:root{
  --ink:#14212b; --ink-soft:#4a5b68; --paper:#f1f4f5; --panel:#ffffff; --line:#d8dfe3;
  --accent:#0e6b63; --accent-strong:#0a4f49; --accent-tint:#e2f0ee;
  --warn:#9a6700; --warn-tint:#fbf1d9; --danger:#b3261e; --danger-tint:#fbe6e4; --ok:#1d7a46; --ok-tint:#e1f3e8;
  --radius:6px;
  --font:"Segoe UI","Nirmala UI","Noto Sans Devanagari",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.5}
a{color:var(--accent-strong)}
h1{font-size:1.5rem;margin:0 0 .25rem;font-weight:650;letter-spacing:-.01em}
h2{font-size:1.1rem;margin:0 0 .75rem;font-weight:650}
p{margin:0 0 .75rem}
.muted{color:var(--ink-soft)}
.small{font-size:.875rem}
:focus-visible{outline:3px solid #6bb8b0;outline-offset:2px}

/* app shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:236px;background:var(--ink);color:#dbe5ea;padding:1.25rem 0;flex-shrink:0;display:flex;flex-direction:column}
.brand{padding:0 1.25rem 1.25rem;border-bottom:1px solid #2a3a46;margin-bottom:.75rem}
.brand img{max-height:40px;max-width:180px;display:block;margin-bottom:.4rem}
.brand strong{display:block;font-size:1rem;color:#fff;line-height:1.3}
.nav a{display:block;padding:.6rem 1.25rem;color:#c3d0d8;text-decoration:none;border-left:3px solid transparent;font-size:.95rem}
.nav a:hover{background:#1c2d3a;color:#fff}
.nav a.active{background:#1c2d3a;color:#fff;border-left-color:#4fb3a9}
.nav .group{padding:1rem 1.25rem .3rem;font-size:.8rem;color:#8ea0ab}
.sidebar .me{margin-top:auto;padding:1rem 1.25rem 0;border-top:1px solid #2a3a46;font-size:.875rem}
.sidebar .me a{color:#c3d0d8}
.main{flex:1;min-width:0;padding:1.75rem 2rem 3rem}
.page{max-width:1100px}
.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1.25rem;flex-wrap:wrap}
.topbar{display:none}

/* components */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;margin-bottom:1.25rem}
.btn{display:inline-block;border:1px solid var(--accent);background:var(--accent);color:#fff;padding:.55rem 1rem;border-radius:var(--radius);font:inherit;font-size:.95rem;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--accent-strong)}
.btn.secondary{background:#fff;color:var(--accent-strong)}
.btn.secondary:hover{background:var(--accent-tint)}
.btn.danger{background:#fff;color:var(--danger);border-color:var(--danger)}
.btn.link{background:none;border:none;color:var(--accent-strong);padding:0;text-decoration:underline}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.alert{padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;border:1px solid}
.alert.ok{background:var(--ok-tint);border-color:#a9d9bd;color:#14502d}
.alert.err{background:var(--danger-tint);border-color:#f0b4af;color:#7d1a14}
.alert.warn{background:var(--warn-tint);border-color:#e8cf8d;color:#6b4900}
.badge{display:inline-block;padding:.1rem .55rem;border-radius:99px;font-size:.8rem;background:var(--accent-tint);color:var(--accent-strong)}
.badge.off{background:#e8ecee;color:#5d6b75}

label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.25rem}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=tel],input[type=file],select,textarea{
  width:100%;padding:.55rem .65rem;border:1px solid #b9c4cb;border-radius:var(--radius);font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:90px}
.field{margin-bottom:1rem}
.field .help{font-size:.82rem;color:var(--ink-soft);margin-top:.2rem}
.field .error{font-size:.85rem;color:var(--danger);margin-top:.2rem}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 1.25rem}
.check{display:flex;gap:.5rem;align-items:center;font-weight:400}
.check input{width:auto}
.actions{display:flex;gap:.75rem;align-items:center;margin-top:1.25rem;flex-wrap:wrap}

table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:.6rem .7rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:650;background:#f6f8f9;font-size:.85rem;color:var(--ink-soft)}
.table-wrap{overflow-x:auto}
code,.mono{font-family:ui-monospace,Consolas,monospace;font-size:.85rem}
pre.cmd{background:#0f1a22;color:#d6e6ee;padding:.8rem 1rem;border-radius:var(--radius);overflow-x:auto;font-size:.85rem;margin:.5rem 0 1rem}
.stat{display:flex;gap:1rem;flex-wrap:wrap}
.stat .card{flex:1;min-width:180px;margin-bottom:0}
.stat b{font-size:1.6rem;display:block}
.filters{display:flex;gap:.75rem;flex-wrap:wrap;align-items:flex-end;margin-bottom:1rem}
.filters .field{margin:0;min-width:160px}
.pager{display:flex;gap:1rem;align-items:center;justify-content:center;margin-top:1rem}

/* permission matrix */
.matrix .module{border-top:1px solid var(--line);padding:.8rem 0}
.matrix .module h3{font-size:.95rem;margin:0 0 .4rem}
.matrix .acts{display:flex;flex-wrap:wrap;gap:.4rem 1.4rem}

/* login + installer */
.auth{display:grid;grid-template-columns:minmax(300px,420px) 1fr;min-height:100vh}
.auth-form{padding:3rem 2.25rem;background:var(--panel);display:flex;flex-direction:column;justify-content:center}
.auth-form img{max-height:48px;max-width:200px;margin-bottom:1rem}
.journey{background:var(--ink);color:#d6e3ea;padding:3rem 3.5rem;display:flex;flex-direction:column;justify-content:center}
.journey h2{color:#fff;font-size:1.3rem;margin-bottom:1.5rem;max-width:22ch}
.journey ol{list-style:none;margin:0;padding:0 0 0 1.4rem;border-left:2px solid #35505f}
.journey li{position:relative;padding:.35rem 0 .9rem 1.1rem;font-size:1rem}
.journey li::before{content:"";position:absolute;left:-1.78rem;top:.62rem;width:.75rem;height:.75rem;border-radius:50%;background:var(--ink);border:2px solid #4fb3a9}
.journey li:last-child{padding-bottom:0}
.journey li span{display:block;font-size:.85rem;color:#8ea0ab}
.install{max-width:720px;margin:0 auto;padding:2rem 1.25rem 3rem}
.steps{display:flex;gap:.5rem;margin:1rem 0 1.5rem;flex-wrap:wrap}
.steps span{padding:.25rem .8rem;border-radius:99px;font-size:.85rem;background:#e3e9ec;color:#4a5b68}
.steps span.on{background:var(--accent);color:#fff}
.steps span.done{background:var(--accent-tint);color:var(--accent-strong)}
.checks{list-style:none;padding:0;margin:0}
.checks li{display:flex;gap:.6rem;padding:.45rem 0;border-bottom:1px solid var(--line);align-items:flex-start}
.checks .mark{flex:0 0 1.4rem;font-weight:700}
.checks .yes{color:var(--ok)} .checks .no{color:var(--danger)} .checks .opt{color:var(--warn)}
.checks small{display:block;color:var(--ink-soft)}

@media (max-width:860px){
  .shell{flex-direction:column}
  .sidebar{width:100%;padding:.5rem 0}
  .brand{display:none}
  .nav{display:flex;overflow-x:auto}
  .nav a{white-space:nowrap;border-left:none;border-bottom:3px solid transparent}
  .nav a.active{border-bottom-color:#4fb3a9}
  .nav .group{display:none}
  .sidebar .me{margin-top:0;border-top:none;padding:.4rem 1rem;display:flex;gap:1rem;flex-wrap:wrap}
  .main{padding:1.25rem 1rem 2.5rem}
  .grid2{grid-template-columns:1fr}
  .auth{grid-template-columns:1fr}
  .journey{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---- student portal (mobile first) ---- */
.pt{background:var(--paper);min-height:100vh;padding-bottom:4.5rem}
.pt-top{background:var(--ink);color:#fff;padding:.8rem 1rem;display:flex;justify-content:space-between;align-items:center;gap:.5rem;position:sticky;top:0;z-index:5}
.pt-top a{color:#c3d0d8;font-size:.9rem}
.pt-top strong{font-size:1.05rem}
.pt-wrap{max-width:720px;margin:0 auto;padding:1rem}
.pt-tabs{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);display:flex;z-index:6}
.pt-tabs a{flex:1;text-align:center;padding:.55rem .2rem;font-size:.78rem;color:var(--ink-soft);text-decoration:none;border-top:3px solid transparent;min-height:48px}
.pt-tabs a.active{color:var(--accent-strong);border-top-color:var(--accent);font-weight:600}
.pt-tabs .dot{display:inline-block;min-width:1.1rem;padding:0 .3rem;border-radius:99px;background:var(--danger);color:#fff;font-size:.7rem;margin-left:.15rem}
.pt .btn{min-height:44px}
.pt input,.pt select,.pt textarea{min-height:44px;font-size:1rem}
.track{list-style:none;margin:.5rem 0 0;padding:0 0 0 1.2rem;border-left:2px solid #cfd9de}
.track li{position:relative;padding:.25rem 0 .55rem 1rem;color:var(--ink-soft);font-size:.95rem}
.track li::before{content:"";position:absolute;left:-1.57rem;top:.55rem;width:.7rem;height:.7rem;border-radius:50%;background:#fff;border:2px solid #b9c4cb}
.track li.done{color:var(--ink)} .track li.done::before{background:var(--accent);border-color:var(--accent)}
.track li.now{color:var(--ink);font-weight:650} .track li.now::before{background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.pcard{background:#fff;border:1px solid var(--line);border-radius:10px;padding:1rem;margin-bottom:.9rem}
.pcard h2{font-size:1.05rem}
.chat{max-height:55vh;overflow:auto;margin-bottom:.75rem}
@media (min-width:861px){.pt-tabs{position:static;border:none;background:none;max-width:720px;margin:0 auto;padding:0 1rem}.pt{padding-bottom:2rem}}