/* Friendly interface — shared design system (BUILD BLOCK 1).
   Additive; used only by the ui_*.html shells. Light, calm, high-signal. */
:root{
  --bg:#f5f6f8; --surface:#ffffff; --surface-2:#fafbfc;
  --ink:#1f2430; --muted:#6b7280; --line:#e6e8ec; --line-2:#eef0f3;
  --accent:#2563eb; --accent-soft:#eaf1ff;
  --good:#059669; --good-soft:#e7f6ef;
  --warn:#c2760a; --warn-soft:#fdf3e3;
  --bad:#dc2626; --bad-soft:#fdecec;
  --new:#7c3aed; --new-soft:#f1ebfd;
  --radius:10px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.04);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:14px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;}
.wrap{max-width:1200px;margin:0 auto;padding:0 18px 60px;}
.wide{max-width:1600px;}
a{color:var(--accent);text-decoration:none;} a:hover{text-decoration:underline;}
h1{font-size:22px;margin:18px 0 2px;font-weight:650;}
h2{font-size:15px;margin:0 0 10px;font-weight:600;}
.sub{color:var(--muted);margin:0 0 18px;}

/* header bar */
.uihead{display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:10px 18px;background:var(--surface);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20;box-shadow:var(--shadow);}
.uihead .brand{font-weight:700;letter-spacing:.2px;}
.uihead .flow{display:flex;gap:4px;flex-wrap:wrap;font-size:13px;}
.uihead .flow a{color:var(--muted);padding:4px 9px;border-radius:7px;}
.uihead .flow a:hover{background:var(--surface-2);text-decoration:none;}
.uihead .flow a.on{background:var(--accent-soft);color:var(--accent);font-weight:600;}
.uihead .pills{margin-left:auto;display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted);}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);
  border-radius:999px;background:var(--surface-2);}
.pill b{color:var(--ink);font-weight:600;}

/* cards + panels */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px;margin:16px 0;}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media(max-width:820px){.grid2{grid-template-columns:1fr;}}

/* form controls */
label.fld{display:block;margin:0 0 12px;font-size:13px;color:var(--muted);}
label.fld > span{display:block;margin-bottom:4px;font-weight:500;color:var(--ink);}
input[type=text],input[type=number],select,textarea{width:100%;padding:8px 10px;border:1px solid var(--line);
  border-radius:8px;background:var(--surface);font:inherit;color:var(--ink);}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent);}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:end;}
.row > *{flex:1;min-width:120px;}

/* chips (multi-select) */
.chips{display:flex;gap:8px;flex-wrap:wrap;}
.chip{padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);
  cursor:pointer;user-select:none;font-size:13px;transition:all .12s;}
.chip[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600;}
.chip:hover{border-color:var(--accent);}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:8px;border:1px solid var(--accent);
  background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer;}
.btn:hover{filter:brightness(1.06);text-decoration:none;}
.btn.ghost{background:var(--surface);color:var(--accent);}
.btn.subtle{background:var(--surface-2);color:var(--ink);border-color:var(--line);font-weight:500;}
.btn[disabled],.btn.disabled{opacity:.5;cursor:not-allowed;filter:none;}
.btn.sm{padding:5px 10px;font-size:12px;}

/* status text + reserved placeholders */
.reserved{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border:1px dashed #c4c9d4;
  border-radius:7px;color:var(--muted);background:repeating-linear-gradient(45deg,#fbfbfc,#fbfbfc 6px,#f4f5f7 6px,#f4f5f7 12px);
  font-size:12px;font-style:italic;}
.muted{color:var(--muted);} .mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;}
.small{font-size:12px;} .nowrap{white-space:nowrap;}

/* state badges */
.badge{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;border-radius:6px;font-size:12px;font-weight:600;}
.b-valid{background:var(--good-soft);color:var(--good);}
.b-missing{background:var(--line-2);color:var(--muted);}
.b-suspect{background:var(--warn-soft);color:var(--warn);}
.b-multiple{background:var(--bad-soft);color:var(--bad);}
.b-new{background:var(--new-soft);color:var(--new);}

/* tables */
table.tbl{width:100%;border-collapse:collapse;font-size:13px;}
table.tbl th{text-align:left;color:var(--muted);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line);
  position:sticky;top:0;background:var(--surface);white-space:nowrap;}
table.tbl td{padding:9px 10px;border-bottom:1px solid var(--line-2);vertical-align:top;}
table.tbl tr:hover td{background:var(--surface-2);}
.scrollx{overflow-x:auto;-webkit-overflow-scrolling:touch;}

/* attention/filter bar */
.attn{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0;}
.attn button{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:6px 12px;
  cursor:pointer;font:inherit;display:flex;align-items:center;gap:8px;}
.attn button.on{border-color:var(--accent);background:var(--accent-soft);}
.attn .n{font-weight:700;} .attn .lbl{color:var(--muted);font-size:12px;}

/* callout */
.callout{border-left:3px solid var(--warn);background:var(--warn-soft);padding:10px 14px;border-radius:8px;margin:10px 0;}
.callout.ok{border-color:var(--good);background:var(--good-soft);}
.banner{border-left:3px solid var(--good);background:var(--good-soft);padding:10px 14px;border-radius:8px;
  margin:0 0 14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}

/* modal */
.modal-back{position:fixed;inset:0;background:rgba(16,24,40,.45);display:none;align-items:flex-start;
  justify-content:center;z-index:50;padding:40px 16px;overflow:auto;}
.modal-back.open{display:flex;}
.modal{background:var(--surface);border-radius:12px;max-width:560px;width:100%;padding:22px;box-shadow:0 12px 40px rgba(16,24,40,.25);}

.spark{display:inline-block;height:20px;vertical-align:middle;}
.empty{color:var(--muted);text-align:center;padding:40px;font-style:italic;}