.line-login-btn {
    background: #06C755;
    color: white;
    border: none;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(6, 199, 85, 0.3);
}

.line-login-btn:hover {
    background: #05b34c;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(6, 199, 85, 0.4);
}

.line-login-btn i {
    font-size: 28px;
}

.staff-login-btn {
    background: white;
    color: #1b1b18;
    border: 2px solid #e5e7eb;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.staff-login-btn:hover {
    border-color: #9ca3af;
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.system-card {
    display: block;
    padding: 20px 12px;
    border-radius: 10px;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.12);
    margin-bottom: 10px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
}

.system-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.welcome-card {
    background: white;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    max-width: 420px;
    width: 100%;
    text-align: center;
}

.divider {
    display: flex;
    align-items: center;
    margin: 16px 0;
    color: #9ca3af;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #e5e7eb;
}

.divider span {
    padding: 0 12px;
    font-size: 13px;
}

@media (max-width: 640px) {
    .welcome-card {
        padding: 20px 16px;
        max-width: 95%;
    }

    .line-login-btn {
        padding: 14px 24px;
        font-size: 16px;
    }

    .staff-login-btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .system-card {
        padding: 16px 10px;
    }

    .system-card i {
        font-size: 32px !important;
    }

    .system-card h5 {
        font-size: 14px !important;
    }

    .system-card p {
        font-size: 11px !important;
    }
}