/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #22c55e;
    --primary-light: #dcfce7;
    --primary-dark: #16a34a;
    --secondary: #64748b;
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-page: #f1f5f9;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg-page);
}

/* App Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 2rem;
    transition: margin-left 0.2s ease;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width 0.2s ease;
}

.sidebar-header {
    padding: 1.25rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

.sidebar-toggle {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: all 0.15s;
}

.sidebar-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

.sidebar-nav {
    flex: 1;
    padding: 0.5rem 0;
    overflow-y: auto;
}

.nav-section-label {
    padding: 1.25rem 1rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1rem;
    margin: 0.125rem 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.15s;
}

.nav-item:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.nav-item.active .nav-icon {
    color: var(--primary);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 18px;
    height: 18px;
}

.nav-text {
    flex: 1;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border);
}

.user-info-compact {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.logout-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.15s;
}

.logout-link:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

/* Sidebar Collapsed State */
.sidebar.is-collapsed {
    width: 72px;
}

.sidebar.is-collapsed ~ .main-content {
    margin-left: 72px;
}

.sidebar.is-collapsed .logo-text,
.sidebar.is-collapsed .nav-text,
.sidebar.is-collapsed .nav-section-label,
.sidebar.is-collapsed .user-details,
.sidebar.is-collapsed .logout-link span {
    display: none;
}

.sidebar.is-collapsed .sidebar-header {
    justify-content: center;
    padding: 1.25rem 0.5rem;
    position: relative;
}

.sidebar.is-collapsed .sidebar-logo {
    justify-content: center;
}

.sidebar.is-collapsed .sidebar-toggle {
    display: flex;
    position: absolute;
    right: 0.5rem;
}

.sidebar.is-collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

.sidebar.is-collapsed .nav-item {
    justify-content: center;
    padding: 0.75rem;
    margin: 0.125rem 0.75rem;
}

.sidebar.is-collapsed .user-info-compact {
    justify-content: center;
}

.sidebar.is-collapsed .logout-link {
    justify-content: center;
    padding: 0.75rem;
}

/* Page Header */
.page-header {
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.page-header p {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.stat-icon {
    font-size: 1.5rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}

.stat-change {
    font-size: 0.75rem;
    color: var(--success);
    margin-top: 0.25rem;
}

/* Cards */
.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text);
}

/* Dashboard Content */
.dashboard-content {
    display: grid;
    gap: 1.5rem;
}

/* User Info */
.user-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
}

.info-row .label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.info-row .value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.info-row .value a {
    color: var(--primary);
    text-decoration: none;
}

.info-row .value a:hover {
    text-decoration: underline;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background: var(--bg-secondary);
    color: var(--text-light);
}

.badge-admin {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.badge-user {
    background: var(--bg-secondary);
    color: var(--text-light);
}

/* Action Grid */
.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s;
}

.action-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.action-btn .icon {
    font-size: 1.5rem;
}

/* Alerts */
.alert {
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-success {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
}

.alert-warning {
    background: #fffbeb;
    color: #d97706;
}

/* Auth Pages */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.auth-card {
    background: var(--bg);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 400px;
}

.auth-card h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.subtitle {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.auth-form {
    margin-top: 1.5rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
}

.form-group input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: all 0.15s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}

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

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

.btn-block {
    width: 100%;
}

.auth-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.auth-footer code {
    background: var(--bg-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
}

/* Table Styles */
.table-container {
    overflow-x: auto;
}

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

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.875rem;
}

th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text);
    border-bottom: 1px solid var(--border);
}

td {
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

tr:hover td {
    background: var(--bg-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}