body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f111a, #1a1f2b);
    margin: 0;
    padding: 0;
    color: #f0f0f0;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #121524;
    padding: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

header img {
    width: 50px;
    margin-right: 12px;
}

header h1 {
    color: #F7931A;
    font-weight: bold;
    font-size: 1.8em;
}

main {
    max-width: 900px;
    margin: auto;
    padding: 20px;
}

.price-box {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.price {
    text-align: center;
    background: #1b1f33;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    margin: 10px;
    flex: 1 1 40%;
}

.price span {
    display: block;
    font-size: 1.5em;
    color: #F7931A;
    font-weight: bold;
}

canvas {
    background: #1b1f33;
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    margin-bottom: 20px;
}

.converter {
    background: #1b1f33;
    padding: 15px;
    border-radius: 12px;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

input, select {
    padding: 10px;
    margin: 5px;
    border: none;
    border-radius: 8px;
    outline: none;
    background: #2a2e44;
    color: #f0f0f0;
}

button {
    padding: 10px 20px;
    border: none;
    background: linear-gradient(135deg, #F7931A, #ffb347);
    color: #121524;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

button:hover {
    background: linear-gradient(135deg, #e07a00, #ff9a2e);
}

h3 {
    color: #F7931A;
    text-align: center;
}

#conversionResult {
    color: #FFD700;
    font-weight: bold;
    text-align: center;
    margin-top: 10px;
}