:root {
    --bg-color: #0b1c2e;
    --card-bg: #1e3a5f;
    --card-bg-gradient: linear-gradient(135deg, #1e3a5f 0%, #0d253f 100%);
    --text-color: #ffffff;
    --text-muted: #b0c4de;
    --accent-color: #4a90e2;
    --font-family: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.5;
    padding: 20px;
    display: flex;
    justify-content: center;
    overflow-x: hidden; /* Prevent horizontal scroll on body */
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

header {
    display: flex;
    flex-wrap: wrap; /* Allow wrapping on small screens */
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.search-box {
    display: flex;
    gap: 10px;
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #2a2a3e;
    border-radius: 12px;
    margin-top: 5px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.4);
    z-index: 1000;
    max-height: 250px;
    overflow-y: auto;
}

.search-results div {
    padding: 12px 20px;
    cursor: pointer;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: background 0.2s;
}

.search-results div:hover {
    background: rgba(255,255,255,0.1);
}

.search-results div:last-child {
    border-bottom: none;
}

.hidden {
    display: none;
}

.search-box input {
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 10px 20px;
    color: white;
    outline: none;
    transition: background 0.3s;
}

.search-box input:focus {
    background: rgba(255, 255, 255, 0.2);
}

.search-box button {
    background: var(--accent-color);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    color: white;
    transition: transform 0.2s;
}

.search-box button:hover {
    transform: scale(1.05);
}

@media (max-width: 480px) {
    .container {
        padding: 0 5px;
    }
    .current-weather-card {
        padding: 20px;
    }
    .temp-display {
        font-size: 3rem;
    }
    .weather-icon {
        font-size: 3.5rem;
    }
}

h1 {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    font-weight: 600;
    text-align: center;
    flex: 2;
    order: -1; /* Place title first on mobile if needed, but flex-wrap handles it */
}

.header-controls {
    display: flex;
    gap: 10px;
}

.units-toggle, .lang-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.1);
    padding: 5px 15px;
    border-radius: 20px;
    cursor: pointer;
}

.units-toggle span, .lang-toggle span {
    opacity: 0.5;
    transition: opacity 0.3s, font-weight 0.3s;
}

.units-toggle span.active, .lang-toggle span.active {
    opacity: 1;
    font-weight: 700;
}

main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 1024px) {
    main {
        grid-template-columns: 350px 1fr;
    }
}

.current-weather-card {
    background: var(--card-bg-gradient);
    border-radius: 24px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

@media (min-width: 1024px) {
    .current-weather-card {
        grid-row: 1 / 3;
    }
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.refresh-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.refresh-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.weather-main {
    text-align: center;
    margin: 20px 0;
}

.weather-icon {
    font-size: clamp(4rem, 10vw, 6rem);
    margin-bottom: 10px;
}

.temp-display {
    font-size: clamp(3.5rem, 8vw, 5rem);
    font-weight: 700;
}

.temp-display .unit {
    font-size: 2rem;
    vertical-align: top;
    margin-left: 5px;
}

#currentDesc {
    font-size: 1.2rem;
    margin-top: 5px;
    font-weight: 500;
}

.weather-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 30px;
    background: rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 20px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.detail-item .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.detail-item .value {
    font-weight: 600;
    font-size: 0.9rem;
}

.detail-item .sub-value {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.hourly-forecast-card, .daily-forecast-card {
    background: var(--card-bg-gradient);
    border-radius: 24px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    overflow: hidden; /* Keep children inside */
}

.hourly-grid {
    display: flex;
    overflow-x: auto;
    gap: 15px;
    padding: 10px 0 20px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) transparent;
    -webkit-overflow-scrolling: touch;
}

.hourly-grid::-webkit-scrollbar {
    height: 6px;
}

.hourly-grid::-webkit-scrollbar-thumb {
    background-color: var(--accent-color);
    border-radius: 10px;
}

.hourly-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 18px;
    flex-shrink: 0;
}

.hourly-item .time {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hourly-item .icon {
    font-size: 2rem;
    margin: 10px 0;
}

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

.daily-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

@media (min-width: 640px) {
    .daily-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 15px;
    }
}

.daily-item {
    display: grid;
    grid-template-columns: 80px 40px 1fr 80px;
    align-items: center;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 18px;
    transition: transform 0.2s, background 0.2s;
}

@media (min-width: 640px) {
    .daily-item {
        display: flex;
        flex-direction: column;
        text-align: center;
        padding: 20px 15px;
    }
    .daily-item .icon { margin: 10px 0; }
}

.daily-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.1);
}

.daily-item .day {
    font-weight: 600;
}

.daily-item .icon {
    font-size: 1.5rem;
}

.daily-item .temps {
    font-weight: 700;
}

.daily-item .temps .low {
    font-weight: 400;
    color: var(--text-muted);
    margin-left: 8px;
}

.daily-item .desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: right;
}

@media (min-width: 640px) {
    .daily-item .desc {
        text-align: center;
    }
}

footer {
    margin-top: 50px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 30px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Loader */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.3s, visibility 0.3s;
}

.loader-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
    }
    .search-box {
        width: 100%;
        order: 2;
    }
    h1 {
        width: 100%;
        order: 1;
        margin-bottom: 10px;
    }
    .units-toggle {
        order: 3;
    }
    .weather-details {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}