---
import { Icon } from 'astro-icon/components';
---

<section class="max-w-6xl mx-auto px-6 py-16">
  <div class="grid gap-6 md:grid-cols-[1fr_auto_1fr_auto_1fr] items-start">

    <!-- Step 1: Write -->
    <div class="pipeline-step">
      <span class="pipeline-number">01</span>
      <h3 class="pipeline-title">Write</h3>
      <div class="pipeline-preview">
        <pre class="pipeline-code"><span class="text-slate-500">* RC Low-Pass Filter</span>
<span class="text-blue-400">V1</span> in 0 PULSE(0 5 0 1n 1n 0.5m 1m)
<span class="text-blue-400">R1</span> in out 10k
<span class="text-blue-400">C1</span> out 0 100n
<span class="text-emerald-400">.tran</span> 10u 5m</pre>
      </div>
      <p class="pipeline-desc">
        SPICE netlists with syntax highlighting and autocomplete
      </p>
    </div>

    <!-- Arrow 1→2 -->
    <div class="pipeline-arrow">
      <Icon name="lucide:arrow-right" class="w-5 h-5 text-slate-600 hidden md:block" />
      <Icon name="lucide:chevron-down" class="w-5 h-5 text-slate-600 md:hidden" />
    </div>

    <!-- Step 2: Simulate -->
    <div class="pipeline-step">
      <span class="pipeline-number">02</span>
      <h3 class="pipeline-title">Simulate</h3>
      <div class="pipeline-preview">
        <div class="pipeline-terminal">
          <div class="flex items-center gap-2 mb-2">
            <span class="w-1.5 h-1.5 rounded-full bg-emerald-400"></span>
            <span class="text-emerald-400 text-xs font-mono font-semibold">ngspice 43</span>
          </div>
          <div class="text-xs font-mono text-slate-500 space-y-0.5">
            <p>Circuit: RC Low-Pass Filter</p>
            <p>Doing transient analysis...</p>
            <p>501 data points, 23ms</p>
          </div>
          <div class="flex items-center gap-1.5 mt-2">
            <Icon name="lucide:check-circle-2" class="w-3.5 h-3.5 text-emerald-400" />
            <span class="text-emerald-400 text-xs font-mono font-semibold">complete</span>
          </div>
        </div>
      </div>
      <p class="pipeline-desc">
        Run ngspice simulations with one click
      </p>
    </div>

    <!-- Arrow 2→3 -->
    <div class="pipeline-arrow">
      <Icon name="lucide:arrow-right" class="w-5 h-5 text-slate-600 hidden md:block" />
      <Icon name="lucide:chevron-down" class="w-5 h-5 text-slate-600 md:hidden" />
    </div>

    <!-- Step 3: Visualize -->
    <div class="pipeline-step">
      <span class="pipeline-number">03</span>
      <h3 class="pipeline-title">Visualize</h3>
      <div class="pipeline-preview pipeline-waveform">
        <svg viewBox="0 0 300 140" xmlns="http://www.w3.org/2000/svg" class="w-full h-full" preserveAspectRatio="none">
          <!-- Faint grid -->
          <defs>
            <pattern id="ps-grid" width="30" height="17.5" patternUnits="userSpaceOnUse">
              <line x1="30" y1="0" x2="30" y2="17.5" stroke="rgba(45,212,191,0.06)" stroke-width="0.5"/>
              <line x1="0" y1="17.5" x2="30" y2="17.5" stroke="rgba(45,212,191,0.06)" stroke-width="0.5"/>
            </pattern>
          </defs>
          <rect width="300" height="140" fill="#0a0a0a"/>
          <rect width="300" height="140" fill="url(#ps-grid)"/>
          <!-- Input square wave (dim) -->
          <polyline fill="none" stroke="rgba(96,165,250,0.3)" stroke-width="1.2"
            points="0,115 0,25 75,25 75,115 150,115 150,25 225,25 225,115 300,115"/>
          <!-- RC response (bright teal) -->
          <path fill="none" stroke="#2dd4bf" stroke-width="1.8" stroke-linecap="round"
            d="M0,115 C19,50 38,30 75,27 C94,95 112,112 150,114 C169,50 188,30 225,27 C244,95 262,112 300,114"/>
        </svg>
      </div>
      <p class="pipeline-desc">
        Interactive waveforms + oscilloscope mode
      </p>
    </div>

  </div>
</section>

<style>
  .pipeline-step {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .pipeline-number {
    font-family: var(--font-mono, ui-monospace, monospace);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-sb-accent, #2563eb);
    text-transform: uppercase;
  }

  .pipeline-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #f1f5f9;
    letter-spacing: -0.01em;
  }

  .pipeline-preview {
    border-radius: 0.5rem;
    border: 1px solid #1e293b;
    background: #0f172a;
    overflow: hidden;
    min-height: 140px;
  }

  .pipeline-code {
    font-family: var(--font-mono, ui-monospace, monospace);
    font-size: 0.75rem;
    line-height: 1.6;
    padding: 0.875rem 1rem;
    margin: 0;
    white-space: pre;
    color: #e2e8f0;
    overflow: hidden;
  }

  .pipeline-terminal {
    padding: 0.875rem 1rem;
  }

  .pipeline-waveform {
    padding: 0;
    aspect-ratio: 300 / 140;
  }

  .pipeline-desc {
    font-size: 0.875rem;
    color: #94a3b8;
    line-height: 1.5;
  }

  .pipeline-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 5rem;
  }

  @media (max-width: 767px) {
    .pipeline-arrow {
      padding-top: 0;
      padding-bottom: 0;
    }
  }
</style>