:root {
    --primary-color: #0052FF;
    --background-color: #0A1949;
    --card-background: #FFFFFF;
    --text-color: #1A1A1A;
    --secondary-text: #808080;
    --border-color: #E5E7EB;
    --hover-color: #F3F4F6;
}

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

body {
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
}

h1 {
    color: white;
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    margin-bottom: 2rem;
}

.exchange-card {
    background: var(--card-background);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-size: 1rem;
}

.badge {
    background: #F3F4F6;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--secondary-text);
}