// =============================================================
// Chrome — TopNav, Sidebar, PageHeader, PipelineStrip
// =============================================================

function TopNav({ onNew }) {
  return (
    <nav style={{
      height: 56,
      background: 'rgba(255,255,255,0.92)',
      borderBottom: '1px solid var(--border)',
      display: 'flex',
      alignItems: 'center',
      gap: 28,
      padding: '0 24px',
      position: 'sticky',
      top: 0,
      zIndex: 10,
    }}>
      <div style={{ display: 'flex', alignItems: 'center', gap: 10 }}>
        <img src="../../assets/whynot-logo.png" alt="" style={{ width: 22, height: 22 }} />
        <span style={{ font: '500 14px var(--ff-sans)' }}>whynot</span>
        <span style={{ font: '400 12px var(--ff-mono)', color: 'var(--fg-3)', letterSpacing: '0.04em' }}>/ control</span>
      </div>
      <div style={{ marginLeft: 'auto', display: 'flex', alignItems: 'center', gap: 12 }}>
        <div style={{
          font: '400 12px var(--ff-mono)',
          color: 'var(--fg-3)',
          border: '1px solid var(--border)',
          padding: '6px 10px',
          borderRadius: 'var(--r-1)',
          display: 'flex', alignItems: 'center', gap: 10,
          minWidth: 240,
        }}>
          <Icon name="search" size={14} />
          <span>Search ideas, prototypes, signals…</span>
          <span style={{ marginLeft: 'auto', padding: '1px 5px', border: '1px solid var(--border)', borderRadius: 2, fontSize: 10 }}>⌘ K</span>
        </div>
        <Button variant="primary" icon="plus" onClick={onNew}>New idea</Button>
      </div>
    </nav>
  );
}

const NAV_ITEMS = [
  { key: 'inbox',      label: 'Inbox',       icon: 'inbox',         count: 7 },
  { key: 'prototypes', label: 'Prototypes',  icon: 'flask-conical', count: 4 },
  { key: 'signals',    label: 'Signals',     icon: 'activity',      count: 12 },
  { key: 'betas',      label: 'Betas',       icon: 'users',         count: 1 },
  { key: 'decisions',  label: 'Decisions',   icon: 'check-square',  count: 3 },
];

const DOC_ITEMS = [
  { key: 'intent',     label: 'INTENT.md' },
  { key: 'scope',      label: 'SCOPE.md' },
  { key: 'operating',  label: 'OPERATING_MODEL.md' },
  { key: 'pipeline',   label: 'PROTOTYPE_PIPELINE.md' },
  { key: 'agent',      label: 'AGENT_RULES.md' },
];

function Sidebar({ current, onNav }) {
  const itemStyle = (active) => ({
    display: 'flex',
    alignItems: 'center',
    gap: 10,
    padding: '8px 12px',
    borderRadius: 4,
    color: active ? 'var(--fg-1)' : 'var(--fg-2)',
    background: active ? 'var(--paper)' : 'transparent',
    boxShadow: active ? '0 0 0 1px var(--border) inset' : 'none',
    font: '500 13px var(--ff-sans)',
    cursor: 'pointer',
    textDecoration: 'none',
    transition: 'background 120ms ease, color 120ms ease',
  });
  return (
    <aside style={{
      width: 240, flex: 'none',
      background: 'var(--paper-2)',
      borderRight: '1px solid var(--border)',
      padding: '24px 16px',
      display: 'flex', flexDirection: 'column', gap: 24,
      height: 'calc(100vh - 56px)',
      position: 'sticky', top: 56,
      overflowY: 'auto',
    }}>
      <div>
        <Eyebrow style={{ paddingLeft: 12, marginBottom: 8, display: 'block' }}>Work</Eyebrow>
        <div style={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
          {NAV_ITEMS.map(item => (
            <a key={item.key} onClick={() => onNav(item.key)} style={itemStyle(current === item.key)}>
              <Icon name={item.icon} size={16} />
              <span>{item.label}</span>
              <span style={{ marginLeft: 'auto', font: '400 11px var(--ff-mono)', color: 'var(--fg-3)' }}>{item.count}</span>
            </a>
          ))}
        </div>
      </div>
      <div>
        <Eyebrow style={{ paddingLeft: 12, marginBottom: 8, display: 'block' }}>Control docs</Eyebrow>
        <div style={{ display: 'flex', flexDirection: 'column', gap: 2 }}>
          {DOC_ITEMS.map(item => (
            <a key={item.key} onClick={() => onNav('doc:' + item.key)} style={{ ...itemStyle(current === 'doc:' + item.key), font: '400 12px var(--ff-mono)' }}>
              <Icon name="file-text" size={14} />
              <span>{item.label}</span>
            </a>
          ))}
        </div>
      </div>
      <div style={{ marginTop: 'auto', paddingTop: 12, borderTop: '1px solid var(--border)' }}>
        <div style={{ display: 'flex', alignItems: 'center', gap: 8, padding: '6px 12px' }}>
          <span style={{ width: 6, height: 6, borderRadius: 999, background: 'var(--hi-2)' }}></span>
          <span style={{ font: '500 11px var(--ff-mono)', letterSpacing: '0.06em', textTransform: 'uppercase', color: 'var(--fg-2)' }}>A1 · Incubating</span>
        </div>
      </div>
    </aside>
  );
}

function PageHeader({ eyebrow, title, lede, actions }) {
  return (
    <header style={{ marginBottom: 32, display: 'flex', flexDirection: 'column', gap: 8 }}>
      {eyebrow && <Eyebrow>{eyebrow}</Eyebrow>}
      <div style={{ display: 'flex', alignItems: 'flex-end', gap: 24 }}>
        <h1 style={{ font: '500 32px/1.15 var(--ff-sans)', letterSpacing: '-0.015em', margin: 0, flex: 1 }}>{title}</h1>
        {actions && <div style={{ display: 'flex', gap: 8 }}>{actions}</div>}
      </div>
      {lede && <p style={{ font: '400 16px/1.55 var(--ff-sans)', color: 'var(--fg-2)', margin: 0, maxWidth: '60ch' }}>{lede}</p>}
    </header>
  );
}

function PipelineStrip({ activeIdx = 3 }) {
  const stages = [
    { num: 'Stage 0', name: 'Raw idea',       meta: 'inbox/' },
    { num: 'Stage 1', name: 'Triage',         meta: '2026-02-12' },
    { num: 'Stage 2', name: 'Prototype card', meta: 'prototypes/' },
    { num: 'Stage 3', name: 'Experiment',     meta: 'ends 2026-04-01' },
    { num: 'Stage 4', name: 'Signal review',  meta: '— pending' },
  ];
  return (
    <div style={{ display: 'grid', gridTemplateColumns: 'repeat(5, 1fr)', gap: 0, position: 'relative', margin: '0 0 32px' }}>
      {stages.map((s, i) => {
        const state = i < activeIdx ? 'done' : i === activeIdx ? 'active' : 'pending';
        const topColor = state === 'done' ? 'var(--ink)' : state === 'active' ? 'var(--hi-2)' : 'var(--border)';
        return (
          <div key={i} style={{
            padding: '10px 12px 14px',
            borderTop: `2px solid ${topColor}`,
            display: 'flex', flexDirection: 'column', gap: 4,
            position: 'relative',
          }}>
            <span style={{ font: '500 10px/1 var(--ff-mono)', letterSpacing: '0.1em', textTransform: 'uppercase', color: state === 'pending' ? 'var(--fg-3)' : 'var(--fg-1)' }}>{s.num}</span>
            <span style={{ font: '500 14px/1.25 var(--ff-sans)', color: state === 'pending' ? 'var(--fg-3)' : 'var(--fg-1)' }}>{s.name}</span>
            <span style={{ font: '400 11px/1.35 var(--ff-mono)', color: 'var(--fg-3)' }}>{s.meta}</span>
            {i > 0 && (
              <span style={{ position: 'absolute', top: -8, right: -7, font: '400 14px var(--ff-mono)', color: state === 'pending' ? 'var(--ink-5)' : 'var(--ink)' }}>→</span>
            )}
          </div>
        );
      })}
    </div>
  );
}

Object.assign(window, { TopNav, Sidebar, PageHeader, PipelineStrip, NAV_ITEMS, DOC_ITEMS });