.contact-section {
    padding: 80px 20px;
    text-align: center;
}

.contact-container {
    max-width: 700px;
    margin: 0 auto;
}

.contact-title {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.contact-subtitle {
    font-size: 1rem;
    margin-bottom: 30px;
    color: #e8eef7e3;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    text-align: left;
}

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

.form-group label {
    font-weight: bold;
    margin-bottom: 5px;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #333;
    outline: none;
}

.btn-submit {
    background: #333;
    color: #fff;
    font-size: 1rem;
    font-weight: bold;
    padding: 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-submit:hover {
    background: #555;
}

.success-msg {
    color: rgb(26, 209, 26);
    font-weight: bold;
}

.error-msg {
    color: red;
    font-weight: bold;
}

/* ===== スマホ対応レスポンシブ ===== */
@media (max-width: 768px) {
    .contact-section {
        padding: 60px 15px;
    }

    .contact-title {
        font-size: 1.6rem;
    }

    .contact-subtitle {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }

    .form-group input,
    .form-group textarea {
        padding: 10px;
        font-size: 0.95rem;
    }

    .btn-submit {
        padding: 12px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .contact-section {
        padding: 40px 10px;
    }

    .contact-title {
        font-size: 1.4rem;
    }

    .contact-subtitle {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }

    .form-group input,
    .form-group textarea {
        padding: 8px;
        font-size: 0.9rem;
    }

    .btn-submit {
        padding: 10px;
        font-size: 0.9rem;
    }
}