/* NEETprep — Student ledger. Same ink/marigold family as the ads dashboard;
   chart marks use a slightly deeper, validated variant of the brand hues so
   they hold up as data (see build_student_data.py for the source data). */
:root{
  --ink:#0E1726; --ink-2:#0b1320; --panel:#142033; --panel-2:#18263c;
  --rule:#233247; --rule-soft:#1b2840;
  --paper:#E8EDF4; --muted:#7C8BA3; --muted-2:#56657e;
  --marigold:#F2A93B; --marigold-dim:#9a6f2b;
  --teal:#46C7B8; --clay:#D9694B; --violet:#9B8CFF;
  --good:#46C7B8; --warn:#F2A93B; --bad:#D9694B;
  /* validated chart marks (OKLCH L~0.60, dark surface #0E1726) — see dataviz skill */
  --c-physics:#009583; --c-chemistry:#7560ff; --c-biology:#b56d00;
  --c-right:#009583; --c-wrong:#d9471f;
  --shadow:0 1px 0 rgba(255,255,255,.03), 0 16px 40px -24px rgba(0,0,0,.8);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--ink); color:var(--paper);
  font-family:Inter,-apple-system,Segoe UI,Roboto,sans-serif; font-size:14px; line-height:1.5;
  background-image:radial-gradient(1200px 600px at 78% -10%, rgba(242,169,59,.06), transparent 60%);
}
.mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
b{font-weight:600}
a{color:var(--marigold);text-decoration:none}
a:hover{text-decoration:underline}

/* ── header ─────────────────────────────────────────────── */
header{
  display:flex;justify-content:space-between;align-items:flex-end;gap:28px;
  padding:26px 32px 22px;border-bottom:1px solid var(--rule);flex-wrap:wrap;
}
.brand{display:flex;flex-direction:column;gap:3px}
.eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--marigold);font-weight:600}
h1{margin:0;font-family:"Space Grotesk",sans-serif;font-size:27px;font-weight:600;letter-spacing:-.01em}
.thesis{color:var(--muted);font-size:13px}
.thesis em{color:var(--paper);font-style:normal;font-weight:500}
.built{font-size:11px;color:var(--muted-2);text-align:right;line-height:1.7}
.built b{color:var(--muted)}

/* ── controls ───────────────────────────────────────────── */
.controls{display:flex;gap:22px;align-items:flex-end;padding:18px 32px;flex-wrap:wrap;border-bottom:1px solid var(--rule);background:var(--ink-2)}
.field{display:flex;flex-direction:column;gap:7px}
.field.grow{flex:1 1 220px;max-width:340px}
.field>span{font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
select,input[type=date],input[type=search]{
  background:var(--panel);color:var(--paper);border:1px solid var(--rule);border-radius:9px;
  padding:8px 12px;font-size:13.5px;min-width:148px;color-scheme:dark;font-family:inherit;width:100%;
}
input[type=search]{min-width:0}
select:focus,input:focus,.seg button:focus-visible{outline:2px solid var(--marigold);outline-offset:1px}

/* ── HubSpot-style date range picker (shared with ads dashboard) ──────── */
.daterange{position:relative}
.dr-trigger{
  display:flex;align-items:center;gap:10px;min-width:236px;cursor:pointer;text-align:left;
  background:var(--panel);color:var(--paper);border:1px solid var(--rule);border-radius:9px;
  padding:8px 12px;font-family:inherit;font-size:13.5px;
}
.dr-trigger:hover{border-color:var(--muted-2)}
.dr-trigger[aria-expanded="true"]{border-color:var(--marigold)}
.dr-label{font-weight:600;white-space:nowrap}
.dr-sub{color:var(--muted);font-size:12px}
.dr-caret{margin-left:auto;color:var(--muted);font-size:10px;transition:transform .18s ease}
.dr-trigger[aria-expanded="true"] .dr-caret{transform:rotate(180deg)}
.dr-pop{
  position:absolute;top:calc(100% + 8px);left:0;z-index:30;min-width:252px;
  background:var(--panel-2);border:1px solid var(--rule);border-radius:12px;
  box-shadow:var(--shadow);padding:8px;
}
.dr-pop[hidden]{display:none}
.dr-presets{display:flex;flex-direction:column;gap:1px}
.dr-presets button{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  background:transparent;color:var(--paper);border:0;border-radius:7px;
  padding:8px 11px;text-align:left;cursor:pointer;font-family:inherit;font-size:13px;
}
.dr-presets button .rng{color:var(--muted-2);font-size:11px;font-family:"IBM Plex Mono",monospace}
.dr-presets button:hover{background:var(--panel)}
.dr-presets button.on{background:var(--marigold);color:#1c1303;font-weight:600}
.dr-presets button.on .rng{color:#5c4410}
.dr-custom{display:flex;gap:10px;margin-top:8px;padding-top:10px;border-top:1px solid var(--rule)}
.dr-custom label{display:flex;flex-direction:column;gap:5px}
.dr-custom label>span{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.dr-custom input[type=date]{min-width:132px}


/* ── panels & table ─────────────────────────────────────── */
.panel{padding:22px 32px}
.panel-h{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.panel-h h2{font-family:"Space Grotesk",sans-serif;font-size:16px;font-weight:600;margin:0}
.panel-h .hint{color:var(--muted);font-size:12px}
.spacer{margin-left:auto}

.tablewrap{border:1px solid var(--rule);border-radius:12px;overflow:auto;box-shadow:var(--shadow);max-height:70vh}
table{border-collapse:collapse;width:100%}
th,td{padding:10px 12px;text-align:right;border-bottom:1px solid var(--rule-soft)}
td{white-space:nowrap}
td.mono,th.num{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}
th{
  position:sticky;top:0;background:var(--panel);color:var(--muted);font-weight:600;font-size:11px;
  letter-spacing:.05em;text-transform:uppercase;cursor:pointer;user-select:none;z-index:2;
  white-space:normal;line-height:1.4;max-width:150px;
}
th:hover{color:var(--paper)}
th.sorted{color:var(--marigold)}
th .car{font-size:9px;opacity:.8}
th:first-child,td:first-child{text-align:left;position:sticky;left:0;background:var(--panel);z-index:1}
tbody td:first-child{background:var(--ink);cursor:pointer}
tbody tr:hover td,tbody tr:hover td:first-child{background:var(--panel-2)}
tbody tr{cursor:pointer}
tbody tr:last-child td{border-bottom:0}
.sname{display:flex;align-items:center;gap:10px;max-width:230px}
.avatar{
  width:28px;height:28px;border-radius:8px;flex:0 0 28px;display:flex;align-items:center;justify-content:center;
  font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:11.5px;color:#0c0a06;
}
.sname .nm{overflow:hidden}
.sname .nm b{display:block;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.sname .nm small{color:var(--muted-2);font-size:11px}
.deltabar{display:inline-block;height:5px;border-radius:3px;background:var(--rule-soft);width:64px;position:relative;overflow:hidden;vertical-align:middle;margin-left:8px}
.deltabar i{position:absolute;left:0;top:0;bottom:0;background:var(--marigold);border-radius:3px}

footer{color:var(--muted);font-size:11.5px;padding:22px 32px 40px;border-top:1px solid var(--rule);line-height:1.7}
footer b{color:var(--muted)}
.err{padding:32px;color:var(--clay);font-family:"IBM Plex Mono",monospace;white-space:pre-wrap}

/* ── student profile — full screen ─────────────────────────── */
.profile{
  position:fixed;inset:0;z-index:41;background:var(--ink-2);overflow-y:auto;
  opacity:0;transform:translateY(10px);transition:opacity .22s ease,transform .22s cubic-bezier(.22,1,.36,1);
}
.profile[hidden]{display:none}
.profile.open{opacity:1;transform:translateY(0)}
.profile-inner{max-width:920px;margin:0 auto;padding:30px 32px 80px}

.d-head{display:flex;align-items:flex-start;gap:14px;position:sticky;top:0;background:var(--ink-2);
  padding:4px 0 16px;margin:-4px 0 0;z-index:2}
.d-avatar{
  width:52px;height:52px;border-radius:14px;flex:0 0 52px;display:flex;align-items:center;justify-content:center;
  font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:19px;color:#0c0a06;
}
.d-name{font-family:"Space Grotesk",sans-serif;font-size:21px;font-weight:600;letter-spacing:-.01em}
.d-sub{color:var(--muted);font-size:12.5px;margin-top:3px}
.d-sub span{white-space:nowrap}
.d-sub span+span::before{content:"·";margin:0 7px;color:var(--rule)}
.d-close{
  background:var(--panel);border:1px solid var(--rule);color:var(--muted);
  width:36px;height:36px;border-radius:9px;cursor:pointer;font-size:17px;line-height:1;flex:0 0 36px;
  margin-top:2px;
}
.d-close:hover{color:var(--paper);border-color:var(--muted-2)}

.d-kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1px;margin-top:22px;background:var(--rule);border:1px solid var(--rule);border-radius:12px;overflow:hidden}
.d-kpi{background:var(--ink);padding:13px 14px}
.d-kpi .v{font-family:"IBM Plex Mono",monospace;font-size:19px;font-weight:500}
.d-kpi .k{font-size:10.5px;color:var(--muted);margin-top:3px}

.d-sec{margin-top:26px}
.d-sec h3{font-family:"Space Grotesk",sans-serif;font-size:13.5px;font-weight:600;margin:0 0 12px;
  color:var(--muted);letter-spacing:.03em;text-transform:uppercase}

/* subject bifurcation cards */
.subjects{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.d-sec h3 .hint{text-transform:none;letter-spacing:0;font-weight:400;color:var(--muted-2);font-size:11.5px}
.subj{background:var(--panel);border:1px solid var(--rule);border-radius:11px;padding:13px 14px;cursor:pointer;transition:border-color .15s ease,transform .15s ease}
.subj:hover,.subj:focus-visible{border-color:var(--muted-2);transform:translateY(-1px)}
.subj:focus-visible{outline:2px solid var(--marigold);outline-offset:1px}
.subj .sname2{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--paper)}
.subj .dot{width:8px;height:8px;border-radius:2.5px}
.subj .sval{font-family:"IBM Plex Mono",monospace;font-size:19px;font-weight:600;margin-top:8px}
.subj .slab{font-size:10.5px;color:var(--muted);margin-top:1px}
.subj .sbar{margin-top:9px;height:6px;border-radius:3px;background:var(--rule-soft);overflow:hidden}
.subj .sbar i{display:block;height:100%;border-radius:3px}
.subj .sacc{font-size:10.5px;color:var(--muted-2);margin-top:5px}

/* right/wrong stacked bar */
.rw-bar{display:flex;height:22px;border-radius:6px;overflow:hidden;border:1px solid var(--rule)}
.rw-bar .seg{display:flex;align-items:center;justify-content:center;font-size:10.5px;font-weight:600;color:#08110a;font-family:"IBM Plex Mono",monospace}
.rw-bar .seg.right{background:var(--c-right)}
.rw-bar .seg.wrong{background:var(--c-wrong);color:#170703}
.rw-legend{display:flex;gap:16px;margin-top:9px;font-size:11.5px;color:var(--muted)}
.rw-legend span{display:inline-flex;align-items:center;gap:6px}
.rw-legend i{width:9px;height:9px;border-radius:2px;display:inline-block}

/* daily activity sparkline bars */
.spark{display:flex;align-items:flex-end;gap:2px;height:64px;padding-top:4px}
.spark b{flex:1;min-width:2px;background:var(--marigold-dim);border-radius:2px 2px 0 0}
.spark b.hi{background:var(--marigold)}
.spark-lab{display:flex;justify-content:space-between;font-size:10px;color:var(--muted-2);margin-top:6px}

.d-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid var(--rule-soft);font-size:13px}
.d-row:last-child{border-bottom:0}
.d-row .k{color:var(--muted)}
.d-row .v{font-family:"IBM Plex Mono",monospace}

.empty{padding:40px;text-align:center;color:var(--muted)}

/* test history table (inside profile) */
.hist-wrap{border:1px solid var(--rule);border-radius:12px;overflow:auto;max-height:420px}
.hist-wrap table{width:100%;border-collapse:collapse}
.hist-wrap th,.hist-wrap td{padding:8px 12px;text-align:right;border-bottom:1px solid var(--rule-soft);font-size:12.5px}
.hist-wrap th{position:sticky;top:0;background:var(--panel);color:var(--muted);font-weight:600;font-size:10.5px;
  letter-spacing:.04em;text-transform:uppercase;cursor:default;white-space:nowrap}
.hist-wrap th:first-child,.hist-wrap td:first-child{text-align:left}
.hist-wrap td{font-family:"IBM Plex Mono",monospace;white-space:nowrap}
.hist-wrap td.tname{font-family:Inter,sans-serif;white-space:normal;max-width:280px}
.hist-wrap tbody tr:last-child td{border-bottom:0}
.hist-wrap tbody tr:hover td{background:var(--panel-2)}
.hist-acc{display:inline-block;padding:2px 7px;border-radius:5px;font-size:11px;font-weight:600}
.hist-acc.good{background:rgba(0,149,131,.18);color:var(--c-right)}
.hist-acc.bad{background:rgba(217,71,31,.18);color:var(--c-wrong)}
.hist-note{font-size:11px;color:var(--muted-2);margin-top:8px}

/* ── chapter breakdown popup ─────────────────────────────── */
.modal-scrim{
  position:fixed;inset:0;z-index:50;background:rgba(5,9,16,.65);backdrop-filter:blur(2px);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;transition:opacity .18s ease;
}
.modal-scrim[hidden]{display:none}
.modal-scrim.open{opacity:1}
.modal{
  width:min(640px,100%);max-height:min(640px,86vh);overflow:hidden;display:flex;flex-direction:column;
  background:var(--panel-2);border:1px solid var(--rule);border-radius:14px;box-shadow:var(--shadow);
  padding:20px 22px 22px;transform:scale(.97);transition:transform .18s ease;
}
.modal-scrim.open .modal{transform:scale(1)}
.modal-head{display:flex;align-items:center;gap:12px}
.modal-title{display:flex;align-items:center;gap:9px;font-family:"Space Grotesk",sans-serif;font-size:16px;font-weight:600}
.modal-title .dot{width:9px;height:9px;border-radius:3px;flex:0 0 9px}
.modal-head .d-close{margin-left:auto;width:30px;height:30px;flex:0 0 30px;font-size:13px}
.modal-sub{color:var(--muted);font-size:12px;margin-top:5px}
.chap-wrap{margin-top:14px;max-height:460px}

@media (max-width:720px){
  header,.controls,.panel,footer{padding-left:18px;padding-right:18px}
  .profile-inner{padding:24px 16px 60px}
  .subjects{grid-template-columns:1fr}
  .modal{padding:16px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}