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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 15px;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 25px;
    padding: 15px;
}

h1 {
    font-size: 2.2rem;
    margin-bottom: 8px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

/* Top Timezones Section */
.top-timezones-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.top-timezones-title {
    text-align: center;
    color: #667eea;
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.top-timezones-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.top-timezone-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    padding: 25px;
    color: white;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: transform 0.3s, box-shadow 0.3s;
}

.top-timezone-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.top-timezone-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    opacity: 0.95;
}

.top-time-display {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 12px;
    font-variant-numeric: tabular-nums;
}

.top-date-display {
    font-size: 1.1rem;
    margin-bottom: 12px;
    opacity: 0.9;
}

.top-offset-display {
    font-size: 1rem;
    background: rgba(255,255,255,0.2);
    padding: 8px 15px;
    border-radius: 20px;
    display: inline-block;
    backdrop-filter: blur(10px);
}

@media (max-width: 968px) {
    .top-timezones-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .top-time-display {
        font-size: 2.5rem;
    }
    
    .top-timezone-name {
        font-size: 1.1rem;
    }
}

.search-container {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.search-box {
    width: 100%;
    max-width: 500px;
    padding: 10px 15px;
    font-size: 0.9rem;
    border: none;
    border-radius: 50px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    outline: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.search-box:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.timezones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.timezone-card {
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.timezone-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.timezone-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.timezone-name::before {
    content: "🌍";
    font-size: 1rem;
}

.time-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 6px;
    font-variant-numeric: tabular-nums;
}

.date-display {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 4px;
}

.offset-display {
    font-size: 0.75rem;
    color: #999;
    background: #f5f5f5;
    padding: 4px 8px;
    border-radius: 15px;
    display: inline-block;
}

.no-results {
    text-align: center;
    color: white;
    font-size: 1rem;
    padding: 25px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.footer {
    text-align: center;
    color: white;
    margin-top: 25px;
    padding: 15px;
    opacity: 0.8;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .timezones-grid {
        grid-template-columns: 1fr;
    }
}

.loading {
    text-align: center;
    color: white;
    font-size: 1.2rem;
    padding: 25px;
}

/* Comparison Section Styles */
.comparison-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.comparison-title {
    text-align: center;
    color: #667eea;
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.comparison-controls {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.comparison-select-wrapper {
    flex: 1;
    min-width: 150px;
    max-width: 200px;
}

.comparison-select-wrapper label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
    font-size: 0.8rem;
}

.autocomplete-container {
    position: relative;
    width: 100%;
}

.comparison-select {
    width: 100%;
    padding: 8px 12px;
    font-size: 0.85rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    background: white;
    color: #333;
    cursor: text;
    transition: border-color 0.3s, box-shadow 0.3s;
    outline: none;
}

.comparison-select:hover {
    border-color: #667eea;
}

.comparison-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.autocomplete-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid #667eea;
    border-top: none;
    border-radius: 0 0 8px 8px;
    max-height: 250px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: none;
    margin-top: -2px;
}

.suggestion-item {
    padding: 10px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    color: #333;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s;
}

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

.suggestion-item:hover,
.suggestion-item.active {
    background-color: #f0f4ff;
    color: #667eea;
}

.suggestion-item:first-child {
    border-radius: 0;
}

.vs-divider {
    font-size: 1.2rem;
    font-weight: 700;
    color: #667eea;
    padding: 0 8px;
    align-self: center;
    margin-bottom: 20px;
}

.comparison-result {
    min-height: 150px;
}

.comparison-placeholder {
    text-align: center;
    color: #999;
    font-size: 0.95rem;
    padding: 25px;
    font-style: italic;
}

.comparison-cards {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 15px;
    align-items: center;
}

.comparison-cards-three {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.comparison-differences {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.difference-box {
    text-align: center;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
}

.comparison-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    padding: 18px;
    color: white;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: transform 0.3s;
}

.comparison-card:hover {
    transform: translateY(-2px);
}

.comparison-card-header {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 10px;
    opacity: 0.95;
}

.comparison-time {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
}

.comparison-date {
    font-size: 0.85rem;
    margin-bottom: 8px;
    opacity: 0.9;
}

.comparison-offset {
    font-size: 0.75rem;
    background: rgba(255,255,255,0.2);
    padding: 4px 10px;
    border-radius: 15px;
    display: inline-block;
    backdrop-filter: blur(10px);
}

.comparison-difference {
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    min-width: 150px;
}

.difference-label {
    font-size: 0.75rem;
    color: #666;
    margin-bottom: 6px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difference-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 6px;
}

.difference-text {
    font-size: 0.75rem;
    color: #666;
    line-height: 1.3;
}

@media (max-width: 1200px) {
    .comparison-cards-three {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .comparison-differences {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

@media (max-width: 968px) {
    .comparison-cards {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .comparison-difference {
        order: -1;
    }
    
    .vs-divider {
        margin-bottom: 0;
    }
    
    .comparison-cards-three {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .comparison-differences {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .comparison-section {
        padding: 15px;
    }
    
    .comparison-title {
        font-size: 1.2rem;
    }
    
    .comparison-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .comparison-select-wrapper {
        max-width: 100%;
        min-width: 100%;
    }
    
    .vs-divider {
        margin: 8px 0;
        align-self: center;
    }
    
    .comparison-time {
        font-size: 1.5rem;
    }
    
    .difference-value {
        font-size: 1.2rem;
    }
}

@media (max-width: 1024px) {
    .comparison-select-wrapper {
        max-width: 220px;
    }
}