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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: linear-gradient(180deg, #1a237e 0%, #283593 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo h2 {
    font-size: 1.3rem;
}

.nav-menu {
    list-style: none;
    padding: 10px 0;
}

.nav-item {
    padding: 15px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
}

.nav-item.active {
    background: rgba(255,255,255,0.15);
    border-left-color: #64b5f6;
}

.nav-item .icon {
    font-size: 1.2rem;
}

/* Main Content */
.content {
    margin-left: 250px;
    padding: 30px;
    flex: 1;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page h1 {
    color: #1a237e;
    margin-bottom: 25px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.page-header h1 {
    margin-bottom: 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.stat-card h3 {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #1a237e;
}

.stat-value.success {
    color: #2e7d32;
}

.stat-value.warning {
    color: #ed6c02;
}

/* Tables */
.data-table {
    width: 100%;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.data-table th {
    background: #f8f9fa;
    color: #333;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
}

.data-table tbody tr:hover {
    background: #f8f9fa;
}

.data-table input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, #1a237e 0%, #3949ab 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 35, 126, 0.3);
}

.btn-edit {
    background: #1976d2;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 5px;
}

.btn-delete {
    background: #d32f2f;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
}

/* Status Badges */
.status-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-pending {
    background: #fff3e0;
    color: #e65100;
}

.status-completed {
    background: #e8f5e9;
    color: #2e7d32;
}

.status-cancelled {
    background: #ffebee;
    color: #c62828;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-content h2 {
    margin-bottom: 25px;
    color: #1a237e;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: #666;
}

.close:hover {
    color: #333;
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1a237e;
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

/* Menu Management */
.menu-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.menu-section {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.menu-section h3 {
    margin-bottom: 15px;
    color: #1a237e;
}

.tag-input-container {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.tag-input-container input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
}

.tag-input-container button {
    padding: 10px 20px;
    background: #1a237e;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: #e8eaf6;
    color: #1a237e;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tag .remove {
    cursor: pointer;
    font-weight: bold;
}

/* Settlement */
.settlement-controls {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    display: flex;
    gap: 20px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.settlement-controls .form-group {
    margin-bottom: 0;
}

.settlement-summary {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.settlement-summary h2 {
    margin-bottom: 20px;
    color: #1a237e;
}

/* Recent Section */
.recent-section {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.recent-section h2 {
    margin-bottom: 20px;
    color: #1a237e;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }

    .sidebar .logo h2,
    .nav-item span:not(.icon) {
        display: none;
    }

    .content {
        margin-left: 70px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}