:root {
    --font-main: "Poppins", "Segoe UI", sans-serif;
    --bg-1: #0f172a;
    --bg-2: #1d4ed8;
    --surface: rgba(11, 18, 37, 0.72);
    --surface-border: rgba(148, 163, 184, 0.25);
    --text-1: #e2e8f0;
    --text-2: #94a3b8;
    --accent: #38bdf8;
    --accent-2: #22d3ee;
    --good: #22c55e;
    --warn: #f59e0b;
    --bad: #ef4444;
    --shadow: 0 20px 40px rgba(2, 6, 23, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-main);
    color: var(--text-1);
    background: linear-gradient(140deg, var(--bg-1), var(--bg-2));
    transition: background 450ms ease, color 250ms ease;
}

.ambient-gradient {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(circle at 16% 20%, rgba(56, 189, 248, 0.35), transparent 38%),
        radial-gradient(circle at 85% 10%, rgba(59, 130, 246, 0.35), transparent 40%),
        radial-gradient(circle at 50% 100%, rgba(20, 184, 166, 0.25), transparent 45%);
    animation: ambientDrift 14s ease-in-out infinite alternate;
}

@keyframes ambientDrift {
    from {
        transform: translateY(0) scale(1);
    }
    to {
        transform: translateY(-18px) scale(1.04);
    }
}

body.theme-light {
    --surface: rgba(255, 255, 255, 0.76);
    --surface-border: rgba(148, 163, 184, 0.32);
    --text-1: #0f172a;
    --text-2: #334155;
    --accent: #0284c7;
    --accent-2: #2563eb;
    --shadow: 0 16px 34px rgba(15, 23, 42, 0.14);
}

body.weather-clear {
    --bg-1: #1e3a8a;
    --bg-2: #0ea5e9;
}

body.weather-clouds {
    --bg-1: #334155;
    --bg-2: #64748b;
}

body.weather-rain {
    --bg-1: #0f172a;
    --bg-2: #1e40af;
}

body.weather-thunder {
    --bg-1: #0b1120;
    --bg-2: #4338ca;
}

body.weather-snow {
    --bg-1: #0f172a;
    --bg-2: #7dd3fc;
}

body.weather-mist {
    --bg-1: #1f2937;
    --bg-2: #475569;
}

body.weather-night {
    --bg-1: #020617;
    --bg-2: #172554;
}

.page-shell {
    width: min(1200px, 94vw);
    margin: 0 auto;
    padding: 1.8rem 0 2.8rem;
}

.container {
    display: grid;
    gap: 1.1rem;
    position: relative;
    overflow: visible;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.eyebrow {
    margin: 0;
    font-size: 0.82rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
}

.title-wrap h1 {
    margin: 0.35rem 0 0;
    font-size: clamp(1.3rem, 2vw, 2rem);
    line-height: 1.25;
}

.local-time {
    margin: 0.45rem 0 0;
    color: var(--text-2);
    font-size: 0.9rem;
    letter-spacing: 0.03em;
}

.theme-toggle {
    border: 1px solid var(--surface-border);
    background: color-mix(in oklab, var(--surface) 88%, transparent);
    color: var(--text-1);
    border-radius: 999px;
    padding: 0.62rem 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: transform 200ms ease, background 200ms ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    background: color-mix(in oklab, var(--surface) 75%, var(--accent) 25%);
}

.card-panel {
    border: 1px solid var(--surface-border);
    border-radius: 22px;
    background: var(--surface);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
}

.reveal-surface {
    opacity: 0;
    transform: translateY(10px) scale(0.99);
    transition: opacity 340ms ease, transform 340ms ease;
}

.reveal-surface.reveal-in {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.search-section {
    padding: 0.8rem;
    position: relative;
    overflow: visible;
    z-index: 400;
    isolation: isolate;
}

.search-box {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0.65rem;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    position: relative;
    border-radius: 14px;
    border: 1px solid var(--surface-border);
    background: rgba(2, 6, 23, 0.18);
    padding: 0 0.9rem;
}

.theme-light .search-input-wrap {
    background: rgba(255, 255, 255, 0.58);
}

.search-icon {
    margin-right: 0.55rem;
    color: var(--text-2);
}

.search-input {
    width: 100%;
    border: 0;
    outline: 0;
    color: var(--text-1);
    font-size: 1rem;
    background: transparent;
    padding: 0.85rem 0.2rem;
}

.search-input::placeholder {
    color: color-mix(in oklab, var(--text-2) 85%, transparent);
}

.search-btn,
.location-btn,
.favorite-btn {
    border: 0;
    cursor: pointer;
    font-weight: 700;
    transition: transform 200ms ease, filter 200ms ease;
}

.search-btn {
    border-radius: 14px;
    padding: 0 1.2rem;
    color: #ecfeff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.location-btn {
    border-radius: 14px;
    width: 48px;
    font-size: 1.1rem;
    background: color-mix(in oklab, var(--surface) 70%, var(--accent) 30%);
    color: var(--text-1);
}

.search-btn:hover,
.location-btn:hover,
.favorite-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.06);
}

.autocomplete-list {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 0.45rem);
    max-height: 290px;
    overflow-y: auto;
    border: 1px solid var(--surface-border);
    background: color-mix(in oklab, var(--surface) 96%, #000 4%);
    border-radius: 16px;
    box-shadow: var(--shadow);
    z-index: 1000;
}

.dashboard-grid,
.hourly-section,
.forecast-section {
    position: relative;
    z-index: 1;
}

.autocomplete-item {
    width: 100%;
    border: 0;
    text-align: left;
    padding: 0.72rem 0.95rem;
    background: transparent;
    color: var(--text-1);
    cursor: pointer;
    transition: background 180ms ease;
    display: grid;
    gap: 0.12rem;
}

.autocomplete-item:hover {
    background: color-mix(in oklab, var(--accent) 24%, transparent);
}

.autocomplete-main {
    font-weight: 600;
}

.autocomplete-sub {
    color: var(--text-2);
    font-size: 0.82rem;
}

.autocomplete-empty {
    padding: 0.72rem 0.95rem;
    color: var(--text-2);
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

.loader {
    display: grid;
    justify-items: center;
    gap: 0.6rem;
    padding: 1.2rem;
    border-radius: 18px;
    border: 1px solid var(--surface-border);
    background: var(--surface);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(148, 163, 184, 0.3);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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

.error-message {
    padding: 0.95rem 1rem;
    border: 1px solid rgba(239, 68, 68, 0.5);
    background: rgba(127, 29, 29, 0.24);
    border-radius: 14px;
    color: #fecaca;
    font-weight: 600;
}

.theme-light .error-message {
    background: rgba(254, 226, 226, 0.9);
    color: #7f1d1d;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1.45fr 0.9fr;
    gap: 1rem;
    align-items: start;
}

.weather-card {
    padding: 1.25rem;
    animation: fadeInUp 450ms ease;
    position: relative;
    overflow: hidden;
}

.weather-card::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.06) 45%, transparent 65%);
    transform: translateX(-120%);
    animation: sheen 7s ease-in-out infinite;
}

.weather-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.label-chip,
.mini-pill {
    margin: 0;
    display: inline-flex;
    padding: 0.24rem 0.7rem;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: color-mix(in oklab, var(--accent) 26%, transparent);
}

.city-name {
    margin: 0.5rem 0 0;
    font-size: clamp(1.55rem, 2.8vw, 2.3rem);
}

.weather-visual {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.weather-icon {
    width: 78px;
    height: 78px;
}

.weather-body {
    margin-top: 0.9rem;
}

.temperature {
    margin: 0;
    font-size: clamp(2.25rem, 4vw, 3.3rem);
    font-weight: 700;
}

.feels-like,
.description {
    margin: 0.28rem 0 0;
    color: var(--text-2);
}

.description {
    color: var(--text-1);
    text-transform: capitalize;
    font-weight: 600;
}

.weather-details {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
}

.detail {
    border: 1px solid var(--surface-border);
    border-radius: 14px;
    padding: 0.7rem 0.85rem;
    background: rgba(2, 6, 23, 0.13);
    display: flex;
    justify-content: space-between;
    gap: 0.7rem;
    align-items: center;
}

.theme-light .detail {
    background: rgba(255, 255, 255, 0.48);
}

.detail .label {
    color: var(--text-2);
    font-size: 0.85rem;
}

.detail .value {
    font-weight: 700;
}

.favorite-btn {
    border-radius: 10px;
    padding: 0.46rem 0.7rem;
    color: #ecfeff;
    background: linear-gradient(135deg, #0ea5e9, #3b82f6);
}

.side-column {
    display: grid;
    gap: 0.95rem;
}

.aqi-card,
.favorites-section,
.recent-section,
.hourly-section,
.forecast-section {
    padding: 1rem;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.7rem;
}

.section-heading h3 {
    margin: 0;
}

.aqi-display {
    display: grid;
    gap: 0.35rem;
    margin-bottom: 0.8rem;
}

.aqi-value {
    font-size: 2rem;
    font-weight: 700;
}

.aqi-status {
    font-weight: 700;
}

.aqi-meta {
    color: var(--text-2);
    font-size: 0.86rem;
}

.aqi-details {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
}

.aqi-details div {
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 0.55rem;
    display: flex;
    justify-content: space-between;
}

.favorites-list,
.recent-searches-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.city-badge,
.recent-search-btn,
.favorite-city-btn,
.remove-favorite-btn,
.remove-recent-btn {
    border: 1px solid var(--surface-border);
    background: rgba(15, 23, 42, 0.2);
    color: var(--text-1);
    border-radius: 999px;
    cursor: pointer;
    transition: background 180ms ease;
}

.city-badge,
.recent-search-btn,
.favorite-city-btn {
    padding: 0.45rem 0.8rem;
}

.remove-favorite-btn,
.remove-recent-btn {
    padding: 0.45rem 0.62rem;
}

.city-badge:hover,
.recent-search-btn:hover,
.favorite-city-btn:hover,
.remove-favorite-btn:hover,
.remove-recent-btn:hover {
    background: color-mix(in oklab, var(--accent) 24%, transparent);
}

.hourly-forecast,
.forecast-grid {
    display: grid;
    gap: 0.75rem;
}

.hourly-forecast {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
}

.forecast-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.hourly-card,
.forecast-card {
    border: 1px solid var(--surface-border);
    border-radius: 14px;
    padding: 0.7rem;
    text-align: center;
    background: rgba(2, 6, 23, 0.13);
}

.theme-light .hourly-card,
.theme-light .forecast-card {
    background: rgba(255, 255, 255, 0.5);
}

.hourly-card .time,
.forecast-day {
    color: var(--text-2);
    font-size: 0.84rem;
    margin-bottom: 0.35rem;
}

.hourly-card img,
.forecast-card img {
    width: 52px;
    height: 52px;
}

.weather-animation {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.5);
    position: relative;
}

.weather-animation::before,
.weather-animation::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    inset: -5px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    opacity: 0;
    animation: ripple 2.2s ease-out infinite;
}

.weather-animation::after {
    animation-delay: 1.1s;
}

.anim-clear {
    background: #facc15;
    animation: pulseGlow 1.8s ease-in-out infinite;
}

.anim-clouds {
    background: #94a3b8;
    animation: floatCloud 2.2s ease-in-out infinite;
}

.anim-rain,
.anim-drizzle {
    background: #38bdf8;
    animation: pulseGlow 1.1s ease-in-out infinite;
}

.anim-thunderstorm {
    background: #a78bfa;
    animation: pulseGlow 0.65s ease-in-out infinite;
}

.anim-snow {
    background: #e2e8f0;
    animation: floatCloud 1.7s ease-in-out infinite;
}

.anim-mist,
.anim-fog,
.anim-haze {
    background: #cbd5e1;
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.5);
    }
    70% {
        box-shadow: 0 0 0 14px rgba(56, 189, 248, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(56, 189, 248, 0);
    }
}

@keyframes floatCloud {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(4px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ripple {
    0% {
        transform: scale(0.7);
        opacity: 0.45;
    }
    100% {
        transform: scale(1.65);
        opacity: 0;
    }
}

@keyframes sheen {
    0% {
        transform: translateX(-120%);
    }
    25% {
        transform: translateX(120%);
    }
    100% {
        transform: translateX(120%);
    }
}

@media (max-width: 980px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .side-column {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 680px) {
    .page-shell {
        width: min(1220px, 95vw);
        padding-top: 1rem;
    }

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

    .search-box {
        grid-template-columns: 1fr;
    }

    .location-btn,
    .search-btn {
        height: 46px;
    }

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