:root {
  --bg: #fbf6ec;          /* cream page */
  --panel: #ffffff;       /* cards */
  --soft: #fffaf0;        /* inner boxes */
  --head: #f6ecd6;        /* table header */
  --ink: #1b2a41;         /* navy text */
  --muted: #6b7280;
  --line: #eadfca;        /* warm borders */
  --field: #fffdf8;
  --field-line: #e2d6bd;
  --accent: #f59e0b;
  --accent-dark: #b45309;
  --gold-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #b45309 100%);
  --gold-glow: rgba(245,158,11,.35);
  --shadow: 0 4px 14px rgba(27,42,65,.08);
  --ok: #10b981;
  --bad: #ef4444;
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:15px/1.5 "Segoe UI",system-ui,-apple-system,Roboto,sans-serif;color:var(--ink);
  background:radial-gradient(1100px 600px at 85% -10%,rgba(245,158,11,.14),transparent 60%),var(--bg);background-attachment:fixed}
h1,h2,h3,h4{font-family:Georgia,"Times New Roman",serif;font-weight:700;margin:0;letter-spacing:-.01em}
h1{font-size:28px}h2{font-size:22px}h3{font-size:17px}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.muted{color:var(--muted)}.small{font-size:13px}
[hidden]{display:none!important}

/* ---------- login ---------- */
.auth{display:grid;grid-template-columns:minmax(300px,5fr) 6fr;min-height:100vh;min-height:100dvh}
.auth-side{background:linear-gradient(135deg,#1E4B8A,#2F6DB5);color:#fff;display:flex;flex-direction:column;justify-content:space-between;padding:44px;position:relative;overflow:hidden}
.auth-side::after{content:'';position:absolute;bottom:-80px;right:-80px;width:250px;height:250px;background:rgba(245,158,11,.25);border-radius:50%;pointer-events:none}
.auth-side img{width:150px;border-radius:22px;box-shadow:0 12px 40px rgba(0,0,0,.25);border:2px solid rgba(255,255,255,.5)}
.auth-side h1{font-size:40px;line-height:1.1;margin:28px 0 12px;color:#fff}
.auth-side p{color:#fff;max-width:36ch;margin:0;font-weight:500}
.auth-side .credits{line-height:1.7;font-weight:500;color:#fff}
.auth-side .name{text-transform:uppercase;font-weight:700;letter-spacing:2px;color:#fde68a}
.auth-main{display:flex;align-items:center;justify-content:center;padding:32px;background:transparent}
.auth-card{width:100%;max-width:400px;background:var(--panel);padding:36px;border-radius:20px;border:1px solid var(--line);box-shadow:0 20px 40px rgba(27,42,65,.10)}
.auth-card h2{margin-bottom:6px;color:var(--ink)}
.auth-card p{color:var(--muted)}
.auth-card form{margin-top:22px}

label{display:block;font-weight:600;font-size:13px;margin:16px 0 6px;color:#334155}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--field-line);border-radius:10px;font:inherit;background:var(--field);color:var(--ink);transition:all .2s ease}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--gold-glow);outline:none}
input:-webkit-autofill,input:-webkit-autofill:hover,input:-webkit-autofill:focus,select:-webkit-autofill{
  -webkit-text-fill-color:var(--ink);box-shadow:0 0 0 1000px var(--field) inset;caret-color:var(--ink);transition:background-color 9999s ease-in-out 0s}
.otp{letter-spacing:.5em;font-size:22px;text-align:center;font-variant-numeric:tabular-nums}

.btn{display:inline-block;padding:12px 20px;border:0;border-radius:10px;background:var(--gold-gradient);color:#1b150c;font:inherit;font-weight:700;cursor:pointer;transition:all .25s ease;box-shadow:0 4px 15px rgba(245,158,11,.3)}
.btn:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:wait;transform:none;box-shadow:none}
.btn.full{width:100%;margin-top:22px}
.btn.ghost{background:transparent;color:var(--accent-dark);border:1px solid rgba(180,83,9,.35);box-shadow:none}
.btn.ghost:hover{background:rgba(245,158,11,.1);transform:none}
.btn.danger{background:var(--bad);color:#fff;box-shadow:0 4px 12px rgba(239,68,68,.2)}
.btn.danger:hover{background:#dc2626}
.btn.sm{padding:6px 12px;font-size:13px}
.linkbtn{background:none;border:0;color:var(--accent-dark);text-decoration:underline;cursor:pointer;font:inherit;padding:0}
.error{color:var(--bad);font-size:13px;min-height:18px;margin-top:12px}
.row{display:flex;gap:16px;justify-content:space-between;margin-top:18px;flex-wrap:wrap}

/* ---------- app shell ---------- */
.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh;min-height:100dvh}
.sidebar{background:linear-gradient(180deg,#C2410C,#9A3412);color:#fff;padding:24px 16px;display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh;height:100dvh;overflow:hidden;box-shadow:4px 0 20px rgba(0,0,0,.1)}
.brand{display:flex;align-items:center;gap:12px;padding:0 8px 22px;font-family:Georgia,serif;font-size:20px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.25);margin-bottom:10px;color:#fff}
.brand img{width:40px;height:40px;border-radius:10px;box-shadow:0 4px 10px rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.4)}
.sidebar .nav{flex:1;min-height:0;overflow-y:auto;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.35) transparent}
.nav button{display:block;width:100%;text-align:left;padding:11px 14px;background:none;border:0;color:#fff;font:inherit;font-weight:600;border-radius:10px;cursor:pointer;transition:all .2s ease;margin-bottom:2px}
.nav button:hover{background:rgba(255,255,255,.18);transform:translateX(3px)}
.nav button.on{background:#fff;color:#9A3412;font-weight:700;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.sidebar .who{flex:none;padding:14px 10px;border-top:1px solid rgba(255,255,255,.25);font-size:13px;color:rgba(255,255,255,.9)}
.sidebar .who b{display:block;color:#fff;font-size:14px}
@media(max-height:820px){.nav button{padding:8px 14px;margin-bottom:1px}.brand{padding-bottom:14px;margin-bottom:6px}}

.main{padding:36px 40px 60px;max-width:1150px;width:100%;background:transparent;color:var(--ink)}
.main>header{margin-bottom:28px}

.badge{display:inline-block;padding:3px 10px;border-radius:99px;background:var(--head);font-size:12px;font-weight:600;color:#9a3412}
.badge.ok{background:rgba(16,185,129,.14);color:#047857}
.badge.off{background:rgba(239,68,68,.12);color:#b91c1c}

.stats{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:28px}
.stat{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:14px;padding:20px 24px;min-width:180px;flex:1;min-height:110px;display:flex;flex-direction:column;justify-content:center;box-shadow:var(--shadow);transition:transform .2s ease}
.stat:hover{transform:translateY(-2px)}
.stat b{display:block;font:700 36px Georgia,serif;color:#c2410c;margin-top:4px}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;margin-bottom:24px;box-shadow:var(--shadow)}
.panel h3{margin-bottom:14px;color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 16px}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:14px;color:var(--ink)}
th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:13px;color:#6b5a3a;font-weight:600;background:var(--head)}
td select{width:auto;padding:6px 10px}
.empty{padding:32px;text-align:center;color:var(--muted)}

.qrbox{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.qrbox #qr{padding:16px;background:#fff;border-radius:18px;box-shadow:0 0 0 6px rgba(245,158,11,.2),0 14px 30px rgba(27,42,65,.18)}
.count{font:700 48px Georgia,serif;color:#c2410c;line-height:1.1}
.timer{display:inline-block;font:700 20px ui-monospace,Consolas,monospace;color:var(--accent-dark);padding:2px 12px;border-radius:99px;background:rgba(245,158,11,.14);border:1px solid rgba(245,158,11,.3)}
#reader{max-width:340px;margin-bottom:14px}
.actions{display:flex;gap:8px}

#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#1b2a41;color:#fff;padding:12px 22px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:99;max-width:90vw;box-shadow:0 10px 30px rgba(27,42,65,.3)}
#toast.show{opacity:1}
#toast.err{background:var(--bad)}

/* ---------- attendance % ---------- */
.pct-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:6px}
.pct-row{margin-top:18px}
.pct-top .good{color:#15803d}.pct-top .bad{color:#dc2626}
.bar{height:10px;border-radius:99px;background:rgba(27,42,65,.10);overflow:hidden;margin-bottom:6px}
.bar>i{display:block;height:100%;border-radius:99px;background:#22c55e;transition:width .6s}
.bar.low>i{background:#ef4444}
.pct-warn,.pct-ok{margin-top:14px;padding:12px 14px;border-radius:12px;font-size:.95rem}
.pct-warn{background:rgba(239,68,68,.10);border:1px solid rgba(239,68,68,.4)}
.pct-ok{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.4)}

/* ---------- charts, search, pager ---------- */
.chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}
.chart-box{position:relative;height:260px}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.toolbar .search{flex:2;min-width:200px}
.toolbar select{flex:1;min-width:150px;width:auto}
.pager{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.pager .btn:disabled{cursor:not-allowed}

/* ---------- timetable ---------- */
.week{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.day{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:14px;min-width:0}
.day.today{border-color:var(--accent);box-shadow:0 0 0 3px rgba(245,158,11,.18)}
.day h4{margin:0 0 12px;font:700 16px Georgia,serif;display:flex;align-items:center;justify-content:space-between;gap:8px}
.slot{background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:10px 12px;margin-bottom:10px}
.slot-time{font-size:12px;color:var(--accent-dark);font-weight:600;margin-bottom:2px}

/* ---------- notification bell ---------- */
.bell-wrap{position:fixed;top:18px;right:26px;z-index:40}
.bell{position:relative;width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);color:#c2410c;display:grid;place-items:center;cursor:pointer;box-shadow:0 6px 16px rgba(27,42,65,.15);transition:transform .2s ease}
.bell:hover{transform:translateY(-1px);border-color:var(--accent)}
.bell svg{width:22px;height:22px}
.bell-count{position:absolute;top:-4px;right:-4px;min-width:20px;height:20px;padding:0 5px;border-radius:99px;background:var(--bad);color:#fff;font:700 11px/20px "Segoe UI",sans-serif;text-align:center}
.bell-panel{position:absolute;top:56px;right:0;width:min(380px,calc(100vw - 24px));max-height:70vh;overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 20px 40px rgba(27,42,65,.18)}
.bell-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff}
.bell-item{display:block;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--line);padding:12px 16px;color:var(--ink);font:inherit;cursor:pointer}
.bell-item:hover{background:rgba(245,158,11,.08)}
.bell-item b{display:block;font-size:14px}
.bell-item span{display:block;color:#475569;font-size:13px;margin-top:2px}
.bell-item small{color:var(--muted);font-size:12px}
.bell-item.unread{background:rgba(245,158,11,.12);border-left:3px solid var(--accent)}

/* ---------- ID card ---------- */
.idwrap{display:flex}
.idc{width:100%;max-width:340px;padding:18px 20px 0;text-align:center;color:#0f172a;background:linear-gradient(180deg,#f8fbff 0%,#dbeafe 100%);border:1px solid #cbd5e1;border-radius:18px;overflow:hidden;box-shadow:0 14px 30px rgba(27,42,65,.18);-webkit-print-color-adjust:exact;print-color-adjust:exact}
.idc-head{display:flex;align-items:center;gap:12px;text-align:left}
.idc-head img{width:56px;height:56px;border-radius:10px}
.idc-uni{font:800 17px/1.15 "Segoe UI",system-ui,sans-serif;color:#1e3a8a}
.idc-tag{display:inline-block;margin:12px 0;padding:3px 16px;border-radius:99px;background:#e2e8f0;border:1px solid #94a3b8;color:#1e293b;font:700 11px "Segoe UI",sans-serif;letter-spacing:.06em}
.idc-photo{display:block;width:150px;height:150px;margin:0 auto 12px;border-radius:50%;object-fit:cover;border:3px solid #1e3a8a;background:#bfdbfe}
.idc-name{margin:0 0 10px;font:800 18px "Segoe UI",system-ui,sans-serif;text-transform:uppercase;color:#0f172a}
.idc-rows{display:grid;grid-template-columns:auto 1fr;gap:5px 14px;text-align:left;font-size:14px}
.idc-rows span{font:700 14px Georgia,serif;color:#1e293b}
.idc-rows b{font-weight:500;word-break:break-word}
.idc-bottom{display:flex;justify-content:flex-end;margin-top:8px}
.idc-qr{padding:5px;background:#fff;border:1px solid #cbd5e1;border-radius:8px;line-height:0}
.idc-foot{margin:8px -20px 0;padding:16px 20px 12px;background:linear-gradient(90deg,#1e40af,#2563eb);color:#fff;font:600 12px "Segoe UI",sans-serif;border-radius:50% 50% 0 0/22px 22px 0 0}
.idedit{display:flex;gap:24px;flex-wrap:wrap;align-items:flex-start}
.photo-pick{width:190px}
.photo-prev{display:block;width:140px;height:140px;margin-bottom:8px;border-radius:50%;object-fit:cover;border:3px solid var(--accent)}
@media print{
  body *{visibility:hidden!important}
  #idcard,#idcard *{visibility:visible!important}
  #idcard{position:absolute;left:0;top:0;box-shadow:none}
}

/* ---------- marks folders ---------- */
.sfolder{border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden;background:#fff}
.sfolder.open{border-color:rgba(245,158,11,.6)}
.sfolder-head{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;background:transparent;border:0;color:inherit;font:inherit;text-align:left;cursor:pointer}
.sfolder-head:hover{background:rgba(245,158,11,.08)}
.sf-ico{font-size:20px}.sf-name{font-weight:700}
.sf-meta{margin-left:auto;display:flex;align-items:center;gap:12px}
.sf-chev{font-size:22px;line-height:1;transition:transform .15s}
.sfolder.open .sf-chev{transform:rotate(90deg)}
.sfolder-body{padding:4px 16px 14px;border-top:1px solid var(--line)}

@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* =============== tablets / small laptops =============== */
@media(max-width:820px){
  html,body{overflow-x:hidden}
  :root{--dock-h:64px;--top-h:54px}
  html{text-size-adjust:100%}
  body{-webkit-tap-highlight-color:transparent;background-attachment:scroll}
  button,.btn,a{touch-action:manipulation}

  /* login */
  .auth{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .auth-side{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;align-items:center;gap:14px 16px;padding:calc(22px + env(safe-area-inset-top,0px)) 20px 22px;border-radius:0 0 28px 28px}
  .auth-side img{flex:none;width:62px;border-radius:16px}
  .auth-side h1{font-size:26px;margin:0}
  .auth-side p{display:none}
  .auth-side .credits{display:block;flex:1 1 100%;max-width:none;margin:0;font-size:12px;line-height:1.6}
  .auth-side .name{display:inline-block;margin-right:10px;font-size:11.5px;letter-spacing:1.5px}
  .auth-main{align-items:flex-start;padding:22px 16px 40px}
  .auth-card{max-width:none;padding:24px 20px;border-radius:22px}

  /* top bar */
  .shell{grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr;align-content:start}
  .shell::before{content:"UniPulse";display:flex;align-items:center;position:sticky;top:0;z-index:25;
    height:calc(var(--top-h) + env(safe-area-inset-top,0px));padding:env(safe-area-inset-top,0px) 64px 0 18px;
    font:700 20px Georgia,"Times New Roman",serif;color:#b45309;background:rgba(251,246,236,.94);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}

  /* bottom dock */
  .sidebar{position:fixed;top:auto;left:0;right:0;bottom:0;z-index:30;height:auto;overflow:visible;
    flex-direction:row;flex-wrap:nowrap;align-items:center;gap:8px;
    padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));border-radius:22px 22px 0 0;box-shadow:0 -10px 30px rgba(27,42,65,.25)}
  .brand{flex:none;padding:0;margin:0;border:0}
  .brand span{display:none}
  .brand img{width:34px;height:34px;border-radius:10px}
  .nav,.sidebar .nav{flex:1;min-width:0;display:flex;gap:6px;padding:2px;overflow-x:auto;overflow-y:hidden;
    scroll-snap-type:x proximity;scrollbar-width:none;
    -webkit-mask-image:linear-gradient(90deg,#000 90%,transparent);mask-image:linear-gradient(90deg,#000 90%,transparent)}
  .nav::-webkit-scrollbar{display:none}
  .nav button{flex:none;width:auto;min-height:40px;margin:0;padding:0 12px;border-radius:12px;background:transparent;
    color:rgba(255,255,255,.92);font-size:12.5px;font-weight:600;white-space:nowrap;scroll-snap-align:center}
  .nav button:hover{transform:none;background:rgba(255,255,255,.14)}
  .nav button.on{background:#fff;color:#9A3412;font-weight:700}
  .sidebar .who{display:none}

  /* content */
  .main{max-width:none;padding:18px 14px calc(var(--dock-h) + 36px + env(safe-area-inset-bottom,0px))}
  .main,.panel{min-width:0}
  .main>header{margin-bottom:18px}
  .main>header :is(h1,h2){font-size:26px;line-height:1.15}
  .stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:20px}
  .stat{min-width:0;min-height:92px;padding:16px;border-radius:16px}
  .stat b{font-size:30px}
  .panel{padding:16px;border-radius:18px;margin-bottom:14px}
  .grid,.week{grid-template-columns:minmax(0,1fr)}
  .chart-box{height:230px}
  table{font-size:13px}
  th,td{padding:10px 8px;white-space:normal;vertical-align:middle}
  th{font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}
  td .badge,td .btn,td .actions{white-space:nowrap}
  .toolbar .search{flex:1 1 100%;min-width:0}
  .toolbar select{flex:1 1 calc(50% - 6px);min-width:0}
  .pager{justify-content:center}
  .pager .btn{flex:1 1 40%}

  /* controls (16px stops iPhone zoom) */
  input,select,textarea{font-size:16px;min-height:46px;border-radius:12px}
  textarea{min-height:110px}
  td select{min-height:36px;font-size:14px}
  .btn{min-height:46px;border-radius:12px}
  .btn.sm{min-height:36px;padding:8px 14px}
  .btn:active{transform:scale(.98)}
  .actions{flex-wrap:wrap}
  .panel form>.btn{width:100%}
  .idc{margin:0 auto}

  /* QR session card */
  .qrbox{flex-direction:column;align-items:center;gap:20px}
  .qrbox>div:last-child{width:100%;display:grid;grid-template-columns:1fr 1fr;column-gap:12px;text-align:center;background:var(--soft);border:1px solid var(--line);border-radius:16px;padding:16px}
  .qrbox>div:last-child>:nth-child(1){grid-column:1;grid-row:1}
  .qrbox>div:last-child>:nth-child(2){grid-column:1;grid-row:2}
  .qrbox>div:last-child>:nth-child(3){grid-column:2;grid-row:1}
  .qrbox>div:last-child>:nth-child(4){grid-column:2;grid-row:2;justify-self:center;align-self:center}
  .qrbox>div:last-child>:nth-child(5){grid-column:1/-1;grid-row:3;max-width:none!important;margin:14px 0 0;padding-top:12px;border-top:1px solid var(--line)}

  /* bell goes in the top bar */
  .bell-wrap{top:calc(5px + env(safe-area-inset-top,0px));bottom:auto;right:12px}
  .bell{width:42px;height:42px;box-shadow:none}
  .bell-panel{top:50px;max-height:calc(100dvh - 140px)}

  #toast{bottom:calc(var(--dock-h) + 20px + env(safe-area-inset-bottom,0px));width:max-content;max-width:calc(100vw - 32px);text-align:center}
}

/* =============== phones =============== */
@media(max-width:480px){
  h1{font-size:23px}h2{font-size:19px}
  .main{padding:16px 12px calc(var(--dock-h) + 36px + env(safe-area-inset-bottom,0px))}
  .panel{padding:16px}
  .auth-card{padding:22px 18px}
  .stat{padding:14px}.stat b{font-size:28px}
  .qrbox #qr{padding:12px;max-width:100%}
  .qrbox #qr canvas{max-width:100%;height:auto}
  .count{font-size:42px}
  #reader{width:100%;max-width:100%}
  .chart-grid{grid-template-columns:minmax(0,1fr)}
  .sfolder-head{flex-wrap:wrap;padding:12px;gap:8px}
  .sf-meta{width:100%;margin-left:32px}
  .sfolder-body{padding:4px 8px 12px}
}

/* =============== installed app polish =============== */
.nav button,.sidebar,.brand,.bell,.btn,.linkbtn,.sfolder-head{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
html{overscroll-behavior-x:none}
body{-webkit-tap-highlight-color:transparent}
.btn.ghost[data-install]{margin-top:14px}
@media (display-mode: standalone){
  body{overscroll-behavior-y:contain}
}