/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(241, 245, 249, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(248, 250, 252, 0.2) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(250, 252, 255, 0.9) 25%,
        rgba(248, 250, 255, 0.95) 50%,
        rgba(250, 252, 255, 0.9) 75%,
        rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}



.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 10;
    gap: 2rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-shrink: 0;
    width: 728px;
    max-width: 728px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.theme-icon {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-icon {
    transform: rotate(180deg);
}

.ad-slot.leaderboard {
    width: 728px;
    height: 90px;
    max-width: 728px;
    max-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.ad-placeholder {
    background: #f3f4f6;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
    width: 100%;
    height: 100%;
    max-width: 728px;
    max-height: 90px;
}

.ad-placeholder.small {
    width: 300px;
    height: 250px;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1rem;
    position: relative;
    z-index: 1;
}

/* Timezone Cards Section */
.timezone-cards-section {
    margin-bottom: 2rem;
}

.timezone-cards-container {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding: 1rem 0;
    scrollbar-width: thin;
    scrollbar-color: #d1d5db transparent;
}

.timezone-cards-container::-webkit-scrollbar {
    height: 6px;
}

.timezone-cards-container::-webkit-scrollbar-track {
    background: transparent;
}

.timezone-cards-container::-webkit-scrollbar-thumb {
    background-color: #d1d5db;
    border-radius: 3px;
}

/* Floating Add City Input */
.floating-add-input {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 120px;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.floating-input-container {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border: 1px solid #e5e7eb;
    position: relative;
    min-width: 300px;
    max-width: 400px;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.floating-input-container .input-container {
    margin-bottom: 0;
}

.floating-input-container .city-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.floating-input-container .city-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.cancel-add-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.25rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cancel-add-btn:hover {
    background-color: #f3f4f6;
    color: #374151;
}

.input-label {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.input-container {
    position: relative;
}

.city-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.city-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-top: none;
    border-radius: 0 0 8px 8px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 50;
    display: none;
}

.autocomplete-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid #f3f4f6;
    transition: background-color 0.2s ease;
}

.autocomplete-item:hover {
    background-color: #f9fafb;
}

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

/* Meeting Planner Section */
.meeting-planner-section {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 
        0 10px 25px rgba(0, 0, 0, 0.08),
        0 4px 10px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.meeting-planner-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(118, 75, 162, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.meeting-planner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1.5rem;
    align-items: start;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.current-time-display {
    text-align: center;
}

.current-time-display h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.time-display {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.date-display {
    font-size: 0.875rem;
    color: #6b7280;
}

.time-slider-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.slider-label {
    font-size: 1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.slider-container {
    position: relative;
    margin: 0.5rem 0;
}

.slider-track {
    position: relative;
    height: 32px;
    display: flex;
    align-items: center;
}

.time-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: transparent;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    position: relative;
    z-index: 2;
}

.time-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    box-shadow: 
        0 4px 12px rgba(102, 126, 234, 0.4),
        0 2px 4px rgba(0, 0, 0, 0.1);
    border: 3px solid white;
    position: relative;
    z-index: 3;
    transition: all 0.2s ease;
}

.time-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 
        0 6px 16px rgba(102, 126, 234, 0.5),
        0 2px 8px rgba(0, 0, 0, 0.15);
}

.time-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 
        0 4px 12px rgba(102, 126, 234, 0.4),
        0 2px 4px rgba(0, 0, 0, 0.1);
}

.slider-marks {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    pointer-events: none;
}

.slider-marks::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: #e5e7eb;
    transform: translateY(-50%);
    z-index: 1;
}

.mark {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.mark.major {
    width: 2px;
    height: 16px;
    background: #374151;
    border-radius: 1px;
}

.mark.major span {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: #374151;
    font-weight: 500;
    white-space: nowrap;
}

.mark.minor {
    width: 1px;
    height: 10px;
    background: #9ca3af;
    border-radius: 0.5px;
}

.mark.half-hour {
    width: 1px;
    height: 6px;
    background: #d1d5db;
    border-radius: 0.5px;
}

.selected-time-display {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-top: 0.5rem;
    letter-spacing: -0.01em;
}

/* Timezone Cards */
.timezone-list {
    display: flex;
    gap: 1rem;
}

.timezone-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 2rem;
    min-width: 220px;
    width: 220px;
    height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.timezone-card:hover {
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 4px 16px rgba(102, 126, 234, 0.2);
    transform: translateY(-8px) scale(1.02);
}

.timezone-card.selected {
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 
        0 20px 40px rgba(102, 126, 234, 0.3),
        0 4px 16px rgba(102, 126, 234, 0.4);
    transform: translateY(-8px) scale(1.02);
}

.timezone-card.selected .card-header h3,
.timezone-card.selected .time,
.timezone-card.selected .date {
    color: #1f2937;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    font-weight: 600;
}

.timezone-card.selected::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 22px;
    z-index: -1;
    opacity: 0.8;
}

.local-time-card.selected {
    border: 2px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.local-time-card.selected .card-header h3,
.local-time-card.selected .time,
.local-time-card.selected .date {
    color: white;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

.local-time-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    min-width: 240px;
    width: 240px;
    height: 220px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.local-time-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.local-time-card .card-header h3,
.local-time-card .time,
.local-time-card .date {
    color: white;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

.local-time-card .status-indicator {
    background-color: rgba(255, 255, 255, 0.3);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #111827;
    margin: 0;
}

.time-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.time-info .time {
    font-size: 1.75rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.time-info .date {
    font-size: 0.875rem;
    color: #6b7280;
    line-height: 1.3;
}

/* Add Timezone Card */
.add-timezone-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    border: 2px dashed rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    min-width: 220px;
    width: 220px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.add-timezone-card:hover {
    border-color: rgba(102, 126, 234, 0.6);
    background-color: rgba(102, 126, 234, 0.05);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 20px 40px rgba(102, 126, 234, 0.2),
        0 4px 16px rgba(102, 126, 234, 0.3);
}

.add-card-content {
    text-align: center;
    color: #6b7280;
}

.add-icon {
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 0.75rem;
    color: #9ca3af;
    transition: all 0.3s ease;
}

.add-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: #6b7280;
}

.add-timezone-card:hover .add-icon {
    color: #667eea;
    transform: scale(1.1);
}

.add-timezone-card:hover .add-text {
    color: #667eea;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-indicator.working {
    background-color: #10b981;
    animation: pulse 2s infinite;
}

.status-indicator.after-hours {
    background-color: #f59e0b;
}

.status-indicator.sleeping {
    background-color: #6b7280;
}

.remove-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    font-size: 1rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.remove-button:hover {
    background-color: #fef2f2;
    color: #dc2626;
    transform: scale(1.1);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 3rem 0;
    margin-top: 4rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    text-align: right;
}

.footer-links p {
    font-size: 0.875rem;
    color: #6b7280;
}

.footer-links a {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .header-left {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }
    
    .header-right {
        justify-content: center;
        width: 320px;
        max-width: 320px;
    }
    
    .ad-slot.leaderboard {
        width: 320px;
        height: 50px;
        max-width: 320px;
        max-height: 50px;
    }
    
    .meeting-planner {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .meeting-planner-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .add-city-container {
        max-width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        text-align: center;
    }
    
    .timezone-cards-container {
        padding: 0.5rem 0;
    }
    
    .timezone-card,
    .add-timezone-card {
        min-width: 180px;
        width: 180px;
        height: 180px;
        padding: 1.5rem;
    }
    
    .local-time-card {
        min-width: 200px;
        width: 200px;
        height: 200px;
    }
    
    .time-info .time {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 1rem 0.5rem;
    }
    
    .control-area {
        padding: 1.5rem;
    }
    
    .timezone-display {
        padding: 1.5rem;
    }
    
    .time-display {
        font-size: 1.5rem;
    }
    
    .time-info .time {
        font-size: 1.25rem;
    }
    
    .meeting-planner-section {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .meeting-planner {
        gap: 0.75rem;
    }
    
    .current-time-display h2 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .time-display {
        font-size: 1.75rem;
    }
    
    .slider-label {
        font-size: 0.875rem;
        margin-bottom: 0.5rem;
    }
    
    .selected-time-display {
        font-size: 1.125rem;
        margin-top: 0.25rem;
    }
}

/* Dark Mode Styles */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: var(--text-primary);
}

[data-theme="dark"] body::before {
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(147, 51, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
}

[data-theme="dark"] .header {
    background: linear-gradient(135deg, 
        rgba(15, 23, 42, 0.9) 0%, 
        rgba(30, 41, 59, 0.8) 25%,
        rgba(51, 65, 85, 0.7) 50%,
        rgba(30, 41, 59, 0.8) 75%,
        rgba(15, 23, 42, 0.9) 100%);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .header::before {
    background: 
        linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 51, 234, 0.1) 100%),
        radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(147, 51, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
}

[data-theme="dark"] .header::after {
    background: 
        linear-gradient(90deg, 
            transparent 0%, 
            rgba(255, 255, 255, 0.05) 25%, 
            rgba(255, 255, 255, 0.02) 50%, 
            rgba(255, 255, 255, 0.05) 75%, 
            transparent 100%);
}


[data-theme="dark"] .timezone-card {
    background: rgba(30, 41, 59, 0.9);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .timezone-card .card-header h3,
[data-theme="dark"] .timezone-card .time,
[data-theme="dark"] .timezone-card .date {
    color: var(--text-primary);
}

[data-theme="dark"] .timezone-card.selected .card-header h3,
[data-theme="dark"] .timezone-card.selected .time,
[data-theme="dark"] .timezone-card.selected .date {
    color: #f1f5f9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

[data-theme="dark"] .local-time-card .card-header h3,
[data-theme="dark"] .local-time-card .time,
[data-theme="dark"] .local-time-card .date {
    color: white;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    font-weight: 600;
}

[data-theme="dark"] .add-timezone-card {
    background: rgba(30, 41, 59, 0.6);
    border: 2px dashed rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .meeting-planner-section {
    background: rgba(30, 41, 59, 0.9);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .current-time-display h2,
[data-theme="dark"] .slider-label {
    color: var(--text-primary);
}

[data-theme="dark"] .date-display {
    color: var(--text-secondary);
}

[data-theme="dark"] .footer {
    background: rgba(15, 23, 42, 0.9);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .footer-links p {
    color: var(--text-secondary);
}

[data-theme="dark"] .theme-toggle {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(30, 41, 59, 0.9);
}