@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=DM+Sans:wght@300;400;500&display=swap');

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

  :root {
    --navy: #0B1B2B;
    --slate: #1E3A5F;
    --teal: #4A9B9B;
    --amber: #F4A261;
    --soft-white: #E8F4F8;
    --rain-grey: #8BA3B5;
    --card-bg: rgba(255,255,255,0.06);
    --border: rgba(255,255,255,0.1);
  }

  html, body {
    min-height: 100%;
    font-family: 'DM Sans', sans-serif;
    background: var(--navy);
    color: var(--soft-white);
    overflow-x: hidden;
  }

  /* ── SKY BACKGROUND ── */
  #sky {
    position: fixed; inset: 0; z-index: 0;
    transition: background 2s ease;
  }
  #sky.sunny {
    background: radial-gradient(ellipse at 30% 20%, #F4A261 0%, #E76F51 20%, #2D6A8A 55%, #0B1B2B 100%);
  }
  #sky.cloudy {
    background: radial-gradient(ellipse at 50% 10%, #5A7A9A 0%, #2E4E6A 40%, #0B1B2B 100%);
  }
  #sky.rainy {
    background: radial-gradient(ellipse at 50% 0%, #1E3A5F 0%, #0D2236 50%, #060F18 100%);
  }
  #sky.snowy {
    background: radial-gradient(ellipse at 50% 10%, #7BAEC5 0%, #3A6B8A 40%, #0B1B2B 100%);
  }
  #sky.night {
    background: radial-gradient(ellipse at 70% 10%, #1a1a4a 0%, #0B1B2B 60%, #050C14 100%);
  }

  /* Stars for night */
  .stars { position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0; transition: opacity 2s; }
  .stars.visible { opacity: 1; }
  .star { position: absolute; border-radius: 50%; background: white; animation: twinkle 3s infinite ease-in-out; }
  @keyframes twinkle { 0%,100%{opacity:.2} 50%{opacity:1} }

  /* Rain */
  .rain-container { position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; opacity: 0; transition: opacity 1s; }
  .rain-container.active { opacity: 1; }
  .raindrop { position: absolute; top: -20px; width: 1px; background: linear-gradient(transparent, rgba(174,214,241,0.6)); animation: fall linear infinite; }
  @keyframes fall { to { transform: translateY(110vh); } }

  /* Snow */
  .snow-container { position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; opacity: 0; transition: opacity 1s; }
  .snow-container.active { opacity: 1; }
  .snowflake { position: absolute; top: -10px; color: white; font-size: 12px; animation: snowfall linear infinite; opacity: 0.7; }
  @keyframes snowfall { to { transform: translateY(110vh) rotate(360deg); } }

  /* ── LAYOUT ── */
  #app {
    position: relative; z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    min-height: 100vh;
    padding: 20px;
    margin-top: 40px;
    border-radius: 24px;
    background: rgba(11, 27, 43, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  }

  /* ── SEARCH BAR ── */
  .search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 20px 0;
    max-width: 500px;
    margin: 0 auto;
    padding: 20px 0;
  }
  .search-input {
    flex: 1;
    background: rgba(255,255,255,0.12);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 18px;
    color: white;
    font-size: 15px;
    font-family: 'DM Sans', sans-serif;
    outline: none;
    backdrop-filter: blur(8px);
    transition: border-color .2s, background .2s;
  }
  .search-input::placeholder { color: rgba(255,255,255,.4); }
  .search-input:focus { border-color: var(--teal); background: rgba(255,255,255,0.16); }
  
  .locate-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--border);
    border-radius: 14px;
    width: 46px; height: 46px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    transition: background .2s, transform .1s;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
  }
  .locate-btn:hover { background: rgba(74,155,155,.25); border-color: var(--teal); }
  .locate-btn:active { transform: scale(.95); }
  .locate-btn.locating { animation: pulse-loc 1s ease-in-out infinite; }
  @keyframes pulse-loc { 0%,100%{opacity:1} 50%{opacity:.4} }

  .locate-status {
    text-align: center;
    font-size: 12px;
    color: var(--rain-grey);
    padding: 6px 24px 0;
    min-height: 22px;
    transition: opacity .3s;
  }
  .locate-status.error { color: #F4A0A0; }
  
  .search-btn {
    background: var(--teal);
    border: none; border-radius: 14px;
    width: 46px; height: 46px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 18px;
    transition: background .2s, transform .1s;
    flex-shrink: 0;
  }
  .search-btn:hover { background: #3A8888; }
  .search-btn:active { transform: scale(.95); }

  /* ── HERO CURRENT WEATHER ── */
  .hero {
    padding: 30px 24px 24px;
    text-align: center;
  }
  .hero-location {
    font-size: 14px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--rain-grey);
    margin-bottom: 4px;
  }
  .hero-city {
    font-size: 28px;
    font-weight: 500;
    margin-bottom: 2px;
    color: white;
  }
  .hero-date {
    font-size: 13px;
    color: var(--rain-grey);
    margin-bottom: 30px;
  }
  .hero-icon {
    font-size: 80px;
    line-height: 1;
    margin-bottom: 12px;
    display: block;
    filter: drop-shadow(0 4px 20px rgba(244,162,97,.3));
    animation: float 4s ease-in-out infinite;
  }
  @keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
  .hero-temp {
    font-size: 88px;
    font-weight: 300;
    line-height: 1;
    letter-spacing: -4px;
    color: white;
  }
  .hero-temp sup {
    font-size: 32px;
    vertical-align: top;
    margin-top: 18px;
    display: inline-block;
    letter-spacing: 0;
    color: var(--rain-grey);
  }
  .hero-desc {
    font-size: 17px;
    color: var(--rain-grey);
    margin-top: 6px;
    text-transform: capitalize;
    letter-spacing: .04em;
  }
  .hero-feels {
    font-size: 13px;
    color: rgba(139,163,181,.7);
    margin-top: 4px;
  }

  /* Stats row */
  .stats-row {
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 24px 24px 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    backdrop-filter: blur(12px);
    overflow: hidden;
  }
  .stat {
    flex: 1;
    padding: 16px 8px;
    text-align: center;
    border-right: 1px solid var(--border);
  }
  .stat:last-child { border-right: none; }
  .stat-icon { font-size: 18px; display: block; margin-bottom: 4px; }
  .stat-val {
    font-size: 15px;
    font-weight: 500;
    color: white;
    display: block;
  }
  .stat-label {
    font-size: 11px;
    color: var(--rain-grey);
    display: block;
    margin-top: 2px;
    letter-spacing: .05em;
  }

  /* ── SECTION HEADER ── */
  .section-header {
    padding: 28px 24px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .section-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--rain-grey);
    font-weight: 500;
  }

  /* ── HOURLY STRIP ── */
  .hourly-scroll {
    display: flex;
    gap: 10px;
    padding: 0 24px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .hourly-scroll::-webkit-scrollbar { display: none; }
  .hour-card {
    flex-shrink: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px 14px;
    text-align: center;
    min-width: 70px;
    backdrop-filter: blur(12px);
    transition: background .2s, border-color .2s;
    cursor: default;
  }
  .hour-card.active {
    background: rgba(74,155,155,0.25);
    border-color: var(--teal);
  }
  .hour-card:hover:not(.active) {
    background: rgba(255,255,255,0.1);
  }
  .hour-time {
    font-size: 12px;
    color: var(--rain-grey);
    display: block;
    margin-bottom: 8px;
  }
  .hour-icon { font-size: 22px; display: block; margin-bottom: 8px; }
  .hour-temp {
    font-size: 15px;
    font-weight: 500;
    color: white;
  }

  /* ── 7-DAY FORECAST ── */
  .forecast-list {
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .day-card {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px 18px;
    backdrop-filter: blur(12px);
    transition: background .2s;
    cursor: default;
  }
  .day-card:hover { background: rgba(255,255,255,0.09); }
  .day-name {
    width: 48px;
    font-size: 14px;
    font-weight: 500;
    color: white;
  }
  .day-icon { font-size: 22px; flex: 1; text-align: center; }
  .day-desc {
    flex: 2;
    font-size: 12px;
    color: var(--rain-grey);
    text-transform: capitalize;
  }
  .day-temps {
    display: flex;
    gap: 10px;
    align-items: center;
  }
  .day-high {
    font-size: 15px;
    font-weight: 500;
    color: white;
  }
  .day-low {
    font-size: 14px;
    color: var(--rain-grey);
  }

  /* Temp range bar */
  .day-bar {
    flex: 1;
    height: 4px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    margin: 0 12px;
    overflow: hidden;
  }
  .day-bar-fill {
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(90deg, #4A9B9B, #F4A261);
  }

  /* ── UV / SUNRISE CARD ── */
  .extra-cards {
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .extra-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    backdrop-filter: blur(12px);
  }
  .extra-card-title {
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--rain-grey);
    margin-bottom: 12px;
  }
  .extra-card-value {
    font-size: 28px;
    font-weight: 300;
    color: white;
    line-height: 1;
    margin-bottom: 4px;
  }
  .extra-card-sub {
    font-size: 12px;
    color: var(--rain-grey);
  }
  .uv-bar {
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, #4A9B9B, #F4A261, #E76F51, #C62828);
    margin-top: 12px;
    position: relative;
  }
  .uv-marker {
    position: absolute;
    top: -4px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--navy);
    transform: translateX(-50%);
    transition: left .5s ease;
  }

  /* ── UNIT TOGGLE ── */
  .unit-toggle {
    display: flex;
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
  }
  .unit-btn {
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--rain-grey);
    cursor: pointer;
    font-family: 'DM Sans', sans-serif;
    transition: all .2s;
  }
  .unit-btn.active {
    background: var(--teal);
    color: white;
  }

  /* ── LOADING ── */
  .loading {
    text-align: center;
    padding: 60px 24px;
    display: none;
  }
  .loading.visible { display: block; }
  .spinner {
    width: 40px; height: 40px;
    border: 2px solid rgba(255,255,255,.1);
    border-top-color: var(--teal);
    border-radius: 50%;
    animation: spin .8s linear infinite;
    margin: 0 auto 16px;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* ── ERROR ── */
  .error-msg {
    background: rgba(199,62,62,0.15);
    border: 1px solid rgba(199,62,62,0.3);
    border-radius: 14px;
    padding: 14px 18px;
    margin: 0 24px;
    font-size: 14px;
    color: #F4A0A0;
    display: none;
    text-align: center;
  }
  .error-msg.visible { display: block; }

  #weather-content { display: none; }
  #weather-content.visible { display: block; }

  .welcome {
    text-align: center;
    padding: 60px 24px 40px;
    color: var(--rain-grey);
  }
  .welcome-icon { font-size: 60px; margin-bottom: 16px; display: block; }
  .welcome h2 { font-size: 20px; font-weight: 400; color: white; margin-bottom: 8px; }
  .welcome p { font-size: 14px; line-height: 1.6; }

  @media (prefers-reduced-motion: reduce) {
    .hero-icon, .raindrop, .snowflake { animation: none !important; }
  }

  /* Wide screens */
  @media (min-width: 520px) {
    #app { padding-bottom: 60px; }
    .hero-temp { font-size: 100px; }
  }

  /* ── AQI CARD ── */
  .aqi-card {
    margin: 0 24px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px 22px;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
  }
  .aqi-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    border-radius: 20px 20px 0 0;
    transition: background .5s;
  }
  .aqi-card.aqi-good::before    { background: #00C851; }
  .aqi-card.aqi-fair::before    { background: #A8D500; }
  .aqi-card.aqi-moderate::before { background: #F4A261; }
  .aqi-card.aqi-poor::before    { background: #FF6B35; }
  .aqi-card.aqi-very-poor::before { background: #C0392B; }
 
  .aqi-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
  }
  .aqi-label {
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--rain-grey);
  }
  .aqi-badge {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .aqi-number {
    font-size: 42px;
    font-weight: 300;
    line-height: 1;
    color: white;
  }
  .aqi-status {
    font-size: 13px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 20px;
    letter-spacing: .04em;
  }
  .aqi-good .aqi-status    { background: rgba(0,200,81,.2);  color: #00E55A; }
  .aqi-fair .aqi-status    { background: rgba(168,213,0,.2); color: #C5F000; }
  .aqi-moderate .aqi-status { background: rgba(244,162,97,.2);color: #F4A261; }
  .aqi-poor .aqi-status    { background: rgba(255,107,53,.2); color: #FF6B35; }
  .aqi-very-poor .aqi-status { background: rgba(192,57,43,.2);color: #E74C3C; }
 
  /* Gauge bar */
  .aqi-gauge {
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, #00C851, #A8D500 25%, #F4A261 50%, #FF6B35 75%, #C0392B);
    margin-bottom: 6px;
    position: relative;
  }
  .aqi-gauge-marker {
    position: absolute;
    top: -5px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--navy);
    box-shadow: 0 0 6px rgba(0,0,0,.4);
    transform: translateX(-50%);
    transition: left .6s cubic-bezier(.34,1.56,.64,1);
  }
  .aqi-gauge-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--rain-grey);
    margin-bottom: 18px;
    letter-spacing: .04em;
  }
 
  /* Pollutants grid */
  .aqi-pollutants {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  .pollutant {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    padding: 10px 10px 8px;
    text-align: center;
  }
  .pollutant-name {
    font-size: 10px;
    color: var(--rain-grey);
    letter-spacing: .06em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 4px;
  }
  .pollutant-val {
    font-size: 14px;
    font-weight: 500;
    color: white;
    display: block;
  }
  .pollutant-unit {
    font-size: 9px;
    color: rgba(139,163,181,.6);
    display: block;
    margin-top: 1px;
  }
  .aqi-advice {
    margin-top: 14px;
    font-size: 12px;
    color: var(--rain-grey);
    line-height: 1.5;
    padding-top: 14px;
    border-top: 1px solid var(--border);
  }
 
  @media (prefers-reduced-motion: reduce) {
    .hero-icon, .raindrop, .snowflake { animation: none !important; }
  }

  /* ── FOOTER ── */
.app-footer {
  text-align: center;
  padding: 24px 20px 10px;
  margin-top: 30px;
  border-top: 1px solid var(--border);
  color: rgba(255, 255, 255, 0.7); 
  width: 100%;
}

.app-footer p {
  font-size: 13px;
  margin-bottom: 6px;
  font-weight: 400;
}

.app-footer .footer-sub {
  font-size: 11px;
  opacity: 0.6;
  letter-spacing: 0.04em;
}

/* Wide screens */
@media (min-width: 520px) {
  #app { padding-bottom: 20px; }
  .hero-temp { font-size: 100px; }
}