* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #e0e0e0;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 40px 0;
}

header h1 {
    font-size: 2.5rem;
    color: #f7931a;
    margin-bottom: 8px;
}

.subtitle {
    color: #888;
    font-size: 1rem;
}

.main-card {
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.price-section {
    text-align: center;
    margin-bottom: 30px;
}

.price-label {
    font-size: 1rem;
    color: #888;
    margin-bottom: 10px;
}

.price-display {
    font-size: 3.5rem;
    font-weight: 700;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
}

.price-change {
    font-size: 1.2rem;
    margin-top: 10px;
    font-weight: 600;
}

.price-change.up { color: #00d084; }
.price-change.down { color: #ff4757; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 15px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
}

.stat-label {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
}

.card {
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.card h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #f7931a;
}

#chart {
    width: 100%;
    height: 300px;
}

.alert-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.alert-form input {
    flex: 1;
    min-width: 200px;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 1rem;
}

.alert-form input::placeholder {
    color: #666;
}

.alert-form select {
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 1rem;
}

.alert-form button {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    background: #f7931a;
    color: #1a1a2e;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.alert-form button:hover {
    opacity: 0.9;
}

.alerts-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.alert-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
    border-left: 3px solid #f7931a;
}

.footer {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 0.85rem;
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .price-display {
        font-size: 2.5rem;
    }
}