/* ==========================================================================
   Season One — institution portal.
   A signed-in application, not a marketing page: sidebar, dense tables, status
   colour. It deliberately does NOT import s1.css. That sheet is built for a
   marketing site (hard offset shadows, 3px black rules, full-bleed type), and a
   roster of 60 students rendered in it would be unreadable. What carries over is
   the palette, lifted value-for-value from PANCEPrep/Theme.swift so the portal,
   the site and the app cannot drift.

   PROTOTYPE. Every number on these pages is mock data held in portal.js. No
   backend is wired; see the institution platform plan in Notion.
   ========================================================================== */

:root{
  --brand:#0E7C6B; --brand-deep:#0A5B4F; --brand-lite:#E6F2F0;
  --amber:#EE9A1C; --amber-lite:#FDF0DA;
  --leaf:#12875A; --leaf-lite:#E4F4EC;
  --siren:#DB5247; --siren-lite:#FBE9E7;
  --violet:#6B5CE6; --violet-lite:#EEECFC;
  --ink:#121716; --ink-dim:#5B6664; --ink-faint:#8A9694;
  --paper:#FFFFFF; --paper-2:#F6F8F8; --paper-3:#EEF2F1;
  --rule:#E2E8E7; --rule-soft:#EDF1F0;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --shadow:0 1px 2px rgba(18,23,22,.05),0 4px 12px rgba(18,23,22,.05);
  --sidebar:248px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--sans);background:var(--paper-2);color:var(--ink);
  font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit;font-size:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* -- shell ---------------------------------------------------------------- */
.shell{display:grid;grid-template-columns:var(--sidebar) 1fr;min-height:100vh}

.side{
  background:var(--brand-deep);color:#fff;padding:22px 0;
  display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh;
}
.side-brand{
  padding:0 22px 20px;font-family:var(--mono);font-size:13px;font-weight:700;
  letter-spacing:.13em;text-transform:uppercase;line-height:1.35;
}
.side-brand small{display:block;font-size:10.5px;font-weight:400;opacity:.7;letter-spacing:.1em;margin-top:5px}
.side-group{
  padding:16px 22px 6px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:rgba(255,255,255,.45);
}
.side a{
  display:flex;align-items:center;gap:11px;padding:10px 22px;color:rgba(255,255,255,.82);
  font-size:14.5px;text-decoration:none;border-left:3px solid transparent;
}
.side a:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none}
.side a.on{background:rgba(255,255,255,.12);color:#fff;border-left-color:var(--amber);font-weight:600}
.side a .ic{width:18px;text-align:center;opacity:.9}
.side-foot{margin-top:auto;padding:16px 22px 0;border-top:1px solid rgba(255,255,255,.14);font-size:12.5px;color:rgba(255,255,255,.6)}

.main{min-width:0;display:flex;flex-direction:column}
.top{
  background:var(--paper);border-bottom:1px solid var(--rule);
  padding:16px 28px;display:flex;align-items:center;gap:18px;position:sticky;top:0;z-index:5;
}
.top h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.01em}
.top .sub{color:var(--ink-dim);font-size:13px;margin-top:2px}
.top-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.who{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-dim)}
.avatar{
  width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:13.5px;
}
.content{padding:24px 28px 56px;max-width:1500px;width:100%}

/* -- primitives ----------------------------------------------------------- */
.card{background:var(--paper);border:1px solid var(--rule);border-radius:12px;box-shadow:var(--shadow)}
.card-head{
  padding:15px 18px;border-bottom:1px solid var(--rule-soft);
  display:flex;align-items:center;gap:12px;
}
.card-head h2{margin:0;font-size:15.5px;font-weight:700}
.card-head .hint{color:var(--ink-faint);font-size:12.5px}
.card-head .spacer{margin-left:auto}
.card-body{padding:18px}
.card-body.flush{padding:0}

.btn{
  border:1px solid var(--brand);background:var(--brand);color:#fff;
  padding:9px 15px;border-radius:9px;font-weight:600;font-size:13.5px;
}
.btn:hover{background:var(--brand-deep);border-color:var(--brand-deep)}
.btn.ghost{background:var(--paper);color:var(--ink);border-color:var(--rule)}
.btn.ghost:hover{background:var(--paper-3)}
.btn.danger{background:var(--siren);border-color:var(--siren)}
.btn.sm{padding:6px 11px;font-size:12.5px;border-radius:7px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

.grid{display:grid;gap:16px}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-2-1{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}

/* -- stat tiles ----------------------------------------------------------- */
.stat{padding:16px 18px}
.stat .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint)}
.stat .val{font-size:30px;font-weight:700;letter-spacing:-.02em;margin-top:6px;line-height:1}
.stat .delta{font-size:12.5px;color:var(--ink-dim);margin-top:6px}
.stat .delta.up{color:var(--leaf)}
.stat .delta.down{color:var(--siren)}

/* -- alerts bar ----------------------------------------------------------- */
.alerts{border-left:4px solid var(--siren)}
.alert-row{
  display:flex;align-items:flex-start;gap:12px;padding:13px 18px;
  border-bottom:1px solid var(--rule-soft);
}
.alert-row:last-child{border-bottom:0}
.alert-row .dot{width:9px;height:9px;border-radius:50%;background:var(--siren);margin-top:6px;flex:none}
.alert-row.warn .dot{background:var(--amber)}
.alert-row .txt{min-width:0}
.alert-row .txt b{display:block;font-size:14px}
.alert-row .txt span{color:var(--ink-dim);font-size:13px}
.alert-row .act{margin-left:auto;flex:none}

/* -- tables --------------------------------------------------------------- */
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
thead th{
  text-align:left;padding:11px 14px;background:var(--paper-3);color:var(--ink-dim);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  font-weight:600;white-space:nowrap;border-bottom:1px solid var(--rule);
}
tbody td{padding:12px 14px;border-bottom:1px solid var(--rule-soft);vertical-align:middle}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--paper-2)}
td.num{text-align:right;font-variant-numeric:tabular-nums}
.who-cell{display:flex;align-items:center;gap:10px}
.who-cell .avatar{width:30px;height:30px;font-size:12px}
.who-cell b{font-weight:600}
.who-cell small{display:block;color:var(--ink-faint);font-size:11.5px}

/* -- pills ---------------------------------------------------------------- */
.pill{
  display:inline-block;padding:3px 9px;border-radius:999px;font-size:11.5px;font-weight:600;
  white-space:nowrap;
}
.pill.ok{background:var(--leaf-lite);color:var(--leaf)}
.pill.warn{background:var(--amber-lite);color:#8A5B08}
.pill.bad{background:var(--siren-lite);color:var(--siren)}
.pill.neutral{background:var(--paper-3);color:var(--ink-dim)}
.pill.ai{background:var(--violet-lite);color:var(--violet)}

/* -- bars ----------------------------------------------------------------- */
.bar{height:7px;border-radius:999px;background:var(--paper-3);overflow:hidden;min-width:70px}
.bar i{display:block;height:100%;background:var(--brand);border-radius:999px}
.bar i.warn{background:var(--amber)}
.bar i.bad{background:var(--siren)}
.bar-row{display:flex;align-items:center;gap:10px}
.bar-row span{font-variant-numeric:tabular-nums;font-size:12.5px;color:var(--ink-dim);min-width:34px;text-align:right}

/* Column chart, pure CSS — no chart library on a prototype. */
/* `align-items:stretch` and an explicit `height:100%` on the column, not `flex-end`:
   a percentage height on the bar needs a *definite* parent height to resolve against,
   and a flex-end column is only as tall as its content, so every bar computed to zero. */
.cols{display:flex;align-items:stretch;gap:10px;height:168px;padding-top:8px}
.cols .col{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;min-width:0}
.cols .col i{display:block;background:var(--brand);border-radius:5px 5px 0 0;min-height:3px}
.cols .col i.low{background:var(--siren)}
.cols .col i.mid{background:var(--amber)}
.cols .col b{font-size:11px;font-weight:600;text-align:center;color:var(--ink-dim);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cols .col em{font-style:normal;font-size:11px;text-align:center;color:var(--ink-faint)}

/* -- forms ---------------------------------------------------------------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-family:var(--mono);font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-dim)}
.field input,.field select,.field textarea{
  font-family:var(--sans);font-size:14.5px;padding:10px 12px;border:1px solid var(--rule);
  border-radius:9px;background:var(--paper);color:var(--ink);width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);outline:none}
.field textarea{min-height:96px;resize:vertical}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}

.drop{
  border:2px dashed var(--rule);border-radius:12px;padding:26px;text-align:center;
  color:var(--ink-dim);background:var(--paper-2);
}
.drop b{display:block;color:var(--ink);margin-bottom:4px}

.check{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:14px}
.check input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand);flex:none}

.empty{padding:44px 20px;text-align:center;color:var(--ink-dim)}
.empty b{display:block;font-size:16px;color:var(--ink);margin-bottom:6px}

.note{
  background:var(--brand-lite);border:1px solid #CFE4E0;border-radius:10px;
  padding:12px 14px;font-size:13px;color:var(--brand-deep);
}
.note.proto{background:var(--amber-lite);border-color:#F2DFBE;color:#7A4F06}

.sect-title{font-size:13px;font-family:var(--mono);letter-spacing:.11em;text-transform:uppercase;
  color:var(--ink-faint);margin:26px 0 12px}
.sect-title:first-child{margin-top:0}

/* -- sign in -------------------------------------------------------------- */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%)}
.auth{width:100%;max-width:404px;background:var(--paper);border-radius:16px;
  box-shadow:0 18px 50px rgba(0,0,0,.22);padding:30px}
.auth h1{margin:0 0 6px;font-size:21px}
.auth p.lede{margin:0 0 22px;color:var(--ink-dim);font-size:14px}
.auth .btn{width:100%;padding:12px;font-size:15px}
.auth-alt{text-align:center;margin-top:16px;font-size:13.5px;color:var(--ink-dim)}

@media(max-width:1100px){
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-3,.g-2-1{grid-template-columns:1fr}
}
@media(max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;overflow-x:auto;padding:10px;gap:2px;align-items:center}
  .side-brand,.side-group,.side-foot{display:none}
  .side a{border-left:0;border-bottom:3px solid transparent;padding:9px 13px;white-space:nowrap;border-radius:8px}
  .side a.on{border-left:0;border-bottom-color:var(--amber)}
  .content{padding:18px 16px 44px}
  .top{padding:14px 16px}
  .g-2,.g-4{grid-template-columns:1fr}
}