:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #0d0f11;
  --panel: #15181b;
  --panel-2: #1c2024;
  --line: #2b3137;
  --text: #eef1f4;
  --muted: #9da7b0;
  --accent: #d8ff59;
  --danger: #ff7b72;
  --good: #76d6a2;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left)); }
button, input, textarea, select { font: inherit; }
.topbar, footer { max-width: 1500px; margin: 0 auto; }
.topbar { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.eyebrow { color: var(--muted); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.65rem, 4vw, 2.25rem); letter-spacing: -.04em; }
h2 { font-size: 1rem; }
p { color: var(--muted); font-size: .88rem; }
.status { border: 1px solid var(--line); background: var(--panel); padding: 8px 11px; border-radius: 999px; font-size: .78rem; white-space: nowrap; }
.status-ready { color: var(--good); }
.status-error { color: var(--danger); }
.layout { max-width: 1500px; margin: 12px auto 0; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 14px; }
.panel { min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.panel-head { padding: 16px; display: flex; align-items: center; justify-content: space-between; gap: 14px; border-bottom: 1px solid var(--line); }
.panel-head > div:first-child { display: grid; gap: 4px; }
.actions { display: flex; align-items: center; gap: 8px; }
.button { border: 1px solid transparent; border-radius: 11px; padding: 10px 13px; cursor: pointer; font-weight: 650; min-height: 42px; }
.button:disabled { opacity: .45; cursor: not-allowed; }
.primary { background: var(--accent); color: #10120a; }
.secondary { background: var(--panel-2); color: var(--text); border-color: var(--line); }
.danger { background: transparent; color: var(--danger); border-color: #573535; }
.file-button { position: relative; overflow: hidden; display: inline-flex; align-items: center; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
textarea { display: block; width: 100%; min-height: 57vh; resize: vertical; border: 0; outline: 0; background: #101214; color: #e8edf2; padding: 16px; line-height: 1.48; font: 13.5px/1.48 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; tab-size: 2; }
.runbar { display: flex; gap: 10px; padding: 12px; border-top: 1px solid var(--line); align-items: end; }
.args-field { min-width: 0; flex: 1; display: grid; gap: 5px; }
.args-field span, .plot-controls span { font-size: .74rem; color: var(--muted); }
input, select { width: 100%; border: 1px solid var(--line); color: var(--text); background: var(--panel-2); border-radius: 9px; padding: 9px 10px; outline: none; }
.tabs { display: flex; padding: 8px; gap: 5px; border-bottom: 1px solid var(--line); }
.tab { color: var(--muted); background: transparent; border: 0; border-radius: 9px; padding: 9px 12px; cursor: pointer; }
.tab.active { color: var(--text); background: var(--panel-2); }
.badge { display: inline-grid; place-items: center; min-width: 19px; height: 19px; border-radius: 99px; background: #30363c; font-size: .7rem; margin-left: 3px; }
.tab-page { display: none; }
.tab-page.active { display: block; }
.console { margin: 0; height: calc(57vh + 67px); overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; background: #101214; padding: 16px; color: #d9e0e6; font: 12.5px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.file-list { min-height: calc(57vh + 67px); padding: 10px; }
.file-list.empty { display: grid; place-items: center; color: var(--muted); }
.file-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; align-items: center; padding: 11px 8px; border-bottom: 1px solid var(--line); }
.file-meta { min-width: 0; }
.file-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-size { color: var(--muted); font-size: .74rem; margin-top: 3px; }
.file-actions { display: flex; gap: 6px; }
.file-actions button { min-height: 34px; padding: 6px 9px; }
.plot-controls { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.plot-controls label { display: grid; gap: 4px; }
#plot { display: block; width: 100%; height: auto; max-height: 58vh; background: #101214; }
.hint { padding: 12px; border-top: 1px solid var(--line); }
.hidden { display: none !important; }
footer { display: flex; justify-content: space-between; gap: 18px; padding: 16px 2px 0; color: var(--muted); font-size: .75rem; }
footer a { color: var(--text); }
@media (max-width: 900px) {
  body { padding-left: 10px; padding-right: 10px; }
  .layout { grid-template-columns: 1fr; }
  textarea { min-height: 48vh; }
  .console, .file-list { height: auto; min-height: 42vh; }
}
@media (max-width: 620px) {
  .topbar { align-items: flex-start; }
  .panel-head { align-items: flex-start; flex-direction: column; }
  .actions.compact { width: 100%; }
  .actions.compact > * { flex: 1; justify-content: center; text-align: center; }
  .runbar { align-items: stretch; flex-wrap: wrap; }
  .args-field { flex-basis: 100%; }
  .runbar .button { flex: 1; }
  .plot-controls { grid-template-columns: 1fr 1fr; }
  .plot-controls label:first-child { grid-column: 1 / -1; }
  footer { flex-direction: column; }
}