:root {
    --bg-primary: #0f1117;
    --bg-card: rgba(255, 255, 255, 0.05);
    --accent: #4f9cf9;
    --accent-hover: #6eb0ff;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --border: rgba(255, 255, 255, 0.1);
    --error: #f28b82;
    --radius: 12px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.container {
    max-width: 640px;
    width: 100%;
}

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

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.5px;
}

header .subtitle {
    color: var(--text-secondary);
    margin-top: 0.4rem;
    font-size: 0.95rem;
}

/* Search card */
.search-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.search-row {
    display: flex;
    gap: 0.75rem;
}

input[type="text"] {
    flex: 1;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

input[type="text"]::placeholder {
    color: var(--text-secondary);
}

input[type="text"]:focus {
    border-color: var(--accent);
}

button {
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    white-space: nowrap;
}

button:hover {
    background: var(--accent-hover);
}

button:active {
    transform: scale(0.97);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Error message */
.error-msg {
    color: var(--error);
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

/* Loading */
.loading {
    text-align: center;
    padding: 2.5rem;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Weather card */
.weather-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.weather-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.weather-header h2 {
    font-size: 1.7rem;
    font-weight: 700;
}

.country-badge {
    background: var(--accent);
    color: #fff;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.weather-description {
    color: var(--text-secondary);
    text-transform: capitalize;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.weather-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.1rem;
    transition: background 0.2s;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.07);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.4rem;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Footer */
footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 2rem;
}

/* Utility */
.hidden {
    display: none !important;
}

/* Mobile */
@media (max-width: 480px) {
    header h1 { font-size: 1.7rem; }
    .search-row { flex-direction: column; }
    button { width: 100%; }
    .weather-grid { grid-template-columns: 1fr 1fr; }
}