/* 世界时钟工具样式 */

:root {
    --primary-color: #06b6d4;
    --primary-hover: #22d3ee;
    --primary-light: rgba(6, 182, 212, 0.08);
    --primary-light-hover: rgba(6, 182, 212, 0.12);
    --border-color-hover: rgba(6, 182, 212, 0.2);
    --shadow-primary: 0 0 16px rgba(6, 182, 212, 0.15);
}

html, body { height: 100%; overflow-y: auto; overflow-x: hidden; margin: 0; }
body { display: flex; align-items: flex-start; justify-content: center; padding-top: 70px; padding-bottom: 70px; min-height: 100vh; }
.logo-icon { background: linear-gradient(135deg, var(--primary-color) 0%, #0e7490 100%); }
.main-content { width: 100%; max-width: 1000px; padding: 20px; z-index: 10; }

/* 本地时钟 */
.local-clock {
    text-align: center;
    margin-bottom: 24px;
}
.clock-circle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.time-display {
    font-size: 48px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--primary-color);
    letter-spacing: 4px;
}
.date-display {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 8px;
}
.local-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}
.local-label i { color: var(--primary-color); margin-right: 4px; }

/* 搜索 */
.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}
.search-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}
.search-input:focus { border-color: var(--primary-color); }
.sort-select {
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    cursor: pointer;
}

/* 城市网格 */
.clocks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.city-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    transition: all 0.3s;
    cursor: pointer;
    user-select: none;
}
.city-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.city-card.night { border-left: 3px solid #4a4540; }
.city-card.day { border-left: 3px solid var(--primary-color); }

.city-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.city-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.city-icon {
    font-size: 18px;
}
.city-icon.sun { color: #fbbf24; }
.city-icon.moon { color: #94a3b8; }

.city-time {
    font-size: 28px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
    margin-bottom: 4px;
}
.city-date {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.city-offset {
    font-size: 11px;
    color: var(--text-secondary);
}
.city-offset .diff { color: var(--primary-color); font-weight: 600; }

@media (max-width: 768px) {
    .clocks-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
    .time-display { font-size: 36px; }
    .search-bar { flex-direction: column; }
}
@media (max-width: 480px) {
    .main-content { padding: 10px; }
    .clocks-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .city-time { font-size: 22px; }
    .time-display { font-size: 30px; }
}