/* TechAo Interview: the TechAo dark stage, green accent, mono labels. */
:root {
  --bg: #050605; --panel: #0c0f0b; --sunken: #111510; --line: #1f261c; --line-2: #2c3628;
  --ink: #eef3e9; --sub: #9aa893; --faint: #66725f; --brand: #92c824; --brand-ink: #0b1203;
  --bad: #ff6b5b; --warn: #f2b33d; --ok: #7dd35a;
  --display: 'Sora', 'Segoe UI', system-ui, sans-serif; --body: 'Manrope', 'Segoe UI', system-ui, sans-serif; --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.6 var(--body); min-height: 100dvh;
  background-image: radial-gradient(rgb(255 255 255 / .05) 1px, transparent 1.6px), radial-gradient(60rem 30rem at 10% -10%, rgb(146 200 36 / .12), transparent 60%);
  background-size: 22px 22px, auto; }
a { color: var(--brand); }
.wrap { width: 100%; max-width: 980px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 30px; height: 30px; }
.brand b { font: 700 19px var(--display); letter-spacing: -.03em; }
.brand span { font: 12px var(--mono); color: var(--faint); }
.eyebrow { font: 500 11px var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--brand); margin: 0; }
h1 { font: 600 clamp(28px, 5vw, 44px)/1.08 var(--display); letter-spacing: -.04em; margin: 10px 0 12px; text-wrap: balance; }
h2 { font: 600 20px var(--display); letter-spacing: -.02em; margin: 0; }
.sub { color: var(--sub); margin: 0; max-width: 62ch; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; }
.grid2 { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
label.l { display: block; font: 500 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sub); margin-bottom: 6px; }
input, textarea, select { width: 100%; background: var(--sunken); color: var(--ink); border: 1px solid var(--line-2); border-radius: 10px; padding: 11px 13px; font: 15px var(--body); }
textarea { font-family: var(--mono); font-size: 14px; min-height: 92px; resize: vertical; }
input:focus, textarea:focus, select:focus, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 10px; padding: 12px 18px; font: 600 14.5px var(--body); cursor: pointer; text-decoration: none; }
.btn.primary { background: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-2); }
.btn.ghost:hover { border-color: var(--brand); }
.btn.sm { padding: 7px 12px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.err { color: var(--bad); background: rgb(255 107 91 / .1); border: 1px solid rgb(255 107 91 / .3); border-radius: 10px; padding: 10px 12px; font-size: 13.5px; margin: 0; }
.muted { color: var(--faint); font-size: 13px; }
.tag { display: inline-block; font: 500 10.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; border-radius: 6px; padding: 2px 7px; background: rgb(255 255 255 / .06); color: var(--sub); }
.tag.ok { background: rgb(125 211 90 / .14); color: var(--ok); } .tag.bad { background: rgb(255 107 91 / .14); color: var(--bad); } .tag.warn { background: rgb(242 179 61 / .14); color: var(--warn); }
pre.code { margin: 10px 0 0; background: #070907; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; font: 13.5px/1.55 var(--mono); color: #d7e3cf; overflow-x: auto; white-space: pre; }
.foot { color: var(--faint); font-size: 12px; text-align: center; padding: 28px 0 36px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }