/* StudentHub — registrar's ledger design system */
:root{
  --paper:#F3F4F0;
  --card:#FFFFFF;
  --ink:#14231C;
  --ink-2:#4A5A51;
  --green:#0E3B2E;
  --green-tint:#E4EEE7;
  --brass:#A97E22;
  --brass-tint:#F5EBD4;
  --red:#A63A28;
  --red-tint:#F6E3DE;
  --line:#DAE0D8;
  --r:14px;
  --mono:'Spline Sans Mono',monospace;
}
*{box-sizing:border-box;margin:0}
body{
  background:var(--paper);
  color:var(--ink);
  font:16px/1.55 'Manrope',sans-serif;
  min-height:100vh;
}
h1,h2,h3{font-family:'Instrument Serif',serif;font-weight:400;letter-spacing:.01em}
h1{font-size:2.1rem} h2{font-size:1.45rem}
h1 em,h2 em{font-style:italic;color:var(--brass)}
a{color:var(--green)}

/* ---------- shell ---------- */
.side{
  position:fixed;inset:0 auto 0 0;width:216px;padding:26px 18px;
  background:var(--green);color:#EAF1EC;display:flex;flex-direction:column;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  font-family:var(--mono);font-size:.8rem;background:var(--brass);color:#fff;
  padding:5px 8px;border-radius:6px;letter-spacing:.05em;
}
.brand-name{font-family:'Instrument Serif',serif;font-size:1.3rem}
.brand-name em{color:#E4C878}
.side nav{display:flex;flex-direction:column;gap:4px;flex:1}
.side nav a,.tabbar a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;
  color:#C7D6CC;text-decoration:none;font-weight:500;font-size:.95rem;
}
.side nav a.on{background:rgba(255,255,255,.11);color:#fff}
.side nav a:hover{color:#fff}
.ic{font-size:1.05rem;width:20px;text-align:center}
.side-out{color:#9DB3A5;font-size:.85rem;text-decoration:none}
.wrap{margin-left:216px;padding:34px 38px 90px;max-width:1180px}
.tabbar{display:none}

/* ---------- cards & tables ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;margin-bottom:20px}
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.stat .n{font-family:var(--mono);font-size:1.7rem;font-weight:600}
.stat .l{color:var(--ink-2);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-top:2px}
.stat.good .n{color:var(--green)} .stat.warn .n{color:var(--brass)} .stat.bad .n{color:var(--red)}

.ledger{width:100%;border-collapse:collapse;font-size:.94rem}
.ledger th{
  text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;
  color:var(--ink-2);font-weight:700;padding:8px 10px;border-bottom:2px solid var(--ink);
}
.ledger td{padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.ledger tr:hover td{background:#FAFBF8}
.num{font-family:var(--mono);text-align:right;white-space:nowrap}
th.num{text-align:right}

/* ink-stamp chips — the signature */
.stamp{
  display:inline-block;font-family:var(--mono);font-size:.68rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;padding:3px 9px;border-radius:4px;
  border:1.5px solid currentColor;transform:rotate(-1.2deg);
}
.stamp.paid{color:var(--green);background:var(--green-tint)}
.stamp.due{color:var(--red);background:var(--red-tint)}
.stamp.part{color:var(--brass);background:var(--brass-tint)}
.stamp.flat{transform:none}

/* ---------- forms & buttons ---------- */
label{display:block;font-size:.85rem;font-weight:500;color:var(--ink-2);margin-bottom:12px}
input,select,textarea{
  width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;
  font:inherit;background:#fff;color:var(--ink);
}
input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:2px solid var(--brass);outline-offset:1px}
.btn{
  display:inline-block;border:1px solid var(--green);background:#fff;color:var(--green);
  padding:9px 16px;border-radius:9px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;font-size:.92rem;
}
.btn.primary{background:var(--green);color:#fff}
.btn.brass{border-color:var(--brass);background:var(--brass);color:#fff}
.btn.ghost{border-color:var(--line);color:var(--ink-2)}
.btn.sm{padding:5px 10px;font-size:.82rem}
.btn.wide{width:100%}
.btn.danger{border-color:var(--red);color:var(--red)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}
.row>*{flex:1;min-width:150px}
.row .fit{flex:0 0 auto;min-width:0}
.bar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px;flex-wrap:wrap}

.flash{background:var(--green-tint);border:1px solid var(--green);color:var(--green);padding:11px 15px;border-radius:10px;margin-bottom:18px;font-weight:500}
.flash.err{background:var(--red-tint);border-color:var(--red);color:var(--red)}
.muted{color:var(--ink-2);font-size:.87rem}
.tag{font-family:var(--mono);font-size:.72rem;background:var(--paper);border:1px solid var(--line);padding:2px 8px;border-radius:5px}

/* deadline urgency */
.dl-soon{color:var(--red);font-weight:600}
.dl-ok{color:var(--ink-2)}

/* progress bar for fees */
.meter{height:7px;background:var(--paper);border-radius:5px;overflow:hidden;min-width:90px}
.meter i{display:block;height:100%;background:var(--green)}
.meter.low i{background:var(--red)}
.meter.mid i{background:var(--brass)}

/* ---------- login ---------- */
.login-body{display:grid;place-items:center;padding:20px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:38px 34px;width:100%;max-width:400px}
.login-rule{height:4px;background:linear-gradient(90deg,var(--green) 60%,var(--brass) 60%);border-radius:3px;margin-bottom:22px}
.login-card h1{font-size:2.3rem}
.login-sub{color:var(--ink-2);margin:4px 0 22px;font-size:.92rem}

/* ---------- dashboard chart ---------- */
.chart-wrap{position:relative;height:260px}

/* ---------- mobile ---------- */
@media (max-width:840px){
  .side{display:none}
  .wrap{margin:0;padding:18px 14px 96px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g2{grid-template-columns:1fr}
  .tabbar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:50;
    background:var(--green);padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tabbar a{flex:1;flex-direction:column;gap:2px;padding:6px 2px;font-size:.66rem;color:#B9CCBF;text-align:center}
  .tabbar a.on{color:#fff;background:rgba(255,255,255,.12)}
  .tabbar .ic{font-size:1.15rem;width:auto}
  .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .ledger{min-width:640px}
  h1{font-size:1.7rem}
}
@media (prefers-reduced-motion:no-preference){
  .card{animation:rise .28s ease both}
  @keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
}