.invite-wrap {
    width: min(92vw, 680px);
    box-sizing: border-box;
    margin: 4vh auto;
    background: #fff;
    border: 1px solid var(--color-border, #dbe3f0);
    border-radius: var(--radius-lg, 12px);
    padding: 32px 28px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    text-align: center;
}

.invite-wrap h1 {
    margin: 0 0 10px;
    font-size: 1.85rem;
    color: var(--color-text-dark, #1e293b);
}

.invite-wrap p.muted {
    margin: 0 0 24px;
    color: var(--color-text-light, #64748b);
    line-height: 1.5;
}

.invite-field {
    margin: 0 0 16px;
    text-align: left;
}

.invite-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text-dark, #1e293b);
}

.invite-field input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    border: 1px solid var(--color-input-border, #c8d3e6);
    border-radius: var(--radius-md, 8px);
    font-size: 1rem;
}

.invite-btn {
    margin: 16px auto 0;
    display: block;
    width: 100%;
    background: var(--color-primary-dark, #334155);
    color: #fff;
    border: 0;
    border-radius: var(--radius-md, 8px);
    padding: 14px 20px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.invite-btn:hover {
    background: #1e293b;
}

.invite-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.invite-card {
    margin-top: 20px;
    border-radius: 8px;
    padding: 14px 18px;
    border: 1px solid transparent;
    text-align: left;
    line-height: 1.5;
}

.invite-card.error {
    background: #fff1f2;
    border-color: #fecdd3;
    color: #9f1239;
}

.invite-card.ok {
    background: #ecfdf3;
    border-color: #bbf7d0;
    color: #166534;
}

.invite-card ul {
    margin: 8px 0 0 18px;
    padding: 0;
}

@media (max-width: 480px) {
    .invite-wrap {
        width: 94vw;
        padding: 24px 16px;
        margin: 2vh auto;
    }
    .invite-wrap h1 {
        font-size: 1.5rem;
    }
}