/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #0f1923;
    --bg-secondary: #1a2736;
    --card-bg: #1e2d3d;
    --card-border: #2a3f55;
    --card-hover: #243749;
    --text: #edf2f7;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --accent: #63b3ed;
    --accent-warm: #fc8181;
    --accent-cool: #90cdf4;
    --accent-gold: #f6e05e;
    --accent-green: #68d391;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --radius: 14px;
    --radius-sm: 10px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
    padding-bottom: 2rem;
}

.hidden {
    display: none !important;
}

/* ===== Loading Screen ===== */
.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    gap: 1.5rem;
}

.loading-screen p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--card-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== Error Screen ===== */
.error-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.error-card {
    background: var(--card-bg);
    color: var(--text);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    text-align: center;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--card-border);
}

.error-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.error-card h2 {
    margin-bottom: 0.5rem;
}

.error-card p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.error-card button {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 999px;
    cursor: pointer;
    transition: opacity 0.15s;
}

.error-card button:hover {
    opacity: 0.85;
}

/* ===== Main App ===== */
.app {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
}

/* ===== Header ===== */
header {
    text-align: center;
    margin-bottom: 2rem;
}

.brand {
    font-size: 1.75rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--text);
}

.brand span {
    font-weight: 700;
    color: var(--accent);
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.location-row {
    margin-top: 0.75rem;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    color: var(--text-secondary);
}

/* ===== Location Search ===== */
.location-search {
    margin-top: 0.85rem;
    position: relative;
    display: inline-flex;
    width: 100%;
    max-width: 380px;
}

.location-search input {
    width: 100%;
    padding: 0.55rem 2.5rem 0.55rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--card-border);
    background: var(--bg-secondary);
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.2s;
}

.location-search input::placeholder {
    color: var(--text-muted);
}

.location-search input:focus {
    border-color: var(--accent);
}

.location-search .search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent);
    color: var(--bg);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.15s;
}

.location-search .search-btn:hover {
    opacity: 0.85;
}

.search-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    max-height: 240px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.search-result-item {
    padding: 0.65rem 1rem;
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--card-border);
    transition: background 0.15s;
}

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

.search-result-item:hover {
    background: var(--card-hover);
    color: var(--text);
}

.search-result-item .result-country {
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* ===== Controls Row ===== */
.controls-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 0.85rem;
    flex-wrap: wrap;
}

.unit-toggle {
    display: inline-flex;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    overflow: hidden;
}

.unit-btn {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 0.3rem 1rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.unit-btn.active {
    background: var(--accent);
    color: var(--bg);
    font-weight: 600;
}

.my-location-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    padding: 0.3rem 0.85rem;
    font-size: 0.85rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.my-location-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== Hero Card ===== */
.hero-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    position: relative;
}

.hero-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.hero-icon {
    font-size: 4rem;
    line-height: 1;
}

.hero-temp {
    display: flex;
    flex-direction: column;
}

.big-temp {
    font-size: 4rem;
    font-weight: 200;
    line-height: 1;
    color: var(--text);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.hero-climatology {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
    margin-top: 0.75rem;
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.3;
}

.hero-climatology.hidden {
    display: none;
}

.hero-climatology .clim-text {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.hero-climatology .clim-sub {
    font-size: 0.72rem;
    font-weight: 500;
    opacity: 0.85;
    padding-left: 1.15rem;
}

.hero-climatology.typical {
    background: rgba(104, 211, 145, 0.15);
    color: var(--accent-green);
    border-radius: var(--radius);
}

.hero-climatology.warmer {
    background: rgba(252, 129, 129, 0.18);
    color: var(--accent-warm);
    border-radius: var(--radius);
}

.hero-climatology.warmer.unusual {
    background: rgba(252, 129, 129, 0.28);
    box-shadow: 0 0 0 1px rgba(252, 129, 129, 0.35);
}

.hero-climatology.cooler {
    background: rgba(144, 205, 244, 0.18);
    color: var(--accent-cool);
    border-radius: var(--radius);
}

.hero-climatology.cooler.unusual {
    background: rgba(144, 205, 244, 0.28);
    box-shadow: 0 0 0 1px rgba(144, 205, 244, 0.35);
}

.hero-details {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    padding-top: 1.25rem;
    border-top: 1px solid var(--card-border);
}

.detail {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 90px;
}

.detail-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.detail-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.hero-date {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== Section Titles ===== */
.section-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-secondary);
}

.section-title span {
    color: var(--accent);
}

/* ===== Snapshot Cards ===== */
.snapshot-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.snapshot-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 1.25rem 0.75rem;
    text-align: center;
    border: 1px solid var(--card-border);
    transition: all 0.2s;
}

.snapshot-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 4px 16px rgba(99, 179, 237, 0.15);
}

.snapshot-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.15rem;
}

.snapshot-year {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.snapshot-icon {
    font-size: 2rem;
    margin-bottom: 0.35rem;
}

.snapshot-temp {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text);
}

.snapshot-range {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.snapshot-desc {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.snapshot-precip {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.temp-diff {
    display: inline-block;
    font-size: 0.72rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    margin-top: 0.4rem;
    font-weight: 600;
}

.temp-diff.warmer {
    background: rgba(252, 129, 129, 0.2);
    color: var(--accent-warm);
}

.temp-diff.cooler {
    background: rgba(144, 205, 244, 0.2);
    color: var(--accent-cool);
}

.temp-diff.same {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 700px) {
    .snapshot-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-icon {
        font-size: 3rem;
    }

    .big-temp {
        font-size: 3rem;
    }

    .app {
        padding: 1.5rem 1rem 2rem;
    }
}

@media (max-width: 400px) {
    .snapshot-row {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .hero-details {
        gap: 0.5rem;
    }

    .brand {
        font-size: 1.4rem;
    }
}

/* ===== API Usage Badge (beta) ===== */
.api-usage {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.45rem 1rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(15, 25, 35, 0.92);
    border-top: 1px solid var(--card-border);
    backdrop-filter: blur(8px);
    z-index: 200;
}

.api-usage.warning {
    color: var(--accent-gold);
    border-top-color: rgba(246, 224, 94, 0.35);
}

.api-usage.critical {
    color: var(--accent-warm);
    border-top-color: rgba(252, 129, 129, 0.35);
}

.api-usage.exhausted {
    color: var(--accent-warm);
    background: rgba(45, 20, 20, 0.95);
    border-top-color: rgba(252, 129, 129, 0.5);
    font-weight: 600;
}