:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --accent: #38bdf8;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

.container {
    max-width: 800px;
    width: 100%;
    background: var(--card-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

.input-group { display: flex; gap: 10px; margin-bottom: 30px; justify-content: center; }

input {
    background: #0f172a;
    border: 1px solid #334155;
    color: var(--accent);
    padding: 10px;
    border-radius: 8px;
    font-family: monospace;
}

button {
    background: var(--accent);
    color: #0f172a;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

.reasoning-container {
    margin-top: 20px;
    padding: 15px;
    background: rgba(0,0,0,0.2);
    border-left: 4px solid var(--accent);
    border-radius: 4px;
    font-size: 0.9rem;
    line-height: 1.4;
}

.report-header { text-align: center; border-bottom: 1px solid #334155; margin-bottom: 20px; padding-bottom: 10px; }
.chart-container { height: 300px; position: relative; }
.legend-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin-top: 20px; }
.stat-card { background: rgba(255,255,255,0.05); padding: 10px; border-radius: 8px; text-align: center; }
.stat-value { display: block; color: var(--accent); font-weight: bold; }
.stat-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; }