/* ----------------------------------------------
                WRAPPER – groups all three boxes
            ------------------------------------------------ */
        .credential-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: stretch;
            gap: 1.75rem;
            max-width: 1100px;
            width: 100%;
        }

        /* ----------------------------------------------
                BASE BOX STYLES – shared by all three
            ------------------------------------------------ */
        .credential-box {
            flex: 1 1 280px;
            min-width: 250px;
            max-width: 340px;

            background: #ffffff;
            border-radius: 1.25rem;
            padding: 1.75rem 1.5rem 2rem;
            box-shadow:
                0 8px 24px rgba(0, 0, 0, 0.06),
                0 2px 6px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.5);
            backdrop-filter: blur(2px);

            transition: transform 0.2s ease, box-shadow 0.25s ease;
        }

        .credential-box:hover {
            transform: translateY(-4px);
            box-shadow:
                0 16px 40px rgba(0, 0, 0, 0.08),
                0 4px 12px rgba(0, 0, 0, 0.04);
        }

        /* ----------------------------------------------
                ROLE HEADER (Admin / Staff / Customer)
            ------------------------------------------------ */
        .box-role {
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 0.3rem 0.9rem;
            border-radius: 100px;
            display: inline-block;
            margin-bottom: 1.25rem;
            background: #eef2f6;
            color: #2c3e50;
        }

        /* ----------------------------------------------
                CREDENTIAL LINES
            ------------------------------------------------ */
        .credential-line {
            display: flex;
            align-items: baseline;
            gap: 0.4rem;
            font-size: 0.95rem;
            color: #1e293b;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }

        .credential-line:last-of-type {
            border-bottom: none;
        }

        .credential-line .label {
            font-weight: 500;
            color: #475569;
            min-width: 78px;
            font-size: 0.85rem;
        }

        .credential-line strong {
            font-weight: 600;
            color: #0f172a;
            word-break: break-all;
        }

        /* ----------------------------------------------
                INDIVIDUAL BOX THEMES (optional accents)
            ------------------------------------------------ */
        /* —— Admin —— */
        .box-admin .box-role {
            background: #dbeafe;
            color: #1e4a8a;
        }
        .box-admin {
            border-left: 4px solid #2563eb;
        }

        /* —— Staff —— */
        .box-staff .box-role {
            background: #d1fae5;
            color: #0b5e42;
        }
        .box-staff {
            border-left: 4px solid #16a34a;
        }

        /* —— Customer —— */
        .box-customer .box-role {
            background: #fef3c7;
            color: #8b5d0b;
        }
        .box-customer {
            border-left: 4px solid #eab308;
        }

        /* ----------------------------------------------
                RESPONSIVE fine-tune
            ------------------------------------------------ */
        @media (max-width: 640px) {
            .credential-box {
                flex: 1 1 100%;
                max-width: 400px;
            }

            .credential-line {
                flex-wrap: wrap;
                gap: 0.1rem 0.5rem;
            }

            .credential-line .label {
                min-width: 70px;
            }
        }