:root {
  --bg: #f5f3ee;
  --surface: #ffffff;
  --ink: #1d232b;
  --muted: #5f6873;
  --line: #e2ddd3;
  --navy: #1f4e79;
  --navy-ink: #ffffff;
  --sky: #d9e2f3;
  --amber: #e7a614;
  --amber-soft: #fff2cc;
  --ok: #2e7d4f;
  --warn: #b26a00;
  --err: #b3261e;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 40, 0.06), 0 4px 16px rgba(20, 30, 40, 0.05);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --surface: #1c2229;
    --ink: #e8ebee;
    --muted: #9aa4ae;
    --line: #2d353e;
    --navy: #3d7ab8;
    --sky: #23344a;
    --amber-soft: #3a3020;
    --shadow: none;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--navy); }
button, input, textarea { font: inherit; color: inherit; }
button, a.button {
  cursor: pointer;
  color: inherit;
  text-decoration: none;
  display: inline-block;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 8px 14px;
}
button.primary { background: var(--navy); color: var(--navy-ink); border-color: var(--navy); font-weight: 600; }
button.danger { color: var(--err); }
button:disabled { opacity: 0.55; cursor: default; }
input[type="text"], input[type="password"], textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 9px 12px;
}
textarea { resize: vertical; min-height: 70px; }
.brand { font-weight: 800; letter-spacing: -0.02em; font-size: 20px; display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 26px; height: 26px; border-radius: 6px; background: var(--amber); display: grid; place-items: center; color: #1d232b; font-size: 15px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.error-text { color: var(--err); }

/* ---------- landing ---------- */
.landing { max-width: 1040px; margin: 0 auto; padding: 24px 16px 48px; }
.landing header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 48px; }
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: start; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 16px; }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { display: grid; grid-template-columns: 32px 1fr; gap: 12px; align-items: start; }
.steps .n { width: 32px; height: 32px; border-radius: 50%; background: var(--sky); color: var(--navy); font-weight: 700; display: grid; place-items: center; }
.login { padding: 24px; }
.login h2 { margin: 0 0 6px; font-size: 19px; }
.login form { display: grid; gap: 10px; margin-top: 16px; }
.sheets { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 0; }
.sheets span { background: var(--amber-soft); border: 1px solid var(--line); border-radius: 6px; padding: 2px 8px; font-size: 13px; }
.price-tag { font-size: 18px; margin: 0 0 24px; }
.price-tag strong { font-size: 28px; letter-spacing: -0.02em; }
.callout { margin: 40px 0 0; padding: 18px 20px; border-radius: var(--radius); background: var(--amber-soft); border: 1px solid var(--line); }
.callout h2 { margin: 0 0 8px; font-size: 20px; }
.callout p { margin: 0; }
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin: 40px 0 0; }
.features h2 { font-size: 20px; margin: 0 0 10px; }
.features ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; gap: 24px; } }
.landing footer { margin-top: 56px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 16px; }
.legal { margin-top: 8px; }
.legal a { color: var(--muted); }
.legal-doc { max-width: 760px; line-height: 1.55; }
.legal-doc h1 { font-size: 30px; margin-bottom: 4px; }
.legal-doc h2 { font-size: 18px; margin: 28px 0 8px; }
.legal-doc li { margin: 6px 0; }
.fill { background: var(--amber-soft); padding: 0 4px; border-radius: 4px; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; } .landing header { margin-bottom: 28px; } }

/* ---------- app ---------- */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.credit { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.meter { width: 140px; height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; }
.meter > div { height: 100%; background: var(--amber); }
.layout { display: grid; grid-template-columns: 280px 1fr; min-height: calc(100vh - 57px); }
.sidebar { border-right: 1px solid var(--line); padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.sidebar h3 { margin: 0; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.new-project { display: flex; gap: 6px; }
.project-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.project-list li button { width: 100%; text-align: left; border: 1px solid transparent; background: transparent; padding: 9px 10px; display: grid; gap: 2px; }
.project-list li button:hover { background: var(--surface); border-color: var(--line); }
.project-list li button.active { background: var(--surface); border-color: var(--navy); }
.project-list .pname { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.main { padding: 20px 24px 40px; max-width: 980px; width: 100%; }
.main.admin, .main.single { margin: 0 auto; }
.credit-panel .credit { flex-wrap: wrap; }
[hidden] { display: none !important; }
.empty { padding: 48px 24px; text-align: center; color: var(--muted); }
.phead { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin-bottom: 18px; }
.phead h1 { margin: 0; font-size: 24px; letter-spacing: -0.02em; }
.badge { font-size: 12px; font-weight: 700; padding: 3px 9px; border-radius: 99px; background: var(--line); color: var(--ink); }
.badge.running { background: var(--amber-soft); color: var(--warn); }
.badge.idle { background: #dcefe3; color: var(--ok); }
.badge.terminated, .badge.error { background: #f6dcda; color: var(--err); }
@media (prefers-color-scheme: dark) { .badge.idle { background: #1f3a2a; } .badge.terminated, .badge.error { background: #3d2220; } }
.section { padding: 16px 18px; margin-bottom: 16px; }
details.technical { margin-top: 8px; }
details.technical summary { cursor: pointer; margin-bottom: 6px; }
details.technical a.dl, #outputs details.technical a.dl { background: var(--bg); font-weight: 400; }
.stats table { border-collapse: collapse; width: 100%; font-size: 13px; }
.stats th, .stats td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; white-space: nowrap; }
.stats td.n, .stats th.n { text-align: right; font-variant-numeric: tabular-nums; }
.stats .scroll { overflow-x: auto; }
.alert { background: var(--amber-soft); border-left: 3px solid var(--warn); border-radius: 8px; padding: 9px 12px; margin-bottom: 12px; font-size: 14px; }
.section h2 { font-size: 15px; margin: 0 0 12px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.drop { display: block; cursor: pointer; border: 2px dashed var(--line); border-radius: var(--radius); padding: 22px; text-align: center; color: var(--muted); transition: border-color 0.15s, background 0.15s; }
.drop.over { border-color: var(--navy); background: var(--sky); }
.files { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 4px; }
.files li { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 6px 8px; border-radius: 6px; background: var(--bg); font-size: 14px; }
.files li .fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files li button { padding: 2px 8px; font-size: 12px; }
.progress { height: 4px; background: var(--line); border-radius: 99px; overflow: hidden; margin-top: 4px; }
.progress > div { height: 100%; background: var(--navy); width: 0; transition: width 0.2s; }
.outputs a.dl, #outputs a.dl { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border-radius: 8px; background: var(--amber-soft); border: 1px solid var(--line); text-decoration: none; color: var(--ink); font-weight: 600; margin-bottom: 6px; }
.log { display: grid; gap: 8px; max-height: 70vh; overflow-y: auto; padding-right: 4px; }
.ev { font-size: 14px; }
details.section > summary { cursor: pointer; }
.ev.tool { font-size: 13px; color: var(--muted); padding: 3px 8px; border-left: 2px solid var(--line); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ev.tool.err { color: var(--err); border-color: var(--err); }
.ev.msg { background: var(--bg); border-radius: 8px; padding: 10px 12px; }
.ev.user { background: var(--sky); border-radius: 8px; padding: 10px 12px; }
.ev.sys { font-size: 13px; color: var(--muted); }
.ev.grade { font-size: 13px; padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line); }
.ev .who { font-size: 12px; font-weight: 700; color: var(--muted); margin-bottom: 2px; }
.md p { margin: 0 0 8px; }
.md p:last-child { margin-bottom: 0; }
.md h3, .md h4 { margin: 10px 0 6px; font-size: 15px; }
.md ul, .md ol { margin: 0 0 8px; padding-left: 20px; }
.md code { font-family: var(--mono); font-size: 12.5px; background: var(--line); padding: 1px 4px; border-radius: 4px; }
.md table { border-collapse: collapse; margin: 6px 0 10px; font-size: 13px; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--line); padding: 4px 8px; text-align: left; }
.md th { background: var(--sky); }
.working { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--warn); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: 0.3; } }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .main { padding: 16px 16px 40px; }
  .credit .meter { display: none; }
}
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 8px; }
.tiles > div { display: grid; gap: 2px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.tiles strong { font-size: 20px; font-variant-numeric: tabular-nums; }
@media (max-width: 760px) { .tiles { grid-template-columns: 1fr; } }
.limits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 12px; }
.limit { display: grid; gap: 4px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.limit strong { font-variant-numeric: tabular-nums; }
.limit .meter { width: 100%; }
.limit.full .meter > div { background: var(--err); }
@media (max-width: 760px) { .limits { grid-template-columns: 1fr; } }
.note-count { text-align: right; margin-top: 4px; }
.ok-box { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--surface)); }
.ok-box h2 { color: var(--ok); }
.ok-box p { margin: 6px 0; }
.field { display: grid; gap: 4px; margin-bottom: 10px; font-size: 14px; }
.field input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.confirm { border: 1px solid var(--navy); border-radius: 8px; padding: 12px 14px; background: var(--bg); }
.confirm ul { margin: 6px 0 12px; padding-left: 18px; display: grid; gap: 4px; }
.consent { display: flex; gap: 8px; align-items: flex-start; margin: 4px 0 12px; font-size: 14px; line-height: 1.4; }
.consent input { margin-top: 3px; flex: none; }