:root {
  color-scheme: light;
  --bg: #f6f6f3;
  --panel: #ffffff;
  --text: #171717;
  --muted: #707070;
  --faint: #a0a0a0;
  --border: rgba(0, 0, 0, 0.1);
  --shadow: rgba(0,0,0,0.08) 0 0 0 1px, rgba(0,0,0,0.04) 0 10px 30px;
  --radius: 18px;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% -10%, rgba(0,0,0,0.08), transparent 26rem),
    var(--bg);
  color: var(--text);
}

.app {
  width: min(1100px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 32px 0 28px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 64px);
  line-height: .95;
  letter-spacing: -0.06em;
}

.status {
  border-radius: 999px;
  background: rgba(255,255,255,.7);
  box-shadow: rgba(0,0,0,0.08) 0 0 0 1px;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}
.status.ok { color: #137333; }
.status.warn { color: #9a6700; }
.status.err { color: #b42318; }

.panel {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.07);
}

button {
  appearance: none;
  border: 0;
  background: #fff;
  box-shadow: rgba(0,0,0,0.12) 0 0 0 1px;
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .12s ease, background .12s ease;
}
button:hover { background: #f7f7f7; }
button:active { transform: translateY(1px); }
button.primary { background: #171717; color: #fff; box-shadow: none; }
button.primary:hover { background: #000; }
button.danger { color: #b42318; }

textarea {
  display: block;
  width: 100%;
  min-height: min(68vh, 720px);
  resize: vertical;
  border: 0;
  outline: 0;
  padding: 18px;
  color: var(--text);
  background: #fff;
  font: 15px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
textarea::placeholder { color: var(--faint); }

.meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid rgba(0,0,0,0.07);
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin: 14px 4px 0;
}

@media (max-width: 620px) {
  .app { width: min(100vw - 16px, 1100px); padding-top: 16px; }
  .topbar { display: block; }
  .status { display: inline-block; margin-top: 12px; }
  .toolbar { position: sticky; top: 0; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); z-index: 1; }
  button { flex: 1; }
  textarea { min-height: 62vh; padding: 14px; font-size: 14px; }
}