/* BeniBella LMS — identity: deep iris indigo + coral ember on warm paper.
   Structure borrowed from Canvas: fixed global rail, course left-nav, card dashboards. */
:root{
  --iris:#3B3486; --iris-d:#272253; --ink:#232135;
  --paper:#FAF9F6; --card:#FFFFFF; --line:#E4E1DA;
  --coral:#E2604C; --coral-d:#B94834;
  --leaf:#4F7A5B; --amber:#C98A1B; --muted:#6B6880;
  --r:12px; --shadow:0 1px 3px rgba(35,33,53,.08),0 8px 22px rgba(35,33,53,.06);
  --disp:'Bricolage Grotesque',system-ui,sans-serif; --body:'Inter',system-ui,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--body);background:var(--paper);color:var(--ink);font-size:14.5px;line-height:1.55}
.hidden{display:none!important}
h1,h2,h3{font-family:var(--disp);font-weight:700;color:var(--iris-d);line-height:1.15}
h1{font-size:25px;margin:0 0 6px} h2{font-size:19px;margin:20px 0 8px} h3{font-size:15.5px;margin:12px 0 6px}
a{color:var(--iris)}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px}
label{display:block;font-size:13px;font-weight:600;color:var(--iris-d);margin-bottom:10px}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:14px;margin-top:4px;background:#fff}
textarea{min-height:80px;resize:vertical}
.err{color:var(--coral-d);font-size:13px;margin-top:8px;min-height:16px}
.okmsg{color:var(--leaf);font-size:13px;margin-top:4px}
.help{font-size:12.5px;color:var(--muted);font-weight:400}

.btn{border:1px solid var(--line);background:#fff;color:var(--iris-d);border-radius:9px;padding:8px 14px;font-size:13.5px;font-weight:600;cursor:pointer}
.btn:hover{background:#F1EFEA}
.btn.primary{background:var(--iris);border-color:var(--iris);color:#fff}
.btn.primary:hover{background:var(--iris-d)}
.btn.coral{background:var(--coral);border-color:var(--coral-d);color:#fff}
.btn.coral:hover{background:var(--coral-d)}
.btn.danger{color:var(--coral-d);border-color:#EBC6BE}
.btn.wide{width:100%;padding:11px}
.btn.sm{padding:4px 9px;font-size:12.5px}

/* auth */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(1200px 700px at 20% -10%, #4B429E 0%, var(--iris-d) 55%, #1B1839 100%)}
.auth-card{background:var(--card);border-radius:18px;box-shadow:var(--shadow);padding:34px;max-width:430px;width:100%}
.brand-lg{font-family:var(--disp);font-size:30px;font-weight:700;color:var(--iris-d)}
.brand-lg span{color:var(--coral)}
.auth-sub{color:var(--muted);font-size:13.5px;margin:8px 0 18px}
.auth-tabs{display:flex;gap:6px;margin-bottom:14px}
.auth-tabs button{flex:1;padding:9px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;font-weight:600;color:var(--muted)}
.auth-tabs button.on{background:var(--iris);color:#fff;border-color:var(--iris)}

/* app shell: Canvas-style rail */
.app{display:grid;grid-template-columns:92px 1fr;min-height:100vh}
.rail{background:var(--iris-d);display:flex;flex-direction:column;align-items:stretch;padding:10px 8px;gap:4px;position:sticky;top:0;height:100vh}
.rail-brand{font-family:var(--disp);font-weight:700;color:#fff;background:var(--coral);border-radius:12px;
  width:46px;height:46px;display:flex;align-items:center;justify-content:center;font-size:18px;margin:4px auto 12px}
.rail-btn{background:transparent;border:none;color:#C9C4E4;border-radius:10px;padding:9px 4px;font-size:11px;font-weight:600;
  cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;font-family:var(--body)}
.rail-btn .ri{font-size:19px}
.rail-btn:hover{background:rgba(255,255,255,.08);color:#fff}
.rail-btn.on{background:var(--paper);color:var(--iris-d)}
.rail-spacer{flex:1}
main{padding:24px 30px;max-width:1280px;width:100%}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-top:14px}
.course-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;box-shadow:var(--shadow);transition:transform .12s}
.course-card:hover{transform:translateY(-2px)}
.cc-band{height:74px;position:relative}
.cc-band .cc-code{position:absolute;left:14px;bottom:10px;color:#fff;font-family:var(--disp);font-weight:700;font-size:16px;text-shadow:0 1px 3px rgba(0,0,0,.35)}
.cc-body{padding:12px 14px}
.cc-title{font-weight:700;color:var(--iris-d);font-size:14.5px}
.cc-meta{font-size:12px;color:var(--muted);margin-top:3px}
.pill{display:inline-block;border-radius:99px;padding:2px 9px;font-size:11px;font-weight:700}
.pill.ok{background:#E5EFE7;color:#2F5A3C}.pill.warn{background:#F7ECD6;color:#7C5A12}
.pill.late{background:#F8E2DC;color:#93331F}.pill.info{background:#E6E4F4;color:#3B3486}
.pill.pend{background:#F7ECD6;color:#7C5A12}.pill.susp{background:#F8E2DC;color:#93331F}

/* course page: Canvas-style course nav */
.course-shell{display:grid;grid-template-columns:185px 1fr;gap:22px}
.cnav{display:flex;flex-direction:column;gap:2px;position:sticky;top:20px;height:fit-content}
.cnav button{text-align:left;background:transparent;border:none;border-left:3px solid transparent;padding:9px 12px;
  font:inherit;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer;border-radius:0 8px 8px 0}
.cnav button:hover{background:#F1EFEA;color:var(--iris-d)}
.cnav button.on{color:var(--coral-d);border-left-color:var(--coral);background:#FBF3F1}
.course-head{border-radius:14px;padding:18px 20px;color:#fff;margin-bottom:18px}
.course-head h1{color:#fff;margin:0}
.course-head .help{color:rgba(255,255,255,.85)}

/* tables */
.tbl-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table{border-collapse:collapse;width:100%;font-size:13px}
th{background:var(--iris);color:#fff;text-align:left;padding:8px 11px;font-weight:600;white-space:nowrap;position:sticky;top:0}
td{border-top:1px solid var(--line);padding:8px 11px;vertical-align:top}
tr:nth-child(even) td{background:#FBFAF8}

/* modules accordion */
.mod{border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:10px;overflow:hidden}
.mod-head{display:flex;align-items:center;gap:10px;padding:12px 15px;background:#F4F2EC;font-weight:700;color:var(--iris-d)}
.mod-item{display:flex;align-items:center;gap:10px;padding:10px 15px;border-top:1px solid var(--line);font-size:13.5px}
.mod-item .mi-ico{width:24px;text-align:center}

/* assignment list */
.asg{display:flex;align-items:center;gap:14px;padding:13px 15px;border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:9px}
.asg .a-main{flex:1}
.asg .a-title{font-weight:700;color:var(--iris-d);cursor:pointer}
.asg .a-due{font-size:12px;color:var(--muted)}

/* toast + modal */
#toastHost{position:fixed;bottom:18px;right:18px;z-index:99;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--ink);color:#fff;padding:11px 16px;border-radius:10px;box-shadow:var(--shadow);font-size:13.5px;max-width:340px;animation:pop .2s}
.toast.ok{border-left:4px solid var(--leaf)} .toast.err{border-left:4px solid var(--coral)}
@keyframes pop{from{transform:translateY(8px);opacity:0}}
.modal-bg{position:fixed;inset:0;background:rgba(35,33,53,.55);z-index:80;display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:#fff;border-radius:16px;max-width:720px;width:100%;max-height:88vh;overflow:auto;padding:22px}
.modal h2{margin-top:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:12px 0}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px}
.kpi .n{font-family:var(--disp);font-size:25px;color:var(--iris)}
.kpi .l{font-size:12px;color:var(--muted)}

@media (max-width:900px){
  .app{grid-template-columns:1fr}
  .rail{flex-direction:row;height:auto;position:sticky;top:0;z-index:50;overflow-x:auto;padding:8px}
  .rail-brand{margin:0 8px 0 0;flex-shrink:0}
  .rail-btn{flex-direction:row;gap:6px;padding:8px 10px;font-size:12px;white-space:nowrap}
  .rail-spacer{display:none}
  main{padding:16px}
  .course-shell{grid-template-columns:1fr}
  .cnav{flex-direction:row;overflow-x:auto;position:static}
  .cnav button{border-left:none;border-bottom:3px solid transparent;border-radius:8px 8px 0 0;white-space:nowrap}
  .cnav button.on{border-bottom-color:var(--coral)}
  .grid2,.grid3{grid-template-columns:1fr}
}