body {
            min-height: 100vh;
            margin: 0;
            font-family: "Outfit", Arial, sans-serif;
            background:
                radial-gradient(circle at top left, rgba(255, 90, 31, 0.16), transparent 28%),
                radial-gradient(circle at bottom right, rgba(15, 96, 168, 0.18), transparent 26%),
                linear-gradient(135deg, #041526, #071f36 48%, #020b14);
            color: #dbe5f4;
        }
        .login-shell {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .login-shell.is-transitioning .login-card {
            opacity: 0;
            transform: translateY(14px) scale(0.985);
        }
        .login-card {
            width: 100%;
            max-width: 420px;
            border-radius: 0;
            border: 1px solid rgba(148, 163, 184, 0.18);
            box-shadow: 0 26px 70px rgba(3, 7, 18, 0.38);
            backdrop-filter: blur(18px);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 247, 251, 0.96));
            color: #0f172a;
            padding: 0 26px 22px;
            overflow: hidden;
            opacity: 1;
            transform: translateY(0) scale(1);
            transition: opacity 0.5s ease, transform 0.5s ease;
            animation: cardEnter 0.7s ease both;
        }
        .login-card__header {
            margin: 0 -26px 22px;
            padding: 22px 26px 18px;
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(246, 249, 252, 0.98)),
                radial-gradient(circle at top, rgba(255, 90, 31, 0.1), transparent 56%);
            border-bottom: 1px solid rgba(148, 163, 184, 0.16);
        }
        .brand {
            display: flex;
            justify-content: center;
            margin: 0;
        }
        .brand img {
            width: 230px;
            height: auto;
            filter: none;
        }
        .title {
            font-size: 25px;
            font-weight: 700;
            margin: 0 0 18px;
            letter-spacing: -0.03em;
            text-align: center;
        }
        .btn-brand {
            width: 100%;
            background: linear-gradient(135deg, #ff5a1f, #f36c21);
            border: 0;
            padding: 14px 16px;
            border-radius: 0;
            color: #fff;
            font-weight: 600;
            box-shadow: 0 14px 30px rgba(255, 90, 31, 0.22);
        }
        .btn-brand:hover {
            background: linear-gradient(135deg, #e94f18, #ff5a1f);
            color: #fff;
        }
        .btn-brand:disabled {
            opacity: 0.88;
            cursor: wait;
        }
        .btn-label,
        .btn-loader {
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn-loader {
            display: none;
            gap: 10px;
        }
        .btn-brand.is-loading .btn-label {
            display: none;
        }
        .btn-brand.is-loading .btn-loader {
            display: inline-flex;
        }
        .spinner {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.28);
            border-top-color: #fff;
            animation: spin 0.8s linear infinite;
        }
        .form-label {
            font-weight: 600;
            color: #1e293b;
        }
        .form-control {
            min-height: 46px;
            border-radius: 0;
            border-color: #cbd5e1;
            padding: 12px 14px;
        }
        .form-control:focus {
            border-color: #ff5a1f;
            box-shadow: 0 0 0 0.2rem rgba(255, 90, 31, 0.14);
        }
        .admin-footer {
            margin-top: 18px;
            color: #64748b;
            font-size: 13px;
            line-height: 1.7;
            text-align: center;
        }
        .admin-footer a {
            color: #2563eb;
            text-decoration: none;
        }
        .admin-footer a:hover {
            text-decoration: underline;
        }
        .welcome-card {
            text-align: center;
            animation: contentEnter 0.7s ease 0.08s both;
        }
        .welcome-copy {
            color: #475569;
            font-size: 16px;
            line-height: 1.7;
            margin: 0 0 22px;
        }
        .welcome-loader {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 62px;
            height: 62px;
            border-radius: 999px;
            background: rgba(37, 99, 235, 0.08);
            color: #1d4ed8;
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.1);
        }
        .welcome-loader .spinner {
            width: 20px;
            height: 20px;
            border-color: rgba(37, 99, 235, 0.18);
            border-top-color: #1d4ed8;
        }
        @keyframes cardEnter {
            from {
                opacity: 0;
                transform: translateY(18px) scale(0.99);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        @keyframes contentEnter {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        @media (max-width: 640px) {
            .login-card {
                padding: 0 22px 22px;
            }
            .login-card__header {
                margin: 0 -22px 24px;
                padding: 22px 22px 18px;
            }
        }