@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: transparent;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-container {
    width: 100%;
    max-width: 500px;
    padding: 1rem;
    margin: 0 auto;
}

.exchange-card {
    background-color: white;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.tab-container {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid #eee;
}

.tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-weight: bold;
    color: #666;
    font-size: 0.95rem;
}

.tab.active {
    color: #3498db;
    border-bottom: 2px solid #3498db;
    margin-bottom: -2px;
}

.input-group {
    margin-bottom: 1.25rem;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 0.4rem;
    color: #666;
    font-size: 0.9rem;
}

.input-group select,
.input-group input {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.95rem;
}

.exchange-rate {
    text-align: center;
    margin: 0.75rem 0;
    color: #666;
    padding: 0.75rem;
    background-color: #f8f9fa;
    border-radius: 5px;
    font-size: 0.9rem;
}

.fee-info {
    text-align: center;
    color: #666;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
    background-color: #fff3cd;
    border-radius: 5px;
}

.submit-button {
    width: 100%;
    padding: 0.875rem;
    background-color: #0e57d7;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-button:hover {
    background-color: #2980b9;
}

.loading {
    position: absolute;
    right: 10px;
    top: 35px;
    color: #666;
    font-size: 0.8rem;
}

.error-message {
    color: #e74c3c;
    margin-top: 0.4rem;
    font-size: 0.85rem;
}

@media (max-width: 480px) {
    .exchange-card {
        padding: 1.25rem;
    }

    .tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}