.currency-liff-container {
    max-width: 400px;
    margin: 0 auto;
    font-family: 'Prompt', sans-serif; /* แนะนำให้ใช้ Font ฝั่งไทย */
    background: #f4f7f6;
    border-radius: 16px;
    padding: 10px;
}

.exchange-tabs {
    display: flex;
    background: #fff;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

.tab-btn {
    flex: 1;
    border: none;
    padding: 12px;
    background: none;
    font-size: 16px;
    cursor: pointer;
}

.tab-btn.active {
    background: #1DB446; /* สีเขียวหลัก */
    color: white;
    font-weight: bold;
    border-radius: 10px;
}

.exchange-card {
    background: white;
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.input-group {
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 10px 15px;
    margin-bottom: 10px;
}

.input-group label {
    font-size: 12px;
    color: #888;
    display: block;
    margin-bottom: 5px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.input-wrapper select {
    border: none;
    font-size: 16px;
    font-weight: bold;
    background: transparent;
    outline: none;
}

.input-wrapper input, .calculated-amount {
    border: none;
    text-align: right;
    font-size: 20px;
    font-weight: bold;
    width: 60%;
    outline: none;
}

.calculated-amount { color: #1DB446; }

.swap-icon {
    text-align: center;
    color: white;
    background: #1DB446;
    width: 30px;
    height: 30px;
    line-height: 30px;
    border-radius: 50%;
    margin: -15px auto 5px;
    position: relative;
    z-index: 2;
}

.rate-info {
    text-align: center;
    font-size: 14px;
    padding: 10px;
    background: #e9f7ef;
    color: #27ae60;
    border-radius: 8px;
    margin: 15px 0;
}

.quick-amounts {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
}

.quick-amounts button {
    flex: 1;
    border: 1px solid #ddd;
    background: #f9f9f9;
    padding: 8px 0;
    border-radius: 6px;
    cursor: pointer;
}

.quick-amounts button.active {
    border-color: #1DB446;
    color: #1DB446;
    font-weight: bold;
}

.summary-box {
    background: #1DB446;
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
}

.summary-box h2 {
    margin: 5px 0;
    font-size: 32px;
    color: white;
}

.summary-box p { margin: 0; font-size: 14px; }

.btn-book {
    width: 100%;
    padding: 15px;
    border: 1px solid #1DB446;
    background: white;
    color: #1DB446;
    font-weight: bold;
    font-size: 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.3s;
}

.btn-book:hover {
    background: #1DB446;
    color: white;
}