/* Reset e Base */
* {
    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%);
    color: #333;
    line-height: 1.6;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.sidebar-header h2 {
    color: #667eea;
    font-size: 1.5rem;
    font-weight: 700;
}

.sidebar-header i {
    margin-right: 0.5rem;
}

.sidebar-menu {
    list-style: none;
    padding: 1rem 0;
}

.menu-item {
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-left-color: #667eea;
}

.menu-item.active {
    background: rgba(102, 126, 234, 0.15);
    border-left-color: #667eea;
    color: #667eea;
}

.menu-item i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 2rem;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    color: #333;
    font-size: 1.75rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
}

.user-info i {
    font-size: 1.5rem;
    color: #667eea;
}

/* Content */
.content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: #666;
    font-size: 0.9rem;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #f8f9fa;
    color: #666;
    border: 1px solid #dee2e6;
}

.btn-secondary:hover {
    background: #e9ecef;
}

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

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
}

/* Tables */
.table-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.data-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* Status Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-ativo {
    background: #d4edda;
    color: #155724;
}

.status-inativo {
    background: #f8d7da;
    color: #721c24;
}

.status-pendente {
    background: #fff3cd;
    color: #856404;
}

.status-pago {
    background: #d4edda;
    color: #155724;
}

.status-vencido {
    background: #f8d7da;
    color: #721c24;
}

.status-enviado {
    background: #cce5ff;
    color: #004085;
}

.status-entregue {
    background: #d4edda;
    color: #155724;
}

.status-lido {
    background: #e2e3e5;
    color: #383d41;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filters select {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 15px 15px 0 0;
}

.modal-header h3 {
    margin: 0;
    font-weight: 600;
}

.close {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

/* Forms */
form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Config Grid */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.config-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.config-card h3 {
    margin-bottom: 1.5rem;
    color: #333;
    font-size: 1.25rem;
    font-weight: 600;
}

/* Charts */
.dashboard-charts {
    margin-top: 2rem;
}

.chart-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.chart-container h3 {
    margin-bottom: 1.5rem;
    color: #333;
    font-size: 1.25rem;
    font-weight: 600;
}

/* QR Code Modal */
.qrcode-container {
    text-align: center;
    padding: 2rem;
}

.qrcode-container img {
    max-width: 250px;
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.qrcode-container p {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
    }
    
    .sidebar-menu {
        display: flex;
        overflow-x: auto;
        padding: 0.5rem;
    }
    
    .menu-item {
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    
    .menu-item:hover,
    .menu-item.active {
        border-left: none;
        border-bottom-color: #667eea;
    }
    
    .header {
        padding: 1rem;
    }
    
    .content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .config-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem;
    font-size: 0.8rem;
    min-width: auto;
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 1001;
    animation: slideInRight 0.3s ease;
}

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

.notification.error {
    background: #dc3545;
}

.notification.warning {
    background: #ffc107;
    color: #333;
}

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