.section-affiliation {
    max-width: 1200px;
    margin: 20px auto 40px;
    padding: 40px 20px;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
}

.section-affiliation h1,
.section-affiliation h2 {
    color: var(--color-text-strong);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 25px;
}

.form-container {
    display: flex;
    justify-content: center;
    width: 100%;
}

.affiliation-form {
    width: 100%;
}

.form-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    color: var(--color-text-strong);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #cccccc;
    border-radius: var(--radius-xs);
    font-size: 14px;
    background-color: #ffffff;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.15);
}

#error-message {
    color: #d32f2f;
    font-weight: 600;
    margin-top: 10px;
    display: none;
}

.section-affiliation .btn-submit {
    width: 100%;
}

@media (max-width: 768px) {
    .section-affiliation {
        padding: 20px 10px;
        margin-top: 60px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .form-group.full-width {
        grid-column: auto;
    }
}

@media (max-width: 320px) {
    .section-affiliation {
        padding: 15px 5px;
    }

    .form-grid {
        gap: 5px;
    }

    .btn-submit {
        padding: 8px 16px;
        font-size: 12px;
    }
}