@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700;14..32,800&display=swap');

:root {
    --primary: #0066FF;
    --primary-hover: #0052CC;
    --primary-light: #E8F0FE;
    --success: #00C851;
    --danger: #FF4444;
    --warning: #FFBB33;
    --dark: #1A1A1A;
    --gray-50: #F8F9FA;
    --gray-100: #F1F3F5;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    --white: #FFFFFF;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.05);
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    font-size: 14px;
    line-height: 1.5;
    font-weight: 400;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--gray-100);
}

.sidebar-logo {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, #00C851 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    padding: 20px 16px;
}

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

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s;
    text-decoration: none;
}

.nav-link i {
    width: 20px;
    font-size: 16px;
    color: var(--gray-500);
}

.nav-link:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

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

.nav-link.active i {
    color: var(--primary);
}

/* Top Bar */
.top-bar {
    position: fixed;
    top: 0;
    right: 0;
    left: 260px;
    height: 64px;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 99;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    letter-spacing: -0.3px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-email {
    font-size: 13px;
    color: var(--gray-600);
}

.logout-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 18px;
    cursor: pointer;
    transition: color 0.2s;
}

.logout-btn:hover {
    color: var(--danger);
}

/* Main Content */
.main-content {
    margin-left: 260px;
    margin-top: 64px;
    padding: 32px;
    min-height: calc(100vh - 64px);
}

/* Cards */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    background: var(--white);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.card-body {
    padding: 0;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

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

.table th {
    text-align: left;
    padding: 14px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.table td {
    padding: 16px;
    font-size: 14px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: var(--gray-50);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 500;
    border-radius: 20px;
    background: var(--gray-100);
    color: var(--gray-700);
}

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

/* Buttons */
.btn {
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

.btn-sm i {
    font-size: 12px;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: all 0.2s;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,102,255,0.1);
}

/* Alerts */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #E8F5E9;
    border: 1px solid #C8E6C9;
    color: #2E7D32;
}

.alert-danger {
    background: #FFEBEE;
    border: 1px solid #FFCDD2;
    color: #C62828;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 24px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.page-link:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

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

.header-actions h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.header-actions p {
    color: var(--gray-600);
    margin: 4px 0 0 0;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    .top-bar {
        left: 0;
    }
    .main-content {
        margin-left: 0;
    }
    .header-actions {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
}