:root {
    --bg-color: #0b0e11;
    --card-bg: #1e2329;
    --text-primary: #eaecef;
    --text-secondary: #848e9c;
    --up-color: #02c076;
    --down-color: #f6465d;
    --border-color: #35393f;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

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

h1 {
    font-size: 1.2rem;
    margin: 0;
}

#status {
    font-size: 0.8rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.3s;
}

.status-connected {
    background-color: rgba(2, 192, 118, 0.2);
    color: var(--up-color);
}

.status-disconnected {
    background-color: rgba(246, 70, 93, 0.2);
    color: var(--down-color);
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    text-align: center;
}

.symbol {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 24px;
    font-variant-numeric: tabular-nums;
    transition: color 0.2s ease-in-out;
}

.price.up { color: var(--up-color); }
.price.down { color: var(--down-color); }

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.value {
    font-size: 0.9rem;
    font-weight: 500;
}

footer {
    margin-top: 20px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
}