:root {
    --primary-color: #e60012;
    --primary-light: #ff3333;
    --primary-dark: #cc0010;
    --secondary-color: #f8f9fa;
    --accent-color: #ffd700;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    --border-color: #dee2e6;
    --border-radius: 12px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.header-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.title i {
    font-size: 2rem;
    color: var(--accent-color);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Controls */
.controls {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    align-items: center;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 15px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
}

.language-toggle label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.language-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.search-container {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-container i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(230, 0, 18, 0.1);
}

.filter-select {
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-light);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

/* Main Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.count-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: auto;
}

/* Events Section */
.events-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    height: fit-content;
}

.events-list {
    max-height: 600px;
    overflow-y: auto;
    padding-right: 10px;
}

.events-list::-webkit-scrollbar {
    width: 6px;
}

.events-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.events-list::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.event-item {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.event-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.event-item.selected {
    border-color: var(--primary-color);
    background: rgba(230, 0, 18, 0.05);
}

.event-code {
    font-family: 'Monaco', 'Menlo', monospace;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.event-name {
    font-weight: 500;
    margin-bottom: 8px;
    line-height: 1.4;
}

.event-name-original {
    font-weight: 500;
    margin-bottom: 4px;
    line-height: 1.4;
    color: var(--text-primary);
}

.event-name-translated {
    font-weight: 400;
    font-size: 0.9rem;
    line-height: 1.3;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-style: italic;
}

.event-duration {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Selected Section */
.selected-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 20px;
}

.selected-events {
    min-height: 300px;
    margin-bottom: 25px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--border-color);
}

.empty-subtitle {
    font-size: 0.9rem;
    margin-top: 5px;
}

.selected-item {
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: 15px;
    margin-bottom: 12px;
    cursor: grab;
    transition: var(--transition);
    position: relative;
}

.selected-item:active {
    cursor: grabbing;
}

.selected-item.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

.selected-item .order-number {
    position: absolute;
    top: -8px;
    left: -8px;
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

.selected-item .remove-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.selected-item .remove-btn:hover {
    background: #c82333;
    transform: scale(1.1);
}

/* Output Section */
.output-section {
    border-top: 2px solid var(--border-color);
    padding-top: 20px;
}

.output-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.output-container {
    position: relative;
    margin-bottom: 15px;
}

#eventCodes {
    width: 100%;
    min-height: 80px;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
    resize: vertical;
    background: #f8f9fa;
    margin-bottom: 10px;
}

.output-actions {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.output-actions button {
    padding: 6px 12px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.output-actions .btn-secondary {
    background: #6c757d;
    color: white;
}

.output-actions .btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.output-actions .btn-info {
    background: #17a2b8;
    color: white;
}

.output-actions .btn-info:hover {
    background: #138496;
    transform: translateY(-1px);
}

.output-actions .btn-warning {
    background: #ffc107;
    color: #212529;
}

.output-actions .btn-warning:hover {
    background: #e0a800;
    transform: translateY(-1px);
}

#eventCodes:focus {
    outline: none;
    border-color: var(--primary-color);
}

#copyButton {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 8px 12px;
    font-size: 0.8rem;
}

.stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 25px;
}

/* Data Management Section */
.data-management {
    border-top: 2px solid var(--border-color);
    padding-top: 20px;
}

.data-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.data-controls .btn {
    justify-content: center;
}

.import-container {
    position: relative;
}

.import-textarea {
    width: 100%;
    min-height: 60px;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8rem;
    resize: vertical;
    background: #f8f9fa;
}

.import-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.import-textarea::placeholder {
    color: var(--text-secondary);
    font-style: italic;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat span:last-child {
    font-weight: 600;
    color: var(--primary-color);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #28a745;
    color: white;
    padding: 15px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: #dc3545;
}

.toast.warning {
    background: #ffc107;
    color: #212529;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .selected-section {
        position: static;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .title {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-container {
        min-width: auto;
    }
    
    .events-section,
    .selected-section {
        padding: 20px;
    }
    
    .data-controls {
        gap: 10px;
    }
    
    .data-controls .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .toast {
        bottom: 20px;
        right: 20px;
        left: 20px;
    }
}

/* Drag and Drop Styles */
.drag-over {
    border-color: var(--accent-color) !important;
    background: rgba(255, 215, 0, 0.1) !important;
}

.drop-indicator {
    height: 2px;
    background: var(--accent-color);
    margin: 5px 0;
    border-radius: 1px;
    opacity: 0;
    transition: opacity 0.2s;
}

.drop-indicator.show {
    opacity: 1;
}