/* =====================================================================
   Simple UI — standard design system for ai-driven-development projects
   Guide: design-system/README.md. Do not edit per project.
   A project sets its brand in its own brand.css (only the --brand-* tokens and fonts).
   ===================================================================== */

:root{
  /* Brand slot: overridden by the project's brand.css */
  --brand:#1f5f8b;          /* large fills: logo mark, active indicator, top stripe */
  --brand-strong:#174a6c;   /* buttons, links, focus. Must reach 4.5:1 on white */
  --brand-soft:#e7f0f6;     /* selected rows, active nav background */
  --brand-accent:#f2b705;   /* one small highlight only (active nav bar). Optional */
  --brand-ink:#ffffff;      /* text on --brand-strong */

  /* Neutrals */
  --ink:#1d2421; --ink-2:#4b5551; --ink-3:#77817d;
  --line:#dde2df; --line-2:#c9d0cc;
  --bg:#f5f7f6; --surface:#ffffff; --sunk:#eef1ef;

  /* State: never decoration. No red for outcomes about people. */
  --ok:#1e6b45;    --ok-bg:#e3f2e9;
  --attn:#8a5a00;  --attn-bg:#fbefd4;
  --info:#24577d;  --info-bg:#e6eff6;
  --neutral:#46504c; --neutral-bg:#eceeed;
  --error:#a33a2a; --error-bg:#f9e6e2;   /* system errors only (failed save, invalid input) */

  /* Type, spacing, shape */
  --font:"Public Sans","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
  --mono:"Cascadia Mono",Consolas,ui-monospace,monospace;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:20px; --s6:24px; --s8:32px;
  --r:6px; --r-lg:10px;
  --shadow:0 1px 2px rgb(16 24 20 / 6%);
  --sidebar:248px; --topbar:64px;
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.5 var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p{margin:0}
h1{font-size:24px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:16px;line-height:1.3;font-weight:650}
h3{font-size:14px;font-weight:650}
a{color:var(--brand-strong);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--brand-strong);outline-offset:2px}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.01em}   /* IDs and references: same font, aligned digits */
code,.code-text{font-family:var(--mono);font-size:12.5px}
.muted{color:var(--ink-2)} .faint{color:var(--ink-3)}
.small{font-size:12.5px}

/* ---------- App shell ---------- */
.app{display:grid;grid-template-columns:var(--sidebar) 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{height:var(--topbar);display:flex;align-items:center;gap:10px;padding:0 var(--s5);border-bottom:1px solid var(--line)}
.brand-mark{width:32px;height:32px;border-radius:50%;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-weight:800;font-size:13px;letter-spacing:.02em}
.brand b{display:block;font-size:15px;letter-spacing:.06em}
.brand small{display:block;font-size:11px;color:var(--ink-3)}
.nav{padding:var(--s4) var(--s3);display:grid;gap:2px;flex:1;align-content:start}
.nav-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:var(--s3) var(--s3) var(--s1)}
.nav a{display:flex;align-items:center;gap:10px;height:40px;padding:0 var(--s3);border-radius:var(--r);color:var(--ink-2);font-weight:500;position:relative}
.nav a:hover{background:var(--sunk);text-decoration:none;color:var(--ink)}
.nav a.on{background:var(--brand-soft);color:var(--ink);font-weight:650}
.nav a.on::before{content:"";position:absolute;left:calc(-1 * var(--s3));top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--brand)}
.nav .count{margin-left:auto;font-size:11px;font-weight:700;background:var(--sunk);border-radius:10px;padding:1px 7px;color:var(--ink-2)}
.sidebar-foot{border-top:1px solid var(--line);padding:var(--s4) var(--s5);display:flex;gap:10px;align-items:center;font-size:12.5px}
.sidebar-foot small{display:block;color:var(--ink-3)}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--sunk);border:1px solid var(--line-2);display:grid;place-items:center;font-size:11px;font-weight:700;flex:none}

.main{min-width:0;display:flex;flex-direction:column}
.topbar{height:var(--topbar);background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 var(--s8);gap:var(--s4)}
.crumbs{display:flex;gap:var(--s2);align-items:center;color:var(--ink-3);font-size:13px}
.crumbs b{color:var(--ink);font-weight:600}
.org{display:inline-flex;align-items:center;gap:var(--s2);border:1px solid var(--line);border-radius:var(--r);padding:5px 10px;font-size:12.5px;font-weight:600}
.org::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand)}
.top-actions{display:flex;gap:var(--s3);align-items:center}
.icon-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;color:var(--ink-2);font-weight:700}

.page{padding:var(--s8);max-width:1240px;width:100%;display:grid;gap:var(--s6);align-content:start}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:var(--s4)}
.page-head .eyebrow{display:block;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-strong);margin-bottom:var(--s1)}
.page-head p{color:var(--ink-2);margin-top:var(--s1);max-width:70ch}

/* ---------- Layout helpers ---------- */
.grid{display:grid;gap:var(--s5)}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
/* The side column never drops below 380 px: narrower, its lines wrap every few words and the panel reads as squished. */
.main-side{grid-template-columns:minmax(0,1fr) minmax(380px,0.62fr)}
.stack{display:grid;gap:var(--s3)}
.row{display:flex;gap:var(--s3);align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:var(--s3)}

/* Narrow pages (§13): the page is a size container, so these helpers collapse by the width the page really has
   (a phone, a split screen, 200% text), never by the device. */
.page{container:page / inline-size}
@container page (max-width: 800px){ .main-side{grid-template-columns:minmax(0,1fr)} }   /* the side column needs 380, the main 400 */
@container page (max-width: 720px){ .cols-3{grid-template-columns:repeat(2,minmax(0,1fr))} }
@container page (max-width: 520px){ .cols-2,.cols-3{grid-template-columns:minmax(0,1fr)} .page-head{flex-direction:column;align-items:flex-start} }
@container (max-width: 340px){ .kv{grid-template-columns:minmax(0,1fr);row-gap:2px} .kv dd{margin-bottom:8px} }

/* ---------- Card ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:var(--s5);display:grid;gap:var(--s4);align-content:start}
.card-head{display:flex;justify-content:space-between;align-items:baseline;gap:var(--s3)}
.card-head p{color:var(--ink-2);font-size:13px;margin-top:2px}
.card.flush{padding:0;gap:0}
.card.flush .card-head{padding:var(--s4) var(--s5);border-bottom:1px solid var(--line)}
.card.lead{border-top:3px solid var(--brand)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s2);height:38px;padding:0 var(--s4);border-radius:var(--r);border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:600 13.5px var(--font);cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--sunk);text-decoration:none}
.btn.primary{background:var(--brand-strong);border-color:var(--brand-strong);color:var(--brand-ink)}
.btn.primary:hover{filter:brightness(.95)}
.btn.ghost{border-color:transparent;background:transparent;color:var(--brand-strong)}
.btn.block{width:100%}
.btn.sm{height:30px;padding:0 var(--s3);font-size:12.5px}

/* ---------- Forms ---------- */
.form{display:grid;gap:var(--s4)}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s4)}
.field{display:grid;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600}
.field .hint{font-size:12px;color:var(--ink-3)}
.input,.select{height:40px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--surface);padding:0 var(--s3);display:flex;align-items:center;font-size:14px;color:var(--ink)}
.select::after{content:"";margin-left:auto;width:8px;height:8px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);transform:rotate(45deg) translateY(-3px)}
.input.ph{color:var(--ink-3)}
.code{display:flex;gap:var(--s2)}
.code span{width:40px;height:48px;border:1px solid var(--line-2);border-radius:var(--r);display:grid;place-items:center;font-size:20px;font-weight:650}

/* ---------- Table ---------- */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{text-align:left;font-size:12px;font-weight:650;color:var(--ink-3);padding:10px var(--s5);border-bottom:1px solid var(--line);background:var(--surface)}
.table td{padding:12px var(--s5);border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:last-child td{border-bottom:0}
.table tr.sel td{background:var(--brand-soft)}
.table .sub{display:block;font-size:12px;color:var(--ink-3)}
.table tr.link{cursor:pointer}
.table tr.link:hover td{background:var(--sunk)}

/* ---------- Badges, chips, notes ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:650;padding:2px 9px;border-radius:999px;background:var(--neutral-bg);color:var(--neutral);white-space:nowrap}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.attn{background:var(--attn-bg);color:var(--attn)}
.badge.info{background:var(--info-bg);color:var(--info)}
.badge.dot::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.chip{display:inline-flex;align-items:center;font-size:12.5px;padding:3px 10px;border-radius:999px;border:1px solid var(--line-2);color:var(--ink-2);background:var(--surface)}
.note{background:var(--sunk);border-radius:var(--r);padding:var(--s3) var(--s4);font-size:13px;color:var(--ink-2);display:flex;gap:var(--s3);align-items:flex-start}
.note.info{background:var(--info-bg);color:var(--info)}
.note.brand{background:var(--brand-soft);color:var(--ink)}
.note b{color:var(--ink)}
.rules{list-style:none;margin:0;padding:0;display:grid;gap:var(--s3)}
.rules li{display:grid;grid-template-columns:22px 1fr;gap:var(--s2);font-size:13px;color:var(--ink-2)}
.rules li::before{content:"";width:18px;height:18px;border-radius:50%;background:var(--brand-soft);border:2px solid var(--brand);margin-top:1px}
.rules b{color:var(--ink);font-weight:600}

/* ---------- Key-value and timeline ---------- */
.kv{display:grid;grid-template-columns:var(--kv,180px) minmax(0,1fr);gap:10px var(--s4);margin:0;font-size:14px}
.kv dt{color:var(--ink-3)} .kv dd{margin:0}
.timeline{list-style:none;margin:0;padding:0 0 0 var(--s5);border-left:2px solid var(--line);display:grid;gap:var(--s3)}
.timeline li{position:relative;font-size:13.5px}
.timeline li::before{content:"";position:absolute;left:calc(-1 * var(--s5) - 6px);top:5px;width:10px;height:10px;border-radius:50%;background:var(--line-2);border:2px solid var(--surface)}
.timeline li:first-child::before{background:var(--brand)}
.timeline .when{color:var(--ink-3);font-size:12.5px;display:block}

/* ---------- Tiles ---------- */
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:var(--s4) var(--s5);display:grid;gap:2px}
.tile .label{font-size:12.5px;color:var(--ink-2)}
.tile .value{font-size:24px;font-weight:700;font-variant-numeric:tabular-nums}
.tile .detail{font-size:12px;color:var(--ink-3)}

/* ---------- Centered pages (sign-in) ---------- */
.center-page{min-height:100vh;display:grid;place-items:center;background:var(--bg)}
.center-card{width:440px;max-width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:var(--s8);display:grid;gap:var(--s5);border-top:4px solid var(--brand)}
.empty{text-align:center;color:var(--ink-3);padding:var(--s8) var(--s4)}
/* Empty states (§12.7): an icon in a soft tile, a title with its scope, why it is empty and what fills it, who acts
   when it isn't the reader, and one action. Full size fills the card it replaces; compact sits in a list on one line. */
.empty-state{display:grid;justify-items:center;text-align:center;gap:var(--s2);padding:var(--s8) var(--s5);min-height:220px;align-content:center}
.empty-state .es-ic{width:72px;height:72px;border-radius:18px;display:grid;place-items:center;background:var(--sunk);color:var(--ink-2);margin-bottom:var(--s2)}
.empty-state .es-ic svg{width:40px;height:40px}
.empty-state h3{font-size:16px;font-weight:650;color:var(--ink)}
.empty-state p{color:var(--ink-2);max-width:52ch;font-size:13.5px}
.empty-state .es-who{color:var(--ink-3);font-size:12.5px}
.empty-state .btn{margin-top:var(--s2)}
.empty-state.done .es-ic{background:var(--ok-bg);color:var(--ok)}
.empty-state.error .es-ic{background:var(--attn-bg,var(--sunk));color:var(--attn)}
.empty-line{display:flex;align-items:center;gap:var(--s2);color:var(--ink-3);font-size:13px;padding:var(--s3) var(--s5)}
.empty-line svg{width:20px;height:20px;flex:none}
.empty-line a{font-weight:600}
.table td > .empty-line{padding:0}

/* ---------- Tables never squeeze (§12.5, 20 Oct 2026) ---------- */
/* File names in a table may wrap at any character; ordinary words never do (that reads as squashed). */
.card .table code{overflow-wrap:anywhere;white-space:normal}
/* A table in a narrow card reflows instead of squeezing its columns: each row becomes its first cell, with the
   other cells on a line under it. The header row is dropped (each value is a chip, badge or short phrase). */
.card{container-type:inline-size}
@container (max-width: 520px){
  .table thead{display:none}
  .table tr{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:10px;row-gap:2px;padding:10px var(--s5);border-bottom:1px solid var(--line)}
  .table tr:last-child{border-bottom:0}
  .table tr.sel{background:var(--brand-soft)}
  .table tr.sel td{background:none}
  .table tr > td,.table tr > th{border:0;padding:0}
  .table tr > :first-child{flex:1 0 100%}
  .table tr > :not(:first-child){flex:0 0 auto;max-width:100%;font-size:12.5px;color:var(--ink-2)}
  .table td.num{margin-left:auto}
}
/* A table of sentences (.table.labelled) reflows earlier, under 760 px, and keeps its column names: each cell
   shows its label (data-label) above it, so no meaning is lost with the header row. */
@container (max-width: 760px){
  .table.labelled thead{display:none}
  .table.labelled tr{display:grid;gap:6px;padding:12px var(--s5);border-bottom:1px solid var(--line)}
  .table.labelled tr:last-child{border-bottom:0}
  .table.labelled tr > td,.table.labelled tr > th{border:0;padding:0;font-size:inherit;color:inherit;max-width:none}
  .table.labelled td[data-label]::before{content:attr(data-label);display:block;font-size:11.5px;font-weight:650;color:var(--ink-3);margin-bottom:1px}
}
/* A command alone in its cell stays on one line, so it reads as one command (the table reflows first when narrow). */
.card .table td:first-child > code:only-child{white-space:nowrap}

/* §12.5 pair by weight: cards in a row whose content differs a lot keep their own height (the short one is not
   stretched into an empty box); cards of similar weight stay equal height. */
.grid.own-height{align-items:start}