/* ========================================================
   Tweaks panel — accent, hero bg, headline
   ======================================================== */
const { useState: useStateTw, useEffect: useEffectTw } = React;

const ACCENTS = {
  cyan:  { hex: "#00D9FF", ink: "#001418", label: "Electric Cyan",  glow: "rgba(0,217,255,0.35)",  soft: "rgba(0,217,255,0.12)",  line: "rgba(0,217,255,0.4)"  },
  green: { hex: "#00FF94", ink: "#001810", label: "Acid Green",     glow: "rgba(0,255,148,0.35)",  soft: "rgba(0,255,148,0.12)",  line: "rgba(0,255,148,0.4)"  },
  coral: { hex: "#FF6B4A", ink: "#1a0600",  label: "Warm Coral",     glow: "rgba(255,107,74,0.35)", soft: "rgba(255,107,74,0.12)", line: "rgba(255,107,74,0.4)" },
};

function applyAccent(k) {
  const a = ACCENTS[k] || ACCENTS.cyan;
  const r = document.documentElement;
  r.style.setProperty("--accent", a.hex);
  r.style.setProperty("--accent-ink", a.ink);
  r.style.setProperty("--accent-glow", a.glow);
  r.style.setProperty("--accent-soft", a.soft);
  r.style.setProperty("--accent-line", a.line);
}

function TweaksPanel({ open, tweaks, setTweaks, onClose }) {
  const Opt = ({ on, onClick, children }) => (
    <button className={"tw-chip " + (on ? "on" : "")} onClick={onClick}>{children}</button>
  );
  return (
    <div className={"tw-panel " + (open ? "open" : "")}>
      <div className="tw-head">
        <span className="mono">TWEAKS</span>
        <button className="tw-x" onClick={onClose} aria-label="Close"><I.Close size={14}/></button>
      </div>

      <div className="tw-row">
        <div className="mono tw-label">Accent</div>
        <div className="tw-chips">
          {Object.entries(ACCENTS).map(([k, v]) => (
            <button
              key={k}
              className={"tw-swatch " + (tweaks.accent === k ? "on" : "")}
              onClick={() => setTweaks({ accent: k })}
              aria-label={v.label}
            >
              <span style={{ background: v.hex }}/>
              <span className="tw-swatch-l">{v.label}</span>
            </button>
          ))}
        </div>
      </div>

      <div className="tw-row">
        <div className="mono tw-label">Hero background</div>
        <div className="tw-chips">
          <Opt on={tweaks.heroBg==="grid"}  onClick={() => setTweaks({ heroBg: "grid" })}>Grid + dots</Opt>
          <Opt on={tweaks.heroBg==="mesh"}  onClick={() => setTweaks({ heroBg: "mesh" })}>Gradient mesh</Opt>
        </div>
      </div>

      <div className="tw-row">
        <div className="mono tw-label">Headline</div>
        <div className="tw-chips tw-chips--col">
          <Opt on={tweaks.headline==="a"} onClick={() => setTweaks({ headline: "a" })}>We ship production AI.</Opt>
          <Opt on={tweaks.headline==="b"} onClick={() => setTweaks({ headline: "b" })}>Agents that do the work.</Opt>
          <Opt on={tweaks.headline==="c"} onClick={() => setTweaks({ headline: "c" })}>Senior engineers. AI that ships.</Opt>
        </div>
      </div>

      <div className="tw-row">
        <div className="mono tw-label">Custom cursor</div>
        <div className="tw-chips">
          <Opt on={tweaks.cursor}  onClick={() => setTweaks({ cursor: true })}>On</Opt>
          <Opt on={!tweaks.cursor} onClick={() => setTweaks({ cursor: false })}>Off</Opt>
        </div>
      </div>
      <style>{`
        .tw-panel {
          position: fixed; right: 16px; bottom: 16px; z-index: 200;
          width: 300px;
          background: color-mix(in oklab, var(--surface) 92%, transparent);
          backdrop-filter: blur(14px);
          border: 1px solid var(--border-2);
          border-radius: 14px;
          padding: 16px;
          opacity: 0; transform: translateY(8px);
          transition: opacity .25s, transform .25s;
          pointer-events: none;
          box-shadow: 0 30px 80px -30px rgba(0,0,0,0.8);
        }
        .tw-panel.open { opacity: 1; transform: none; pointer-events: auto; }
        .tw-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
        .tw-head .mono { font-size: 10px; color: var(--text-3); letter-spacing: 0.18em; }
        .tw-x { color: var(--text-3); padding: 4px; border-radius: 4px; }
        .tw-x:hover { background: var(--border); color: var(--text); }
        .tw-row { padding: 10px 0; border-top: 1px solid var(--border); }
        .tw-row:first-of-type { border-top: 0; }
        .tw-label { font-size: 10px; color: var(--text-4); margin-bottom: 10px; }
        .tw-chips { display: flex; flex-wrap: wrap; gap: 6px; }
        .tw-chips--col { flex-direction: column; align-items: stretch; }
        .tw-chip {
          font-size: 11.5px; padding: 6px 10px;
          border: 1px solid var(--border-2);
          border-radius: 6px;
          color: var(--text-3);
          background: transparent;
          text-align: left;
          transition: all .2s;
        }
        .tw-chip:hover { color: var(--text); }
        .tw-chip.on { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
        .tw-swatch {
          display: flex; align-items: center; gap: 8px;
          padding: 6px 10px 6px 6px;
          border: 1px solid var(--border-2);
          border-radius: 999px;
          color: var(--text-3);
          transition: all .2s;
        }
        .tw-swatch span:first-child { width: 14px; height: 14px; border-radius: 50%; display: inline-block; }
        .tw-swatch-l { font-size: 11px; }
        .tw-swatch.on { color: var(--accent); border-color: var(--accent-line); }
      `}</style>
    </div>
  );
}

Object.assign(window, { ACCENTS, applyAccent, TweaksPanel });