0620 100%);
}

/* ---- Rain condition ---- */
[data-condition="rain"] {
  --rain-opacity: 1;
  --star-opacity: 0.1;
}

[data-condition="cloudy"] {
  --star-opacity: 0.2;
}

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

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- BACKGROUND LAYERS ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow), background var(--transition-slow);
}

.bg-base {
  background: var(--gradient-sunset);
}

/* Stars using radial gradients */
.bg-stars {
  opacity: var(--star-opacity);
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, rgba(148,192,255,.50) 50%, transparent 100%),
    radial-gradient(2px 2px at 25% 35%,   rgba(130,180,255,.38) 50%, transparent 100%),
    radial-gradient(1px 1px at 40% 15%,   rgba(160,200,255,.30) 50%, transparent 100%),
    radial-gradient(2px 2px at 55% 45%,   rgba(148,192,255,.45) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 70% 25%, rgba(120,170,255,.28) 50%, transparent 100%),
    radial-gradient(2.5px 2.5px at 85% 10%, rgba(155,200,255,.52) 50%, transparent 100%),
    radial-gradient(1px 1px at 15% 60%,   rgba(140,185,255,.25) 50%, transparent 100%),
    radial-gradient(2px 2px at 30% 75%,   rgba(148,192,255,.40) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 50% 85%, rgba(130,178,255,.30) 50%, transparent 100%),
    radial-gradient(2px 2px at 65% 55%,   rgba(148,192,255,.35) 50%, transparent 100%),
    radial-gradient(1px 1px at 80% 70%,   rgba(155,200,255,.45) 50%, transparent 100%),
    radial-gradient(2px 2px at 95% 40%,   rgba(130,180,255,.28) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 5% 90%, rgba(148,192,255,.38) 50%, transparent 100%),
    radial-gradient(2.5px 2.5px at 20% 50%, rgba(120,168,255,.25) 50%, transparent 100%),
    radial-gradient(1px 1px at 45% 65%,   rgba(148,192,255,.32) 50%, transparent 100%),
    radial-gradient(2px 2px at 60% 80%,   rgba(140,185,255,.28) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 75% 95%, rgba(155,200,255,.48) 50%, transparent 100%),
    radial-gradient(1px 1px at 90% 60%,   rgba(130,178,255,.22) 50%, transparent 100%),
    radial-gradient(2.5px 2.5px at 35% 5%, rgba(148,192,255,.55) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 8% 42%, rgba(140,185,255,.32) 50%, transparent 100%),
    radial-gradient(2px 2px at 52% 28%,   rgba(148,192,255,.40) 50%, transparent 100%),
    radial-gradient(1px 1px at 78% 48%,   rgba(130,178,255,.28) 50%, transparent 100%),
    radial-gradient(2px 2px at 92% 82%,   rgba(155,200,255,.45) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 18% 88%, rgba(140,185,255,.22) 50%, transparent 100%),
    radial-gradient(2px 2px at 42% 38%,   rgba(148,192,255,.35) 50%, transparent 100%),
    radial-gradient(1px 1px at 68% 12%,   rgba(130,180,255,.38) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 3% 72%, rgba(148,192,255,.28) 50%, transparent 100%),
    radial-gradient(2.5px 2.5px at 88% 32%, rgba(155,200,255,.52) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 33% 92%, rgba(140,185,255,.32) 50%, transparent 100%),
    radial-gradient(1px 1px at 58% 7%,    rgba(148,192,255,.40) 50%, transparent 100%);
  animation: starsTwinkle 6s ease-in-out infinite alternate;
}

@keyframes starsTwinkle {
  0%   { opacity: var(--star-opacity); }
  50%  { opacity: calc(var(--star-opacity) * 0.6); }
  100% { opacity: var(--star-opacity); }
}

/* Rain drops */
.bg-rain {
  opacity: var(--rain-opacity);
  overflow: hidden;
}

.rain-drop {
  position: absolute;
  width: 1.5px;
  height: 20px;
  background: linear-gradient(to bottom, transparent, rgba(74, 124, 240, .18));
  border-radius: 0 0 2px 2px;
  animation: rainFall var(--duration) linear infinite;
  animation-delay: var(--delay);
  left: calc(var(--i) * 3.33% + 1%);
  --duration: 0.8s;
  --delay: calc(var(--i) * 0.07s);
}

.rain-drop:nth-child(odd) {
  height: 28px;
  --duration: 0.65s;
  opacity: .7;
}

.rain-drop:nth-child(3n) {
  left: calc(var(--i) * 3.33% + 2%);
  --duration: 0.9s;
  height: 15px;
}

@keyframes rainFall {
  0%   { transform: translateY(-30px); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(100vh); opacity: 0; }
}

/* ---------- APP CONTAINER ---------- */
.app-container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 40px;
  min-height: 100vh;
}

/* ---------- UTILITY ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ---------- GLASS CARD ---------- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: var(--card-shadow), inset 0 1px 0 var(--glass-highlight);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
  transform: scale(1.015);
  box-shadow: var(--card-shadow), 0 0 40px var(--accent-glow), inset 0 1px 0 var(--glass-highlight);
}

.glass-card-inner {
  background: rgba(255, 255, 255, .38);
  border: 1px solid rgba(255, 255, 255, .68);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.glass-input {
  background: rgba(255, 255, 255, .45);
  border: 1px solid rgba(255, 255, 255, .75);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: .95rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  width: 100%;
}

.glass-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(255, 255, 255, .60);
}

.glass-input::placeholder {
  color: var(--text-tertiary);
}

.glass-input:disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* ---------- A) HEADER ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(0, 50, 120, .08);
}

.header-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: .12em;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.header-subtitle {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .25em;
  color: var(--accent);
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-surface);
  border: 1px solid rgba(255, 255, 255, .68);
  font-size: .72rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: .03em;
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .4; transform: scale(.8); }
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, .70);
  background: rgba(255, 255, 255, .35);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover, .icon-btn:focus-visible {
  background: var(--accent-surface);
  color: var(--accent);
  border-color: var(--accent);
  outline: none;
}

.mode-toggle {
  display: inline-flex;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .70);
  background: rgba(255, 255, 255, .28);
}

.mode-btn {
  padding: 6px 12px;
  font-size: .7rem;
  font-weight: 600;
  font-family: var(--font-primary);
  letter-spacing: .04em;
  color: var(--text-tertiary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn.active {
  background: var(--accent-surface);
  color: var(--accent);
}

.mode-btn:hover {
  color: var(--text-primary);
}

.mode-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

/* ---------- B) WEATHER SECTION ---------- */
.weather-section {
  margin-bottom: 32px;
}

.weather-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.weather-card {
  padding: 28px 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.weather-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.weather-card__label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}

.weather-card__city {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
}

.weather-card__now-badge {
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .15em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
}

.weather-card__main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.weather-card__temp-wrap {
  display: flex;
  align-items: flex-start;
}

.weather-card__temp {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  transition: opacity var(--transition-fast);
}

.weather-card__deg {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 300;
  margin-top: .3em;
  color: var(--text-secondary);
}

.weather-card__icon {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-med), opacity var(--transition-fast);
}

.weather-card__icon svg {
  width: 100%;
  height: 100%;
}

.weather-card__condition {
  font-size: .85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.weather-card__details {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 100px;
}

.detail-icon {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.detail-label {
  display: block;
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.detail-value {
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.weather-card__forecast {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}

.forecast-mini {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-fast);
}

.forecast-mini:hover {
  transform: translateY(-2px);
}

.forecast-mini__label {
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--accent);
}

.forecast-mini__temps {
  display: flex;
  gap: 14px;
}

.forecast-mini__min,
.forecast-mini__max {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .82rem;
  font-weight: 700;
}

.forecast-mini__min {
  color: var(--text-secondary);
}

.forecast-mini__min svg {
  stroke: #60a5fa;
}

.forecast-mini__max svg {
  stroke: #f97316;
}

/* --- Compact weather cards (secondary feature) --- */
.weather-card--compact {
  padding: 20px 18px 16px;
  gap: 12px;
}

.weather-card--compact .weather-card__temp {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
}

.weather-card--compact .weather-card__deg {
  font-size: clamp(1rem, 2vw, 1.4rem);
}

.weather-card--compact .weather-card__icon {
  width: 60px;
  height: 60px;
}

.weather-card--compact .weather-card__city {
  font-size: 1.1rem;
}

.weather-card--compact .weather-card__condition {
  font-size: .8rem;
}

.weather-card--compact .detail-value {
  font-size: .8rem;
}

.weather-card--compact .forecast-mini {
  padding: 10px 12px;
}

/* ---------- SECTION TITLE ---------- */
.section-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .08em;
  margin-bottom: 18px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  border-radius: 2px;
  background: var(--accent);
}

/* Hero section title — bigger for the converter */
.section-title--hero {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  font-weight: 800;
  letter-spacing: .1em;
  margin-bottom: 24px;
}

.section-title--hero::before {
  width: 5px;
  height: 26px;
}

/* ---------- CONVERTER (HERO PRIMARY) ---------- */
.converter-section {
  margin-bottom: 40px;
}

.converter-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: start;
}

.converter-panel {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Hero converter panel — more padding and presence */
.converter-panel--hero {
  padding: 28px 24px;
  gap: 16px;
}

.converter-label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--accent);
  text-transform: uppercase;
}

.converter-city-wrap {
  position: relative;
}

.converter-city-input {
  font-size: 1rem;
  font-weight: 600;
}

.converter-time-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.time-mode-toggle {
  display: inline-flex;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .70);
  background: rgba(255, 255, 255, .28);
  flex-shrink: 0;
}

.time-mode-btn {
  padding: 6px 12px;
  font-size: .7rem;
  font-weight: 600;
  font-family: var(--font-primary);
  letter-spacing: .04em;
  color: var(--text-tertiary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.time-mode-btn.active {
  background: var(--accent-surface);
  color: var(--accent);
}

.time-mode-btn:hover {
  color: var(--text-primary);
}

.time-mode-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.time-input {
  max-width: 120px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color-scheme: light;
}

.converter-diff-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .04em;
}

/* Hero diff badge — larger and more prominent */
.converter-diff-badge--hero {
  padding: 8px 22px;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: .06em;
  box-shadow: 0 0 20px var(--accent-glow);
}

.converter-display {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-top: 4px;
}

/* Hero converter display — giant time */
.converter-display--hero {
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
}

.converter-display__time {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 900;
  line-height: 1;
  transition: opacity var(--transition-fast);
}

/* Hero time — huge like a clock */
.converter-display__time--hero {
  font-size: clamp(3.2rem, 8vw, 5rem);
  letter-spacing: -.02em;
}

.converter-display__tz {
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Swap button */
.swap-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 60px;
}

.swap-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--accent-surface);
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.swap-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transform: scale(0);
  transition: all .35s cubic-bezier(.4,0,.2,1);
}

.swap-btn:hover, .swap-btn:focus-visible {
  background: var(--accent);
  color: #fff;
  transform: rotate(180deg) scale(1.1);
  box-shadow: 0 0 24px var(--accent-glow);
  outline: none;
}

.swap-btn:active {
  transform: rotate(180deg) scale(.95);
}

.swap-btn svg {
  position: relative;
  z-index: 1;
}

/* Hero swap button — larger */
.swap-btn--hero {
  width: 58px;
  height: 58px;
}

.swap-btn--hero svg {
  width: 26px;
  height: 26px;
}

/* Autocomplete dropdown */
.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: rgba(236, 245, 255, .97);
  border: 1px solid rgba(255, 255, 255, .85);
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 12px 40px rgba(0, 50, 120, .12);
  max-height: 240px;
  overflow-y: auto;
  z-index: 100;
  display: none;
}

[data-theme="nebula"] .autocomplete-dropdown {
  background: rgba(255, 248, 236, .97);
  box-shadow: 0 12px 40px rgba(80, 40, 0, .12);
}

.autocomplete-dropdown.active {
  display: block;
  animation: dropdownIn .2s ease-out;
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.autocomplete-item {
  padding: 10px 16px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: background var(--transition-fast);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(0, 50, 120, .06);
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.highlighted {
  background: var(--accent-surface);
}

.autocomplete-item__tz {
  font-size: .7rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

/* ---------- TIMELINE ---------- */
.timeline-section {
  padding: 24px;
  margin-top: 20px;
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.timeline-title {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--accent);
  text-transform: uppercase;
}

.timeline-desc {
  font-size: .82rem;
  color: var(--text-secondary);
}

.timeline-desc strong {
  color: var(--text-primary);
  font-weight: 700;
}

.timeline-slider-wrap {
  position: relative;
  padding: 10px 0 20px;
}

.timeline-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(0, 50, 120, .08);
  outline: none;
  cursor: pointer;
  position: relative;
  z-index: 2;
}

.timeline-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-1);
  box-shadow: 0 0 10px var(--accent-glow);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-1);
  box-shadow: 0 0 10px var(--accent-glow);
  cursor: pointer;
}

.timeline-slider:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 3px;
}

.timeline-ticks {
  position: absolute;
  top: 14px;
  left: 0;
  right: 0;
  height: 10px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  z-index: 1;
}

.timeline-tick {
  width: 1px;
  height: 6px;
  background: rgba(0, 50, 120, .14);
  border-radius: 1px;
}

.timeline-tick.major {
  height: 10px;
  background: rgba(0, 50, 120, .28);
}

.timeline-labels {
  display: flex;
  justify-content: space-between;
  font-size: .65rem;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-top: 4px;
}

/* ---------- E) SHARE ---------- */
.share-section {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  cursor: pointer;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .04em;
  transition: all var(--transition-fast);
}

.share-btn:hover {
  box-shadow: 0 0 30px var(--accent-glow);
  border-color: var(--accent);
}

.share-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.share-btn:active {
  transform: scale(.96);
}

/* ---------- FOOTER ---------- */
.app-footer {
  text-align: center;
  padding: 16px 0 0;
  border-top: 1px solid rgba(0, 50, 120, .07);
  font-size: .72rem;
  color: var(--text-tertiary);
}

/* ---------- TOAST ---------- */
.toast-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  padding: 14px 22px;
  border-radius: var(--radius-md);
  background: rgba(236, 245, 255, .97);
  border: 1px solid rgba(255, 255, 255, .85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 50, 120, .10);
  color: var(--text-primary);
  font-size: .85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: all;
  animation: toastIn .35s cubic-bezier(.4,0,.2,1);
  max-width: 360px;
}

[data-theme="nebula"] .toast {
  background: rgba(255, 248, 236, .97);
  box-shadow: 0 8px 32px rgba(80, 40, 0, .10);
}

.toast.toast--success {
  border-color: var(--accent);
}

.toast.toast--error {
  border-color: #ef4444;
}

.toast.toast--exit {
  animation: toastOut .3s ease-in forwards;
}

.toast__icon {
  flex-shrink: 0;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px) scale(.9); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(40px) scale(.9); }
}

/* ---------- SKELETON ---------- */
.skeleton-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(200, 220, 255, .35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-med);
}

.skeleton-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.skeleton-card {
  padding: 32px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skeleton-line {
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(0,50,120,.04) 25%, rgba(0,50,120,.10) 50%, rgba(0,50,120,.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.skeleton-line--title { width: 60%; height: 14px; }
.skeleton-line--big   { width: 40%; height: 48px; }
.skeleton-line--medium{ width: 80%; height: 12px; }
.skeleton-line--small { width: 50%; height: 10px; }

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

/* ---------- ANIMATIONS ---------- */
.anim-entry {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeSlideUp .7s cubic-bezier(.4,0,.2,1) forwards;
}

.anim-delay-1 { animation-delay: .15s; }
.anim-delay-2 { animation-delay: .3s; }
.anim-delay-3 { animation-delay: .45s; }

@keyframes fadeSlideUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Swap animation helpers */
.swap-fade-out {
  animation: swapFadeOut .25s ease-in forwards;
}

.swap-fade-in {
  animation: swapFadeIn .25s ease-out forwards;
}

@keyframes swapFadeOut {
  to { opacity: 0; transform: scale(.95); }
}

@keyframes swapFadeIn {
  from { opacity: 0; transform: scale(.95); }
  to   { opacity: 1; transform: scale(1); }
}

/* Temp count-up flash */
.temp-flash {
  animation: tempPulse .4s ease-out;
}

@keyframes tempPulse {
  0%   { text-shadow: 0 0 0 transparent; }
  50%  { text-shadow: 0 0 30px var(--accent-glow); }
  100% { text-shadow: 0 0 0 transparent; }
}

/* Icon slide */
.icon-slide-in {
  animation: iconSlide .4s ease-out;
}

@keyframes iconSlide {
  from { opacity: 0; transform: translateX(20px) scale(.8); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .app-container {
    padding: 16px 14px 32px;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .header-right {
    width: 100%;
    justify-content: flex-start;
    gap: 8px;
  }

  .status-chip {
    padding: 5px 10px;
    font-size: 0.66rem;
  }

  .mode-btn {
    padding: 6px 10px;
  }

  .weather-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .converter-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .swap-wrap {
    padding: 0;
    justify-content: center;
  }

  .swap-btn {
    transform: rotate(90deg);
  }

  .swap-btn:hover, .swap-btn:focus-visible {
    transform: rotate(270deg) scale(1.1);
  }

  .weather-card__details {
    flex-direction: column;
    gap: 10px;
  }

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .toast-container {
    bottom: 16px;
    right: 16px;
    left: 16px;
  }

  .toast {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .header-right {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    width: 100%;
    gap: 6px;
  }

  .status-chip {
    grid-column: auto;
    grid-row: auto;
    justify-self: auto;
    max-width: none;
    flex: 0 1 auto;
    min-width: 0;
    padding: 4px 8px;
    font-size: 0.62rem;
  }

  .status-dot {
    width: 5px;
    height: 5px;
  }

  .theme-toggle-btn {
    order: 3;
  }

  .mode-toggle {
    order: 2;
    flex: 1 1 auto;
    min-width: 0;
  }

  .theme-toggle-btn {
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
  }

  .weather-card {
    padding: 20px 16px 16px;
  }

  .weather-card--compact {
    padding: 16px 14px 12px;
  }

  .converter-panel {
    padding: 18px 16px;
  }

  .converter-panel--hero {
    padding: 20px 16px;
  }

  .converter-display__time--hero {
    font-size: clamp(2.6rem, 12vw, 3.5rem);
  }

  .weather-card__forecast {
    grid-template-columns: 1fr;
  }

  .mode-btn {
    padding: 6px 7px;
    font-size: 0.62rem;
  }
}

/* ---------- PREFERS REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .bg-stars { animation: none; }
  .rain-drop { animation: none; display: none; }
  .anim-entry { opacity: 1; transform: none; }
  .glass-card:hover { transform: none; }
  .swap-btn:hover { transform: none; }
  .forecast-mini:hover { transform: none; }
}

/* ---------- SCROLLBAR ---------- */
.autocomplete-dropdown::-webkit-scrollbar {
  width: 6px;
}

.autocomplete-dropdown::-webkit-scrollbar-track {
  background: transparent;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, .12);
  border-radius: 3px;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, .2);
}

/* ---------- EDITORIAL / NAV ---------- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  margin-bottom: 20px;
}

.site-nav__brand {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.04em;
}

.site-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-nav__links a,
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.site-nav__links a:hover,
.footer-links a:hover {
  color: var(--accent);
  transform: translateY(-1px);
}

.eyebrow,
.section-kicker,
.insight-card__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-copy {
  margin-top: 14px;
  max-width: 62ch;
  color: var(--text-secondary);
  line-height: 1.7;
}

.insight-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 18px 0 28px;
}

.insight-card,
.editorial-section,
.static-page__panel {
  padding: 22px;
}

.insight-card h2,
.prose-card h3,
.use-case-card h3,
.faq-item h3,
.static-page__panel h2 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 10px 0;
}

.insight-card p,
.prose-card p,
.use-case-card p,
.faq-item p,
.long-copy p,
.static-page__panel p,
.static-page__panel li {
  color: var(--text-secondary);
  line-height: 1.75;
}

.editorial-section {
  margin: 26px 0;
}

.section-head {
  margin-bottom: 18px;
}

.prose-grid,
.use-case-grid {
  display: grid;
  gap: 16px;
}

.prose-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.use-case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.prose-card,
.use-case-card,
.faq-item {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
}

.long-copy {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-title {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-copy {
  max-width: 58ch;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- STATIC PAGES ---------- */
.static-page {
  min-height: 100vh;
}

.static-page__hero {
  padding: 28px 24px;
  margin-bottom: 22px;
}

.static-page__hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin: 8px 0 14px;
}

.static-page__hero p {
  max-width: 68ch;
  color: var(--text-secondary);
  line-height: 1.75;
}

.static-page__stack {
  display: grid;
  gap: 18px;
}

.static-page__panel ul {
  padding-left: 20px;
  margin-top: 10px;
}

.static-page__panel li + li {
  margin-top: 8px;
}

@media (max-width: 920px) {
  .insight-strip,
  .prose-grid,
  .use-case-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-nav,
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    gap: 8px;
    padding: 10px 14px;
  }

  .site-nav__brand {
    font-size: 0.9rem;
    letter-spacing: 0.02em;
  }

  .site-nav__links {
    display: flex;
    flex-wrap: nowrap;
    gap: 12px;
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav__links::-webkit-scrollbar {
    display: none;
  }

  .site-nav__links {
    padding-bottom: 2px;
  }

  .site-nav__links a {
    flex: 0 0 auto;
    padding: 0;
    min-height: 0;
    font-size: 0.82rem;
    line-height: 1;
    white-space: nowrap;
    border: 0;
    background: transparent;
  }
}

@media (max-width: 420px) {
  .site-nav {
    gap: 6px;
    padding: 8px 12px;
  }

  .site-nav__brand {
    font-size: 0.84rem;
  }

  .site-nav__links {
    gap: 10px;
  }

  .site-nav__links a {
    font-size: 0.78rem;
  }
}