.topnav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: #0B2143;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: stretch;
            z-index: 200;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .topnav::-webkit-scrollbar { display: none; }
        .topnav .nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 11px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
            border-bottom: 2px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .topnav .nav-item:hover {
            color: rgba(255, 255, 255, 0.9);
            background: rgba(255, 255, 255, 0.05);
        }
        .topnav .nav-item svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            opacity: 0.7;
        }

        .login-wrap {
            position: fixed;
            top: calc(50% + 22px);
            left: 50%;
            transform: translate(-50%, -50%);
            width: 360px;
            max-width: 90vw;
        }

        .login-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 40px;
            animation: slideUp 0.3s ease;
            box-shadow: 0 8px 40px rgba(19, 43, 76, 0.1);
        }

        .login-logo {
            display: block;
            margin: 0 auto 32px;
            width: 160px;
        }

        .login-card h2 {
            color: var(--color-text);
            font-size: 22px;
            font-family: var(--font-heading);
            font-weight: 500;
            text-align: center;
            margin-bottom: 28px;
        }

        .field {
            margin-bottom: 16px;
        }

        .login-btn {
            width: 100%;
            padding: 12px;
            margin-top: 8px;
            font-size: 13px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            font-weight: 600;
        }

        .login-error {
            color: #ff6b6b;
            font-size: 13px;
            text-align: center;
            margin-top: 14px;
            display: none;
        }

        .login-spinner {
            display: none;
            text-align: center;
            margin-top: 14px;
            color: var(--color-text-muted);
            font-size: 13px;
        }