/* Admin Dashboard Base Styles */

:root {
    --admin-primary: #00217D;
    --admin-primary-dark: #001654;
    --admin-primary-light: #0033b8;
    --admin-accent: #D41125;
    --admin-success: #4caf50;
    --admin-warning: #ff9800;
    --admin-danger: #f44336;
    --admin-info: #2196f3;
    
    --admin-bg: #f5f6fa;
    --admin-card-bg: #ffffff;
    --admin-text: #2c3e50;
    --admin-text-secondary: #7f8c8d;
    --admin-border: #e0e6ed;
    
    --admin-sidebar-width: 260px;
    --admin-nav-height: 64px;
    
    --admin-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --admin-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --admin-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    --admin-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base */
* {
    box-sizing: border-box;
}

body.admin-body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--admin-text);
    background: var(--admin-bg);
    overflow-x: hidden;
}

/* Loading Screen */
.admin-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-content {
    text-align: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--admin-border);
    border-top-color: var(--admin-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 1s linear infinite;
}

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

/* Admin App Container */
.admin-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Top Navigation */
.admin-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--admin-nav-height);
    background: var(--admin-card-bg);
    box-shadow: var(--admin-shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
}

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

.nav-toggle {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--admin-transition);
    color: var(--admin-text);
}

.nav-toggle:hover {
    background: var(--admin-bg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    height: 32px;
}

.nav-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--admin-text);
}

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

.nav-btn {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--admin-transition);
    color: var(--admin-text-secondary);
    position: relative;
}

.nav-btn:hover {
    background: var(--admin-bg);
    color: var(--admin-text);
}

.notification-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--admin-danger);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 4px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--admin-transition);
    position: relative;
}

.nav-user:hover {
    background: var(--admin-bg);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.user-name {
    font-weight: 500;
    color: var(--admin-text);
    line-height: 1.2;
}

.user-role {
    font-size: 12px;
    color: var(--admin-text-secondary);
    line-height: 1.2;
}

/* User Dropdown */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--admin-card-bg);
    border-radius: 8px;
    box-shadow: var(--admin-shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--admin-transition);
}

.nav-user:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--admin-text);
    text-decoration: none;
    transition: var(--admin-transition);
}

.dropdown-item:hover {
    background: var(--admin-bg);
}

.dropdown-item .material-icons {
    font-size: 20px;
    color: var(--admin-text-secondary);
}

.user-dropdown hr {
    margin: 8px 0;
    border: none;
    border-top: 1px solid var(--admin-border);
}

/* Main Container */
.admin-container {
    display: flex;
    margin-top: var(--admin-nav-height);
    min-height: calc(100vh - var(--admin-nav-height));
}

/* Sidebar */
.admin-sidebar {
    position: fixed;
    left: 0;
    top: var(--admin-nav-height);
    bottom: 0;
    width: var(--admin-sidebar-width);
    background: var(--admin-card-bg);
    border-right: 1px solid var(--admin-border);
    overflow-y: auto;
    transition: var(--admin-transition);
    z-index: 900;
}

.admin-sidebar.collapsed {
    width: 64px;
}

.sidebar-content {
    padding: 24px 0;
}

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

.menu-section {
    padding: 8px 24px;
    font-size: 12px;
    font-weight: 600;
    color: var(--admin-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 16px;
}

.menu-item {
    margin: 4px 12px;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--admin-text);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--admin-transition);
    position: relative;
}

.menu-link:hover {
    background: var(--admin-bg);
}

.menu-item.active .menu-link {
    background: rgba(0, 33, 125, 0.1);
    color: var(--admin-primary);
}

.menu-item.active .menu-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--admin-primary);
    border-radius: 0 3px 3px 0;
}

.menu-link .material-icons {
    font-size: 20px;
}

.menu-badge {
    margin-left: auto;
    background: var(--admin-primary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
}

.admin-sidebar.collapsed .menu-text,
.admin-sidebar.collapsed .menu-badge,
.admin-sidebar.collapsed .menu-section {
    display: none;
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: var(--admin-sidebar-width);
    padding: 24px;
    transition: var(--admin-transition);
}

.admin-sidebar.collapsed + .admin-main {
    margin-left: 64px;
}

/* View Container */
.admin-view {
    max-width: 1400px;
    margin: 0 auto;
}

.view-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.view-header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 600;
    color: var(--admin-text);
}

.header-actions {
    display: flex;
    gap: 12px;
}

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

.btn .material-icons {
    font-size: 20px;
}

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

.btn-primary:hover {
    background: var(--admin-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--admin-shadow-md);
}

.btn-secondary {
    background: var(--admin-bg);
    color: var(--admin-text);
}

.btn-secondary:hover {
    background: #e8e9ee;
}

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

.btn-danger:hover {
    background: #d32f2f;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--admin-card-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--admin-shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--admin-transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-shadow-md);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon .material-icons {
    font-size: 28px;
    color: white;
}

.stat-icon.users {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-icon.trees {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.stat-icon.active {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.stat-icon.storage {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.stat-content {
    flex: 1;
}

.stat-value {
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    color: var(--admin-text);
    line-height: 1;
}

.stat-label {
    margin: 4px 0 8px;
    color: var(--admin-text-secondary);
}

.stat-change {
    font-size: 13px;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--admin-success);
}

.stat-change.negative {
    color: var(--admin-danger);
}

/* Access Denied */
.access-denied {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--admin-bg);
}

.denied-content {
    text-align: center;
    max-width: 400px;
}

.denied-icon {
    font-size: 72px;
    color: var(--admin-danger);
    margin-bottom: 24px;
}

.denied-content h1 {
    font-size: 32px;
    margin: 0 0 16px;
    color: var(--admin-text);
}

.denied-content p {
    color: var(--admin-text-secondary);
    margin-bottom: 24px;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .view-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}