:root {
    --bg-dark: #0a0c10;
    --card-bg: rgba(25, 30, 40, 0.7);
    --accent: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.3);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    background: var(--bg-dark);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.cockpit {
    width: 100%;
    max-width: 900px;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

header {
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 24px;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 12px;
}

h1 .badge {
    background: var(--accent);
    color: white;
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 4px;
    text-transform: uppercase;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 4px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.output-section {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input,
select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: all 0.2s ease;
}

input:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.tier-selector {
    display: flex;
    gap: 8px;
}

.tier-btn {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

.tier-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.quote-card {
    margin-bottom: 24px;
}

.quote-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.quote-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.buy-value {
    color: var(--success);
}

.sell-value {
    color: var(--warning);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
    border-top: 1px solid var(--border);
    padding-top: 24px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.stat-value {
    font-size: 0.875rem;
    font-weight: 600;
}

.pnl-value {
    color: var(--success);
    font-size: 1.125rem;
}

footer {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }

    .cockpit {
        padding: 24px;
    }
}