/* ===========================================================
   Kochikantha Bidyaniketon & College — School Management System
   Design tokens
   =========================================================== */
:root{
  --ink: #0B3D24;         /* sidebar / headings — deep brand green */
  --cobalt: #00A651;      /* primary action — brand green */
  --cobalt-light: #1DBD68;
  --marigold: #ED1C24;    /* accent / highlight — brand red */
  --paper: #F5FAF6;       /* page background */
  --surface: #FFFFFF;     /* cards */
  --slate: #22271F;       /* body text */
  --muted: #6B7280;       /* secondary text */
  --teal: #0F8C43;        /* success / paid — secondary green */
  --coral: #C81E2F;       /* danger / due — deep red */
  --gold: #E6B92E;        /* sparing highlight, echoes the seal's star */
  --border: #E3EDE6;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(11,61,36,0.08);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, Segoe UI, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--slate);
  font-size:15px;
  line-height:1.5;
}
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family: var(--font-display); color: var(--ink); margin:0 0 4px; }
::selection{ background: var(--marigold); color:#14213D; }

/* Focus visibility for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline: 2px solid var(--cobalt-light);
  outline-offset: 2px;
}

/* ===================== App shell ===================== */
.app{ display:flex; min-height:100vh; }

/* ---- Sidebar ---- */
.sidebar{
  width:260px; flex-shrink:0;
  background: var(--ink);
  color:#BFE0CD;
  padding:22px 16px;
  position:fixed; top:0; bottom:0; left:0;
  overflow-y:auto;
  transition: transform .25s ease;
  z-index:40;
}
.sidebar .brand{
  display:flex; align-items:center; gap:10px;
  padding:0 8px 22px; margin-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.sidebar .brand .mark{
  width:40px;height:40px;border-radius:50%;
  background:#fff; padding:3px;
  display:flex;align-items:center;justify-content:center; flex-shrink:0;
  box-shadow:0 0 0 2px rgba(255,255,255,.15);
}
.sidebar .brand .mark img{ width:100%; height:100%; object-fit:contain; border-radius:50%; }
.sidebar .brand strong{ font-family:var(--font-display); color:#fff; font-size:14.5px; display:block; line-height:1.25; }
.sidebar .brand span{ font-size:10.5px; color:#9FCDB2; }

.nav-group{ margin-bottom:2px; }
.nav-group-pinned .nav-links{ max-height:none; }

.group-toggle{
  width:100%; display:flex; align-items:center; justify-content:space-between;
  background:none; border:none; box-shadow:none; appearance:none; -webkit-appearance:none;
  cursor:pointer; padding:12px 10px 8px; margin:0; border-radius:0;
  font-family:var(--font-body); text-align:left;
}
.group-toggle .label{ font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:#5E9A78; }
.group-toggle .chev{ font-size:10px; color:#5E9A78; transition:transform .2s ease; }
.group-toggle:hover .label, .group-toggle:hover .chev{ color:#9FCDB2; }
.nav-group.open .group-toggle .chev{ transform:rotate(180deg); }

.nav-links{
  max-height:0; overflow:hidden;
  transition:max-height .28s ease;
}
.nav-group.open .nav-links{ max-height:800px; }

/* If a nav item inside a collapsed group is somehow active, keep it reachable via keyboard/no-JS */
.nav-links:focus-within{ max-height:800px; }

.nav-link{
  display:flex; align-items:center; gap:11px;
  padding:9px 10px; border-radius:8px; font-size:13.5px; color:#BFE0CD;
  margin-bottom:2px; transition: background .15s ease, color .15s ease, padding-left .15s ease;
}
.nav-link:hover{ padding-left:14px; }
.nav-link .ic{ width:18px; text-align:center; font-size:14px; }
.nav-link:hover{ background:rgba(255,255,255,.06); color:#fff; }
.nav-link.active{ background: var(--cobalt); color:#fff; font-weight:600; }

/* ---- Topbar ---- */
.main{ margin-left:260px; flex:1; min-width:0; display:flex; flex-direction:column; }
.topbar{
  height:68px; background:var(--surface); border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 24px; position:sticky; top:0; z-index:30;
  box-shadow:0 1px 3px rgba(0,0,0,.03);
}
.topbar .search{
  display:flex; align-items:center; gap:8px;
  background:var(--paper); border:1px solid var(--border); border-radius:999px;
  padding:8px 16px; width:320px; color:var(--muted); font-size:13.5px;
}
.topbar .search input{ border:none; background:transparent; outline:none; width:100%; font-family:var(--font-body); font-size:13.5px; }
.topbar .right{ display:flex; align-items:center; gap:18px; }
.topbar .menu-toggle{ display:none; background:none; border:none; font-size:20px; color:var(--ink); cursor:pointer; }
.avatar{
  width:36px;height:36px;border-radius:50%;
  background: var(--cobalt); color:#fff; display:flex;align-items:center;justify-content:center;
  font-weight:700; font-size:14px; font-family:var(--font-display);
}
.profile{ display:flex; align-items:center; gap:10px; }
.profile .who{ line-height:1.2; }
.profile .who strong{ display:block; font-size:13px; color:var(--ink); }
.profile .who span{ font-size:11.5px; color:var(--muted); }

.content{ padding:26px 28px 60px; }

/* ===================== Cards / widgets ===================== */
.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  box-shadow: var(--shadow); padding:20px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.stat-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:22px; }
.stat{
  background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow);
  padding:18px 20px; border-left:4px solid var(--cobalt);
  display:flex; flex-direction:column; gap:6px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.stat:hover{ box-shadow:0 8px 20px rgba(11,61,36,0.12); transform:translateY(-2px); }
.stat.c-marigold{ border-left-color:var(--marigold); }
.stat.c-teal{ border-left-color:var(--teal); }
.stat.c-coral{ border-left-color:var(--coral); }
.stat .top{ display:flex; justify-content:space-between; align-items:flex-start; }
.stat .icon{ font-size:18px; opacity:.55; }
.stat .value{ font-family:var(--font-display); font-size:30px; color:var(--ink); font-weight:600; }
.stat .label{ font-size:12.5px; color:var(--muted); }

.section-title{ display:flex; align-items:center; justify-content:space-between; margin:28px 0 14px; }
.section-title h3{ font-size:16px; }
.section-title a{ font-size:12.5px; color:var(--cobalt); font-weight:600; }

/* Signature element: Roll-Call Pulse (weekly attendance strip) */
.pulse-card{ display:flex; align-items:center; gap:22px; }
.pulse-meta{ min-width:170px; }
.pulse-meta .big{ font-family:var(--font-display); font-size:26px; color:var(--ink); }
.pulse-strip{ display:flex; align-items:flex-end; gap:10px; flex:1; height:74px; }
.pulse-bar{ flex:1; display:flex; flex-direction:column; align-items:center; gap:6px; height:100%; justify-content:flex-end; }
.pulse-bar .bar{ width:100%; max-width:26px; border-radius:5px 5px 3px 3px; background:var(--cobalt-light); }
.pulse-bar .day{ font-size:10.5px; color:var(--muted); font-family:var(--font-mono); }
.pulse-bar.today .bar{ background: var(--marigold); }

.module-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.module-tile{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:16px; display:flex; align-items:center; gap:12px; box-shadow:var(--shadow);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.module-tile:hover{ transform:translateY(-2px); box-shadow:0 8px 18px rgba(0,0,0,.08); border-color:var(--cobalt-light); }
.module-tile .ic{
  width:40px;height:40px;border-radius:10px;background:#EEF1FB;color:var(--cobalt);
  display:flex;align-items:center;justify-content:center;font-size:17px; flex-shrink:0;
}
.module-tile .txt strong{ display:block; font-size:13.3px; color:var(--ink); }
.module-tile .txt span{ font-size:11.3px; color:var(--muted); }
.module-tile.soon{ opacity:.62; }
.module-tile.soon .txt span{ color:var(--coral); font-weight:600; }

/* ===================== Dashboard: two-column command center layout ===================== */
.dash-grid{ display:grid; grid-template-columns:1fr 340px; gap:20px; align-items:start; }
.dash-main{ min-width:0; }
.dash-side{ display:flex; flex-direction:column; gap:18px; }

.panel{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); padding:18px; }
.panel-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:12px; }
.panel-head h4{ font-family:var(--font-display); font-size:14.5px; color:var(--ink); margin:0; }
.panel-head a{ font-size:12px; color:var(--cobalt); font-weight:600; }

.attn-list{ display:flex; flex-direction:column; gap:2px; }
.attn-item{
  display:flex; align-items:center; gap:11px; padding:10px 6px; border-radius:8px;
  border-bottom:1px solid var(--border);
}
.attn-item:last-child{ border-bottom:none; }
.attn-item:hover{ background:var(--paper); }
.attn-item .ic{
  width:32px;height:32px;border-radius:8px;background:#FDEAE4;color:var(--coral);
  display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;
}
.attn-item.ok .ic{ background:#E4F6F2; color:var(--teal); }
.attn-item .txt{ flex:1; min-width:0; }
.attn-item .txt strong{ display:block; font-size:12.8px; color:var(--ink); }
.attn-item .txt span{ font-size:11px; color:var(--muted); }
.attn-item .count{ font-family:var(--font-display); font-size:16px; color:var(--ink); font-weight:600; }
.attn-empty{ text-align:center; color:var(--muted); font-size:12.5px; padding:18px 8px; }

.mini-list{ display:flex; flex-direction:column; gap:0; }
.mini-item{ display:block; padding:9px 6px; border-bottom:1px solid var(--border); }
.mini-item:last-child{ border-bottom:none; }
.mini-item .mini-date{ font-size:10.5px; color:var(--cobalt); font-weight:700; text-transform:uppercase; letter-spacing:.03em; }
.mini-item .mini-title{ font-size:12.8px; color:var(--ink); margin-top:2px; }
.mini-empty{ text-align:center; color:var(--muted); font-size:12.5px; padding:14px 8px; }

.qa-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
.qa-tile{
  display:flex; flex-direction:column; align-items:center; gap:6px; text-align:center;
  padding:14px 6px; border-radius:10px; border:1px solid var(--border); background:var(--surface);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
}
.qa-tile:hover{ border-color:var(--cobalt-light); background:var(--paper); transform:translateY(-2px); box-shadow:0 6px 14px rgba(0,0,0,.08); }
.qa-tile .ic{ font-size:19px; }
.qa-tile span{ font-size:11px; color:var(--ink); font-weight:600; line-height:1.25; }

@media (max-width: 980px){
  .dash-grid{ grid-template-columns:1fr; }
  .qa-grid{ grid-template-columns:repeat(3,1fr); }
}

/* ===================== Tables ===================== */
.table-wrap{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); overflow:auto; }
table{ width:100%; border-collapse:collapse; font-size:13.5px; }
thead th{
  text-align:left; font-size:11px; letter-spacing:.05em; text-transform:uppercase;
  color:var(--muted); padding:13px 16px; border-bottom:1px solid var(--border); background:#FBFBFD;
}
tbody td{ padding:12px 16px; border-bottom:1px solid var(--border); vertical-align:middle; }
tbody tr:last-child td{ border-bottom:none; }
tbody tr{ transition:background .12s ease; }
tbody tr:hover{ background:#FAFBFF; }
.mono{ font-family:var(--font-mono); font-size:12.5px; color:var(--muted); }

.badge{ display:inline-flex; align-items:center; gap:5px; padding:4px 10px; border-radius:999px; font-size:11.5px; font-weight:600; }
.badge.green{ background:#E4F6F2; color:var(--teal); }
.badge.red{ background:#FDEAE4; color:var(--coral); }
.badge.amber{ background:#FDF1DD; color:#B9791E; }
.badge.blue{ background:#E9EDFA; color:var(--cobalt); }

/* ===================== Forms / buttons ===================== */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field{ display:flex; flex-direction:column; gap:6px; margin-bottom:14px; }
.field.full{ grid-column:1 / -1; }
.field label{ font-size:12.5px; font-weight:600; color:var(--ink); }
.field input, .field select, .field textarea{
  font-family:var(--font-body); font-size:13.5px; padding:10px 12px;
  border:1px solid var(--border); border-radius:8px; background:var(--paper); color:var(--slate);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--cobalt-light); background:#fff; }

.btn{
  display:inline-flex; align-items:center; gap:8px; justify-content:center;
  padding:10px 18px; border-radius:8px; font-size:13.5px; font-weight:600;
  border:1px solid transparent; cursor:pointer; font-family:var(--font-body);
  transition: background .15s ease, color .15s ease, border-color .15s ease, box-shadow .15s ease, transform .1s ease;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--cobalt); color:#fff; box-shadow:0 1px 2px rgba(0,0,0,.08); }
.btn-primary:hover{ background:var(--cobalt-light); box-shadow:0 4px 10px rgba(0,0,0,.12); }
.btn-outline{ background:#fff; border-color:var(--border); color:var(--ink); }
.btn-outline:hover{ border-color:var(--cobalt); color:var(--cobalt); }
.btn-danger{ background:#fff; border-color:var(--coral); color:var(--coral); }
.btn-danger:hover{ background:var(--coral); color:#fff; }
.btn-sm{ padding:6px 12px; font-size:12px; }

.alert{ padding:12px 16px; border-radius:8px; font-size:13.5px; margin-bottom:16px; }
.alert-success{ background:#E4F6F2; color:#1C7A68; border:1px solid #BEEAE0; }
.alert-error{ background:#FDEAE4; color:#B23F1C; border:1px solid #F6C6B4; }

/* ===================== Login page ===================== */
.auth-wrap{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background: radial-gradient(circle at 20% 20%, #124A2E 0%, var(--ink) 60%);
  padding:20px;
}
.auth-card{
  background:var(--surface); width:100%; max-width:380px; border-radius:16px;
  padding:34px 32px; box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.auth-card .mark{
  width:56px;height:56px;border-radius:50%;background:#fff;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:14px; box-shadow:0 0 0 1px var(--border);
}
.auth-card .mark img{ width:100%; height:100%; object-fit:contain; border-radius:50%; }
.auth-card h1{ font-size:22px; margin-bottom:2px; }
.auth-card p.sub{ color:var(--muted); font-size:13px; margin-bottom:22px; }
.auth-card .btn{ width:100%; margin-top:6px; }

/* ===================== Responsive ===================== */
@media (max-width: 980px){
  .stat-grid{ grid-template-columns:repeat(2,1fr); }
  .module-grid{ grid-template-columns:repeat(2,1fr); }
  .form-grid{ grid-template-columns:1fr; }
}
@media (max-width: 760px){
  .sidebar{ transform:translateX(-100%); }
  .sidebar.open{ transform:translateX(0); }
  .main{ margin-left:0; }
  .topbar .search{ display:none; }
  .topbar .menu-toggle{ display:block; }
  .pulse-card{ flex-direction:column; align-items:stretch; }
}
@media (prefers-reduced-motion: reduce){
  .sidebar{ transition:none; }
}