:root {
    --bg: #0d1117;
    --panel: #161b22;
    --border: #30363d;
    --text: #c9d1d9;
    --muted: #8b949e;
    --accent: #58a6ff;
}

* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--panel);
}

.logo { font-weight: 600; font-size: 1.1rem; }
.logo span { color: var(--accent); }
.logo small { font-size: 0.7rem; opacity: 0.5; margin-left: 4px; }
.tagline { font-size: 0.75rem; color: var(--muted); }

.test-label {
    font-size: 0.7rem;
    padding: 2px 10px;
    border-radius: 12px;
    background: #23863622;
    color: #3fb950;
    border: 1px solid #23863666;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1rem;
    flex-grow: 1;
    overflow: hidden;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.02);
}

.panel-header h3 { margin: 0; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }

.generator-toolbar {
    padding: 0.75rem;
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border);
    background: rgba(0,0,0,0.1);
}

.gen-btn {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 600;
}

.gen-btn:hover { border-color: var(--accent); color: var(--accent); }

textarea {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: #79c0ff;
    font-family: ui-monospace, SFMono-Regular, monospace;
    padding: 1rem;
    resize: none;
    outline: none;
    font-size: 0.8rem;
    line-height: 1.4;
}

.result-card { padding: 2rem; display: flex; justify-content: center; }
.score-display { display: flex; align-items: center; gap: 2.5rem; }

.score-circle { width: 120px; height: 120px; position: relative; text-align: center; }
.circular-chart { display: block; }
.circle-bg { fill: none; stroke: var(--border); stroke-width: 2.5; }
.circle { fill: none; stroke-width: 2.5; stroke-linecap: round; stroke: var(--accent); transition: stroke-dasharray 0.4s ease; }
.percentage {
    position: absolute;
    top: 42%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.6rem; font-weight: 700;
}
.meter-label { position: absolute; bottom: 18%; width: 100%; font-size: 0.6rem; text-transform: uppercase; color: var(--muted); letter-spacing: 0.1em; }

.classification-box { text-align: left; }
.classification-box label { font-size: 0.65rem; text-transform: uppercase; color: var(--muted); letter-spacing: 0.1em; }
#shape-label { font-size: 2rem; font-weight: 800; color: var(--accent); }

.breakdown { padding: 1.25rem; border-top: 1px solid var(--border); }
.breakdown h4 { margin: 0 0 1rem 0; font-size: 0.65rem; color: var(--muted); text-transform: uppercase; }

.metrics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.metric-item { display: flex; justify-content: space-between; padding: 0.5rem; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; font-size: 0.8rem; }
.metric-item span:first-child { color: var(--muted); }
.metric-item span:last-child { font-weight: bold; color: var(--accent); }

.debug-log { padding: 1rem; border-top: 1px solid var(--border); background: rgba(0,0,0,0.2); flex-grow: 1; overflow-y: auto; }
pre { font-size: 0.75rem; color: #8b949e; margin: 0; white-space: pre-wrap; font-family: monospace; }

button#format-json {
    background: var(--border);
    border: none;
    color: var(--text);
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.6rem;
}

.status { font-size: 0.65rem; padding: 2px 8px; border-radius: 10px; background: rgba(88, 166, 255, 0.1); color: var(--accent); border: 1px solid rgba(88, 166, 255, 0.2); }