:root {
            --primary-color: #4361ee;
            --secondary-color: #3f37c9;
            --accent-color: #4895ef;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --success-color: #4cc9f0;
            --warning-color: #f8961e;
            --danger-color: #f72585;
            --holiday-color: #f72585;
            --school-color: #7209b7;
            --study-color: #38b000;
            --bg-color: #f5f7fa;
            --card-bg: #ffffff;
            --text-color: #212529;
            --text-muted: #6c757d;
            --border-color: #dee2e6;
        }
        
        .dark-mode {
            --primary-color: #4895ef;
            --secondary-color: #4361ee;
            --accent-color: #3f37c9;
            --light-color: #343a40;
            --dark-color: #f8f9fa;
            --bg-color: #121212;
            --card-bg: #1e1e1e;
            --text-color: #f8f9fa;
            --text-muted: #adb5bd;
            --border-color: #343a40;
            --holiday-color: #ff6b6b;
            --school-color: #9d4edd;
            --study-color: #70e000;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            transition: all 0.3s ease;
        }
        
        .container {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 20px;
        }
        
        .header {
            text-align: center;
            margin-bottom: 2rem;
            position: relative;
        }
        
        .header h1 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        
        .header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        
        .world-clock {
            position: absolute;
            right: 0;
            top: 0;
            background: var(--card-bg);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .world-clock select {
            border: 1px solid var(--border-color);
            padding: 0.3rem;
            border-radius: 4px;
            background: var(--card-bg);
            color: var(--text-color);
        }
        
        .current-time {
            font-weight: 500;
            font-size: 1.1rem;
        }
        
        .schedule-container {
            background: var(--card-bg);
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            overflow: hidden;
            margin-bottom: 2rem;
            transition: all 0.3s ease;
        }
        
        .schedule-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem;
            background-color: var(--primary-color);
            color: white;
        }
        
        .schedule-nav {
            display: flex;
            gap: 1rem;
        }
        
        .schedule-nav button {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .schedule-nav button:hover {
            background: rgba(255, 255, 255, 0.3);
        }
        
        .schedule-week {
            display: flex;
            border-bottom: 1px solid var(--border-color);
        }
        
        .schedule-day {
            flex: 1;
            text-align: center;
            padding: 1rem 0;
            font-weight: 600;
            color: var(--text-color);
            cursor: pointer;
            transition: all 0.2s ease;
            position: relative;
        }
        
        .schedule-day:hover {
            background-color: rgba(0,0,0,0.02);
        }
        
        .schedule-day.today {
            color: var(--primary-color);
        }
        
        .schedule-day.holiday {
            color: var(--holiday-color);
        }
        
        .schedule-day.today::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 50%;
            height: 3px;
            background-color: var(--primary-color);
        }
        
        .weather-icon {
            width: 30px;
            height: 30px;
            margin: 5px auto;
            display: block;
        }
        
        .schedule-grid {
            display: grid;
            grid-template-columns: 100px repeat(7, 1fr);
        }
        
        .time-slot {
            padding: 1rem;
            border-right: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        
        .schedule-slot {
            padding: 0.5rem;
            border-right: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            min-height: 80px;
            position: relative;
        }
        
        .event {
            background-color: var(--accent-color);
            color: white;
            padding: 0.5rem;
            border-radius: 5px;
            margin-bottom: 0.25rem;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s ease;
            overflow: hidden;
            position: relative;
        }
        
        .event:hover {
            opacity: 0.9;
            transform: translateY(-2px);
            box-shadow: 0 3px 8px rgba(0,0,0,0.1);
        }
        
        .event.meeting {
            background-color: var(--primary-color);
        }
        
        .event.work {
            background-color: var(--success-color);
        }
        
        .event.break {
            background-color: var(--warning-color);
        }
        
        .event.personal {
            background-color: var(--danger-color);
        }
        
        .event.reminder {
            background-color: #7209b7;
        }
        
        .event.holiday {
            background-color: var(--holiday-color);
        }
        
        .event.school {
            background-color: var(--school-color);
        }
        
        .event.study {
            background-color: var(--study-color);
        }
        
        .event-title {
            font-weight: 600;
            margin-bottom: 0.2rem;
            display: flex;
            justify-content: space-between;
        }
        
        .event-time {
            font-size: 0.75rem;
            opacity: 0.9;
        }
        
        .event-actions {
            position: absolute;
            top: 5px;
            right: 5px;
            display: none;
        }
        
        .event:hover .event-actions {
            display: flex;
            gap: 3px;
        }
        
        .event-actions button {
            background: rgba(255,255,255,0.2);
            border: none;
            color: white;
            width: 20px;
            height: 20px;
            border-radius: 3px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 0.7rem;
        }
        
        .event-actions button:hover {
            background: rgba(255,255,255,0.3);
        }
        
        .add-event {
            position: absolute;
            bottom: 0.5rem;
            right: 0.5rem;
            background: rgba(0, 0, 0, 0.05);
            border: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text-muted);
            transition: all 0.2s ease;
        }
        
        .add-event:hover {
            background: rgba(0, 0, 0, 0.1);
            color: var(--text-color);
        }
        
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        
        .modal-content {
            background-color: var(--card-bg);
            padding: 2rem;
            border-radius: 10px;
            width: 90%;
            max-width: 500px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            max-height: 90vh;
            overflow-y: auto;
        }
        
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
            position: sticky;
            top: 0;
            background: var(--card-bg);
            padding: 1rem 0;
            z-index: 1;
        }
        
        .modal-header h3 {
            color: var(--primary-color);
        }
        
        .close-modal {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-muted);
        }
        
        .form-group {
            margin-bottom: 1rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        
        .form-group input, 
        .form-group select, 
        .form-group textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            font-size: 1rem;
            background: var(--card-bg);
            color: var(--text-color);
        }
        
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        
        .form-actions {
            display: flex;
            justify-content: flex-end;
            gap: 1rem;
            margin-top: 1.5rem;
            position: sticky;
            bottom: 0;
            background: var(--card-bg);
            padding: 1rem 0;
        }
        
        .btn {
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-primary:hover {
            background-color: var(--secondary-color);
        }
        
        .btn-secondary {
            background-color: var(--text-muted);
            color: white;
        }
        
        .btn-secondary:hover {
            background-color: #5a6268;
        }
        
        .event-category {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }
        
        .category-option {
            flex: 1 0 calc(33% - 10px);
            text-align: center;
            padding: 0.5rem;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.2s ease;
            background: var(--card-bg);
            margin-bottom: 0.5rem;
        }
        
        .category-option:hover {
            background-color: var(--light-color);
        }
        
        .category-option.selected {
            border-color: var(--primary-color);
            background-color: rgba(67, 97, 238, 0.1);
        }
        
        .category-option.meeting {
            border-left: 3px solid var(--primary-color);
        }
        
        .category-option.work {
            border-left: 3px solid var(--success-color);
        }
        
        .category-option.break {
            border-left: 3px solid var(--warning-color);
        }
        
        .category-option.personal {
            border-left: 3px solid var(--danger-color);
        }
        
        .category-option.reminder {
            border-left: 3px solid #7209b7;
        }
        
        .category-option.holiday {
            border-left: 3px solid var(--holiday-color);
        }
        
        .category-option.school {
            border-left: 3px solid var(--school-color);
        }
        
        .category-option.study {
            border-left: 3px solid var(--study-color);
        }
        
        .stats-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .stat-card {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
            gap: 1rem;
            transition: all 0.3s ease;
        }
        
        .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: white;
        }
        
        .stat-icon.meetings {
            background-color: var(--primary-color);
        }
        
        .stat-icon.work {
            background-color: var(--success-color);
        }
        
        .stat-icon.personal {
            background-color: var(--danger-color);
        }
        
        .stat-icon.reminders {
            background-color: #7209b7;
        }
        
        .stat-icon.holidays {
            background-color: var(--holiday-color);
        }
        
        .stat-icon.school {
            background-color: var(--school-color);
        }
        
        .stat-icon.study {
            background-color: var(--study-color);
        }
        
        .stat-info h3 {
            font-size: 1.5rem;
            margin-bottom: 0.2rem;
        }
        
        .stat-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .quick-actions {
            display: flex;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        
        .quick-action-btn {
            flex: 1 0 calc(20% - 10px);
            min-width: 150px;
            background: var(--card-bg);
            border: none;
            border-radius: 8px;
            padding: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            cursor: pointer;
            transition: all 0.2s ease;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            font-weight: 500;
            color: var(--text-color);
        }
        
        .quick-action-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .quick-action-btn i {
            font-size: 1.2rem;
        }
        
        /* Image search modal */
        .image-search-container {
            margin-top: 1rem;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }
        
        .image-search-results {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.5rem;
            margin-top: 1rem;
            max-height: 200px;
            overflow-y: auto;
        }
        
        .image-result {
            width: 100%;
            height: 80px;
            object-fit: cover;
            cursor: pointer;
            border-radius: 4px;
            transition: transform 0.2s;
        }
        
        .image-result:hover {
            transform: scale(1.05);
        }
        
        .selected-image {
            margin-top: 1rem;
            max-width: 100%;
            max-height: 150px;
            display: none;
            border-radius: 5px;
        }
        
        /* Weather display */
        .weather-display {
            font-size: 0.8rem;
            margin-top: 0.5rem;
        }
        
        .weather-temp {
            font-weight: bold;
        }
        
        /* Event details modal */
        .event-details {
            margin-top: 1rem;
        }
        
        .event-detail-item {
            margin-bottom: 0.5rem;
        }
        
        .event-detail-label {
            font-weight: 600;
            color: var(--primary-color);
        }
        
        .event-image {
            max-width: 100%;
            max-height: 200px;
            margin: 1rem 0;
            border-radius: 5px;
            display: none;
        }
        
        /* Notification */
        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 1rem;
            border-radius: 5px;
            color: white;
            background-color: var(--primary-color);
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            transform: translateX(200%);
            transition: transform 0.3s ease;
            z-index: 2000;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .notification.show {
            transform: translateX(0);
        }
        
        .notification.success {
            background-color: var(--success-color);
        }
        
        .notification.error {
            background-color: var(--danger-color);
        }
        
        .notification.warning {
            background-color: var(--warning-color);
        }
        
        /* Theme selector */
        .theme-selector {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 100;
        }
        
        .theme-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            background: var(--primary-color);
            color: white;
        }
        
        .theme-options {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--card-bg);
            border-radius: 10px;
            padding: 1rem;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            display: none;
            flex-direction: column;
            gap: 0.5rem;
            min-width: 150px;
        }
        
        .theme-options.show {
            display: flex;
        }
        
        .theme-option {
            padding: 0.5rem;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        
        .theme-option:hover {
            background: var(--light-color);
        }
        
        /* Date picker */
        .flatpickr-input {
            background: var(--card-bg) !important;
            color: var(--text-color) !important;
            border: 1px solid var(--border-color) !important;
        }
        
        /* Holiday styling */
        .holiday-mark {
            position: absolute;
            top: 5px;
            right: 5px;
            font-size: 0.7rem;
            color: var(--holiday-color);
            font-weight: bold;
        }
        
        /* Music player */
        .music-player {
            position: fixed;
            bottom: 20px;
            left: 20px;
            background: var(--card-bg);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            display: flex;
            align-items: center;
            gap: 10px;
            z-index: 100;
        }
        
        .music-control {
            background: none;
            border: none;
            color: var(--primary-color);
            font-size: 1.2rem;
            cursor: pointer;
        }
        
        .music-info {
            font-size: 0.8rem;
            margin-right: 10px;
        }
        
        /* Gif search */
        .gif-search-container {
            margin-top: 1rem;
        }
        
        .gif-search-results {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.5rem;
            margin-top: 1rem;
            max-height: 200px;
            overflow-y: auto;
        }
        
        .gif-result {
            width: 100%;
            height: 100px;
            object-fit: cover;
            cursor: pointer;
            border-radius: 4px;
        }
        
        /* Iframe popup */
        .iframe-popup {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            z-index: 2000;
            display: none;
            justify-content: center;
            align-items: center;
        }
        
        .iframe-container {
            width: 90%;
            height: 90%;
            background: var(--card-bg);
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }
        
        .iframe-close {
            position: absolute;
            top: 10px;
            right: 10px;
            background: var(--danger-color);
            color: white;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 2;
        }
        
        .iframe-content {
            width: 100%;
            height: 100%;
            border: none;
        }
        
        /* API key input with copy */
        .input-with-copy {
            display: flex;
            gap: 5px;
            margin-top: 5px;
        }
        
        .input-with-copy input {
            flex: 1;
        }
        
        .copy-btn {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0 10px;
            border-radius: 4px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .copy-btn:hover {
            background: var(--secondary-color);
        }
        
        /* Schedule type selector */
        .schedule-type-selector {
            display: flex;
            margin-bottom: 1rem;
            border-bottom: 1px solid var(--border-color);
        }
        
        .schedule-type-btn {
            flex: 1;
            padding: 0.5rem;
            text-align: center;
            cursor: pointer;
            border-bottom: 3px solid transparent;
        }
        
        .schedule-type-btn.active {
            border-bottom-color: var(--primary-color);
            font-weight: bold;
        }
        
        /* Responsive styles */
@media (max-width: 768px) {
    .container {
        margin: 1rem auto;
        padding: 0 10px;
    }
    
    .header {
        padding-top: 2rem;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .header p {
        font-size: 0.9rem;
    }
    
    .world-clock {
        position: static;
        margin: 0.5rem auto;
        padding: 0.3rem 0.5rem;
        width: fit-content;
    }
    
    .current-time {
        font-size: 0.9rem;
    }
    
    .world-clock select {
        padding: 0.2rem;
        font-size: 0.8rem;
    }
    
    .schedule-header {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .schedule-nav {
        width: 100%;
        justify-content: space-between;
    }
    
    .schedule-nav button {
        padding: 0.3rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .schedule-week {
        font-size: 0.8rem;
    }
    
    .schedule-day {
        padding: 0.5rem 0;
    }
    
    .weather-icon {
        width: 20px;
        height: 20px;
    }
    
    .schedule-grid {
        grid-template-columns: 50px repeat(7, 1fr);
        font-size: 0.7rem;
    }
    
    .time-slot {
        padding: 0.3rem;
        font-size: 0.7rem;
    }
    
    .schedule-slot {
        min-height: 60px;
        padding: 0.2rem;
    }
    
    .event {
        font-size: 0.6rem;
        padding: 0.2rem;
        margin-bottom: 0.1rem;
    }
    
    .event-title {
        font-size: 0.65rem;
    }
    
    .event-time {
        font-size: 0.6rem;
    }
    
    .add-event {
        width: 18px;
        height: 18px;
        font-size: 0.7rem;
    }
    
    .stats-container {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .stat-info h3 {
        font-size: 1.2rem;
    }
    
    .stat-info p {
        font-size: 0.8rem;
    }
    
    .quick-actions {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .quick-action-btn {
        padding: 0.7rem;
        font-size: 0.8rem;
        min-width: 120px;
    }
    
    .modal-content {
        padding: 1rem;
        width: 95%;
    }
    
    .form-group input, 
    .form-group select, 
    .form-group textarea {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .event-category {
        flex-wrap: wrap;
    }
    
    .category-option {
        flex: 1 0 calc(50% - 10px);
        font-size: 0.8rem;
        padding: 0.3rem;
    }
    
    .image-search-results {
        grid-template-columns: repeat(2, 1fr);
        max-height: 150px;
    }
    
    .image-result {
        height: 60px;
    }
    
    .theme-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .theme-options {
        min-width: 120px;
        padding: 0.5rem;
    }
    
    .holiday-mark {
        font-size: 0.6rem;
    }
    
    .music-player {
        bottom: 80px;
        left: 10px;
        padding: 0.3rem 0.8rem;
    }
    
    .music-info {
        display: none;
    }
}

@media (max-width: 480px) {
    .schedule-grid {
        grid-template-columns: 40px repeat(7, 1fr);
    }
    
    .time-slot {
        padding: 0.2rem;
        font-size: 0.6rem;
    }
    
    .schedule-slot {
        min-height: 50px;
    }
    
    .event {
        font-size: 0.55rem;
    }
    
    .event-title {
        flex-direction: column;
        gap: 0.1rem;
    }
    
    .category-option {
        flex: 1 0 100%;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .quick-action-btn {
        flex: 1 0 100%;
    }
}