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

:root {
    --primary: #3366ff;
    --primary-dark: #2952cc;
    --primary-light: #ebf0ff;
    --secondary: #64748b;
    --bg-color: #f1f4f9;
    --bg-white: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-hint: #94a3b8;
    --border-color: #e2e8f0;
    --sidebar-width: 270px;
    --header-height: 60px;
    --card-radius: 8px;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
    --font-family: 'Inter', -apple-system, sans-serif;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
}

* {
    font-family: var(--font-family);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    overflow-x: hidden;
}

.wrapper {
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.25s ease;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 2px; }

.sidebar-logo {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    height: var(--header-height);
    flex-shrink: 0;
}

.sidebar-logo h4 {
    font-weight: 700;
    color: var(--primary);
    margin: 0;
    font-size: 1.15rem;
}

.sidebar-menu {
    padding: 12px 0;
    flex: 1;
    overflow-y: auto;
}

.menu-caption {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px 24px 4px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-top: 8px;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 10px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    gap: 10px;
    transition: background 0.15s;
}

.menu-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.menu-item.active {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.menu-item .bi {
    font-size: 1.2rem;
    min-width: 32px;
}

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

.topbar {
    height: var(--header-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 999;
}

.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

/* ---- Cards ---- */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.card-body {
    padding: 20px;
}

/* ---- Typography ---- */
.page-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

h4, h5, h6 {
    color: var(--text-primary);
}

/* ---- Tables ---- */
.table {
    font-size: 0.875rem;
    margin-bottom: 0;
}

.table thead th {
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
    white-space: nowrap;
    padding: 10px 12px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.table tbody td {
    padding: 10px 12px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table-hover tbody tr:hover {
    background-color: #f8fafc;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: #fafbfc;
}

/* ---- Buttons ---- */
.btn {
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: 6px;
    padding: 7px 18px;
    transition: all 0.15s;
}

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

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

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline-primary:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-group-sm .btn {
    padding: 4px 8px;
    font-size: 0.8rem;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 0.8rem;
}

/* ---- Forms ---- */
.form-control, .form-select {
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 0.875rem;
    padding: 7px 12px;
    transition: border-color 0.15s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(51, 102, 255, 0.12);
}

.form-label {
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-label-sm {
    font-size: 0.75rem;
}

.form-control-sm, .form-select-sm {
    padding: 4px 8px;
    font-size: 0.8rem;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* ---- Badges ---- */
.badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 3px 8px;
    border-radius: 4px;
}

/* ---- Alerts ---- */
.alert {
    border-radius: 6px;
    border: none;
    padding: 12px 16px;
    font-size: 0.875rem;
}

/* ---- Dropdowns ---- */
.dropdown-menu {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 4px;
}

.dropdown-item {
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 0.875rem;
}

.dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

/* ---- Stat Cards ---- */
.stat-card {
    padding: 20px;
}

.stat-card .stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.stat-card .stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

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

.avatar-sm {
    width: 28px;
    height: 28px;
}

.avatar-lg {
    width: 72px;
    height: 72px;
}

/* ---- Sidebar Toggle ---- */
.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
}

/* ---- Tabs ---- */
.nav-tabs {
    border-bottom: 1px solid var(--border-color);
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    border: none;
    padding: 10px 18px;
    font-size: 0.85rem;
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    background: transparent;
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    border-bottom: 2px solid transparent;
}

/* ---- Pagination ---- */
.pagination .page-link {
    color: var(--text-secondary);
    border-color: var(--border-color);
    padding: 6px 12px;
    font-size: 0.85rem;
}

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

/* ---- Misc ---- */
.progress {
    height: 6px;
    border-radius: 3px;
}

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state .bi {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.modal-content {
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 12px 20px;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

hr {
    border-color: var(--border-color);
    margin: 16px 0;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ---- Sidebar collapsed ---- */
.sidebar-collapsed .sidebar {
    width: 0;
    overflow: hidden;
    border-right: none;
}

.sidebar-collapsed .main-content {
    margin-left: 0;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .content-wrapper {
        padding: 16px;
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 999;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* ---- DataTables refinements ---- */
.dataTables_wrapper .dataTables_length select {
    padding: 2px 24px 2px 8px;
    font-size: 0.85rem;
}

.dataTables_wrapper .dataTables_filter input {
    padding: 4px 12px;
    font-size: 0.85rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

table.dataTable thead th {
    border-bottom: 1px solid var(--border-color) !important;
}

table.dataTable.no-footer {
    border-bottom: 1px solid var(--border-color) !important;
}

/* ---- Footer ---- */
footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-white);
}

/* ---- Print Styles ---- */
@media print {
    .sidebar, .topbar, footer, .btn, .btn-group, .sidebar-overlay, .no-print { display: none !important; }
    .main-content { margin-left: 0 !important; padding: 0 !important; }
    .content-wrapper { margin-left: 0 !important; padding: 0 !important; }
    .card { box-shadow: none !important; border: 1px solid #ddd !important; }
    body { background: #fff !important; font-size: 11pt; }
    .table { font-size: 9pt; }
    .badge { border: 1px solid #333; color: #000 !important; background: #fff !important; }
    .table-responsive { overflow: visible !important; }
    a[href]:after { content: none !important; }
}