Linear Progress Gauge

---
/**
 * LinearProgressGauge — Multi-segmented horizontal memory or budget progress bar with breakdown legend.
 * 
 * @param {string} title - Gauge header label. Default is 'Resource Allocation'.
 * @param {Array<{label: string, value: number, color: string}>} segments - Proportion breakdown chunks.
 * @param {string} total - Formatted total capacity string (e.g. '16 GB', '100%'). Default is '100%'.
 */
interface Props {
  title?: string;
  segments?: Array<{ label: string; value: number; color: string }>;
  total?: string;
}

const {
  title = 'System Resource Allocation',
  segments = [
    { label: 'SSR Execution', value: 45, color: '#d4a017' },
    { label: 'Asset Caching', value: 25, color: '#38bdf8' },
    { label: 'Edge Worker', value: 15, color: '#a855f7' },
    { label: 'Free Headroom', value: 15, color: 'rgba(255,255,255,0.1)' },
  ],
  total = '100%',
} = Astro.props;

const totalSum = segments.reduce((acc, s) => acc + s.value, 0) || 100;
---

<div class="linear-gauge">
  <div class="linear-gauge__header">
    <span class="linear-gauge__title">{title}</span>
    <span class="linear-gauge__total">{total}</span>
  </div>

  <div class="linear-gauge__bar" role="progressbar" aria-valuemax="100" aria-valuemin="0">
    {segments.map((seg) => {
      const pct = (seg.value / totalSum) * 100;
      return (
        <div
          class="linear-gauge__chunk"
          style={`width: ${pct}%; background-color: ${seg.color};`}
          title={`${seg.label}: ${seg.value}%`}
        />
      );
    })}
  </div>

  <div class="linear-gauge__legend">
    {segments.map((seg) => (
      <div class="legend-item">
        <span class="legend-item__dot" style={`background-color: ${seg.color};`}></span>
        <span class="legend-item__name">{seg.label}</span>
        <span class="legend-item__val">{seg.value}%</span>
      </div>
    ))}
  </div>
</div>

<style>
  .linear-gauge {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 440px;
    padding: var(--sp-6, 1.5rem);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--r-xl, 20px);
    font-family: var(--font-sans, system-ui, sans-serif);
  }

  .linear-gauge__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .linear-gauge__title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--c-text-1, #ffffff);
  }

  .linear-gauge__total {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--c-primary-light, #d4a017);
  }

  .linear-gauge__bar {
    display: flex;
    height: 10px;
    border-radius: var(--r-full, 9999px);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }

  .linear-gauge__chunk {
    height: 100%;
    transition: width 0.4s ease;
  }

  .linear-gauge__legend {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 12px;
    margin-top: 4px;
  }

  .legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
  }

  .legend-item__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
  }

  .legend-item__name {
    color: var(--c-text-2, #a3a3a3);
    flex: 1;
  }

  .legend-item__val {
    font-weight: 700;
    color: var(--c-text-1, #ffffff);
  }
</style>