/* ========================================
   ADMIN CSS - Dashboard Interface
   ======================================== */

:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #4a5568;
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --info: #4299e1;
    --light: #f7fafc;
    --dark: #1a202c;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --sidebar-width: 260px;
    --header-height: 64px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--light);
    color: var(--dark);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Admin Layout */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
}

.sidebar-logo i {
    font-size: 24px;
    color: var(--primary);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-link.active {
    background: rgba(102, 126, 234, 0.2);
    color: white;
    border-left-color: var(--primary);
}

.nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
    color: white;
}

.user-role {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.logout-btn {
    background: none;
    color: white;
    border: none;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: opacity 0.2s;
}

.logout-btn:hover {
    opacity: 0.7;
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-header {
    height: var(--header-height);
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-content {
    flex: 1;
    padding: 24px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
}

.alert-error {
    background: #fed7d7;
    color: #c53030;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.5;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--light);
    color: var(--secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--white);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-icon {
    padding: 8px;
    min-width: 36px;
}

.btn-block {
    width: 100%;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue { background: #ebf4ff; color: #4299e1; }
.stat-icon.green { background: #c6f6d5; color: #48bb78; }
.stat-icon.purple { background: #e9d8fd; color: #805ad5; }
.stat-icon.orange { background: #feebc8; color: #ed8936; }

.stat-value {
    font-size: 28px;
    font-weight: 700;
    display: block;
}

.stat-label {
    color: var(--secondary);
    font-size: 14px;
}

/* Dashboard Layout */
.dashboard-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.dashboard-row .card.full-width {
    grid-column: span 2;
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-weight: 600;
    color: var(--secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tbody tr:hover {
    background: var(--light);
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.active {
    background: #c6f6d5;
    color: #22543d;
}

.status-badge.inactive {
    background: #fed7d7;
    color: #c53030;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 4px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state i {
    font-size: 64px;
    color: var(--border);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--secondary);
    margin-bottom: 20px;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 24px;
    margin-bottom: 4px;
}

.page-header .subtitle {
    color: var(--secondary);
    font-size: 14px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 8px;
}

.back-link:hover {
    color: var(--primary);
}

/* Forms */
.form-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
}

.form-page {
    max-width: 1200px;
}

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

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark);
}

.form-label .required {
    color: var(--danger);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.help-text {
    display: block;
    font-size: 12px;
    color: var(--secondary);
    margin-top: 6px;
}

.error-text {
    display: block;
    font-size: 12px;
    color: var(--danger);
    margin-top: 6px;
}

/* Toggle Switch */
.toggle-switch {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.toggle-switch input {
    display: none;
}

.toggle-slider {
    width: 48px;
    height: 26px;
    background: var(--border);
    border-radius: 100px;
    position: relative;
    transition: background 0.2s;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle-switch input:checked + .toggle-slider::after {
    transform: translateX(22px);
}

/* Form Sidebar */
.form-sidebar .card {
    margin-bottom: 16px;
}

.form-actions-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--dark);
    transition: all 0.2s;
}

.quick-action-btn:hover {
    background: var(--white);
    box-shadow: var(--shadow);
}

.quick-action-btn i {
    font-size: 24px;
    color: var(--primary);
}

/* Status List */
.status-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-indicator.online { background: var(--success); }
.status-indicator.offline { background: var(--danger); }

.status-name {
    flex: 1;
}

.status-text {
    color: var(--secondary);
    font-size: 13px;
}

/* Top List */
.top-list {
    display: flex;
    flex-direction: column;
}

.top-list-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.top-list-item:last-child {
    border-bottom: none;
}

.item-count {
    color: var(--secondary);
    font-size: 13px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 480px;
    width: 100%;
}

.modal-content h3 {
    margin-bottom: 12px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Code/Identifier */
.identifier {
    font-family: 'Monaco', 'Consolas', monospace;
    background: var(--light);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.copy-btn {
    opacity: 0;
    transition: opacity 0.2s;
}

tr:hover .copy-btn {
    opacity: 1;
}

/* No Data */
.no-data {
    text-align: center;
    color: var(--secondary);
    padding: 40px 20px;
}

/* Period Select */
.period-select {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-row {
        grid-template-columns: 1fr;
    }
    
    .dashboard-row .card.full-width {
        grid-column: span 1;
    }
    
    .form-layout {
        grid-template-columns: 1fr;
    }
    
    .form-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}