:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --accent: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
    --border: #374151;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success);
    font-size: 0.9rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.last-update {
    color: var(--text-secondary);
    font-family: monospace;
    font-size: 0.85rem;
}

/* Navigation */
.nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    gap: 0;
    overflow-x: auto;
}

.nav-link {
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Main Content */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Price Ticker */
.ticker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    transition: transform 0.2s;
}

.price-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.price-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.coin-symbol {
    font-weight: 700;
    font-size: 1.1rem;
}

.coin-name {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.price-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: monospace;
    margin: 0.5rem 0;
}

.price-change {
    font-size: 0.9rem;
    font-weight: 600;
}

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

/* Signals */
.signals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.signal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
}

.signal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.signal-type {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.signal-buy {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.signal-sell {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.signal-neutral {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

/* Whale Watch */
.whale-feed {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.whale-transaction {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.whale-transaction:last-child {
    border-bottom: none;
}

.whale-amount {
    font-weight: 700;
    font-family: monospace;
}

.whale-time {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    height: 500px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .main {
        padding: 1rem;
    }

    .ticker-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Loading States */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.spinner {
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}