:root {
    --primary-color: #611ca1;
    --secondary-color: #611ca1;
    --text-color: #111111;
    --bg-color: #F2F8FE;
    --card-color: #ffffff;
    --border-color: #dfe6e9;
    --positive-color: #00b894;
    --negative-color: #d63031;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --primary-color: #7d42b5;
    --secondary-color: #7d42b5;
    --card-color: #1e272e;
    --bg-color: #2d3436;
    --text-color: #f5f6fa;
    --text2: #cecece;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.last-updated {
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.converter-card {
    background-color: var(--card-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    gap: 20px;
}

.amount-input, .currency-select {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

input, select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--card-color);
    color: var(--text-color);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 92, 231, 0.2);
}

input[readonly] {
    background-color: var(--bg-color);
}

.swap-btn {
    align-self: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: transform 0.3s;
}

.swap-btn:hover {
    transform: rotate(180deg);
}

.conversion-details {
    margin-top: 30px;
}

.rate-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.rate-change {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.rate-change.positive {
    background-color: rgba(0, 184, 148, 0.1);
    color: var(--positive-color);
}

.rate-change.negative {
    background-color: rgba(214, 48, 49, 0.1);
    color: var(--negative-color);
}

.historical-chart {
    height: 200px;
    margin-top: 20px;
}

.additional-features {
    display: flex;
    gap: 20px;
}

.feature-card {
    background-color: var(--card-color);
    border-radius: 16px;
    padding: 25px;
    box-shadow: var(--shadow);
    width: 50%;
}

.feature-card h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 600;
}

.popular-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.popular-item {
    padding: 12px;
    border-radius: 8px;
    background-color: var(--bg-color);
    cursor: pointer;
    transition: all 0.2s;
}

.popular-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.popular-item .pair {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.popular-item .rate {
    font-weight: 600;
}

.crypto-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

tr:hover {
    background-color: var(--bg-color);
}

.positive {
    color: var(--positive-color);
}

.negative {
    color: var(--negative-color);
}

@media (max-width: 768px) {
    .card-head {
        display: block;
    }
    
    .last-updated {
        font-size: 0.8rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .additional-features {
        display: block;
    }

    .feature-card {
        width: 100%;
    }
    
    .popular-currencies {
        margin-bottom: 1rem;
    }

    .popular-list {
        grid-template-columns: 1fr;
    }
}