:root {
            --page-bg: #f4f7fb;
            --card-bg: #ffffff;
            --brand: #0f4c81;
            --brand-dark: #0a365c;
            --accent: #e7f1ff;
            --text: #1d2a3a;
            --muted: #6b7785;
            --border: #d9e2ec;
        }

        body {
            font-family: 'Manrope', sans-serif;
            background:
                radial-gradient(circle at top right, rgba(15, 76, 129, 0.10), transparent 30%),
                linear-gradient(180deg, #f9fbfd 0%, var(--page-bg) 100%);
            color: var(--text);
            min-height: 100vh;
        }

        .admin-shell {
            min-height: 100vh;
            position: relative;
        }

        .admin-sidebar {
            width: 280px;
            background: linear-gradient(180deg, #0b2740 0%, #103d62 55%, #0f4c81 100%);
            color: #ffffff;
            box-shadow: 18px 0 36px rgba(15, 23, 42, 0.12);
            transition: transform 0.25s ease, width 0.25s ease, padding 0.25s ease;
            z-index: 1040;
            display: flex;
            flex-direction: column;
        }

        .admin-main {
            min-width: 0;
            flex: 1;
            transition: margin-left 0.25s ease;
        }

        .admin-sidebar .nav-link {
            color: rgba(255, 255, 255, 0.82);
            border-radius: 14px;
            padding: 0.85rem 1rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.85rem;
            overflow: hidden;
        }

        .admin-sidebar .nav-link:hover,
        .admin-sidebar .nav-link.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
        }

        .nav-icon {
            width: 1.4rem;
            min-width: 1.4rem;
            text-align: center;
            font-size: 1rem;
        }

        .nav-label {
            white-space: nowrap;
        }

        .topbar-panel {
            border: 1px solid rgba(217, 226, 236, 0.9);
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
        }

        .card-panel {
            border: 1px solid rgba(217, 226, 236, 0.9);
            border-radius: 18px;
            background: var(--card-bg);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
        }

        .toolbar-card {
            border: 1px solid rgba(217, 226, 236, 0.9);
            border-radius: 18px;
            background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
            box-shadow: 0 16px 36px rgba(15, 23, 42, 0.05);
        }

        .sidebar-toggle-btn {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            flex-shrink: 0;
        }

        .admin-shell.sidebar-collapsed .admin-sidebar {
            width: 92px;
            padding-left: 1rem !important;
            padding-right: 1rem !important;
        }

        .admin-shell.sidebar-collapsed .sidebar-brand {
            justify-content: center;
        }

        .admin-shell.sidebar-collapsed .sidebar-title-block,
        .admin-shell.sidebar-collapsed .nav-label {
            opacity: 0;
            visibility: hidden;
            width: 0;
            margin: 0;
            pointer-events: none;
        }

        .admin-shell.sidebar-collapsed .admin-sidebar .nav-link {
            justify-content: center;
            padding-left: 0.75rem;
            padding-right: 0.75rem;
            gap: 0;
        }

        .admin-shell.sidebar-collapsed .sidebar-header {
            justify-content: center !important;
        }

        .admin-shell.sidebar-collapsed .admin-sidebar .sidebar-toggle-btn {
            margin: 0 auto;
        }

        .sidebar-backdrop {
            display: none;
        }

        .workspace-title {
            font-size: 0.98rem;
            line-height: 1.2;
        }

        .workspace-subtitle {
            font-size: 0.78rem;
            line-height: 1.2;
        }

        .sidebar-brand {
            min-width: 0;
        }

        .sidebar-title-block,
        .nav-label {
            transition: opacity 0.2s ease, visibility 0.2s ease;
        }

        .page-heading {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.03em;
        }

        .subtle-text {
            color: var(--muted);
        }

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

        .btn-brand:hover,
        .btn-brand:focus {
            background-color: var(--brand-dark);
            border-color: var(--brand-dark);
        }

        .table {
            table-layout: fixed;
            width: 100% !important;
        }

        .table th,
        .table td {
            white-space: normal;
            word-break: break-word;
            vertical-align: middle;
        }

        .dataTables_wrapper .row {
            --bs-gutter-y: 1rem;
        }

        .dataTables_filter input,
        .dataTables_length select {
            border-radius: 10px;
        }

        .login-shell {
            min-height: 100vh;
            padding: 1.5rem;
        }

        .login-card {
            border: 1px solid rgba(217, 226, 236, 0.85);
            border-radius: 32px;
            overflow: hidden;
            box-shadow: 0 30px 70px rgba(15, 23, 42, 0.16);
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
        }

        .login-panel {
            background:
                radial-gradient(circle at top left, rgba(255, 255, 255, 0.12), transparent 28%),
                radial-gradient(circle at bottom right, rgba(231, 241, 255, 0.18), transparent 24%),
                linear-gradient(165deg, #071c2f 0%, #0a365c 42%, #0f4c81 78%, #2f80c1 100%);
            color: #ffffff;
            position: relative;
        }

        .login-panel::after {
            content: "";
            position: absolute;
            inset: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            pointer-events: none;
        }

        .login-brand {
            position: relative;
            z-index: 1;
        }

        .brand-mark {
            width: 72px;
            height: 72px;
            border-radius: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.16);
            box-shadow: 0 12px 24px rgba(7, 28, 47, 0.22);
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.08em;
        }

        .brand-name {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.03em;
        }

        .brand-copy {
            max-width: 30rem;
            color: rgba(255, 255, 255, 0.74);
            font-size: 1rem;
        }

        .login-feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
            z-index: 1;
        }

        .login-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.85rem 0;
            color: rgba(255, 255, 255, 0.88);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .login-feature-list li:first-child {
            border-top: 0;
            padding-top: 0;
        }

        .login-feature-icon {
            width: 2rem;
            height: 2rem;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.95rem;
        }

        .login-form-panel {
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 251, 255, 0.96) 100%);
        }

        .login-form-wrap {
            max-width: 460px;
            margin: 0 auto;
        }

        .login-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.45rem 0.9rem;
            border-radius: 999px;
            background: rgba(15, 76, 129, 0.08);
            color: var(--brand-dark);
            font-weight: 700;
            font-size: 0.85rem;
        }

        .login-heading {
            font-size: clamp(2rem, 4vw, 2.7rem);
            line-height: 1.05;
            letter-spacing: -0.04em;
        }

        .login-form-panel .form-label {
            color: #334155;
        }

        .login-form-panel .form-control {
            min-height: 3.5rem;
            border: 1px solid #d5dee9;
            background: #f9fbfd;
            box-shadow: none;
        }

        .login-form-panel .form-control:focus {
            border-color: rgba(15, 76, 129, 0.5);
            box-shadow: 0 0 0 0.25rem rgba(15, 76, 129, 0.12);
            background: #ffffff;
        }

        .login-submit {
            min-height: 3.5rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            box-shadow: 0 14px 28px rgba(15, 76, 129, 0.18);
        }

        .login-demo-box {
            position: relative;
            z-index: 1;
            border-radius: 22px;
            padding: 1.2rem 1.25rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.14);
        }

        .badge-soft {
            background: var(--accent);
            color: var(--brand-dark);
            font-weight: 700;
        }

        .topbar-actions {
            flex-wrap: wrap;
        }

        footer {
            color: var(--muted);
        }

        @media (max-width: 991.98px) {
            .page-heading {
                font-size: 1.55rem;
            }

            .admin-sidebar {
                position: fixed;
                inset: 0 auto 0 0;
                width: min(280px, calc(100vw - 3rem));
                transform: translateX(-100%);
                height: 100vh;
            }

            .admin-shell.sidebar-open .admin-sidebar {
                transform: translateX(0);
            }

            .admin-shell.sidebar-collapsed .admin-sidebar {
                width: min(280px, calc(100vw - 3rem));
                padding-left: 1.5rem !important;
                padding-right: 1.5rem !important;
                overflow: visible;
            }

            .admin-shell.sidebar-collapsed .sidebar-title-block,
            .admin-shell.sidebar-collapsed .nav-label {
                opacity: 1;
                visibility: visible;
                width: auto;
                margin: initial;
                pointer-events: auto;
            }

            .admin-shell.sidebar-collapsed .admin-sidebar .nav-link {
                justify-content: flex-start;
                padding-left: 1rem;
                padding-right: 1rem;
                gap: 0.85rem;
            }

            .sidebar-backdrop {
                position: fixed;
                inset: 0;
                background: rgba(15, 23, 42, 0.35);
                opacity: 0;
                pointer-events: none;
                transition: opacity 0.25s ease;
                z-index: 1030;
            }

            .admin-shell.sidebar-open .sidebar-backdrop {
                display: block;
                opacity: 1;
                pointer-events: auto;
            }

            .login-shell {
                padding: 1rem;
            }

            .login-card {
                border-radius: 24px;
            }

            .login-panel::after {
                inset: 1rem;
                border-radius: 20px;
            }
        }