/* ISTU Student Portal — brand theme.
   Derived from the ISTU crest: maroon #8B2B23, navy #17355D, ink #141414,
   deepened per direction ("based on our logo, a bit darker").
   All text/surface pairs contrast-checked ≥ 4.5:1. */

:root{
  --page:#ECE9E1; --surface:#FAF9F5; --ink:#141414; --ink-2:#4A4844; --ink-3:#837F78;
  --hairline:#D9D5CB; --ring:rgba(20,20,20,.12);
  --brand:#71201A; --brand-deep:#5A1915; --brand-soft:#E3C7C4; --brand-wash:#F1E6E5;
  --navy:#122A4B; --navy-deep:#0D2038; --navy-wash:#E3E9F2; --navy-soft:#B9C6DB;
  --topbar:#122A4B; --topbar-ink:#F3F1EA; --topbar-muted:rgba(243,241,234,.70);
  --good:#1E6B2E; --good-text:#1E6B2E; --good-wash:#E4EFE2;
  --warn:#8A5A00; --warn-wash:#F5ECD7; --warn-text:#8A5A00;
  --crit:#B03329; --crit-wash:#F5E3E0;
  --info:#2A4E80; --info-wash:#E3E9F2;
  --lock-wash:#E5E2D9;
}
@media (prefers-color-scheme: dark){
  :root{
    --page:#12161D; --surface:#1A2029; --ink:#F3F1EA; --ink-2:#C6C2B8; --ink-3:#8B877E;
    --hairline:#2C333E; --ring:rgba(255,255,255,.10);
    --brand:#D0796C; --brand-deep:#B34437; --brand-soft:#3A1D19; --brand-wash:#2A1714;
    --navy:#8FB0DE; --navy-deep:#6D8FBE; --navy-wash:#182739; --navy-soft:#2C405C;
    --topbar:#0D1117; --topbar-ink:#F3F1EA; --topbar-muted:rgba(243,241,234,.62);
    --good:#58B368; --good-text:#58B368; --good-wash:#16281A;
    --warn:#D9A03F; --warn-wash:#2E2410; --warn-text:#D9A03F;
    --crit:#E07A6E; --crit-wash:#331915;
    --info:#8FB0DE; --info-wash:#182739;
    --lock-wash:#232A34;
  }
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  background:var(--page); color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:14.5px; line-height:1.55; -webkit-font-smoothing:antialiased;
}
.shell{max-width:1060px;margin:0 auto;padding:0 28px 80px}

/* ---------- branded topbar band ---------- */
.topbar-band{background:var(--topbar);border-bottom:3px solid var(--brand-deep);margin-bottom:34px}
@media (prefers-color-scheme: dark){ .topbar-band{border-bottom-color:var(--brand-soft)} }
.topbar{display:flex;align-items:center;gap:20px;padding:12px 28px;max-width:1060px;margin:0 auto;flex-wrap:wrap}
.wordmark{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--topbar-ink)}
.wordmark img{height:44px;width:auto;display:block}
.brand-name{font-family:"Times New Roman",Georgia,serif;font-weight:700;font-size:19px;letter-spacing:2.5px;line-height:1.1}
.brand-sub{display:block;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;font-size:10.5px;font-weight:500;letter-spacing:1.6px;text-transform:uppercase;color:var(--topbar-muted);margin-top:2px}
nav.tabs{display:flex;gap:6px;margin-left:18px}
nav.tabs a{color:var(--topbar-muted);font-weight:530;padding:8px 15px;border-radius:9px;text-decoration:none}
nav.tabs a:hover{background:rgba(255,255,255,.08);color:var(--topbar-ink)}
nav.tabs a.active{background:var(--page);color:var(--ink);font-weight:640}
.top-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.who{display:flex;align-items:center;gap:10px;color:var(--topbar-muted);font-size:13px}
.avatar{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.12);color:var(--topbar-ink);display:inline-flex;align-items:center;justify-content:center;font-weight:650;font-size:12.5px;border:1px solid rgba(255,255,255,.18);overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover}
.topbar .btn.ghost{border-color:rgba(255,255,255,.25);color:var(--topbar-ink);background:transparent}
.topbar .btn.ghost:hover{background:rgba(255,255,255,.10)}
.topbar .badge{background:rgba(255,255,255,.10);color:var(--topbar-ink)}
.topbar .badge.active{background:rgba(88,179,104,.22);color:#CDEBD3}
.topbar .badge.inactive{background:rgba(224,122,110,.22);color:#F3CFC9}
.topbar .badge.frozen{background:rgba(143,176,222,.22);color:#CFDEF3}
.topbar .badge.graduate{background:rgba(255,255,255,.16);color:var(--topbar-ink)}

/* ---------- shared ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 11px;border-radius:999px;white-space:nowrap}
.badge.active,.badge.good{background:var(--good-wash);color:var(--good-text)}
.badge.plan,.badge.info,.badge.frozen{background:var(--info-wash);color:var(--info)}
.badge.graduate{background:var(--navy-wash);color:var(--info)}
.badge.upcoming,.badge.warn{background:var(--warn-wash);color:var(--warn-text)}
.badge.locked,.badge.muted{background:var(--lock-wash);color:var(--ink-2)}
.badge.danger,.badge.inactive,.badge.overdue{background:var(--crit-wash);color:var(--crit)}

.card{background:var(--surface);border:1px solid var(--ring);border-radius:16px;padding:26px 28px;box-shadow:0 1px 3px rgba(20,20,20,.05)}
.card + .card{margin-top:18px}
h1{font-size:21px;font-weight:650;letter-spacing:-.2px}
h2{font-size:15.5px;font-weight:640}
.sub{color:var(--ink-2);font-size:13px}
.muted{color:var(--ink-3)}
.hair{border:0;border-top:1px solid var(--hairline);margin:18px 0}
a.plain{color:var(--brand);text-decoration:none;font-weight:560}
a.plain:hover{text-decoration:underline}

.btn{appearance:none;font:inherit;font-weight:600;border-radius:10px;padding:9px 16px;cursor:pointer;border:1px solid transparent;text-decoration:none;display:inline-block}
.btn.primary{background:var(--brand);color:#fff}
@media (prefers-color-scheme: dark){ .btn.primary{background:var(--brand-deep)} }
.btn.primary:hover{filter:brightness(1.12)}
.btn.ghost{background:transparent;border-color:var(--hairline);color:var(--ink)}
.btn.ghost:hover{background:var(--lock-wash)}
.btn.mini{padding:5px 10px;font-size:12.5px;border-radius:8px}

/* flash banners */
.banner{border-radius:12px;padding:13px 16px;margin-bottom:18px;font-size:13.5px;font-weight:530}
.banner.success{background:var(--good-wash);color:var(--good-text)}
.banner.error{background:var(--crit-wash);color:var(--crit)}

/* forms */
label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:5px}
input[type=text],input[type=email],input[type=number],input[type=file],select,textarea{
  width:100%;font:inherit;color:var(--ink);background:var(--surface);
  border:1px solid var(--hairline);border-radius:10px;padding:9px 12px;margin-bottom:14px;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--navy);outline-offset:1px}
@media (prefers-color-scheme: dark){ input:focus,select:focus,textarea:focus{outline-color:var(--navy-deep)} }
textarea{min-height:90px;resize:vertical}
.field-error{color:var(--crit);font-size:12.5px;margin:-10px 0 12px}

/* stat tiles */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:18px}
.stat{background:var(--surface);border:1px solid var(--ring);border-left:4px solid var(--brand);border-radius:16px;padding:20px 22px}
@media (prefers-color-scheme: dark){ .stat{border-left-color:var(--brand-deep)} }
.stat .label{font-size:12.5px;color:var(--ink-2);font-weight:550}
.stat .value{font-size:30px;font-weight:650;letter-spacing:-.4px;margin-top:6px;line-height:1.15}
.stat .foot{font-size:12.5px;color:var(--ink-3);margin-top:5px}

/* profile */
.id-card{display:flex;gap:24px;align-items:flex-start}
.photo{width:92px;height:92px;border-radius:20px;background:var(--navy-wash);color:var(--info);display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:650;border:1px solid var(--ring);flex:none;overflow:hidden}
.photo img{width:100%;height:100%;object-fit:cover}
.id-main{flex:1;min-width:0}
.id-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.kv-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px 28px;margin-top:6px}
.kv .k{font-size:11.5px;color:var(--ink-3);letter-spacing:.25px;text-transform:uppercase;font-weight:600}
.kv .v{font-size:14px;color:var(--ink);margin-top:2px;font-weight:480}
.progress-line{display:flex;align-items:center;gap:14px;margin-top:16px;flex-wrap:wrap}
.semdots{display:flex;gap:5px}
.semdots i{width:22px;height:6px;border-radius:4px;background:var(--brand-soft)}
.semdots i.done{background:var(--brand)}
@media (prefers-color-scheme: dark){ .semdots i.done{background:var(--brand-deep)} }
.readonly-note{display:flex;align-items:center;gap:8px;color:var(--ink-3);font-size:12.5px;margin-top:20px;flex-wrap:wrap}

table{width:100%;border-collapse:collapse;font-size:13.5px}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.3px;color:var(--ink-3);font-weight:600;text-align:left;padding:8px 10px;border-bottom:1px solid var(--hairline)}
td{padding:11px 10px;border-bottom:1px solid var(--hairline);vertical-align:middle}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}

/* finance */
.term-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.term-head .dates{color:var(--ink-3);font-size:12.5px;margin-left:auto}
.charge-row{display:flex;align-items:center;gap:14px;padding:13px 2px;border-bottom:1px solid var(--hairline);flex-wrap:wrap}
.charge-row:last-child{border-bottom:0}
.charge-row .name{font-weight:560;min-width:170px}
.charge-row .due{color:var(--ink-2);font-size:12.5px}
.charge-row .amt{margin-left:auto;font-weight:600;font-variant-numeric:tabular-nums}
.meter{height:8px;border-radius:6px;background:var(--brand-soft);overflow:hidden;flex:1;min-width:120px}
.meter > i{display:block;height:100%;background:var(--brand);border-radius:6px}
@media (prefers-color-scheme: dark){ .meter > i{background:var(--brand-deep)} .meter{background:var(--brand-wash)} }
.plan-box{border:1px solid var(--hairline);border-radius:14px;padding:18px 20px;margin-top:16px;background:var(--page)}
.plan-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:4px}
.plan-remaining{margin-left:auto;text-align:right}
.plan-remaining .n{font-size:19px;font-weight:650;letter-spacing:-.2px}
.plan-remaining .l{font-size:11.5px;color:var(--ink-3)}
.inst{display:flex;align-items:center;gap:12px;padding:10px 2px;border-bottom:1px solid var(--hairline);font-size:13.5px;flex-wrap:wrap}
.inst:last-child{border-bottom:0}
.inst .seq{width:24px;height:24px;border-radius:50%;border:1.5px solid var(--hairline);color:var(--ink-3);display:inline-flex;align-items:center;justify-content:center;font-size:11.5px;font-weight:650;flex:none}
.inst.paid .seq{background:var(--good-wash);border-color:transparent;color:var(--good-text)}
.inst.overdue .seq{background:var(--crit-wash);border-color:transparent;color:var(--crit)}
.inst .when{color:var(--ink-2);font-size:12.5px}
.inst .amt{margin-left:auto;font-weight:600;font-variant-numeric:tabular-nums}
.encourage{margin-top:14px;font-size:12.5px;color:var(--good-text)}
.locknote{display:flex;gap:9px;align-items:flex-start;background:var(--lock-wash);border-radius:12px;padding:13px 16px;margin-top:16px;font-size:13px;color:var(--ink-2)}
.help-strip{display:flex;gap:16px;align-items:center;background:var(--navy-wash);border:1px solid var(--ring);border-left:4px solid var(--navy);border-radius:16px;padding:18px 22px;margin-top:18px;flex-wrap:wrap}
@media (prefers-color-scheme: dark){ .help-strip{border-left-color:var(--navy-soft)} }
.help-strip .t{font-weight:620}
.help-strip .d{font-size:12.5px;color:var(--ink-2)}
details.archive{background:var(--surface);border:1px solid var(--ring);border-radius:16px;margin-top:18px}
details.archive summary{list-style:none;cursor:pointer;padding:20px 28px;display:flex;align-items:center;gap:10px;font-weight:620}
details.archive summary::-webkit-details-marker{display:none}
details.archive .body{padding:0 28px 24px}
details.inline-form{margin-top:12px}
details.inline-form summary{cursor:pointer;color:var(--brand);font-weight:560;font-size:13px;list-style:none}
details.inline-form summary::-webkit-details-marker{display:none}
details.inline-form .form-body{margin-top:14px;border:1px solid var(--hairline);border-radius:12px;padding:16px}
.fineprint{color:var(--ink-3);font-size:12px;margin-top:22px;text-align:center}

/* login + checkout */
.login-wrap{min-height:88vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:var(--surface);border:1px solid var(--ring);border-top:4px solid var(--brand);border-radius:20px;padding:40px;max-width:420px;width:100%;text-align:center}
.login-card img.crest{height:88px;width:auto;margin-bottom:16px}
.login-card h1{font-family:"Times New Roman",Georgia,serif;letter-spacing:1px}
.ms-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:12px;border-radius:11px;background:var(--navy);color:#fff;font-weight:600;text-decoration:none;margin-top:22px}
@media (prefers-color-scheme: dark){ .ms-btn{background:var(--navy-soft);color:var(--ink)} }
.ms-btn:hover{filter:brightness(1.12)}
.divider{display:flex;align-items:center;gap:10px;color:var(--ink-3);font-size:12px;margin:22px 0 14px}
.divider::before,.divider::after{content:"";flex:1;border-top:1px solid var(--hairline)}

@media (max-width:760px){
  .stat-row{grid-template-columns:1fr}
  .id-card{flex-direction:column}
  .shell{padding:0 16px 60px}
  .topbar{padding:12px 16px}
  .term-head .dates{margin-left:0}
}