:root {
  /* Brand neutrals */
  --white: #ffffff;
  --light-1: #fafafa;
  --light-2: #f5f5f5;
  --outline: #e2e8f0;
  --dark: #191a19;
  --black: #000000;

  /* Accent / status — used sparingly, mostly for states & small highlights */
  --emerald: #007a55; --emerald-200: #a4f4cf;
  --amber: #e17100;  --amber-200: #f09e0f;
  --red: #e7000b;    --red-200: #ffc9c9;

  /* Semantic */
  --bg: var(--light-2);
  --surface: var(--white);
  --surface-2: var(--light-1);
  --border: var(--outline);
  --text: var(--dark);
  --muted: #71717a;
  --accent: var(--emerald);
  --ok: var(--emerald); --ok-weak: var(--emerald-200);
  --warn: var(--amber);
  --error: var(--red);

  --radius: 10px;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; height: 100%; }

body {
  font-family: var(--sans);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.error { color: var(--error); }
.small { font-size: 12px; }

/* ---- Top bar ------------------------------------------------------------ */
.topbar {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 56px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.brandbar { display: inline-flex; align-items: baseline; gap: 9px; }
.brand {
  display: inline-flex;
  align-items: baseline;
  color: var(--text);
  text-decoration: none;
}
.brand__word { font-family: var(--serif); font-weight: 600; font-size: 19px; letter-spacing: 0.2px; }
.brand__tag {
  align-self: center;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: 1px 6px;
  border-radius: 999px;
}
.brand__ver { font-size: 12px; color: var(--muted); }

.nav { display: flex; gap: 2px; align-items: center; }
.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.icon { flex: 0 0 auto; }
.tab:hover { background: var(--light-2); color: var(--text); }
.tab--active { color: var(--text); background: var(--light-2); }
.tab--back { color: var(--muted); margin-right: 10px; font-weight: 400; }

/* ---- Layout ------------------------------------------------------------- */
.view { flex: 1 1 auto; overflow: auto; padding: 32px 24px; }
.page { max-width: 1080px; margin: 0 auto; }
.page--wide { max-width: 1440px; }
/* The one "serif moment" per page: the H1. */
.page__head h1 { margin: 0 0 6px; font-family: var(--serif); font-weight: 600; font-size: 26px; letter-spacing: 0.2px; }
.page__head p { margin: 0 0 20px; }

/* ---- Forms / buttons ---------------------------------------------------- */
.toolbar { margin-bottom: 24px; }
.newproject { display: flex; gap: 8px; }
.input {
  flex: 1 1 auto;
  max-width: 360px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  background: var(--surface);
  color: var(--text);
}
.input:focus { outline: none; border-color: var(--dark); box-shadow: 0 0 0 3px rgba(25,26,25,0.08); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.btn:hover { background: var(--light-2); border-color: #cbd5e1; }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn--primary { background: var(--dark); color: var(--white); border-color: var(--dark); }
.btn--primary:hover { background: #000; border-color: #000; }
.btn--sm { padding: 4px 9px; font-size: 12px; }

/* ---- Project cards ------------------------------------------------------ */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(264px, 1fr)); gap: 14px; }
.card {
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.card:hover { border-color: var(--dark); box-shadow: 0 2px 14px rgba(0,0,0,0.06); }
.card__title { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; }
.card__icon { color: var(--muted); }
.card__desc { color: var(--muted); font-size: 13px; }
.card__meta { display: flex; flex-wrap: wrap; gap: 6px; }
.card__id { color: var(--muted); font-size: 11px; word-break: break-all; }

.badge {
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--light-2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.badge--ok { background: var(--emerald-200); color: #064e3b; border-color: transparent; }

.placeholder {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 56px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
}
.placeholder .btn { margin-top: 14px; }

/* ---- Setup tab ---------------------------------------------------------- */
.setup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 1fr);
  gap: 16px;
  align-items: start;
}
.setup-main { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.setup-side { display: flex; flex-direction: column; gap: 16px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.panel--plot { padding: 10px; }
.panel__title { margin: 0 0 12px; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.7px; color: var(--muted); }
.scene { width: 100%; height: 480px; }

.row { display: flex; gap: 8px; align-items: center; }

/* Tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th {
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding: 8px;
}
.tbl td { padding: 8px; border-bottom: 1px solid var(--light-2); }
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl td.num { font-family: var(--mono); text-align: right; }
.tbl td.center { text-align: center; }
select.input { max-width: none; padding: 5px 7px; }

/* Checklist */
.checklist { list-style: none; margin: 0 0 12px; padding: 0; }
.check { display: flex; align-items: center; gap: 9px; padding: 5px 0; color: var(--muted); font-size: 14px; }
.check--ok { color: var(--text); }
.check__mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--light-2); color: var(--muted); font-size: 11px;
}
.check--ok .check__mark { background: var(--emerald-200); color: #064e3b; }

/* Baseline */
.baseline-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.zones { display: flex; gap: 2px; border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
.zone { display: flex; align-items: center; gap: 5px; padding: 5px 9px; font-size: 13px; cursor: pointer; }
.baseline-epoch { margin-top: 12px; }
.epoch { font-size: 13px; }

/* ---- Data tab ----------------------------------------------------------- */
.controls { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.ctl { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.ctl--inline { flex-direction: row; align-items: center; gap: 6px; }
.ctl__l { color: var(--muted); font-size: 12px; }

.status { font-size: 13px; color: var(--muted); padding: 0 6px; align-self: center; }
.status--ok { color: var(--emerald); }
.status--err { color: var(--error); }

.hidden { display: none !important; }

.plotbar { padding: 4px 6px 8px; }

.plot3 { width: 100%; height: 640px; }

/* Download panel */
.dl__text { margin: 0 0 10px; font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.progress {
  height: 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--light-2);
  overflow: hidden;
  margin-bottom: 12px;
}
.progress__fill { height: 100%; width: 0%; background: var(--emerald); transition: width 0.4s ease; }

/* ---- Toast -------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 11px 18px;
  border-radius: 8px;
  background: var(--dark);
  color: var(--white);
  font-size: 14px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.18);
  z-index: 50;
}
.toast--success { background: var(--emerald); }
.toast--error { background: var(--red); }

/* ---- Analytics consent notice ------------------------------------------- */
.consent {
  position: fixed;
  bottom: 12px;
  left: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 420px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--light-2);
  color: var(--dark);
  font-size: 12px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.10);
  z-index: 40;
}
.consent__close {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  color: inherit;
  padding: 2px 4px;
}