:root {
    --panel-primary: #4f46e5;
    --panel-primary-hover: #4338ca;
    --panel-sidebar: #0f172a;
    --panel-sidebar-hover: #1e293b;
    --panel-bg: #f1f5f9;
    --panel-card: #ffffff;
    --panel-border: #e2e8f0;
    --panel-text: #0f172a;
    --panel-muted: #64748b;
    --panel-radius: 12px;
    --panel-shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 16px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
}

body.hold-transition.sidebar-mini {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--panel-bg);
    color: var(--panel-text);
}

.main-sidebar.sidebar-dark-primary {
    background: var(--panel-sidebar) !important;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.brand-link {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    padding: 1.25rem 1rem !important;
}

.brand-text {
    color: #fff !important;
    font-weight: 600 !important;
    font-size: 1.05rem !important;
    letter-spacing: -0.02em;
}

.main-header.navbar {
    background: var(--panel-card) !important;
    border-bottom: 1px solid var(--panel-border);
    box-shadow: var(--panel-shadow);
}

.main-header .nav-link {
    color: var(--panel-muted) !important;
}

.content-wrapper {
    background: var(--panel-bg) !important;
    min-height: calc(100vh - 57px);
}

.content-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--panel-text);
}

.content-header .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    font-size: 0.875rem;
}

.card {
    border: 1px solid var(--panel-border) !important;
    border-radius: var(--panel-radius) !important;
    box-shadow: var(--panel-shadow) !important;
}

.card-header {
    background: var(--panel-card) !important;
    border-bottom: 1px solid var(--panel-border) !important;
    border-radius: var(--panel-radius) var(--panel-radius) 0 0 !important;
}

.card-primary:not(.card-outline) > .card-header {
    background: linear-gradient(135deg, var(--panel-primary), #6366f1) !important;
    border: none !important;
}

.card-primary .card-title {
    font-weight: 600;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background: #f8fafc;
    border-bottom: 1px solid var(--panel-border) !important;
    color: var(--panel-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.table tbody td {
    vertical-align: middle;
}

.btn-primary {
    background: var(--panel-primary) !important;
    border-color: var(--panel-primary) !important;
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.btn-primary:hover {
    background: var(--panel-primary-hover) !important;
    border-color: var(--panel-primary-hover) !important;
}

.btn-warning, .btn-danger, .btn-secondary {
    border-radius: 8px;
    font-weight: 500;
}

.nav-sidebar .nav-link {
    border-radius: 8px;
    margin: 2px 0.5rem;
    color: #94a3b8 !important;
    transition: all 0.15s ease;
}

.nav-sidebar .nav-link:hover,
.nav-sidebar .nav-link.active {
    background: var(--panel-sidebar-hover) !important;
    color: #fff !important;
}

.nav-sidebar .nav-link.active {
    background: var(--panel-primary) !important;
}

.nav-sidebar .nav-icon {
    color: inherit !important;
}

.main-footer {
    background: var(--panel-card) !important;
    border-top: 1px solid var(--panel-border);
    color: var(--panel-muted);
    font-size: 0.875rem;
}

.panel-alert {
    border: none;
    border-radius: 10px;
    font-size: 0.9rem;
}

.panel-page-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.panel-table-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.panel-table-actions form {
    margin: 0;
}

.panel-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: #eef2ff;
    color: var(--panel-primary);
}

/* Login */
body.login-page {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.login-logo a {
    color: #fff !important;
    font-weight: 700;
    font-size: 1.75rem;
    letter-spacing: -0.03em;
}

.login-card-body {
    border-radius: var(--panel-radius);
    padding: 2rem !important;
}

.login-box .card {
    border: none !important;
    overflow: hidden;
}

.login-box .form-control {
    border-radius: 8px;
    border-color: var(--panel-border);
    padding: 0.65rem 0.9rem;
}

.login-box .input-group-text {
    border-radius: 0 8px 8px 0;
    background: #f8fafc;
    border-color: var(--panel-border);
}

.login-box .btn-primary {
    padding: 0.7rem;
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--panel-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-group label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--panel-text);
    margin-bottom: 0.35rem;
}

.form-check {
    padding: 0.5rem 0;
}

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

.user-panel-top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    margin: 0.5rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
    font-size: 0.85rem;
}

.user-panel-top i {
    font-size: 1.5rem;
    color: var(--panel-primary);
}

@media (max-width: 767px) {
    .content-header h1 {
        font-size: 1.25rem;
    }

    .panel-table-actions {
        flex-direction: column;
        align-items: stretch;
    }
}