.signin-required-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
}

.signin-required-modal.hidden {
    display: none;
}

.signin-required-box {
    width: min(90%, 460px);
    background: #fff;
    border-radius: 20px;
    padding: 28px 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.signin-required-box h2 {
    margin: 0 0 14px 0;
    font-size: 24px;
    color: #222;
}

.signin-required-box p {
    margin: 0 0 22px 0;
    font-size: 16px;
    line-height: 1.6;
    color: #444;
}

.signin-required-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.signin-required-btn {
    min-width: 120px;
    padding: 10px 18px;
    border: none;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s ease;
}

.signin-required-btn:hover {
    transform: translateY(-1px);
}

.signin-required-btn.primary {
    background: linear-gradient(90deg, #00c853, #00e676, #7b1fa2);
    color: white;
}

.signin-required-btn.secondary {
    background: #e9ecef;
    color: #333;
}