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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.header h1 {
    color: #4a4a4a;
    font-size: 2.5em;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.header h1 i {
    color: #667eea;
}

.subtitle {
    color: #888;
    margin-top: 5px;
    font-size: 0.9em;
}

.controls {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.control-group {
    flex: 1;
    min-width: 200px;
}

.control-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
    font-size: 0.9em;
}

.control-group input {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.control-group input:focus {
    outline: none;
    border-color: #667eea;
}

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

.stat-item {
    background: #f8f9fa;
    padding: 10px 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.stat-label {
    color: #666;
    font-weight: 600;
}

.stat-value {
    color: #4a4a4a;
    font-weight: 700;
    font-size: 1.2em;
}

.filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 2px solid #e0e0e0;
    background: white;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.filter-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.btn {
    padding: 10px 25px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-warning {
    background: #ffc107;
    color: #333;
}

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

.btn-small {
    padding: 5px 12px;
    font-size: 0.85em;
}

.btn-danger.filter-btn {
    background: #dc3545;
    color: white;
    border-color: #dc3545;
}

.btn-success.filter-btn {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

.email-list {
    min-height: 200px;
    padding: 10px 0;
}

.email-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 15px;
}

.email-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 15px;
    transition: all 0.3s;
}

.email-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.email-card.used {
    border-left: 4px solid #dc3545;
    opacity: 0.7;
}

.email-card.available {
    border-left: 4px solid #28a745;
}

.email-address {
    font-size: 1.1em;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
    word-break: break-all;
}

.email-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 0.85em;
}

.status-badge {
    padding: 3px 12px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.85em;
}

.status-badge.used {
    background: #dc3545;
    color: white;
}

.status-badge.available {
    background: #28a745;
    color: white;
}

.date {
    color: #888;
}

.email-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.loading, .empty-state {
    text-align: center;
    padding: 50px;
    color: #888;
}

.empty-state i {
    font-size: 3em;
    margin-bottom: 15px;
    color: #ddd;
}

.empty-state .hint {
    font-size: 0.9em;
    margin-top: 5px;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 10px;
    color: white;
    font-weight: 600;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    max-width: 400px;
}

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

.notification.error {
    background: #dc3545;
}

.notification.info {
    background: #17a2b8;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .control-group {
        min-width: 100%;
    }
    
    .email-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        gap: 10px;
    }
    
    .stat-item {
        flex: 1;
        min-width: 100px;
    }
}