/* ---------- BASE ---------- */
* { box-sizing: border-box; margin: 0; }

:root {
  --ink: #1e2430;
  --muted: #667085;
  --line: #e4e7ec;
  --accent: #4f46e5;
  --ok: #067647;
  --ok-bg: #dcfae6;
  --no: #b42318;
  --no-bg: #fee4e2;
  --mono: ui-monospace, "SF Mono", Consolas, monospace;
}

body {
  min-height: 100vh;
  background: #f6f7fb;
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.top { max-width: 1100px; margin: 0 auto; padding: 28px 16px 8px; }
.top h1 { font-size: clamp(24px, 4vw, 34px); letter-spacing: -.5px; }
.top p { color: var(--muted); margin-top: 6px; }

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
.panel { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
/* ---------- END BASE ---------- */

/* ---------- SETUP ---------- */
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 600; }
.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: 14px var(--mono);
  color: var(--ink);
}
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79, 70, 229, .15); }
.initial[hidden] { display: none; }

.methods { display: flex; flex-wrap: wrap; gap: 6px; }
.m {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font: 13px var(--mono);
  cursor: pointer;
}
.m:hover { border-color: #a5b4fc; }
.m[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

.what { padding: 12px; border-radius: 10px; background: #eef2ff; color: #3730a3; font-size: 13.5px; line-height: 1.5; margin-bottom: 16px; }
.buttons { display: flex; gap: 8px; }
.run, .instant {
  padding: 11px 16px;
  border-radius: 10px;
  font: 700 14px system-ui, sans-serif;
  cursor: pointer;
}
.run { flex: 1; border: 0; background: var(--accent); color: #fff; }
.instant { border: 1px solid var(--line); background: #fff; }
.m:focus-visible, .run:focus-visible, .instant:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
/* ---------- END SETUP ---------- */

/* ---------- STEPS ---------- */
.code-line { padding: 12px 14px; border-radius: 10px; background: #111827; color: #e5e7eb; font: 14px/1.5 var(--mono); overflow-x: auto; margin-bottom: 16px; }
.code-line .fn { color: #93c5fd; } .code-line .cm { color: #6b7280; }

.steps { width: 100%; border-collapse: collapse; font-size: 14px; }
.steps th { text-align: left; font-size: 12px; color: var(--muted); font-weight: 600; padding: 0 8px 8px; border-bottom: 1px solid var(--line); }
.steps td { padding: 9px 8px; border-bottom: 1px solid #f2f4f7; font-family: var(--mono); }
.steps tr { animation: row-in .3s ease both; }
.steps tr.now td { background: #fffbeb; }
.chip { display: inline-block; min-width: 30px; padding: 3px 8px; border-radius: 6px; background: #eef2ff; color: #3730a3; font-weight: 700; text-align: center; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font: 600 12px system-ui, sans-serif; }
.tag.yes { background: var(--ok-bg); color: var(--ok); }
.tag.no { background: var(--no-bg); color: var(--no); }
.tag.info { background: #f2f4f7; color: #344054; }
.steps tr.skipped td { color: #98a2b3; }

.result-wrap { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 18px; padding-top: 16px; border-top: 2px solid var(--line); }
.result-label { font-weight: 700; }
.result { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font: 700 15px var(--mono); min-height: 34px; }
.result .chip { animation: pop .35s cubic-bezier(.3, 1.6, .5, 1) both; background: var(--ok-bg); color: var(--ok); }
.result .bracket { color: var(--muted); }
.error { color: var(--no); font-size: 14px; margin-top: 10px; }
/* ---------- END STEPS ---------- */

/* ---------- KEYFRAMES ---------- */
@keyframes row-in { from { opacity: 0; transform: translateX(-10px); } }
@keyframes pop { from { transform: scale(0); } }
@media (prefers-reduced-motion: reduce) {
  .steps tr, .result .chip { animation: none; }
}
/* ---------- END KEYFRAMES ---------- */

/* ---------- SMALL SCREENS ---------- */
@media (max-width: 820px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .steps { font-size: 13px; }
  .steps th:first-child, .steps td:first-child { display: none; }
}
/* ---------- END SMALL SCREENS ---------- */