/* Heroes Portal — premium theme layer (loaded last). Brand: Heroes red + deep charcoal, Arial. */
:root{
  color-scheme:light dark;
  --red:#c8202b; --red-dark:#a3161f; --red-bright:#e0303b; --red-soft:#fcecec;
  --charcoal:#17181b; --charcoal-2:#24262b; --charcoal-3:#2f3238;
  --ground:#f2f3f5; --panel:#ffffff; --panel2:#f7f8fa; --ink:#15171a; --muted:#6b7280;
  --line:#e6e8ec; --line-strong:#d3d7de;
  --ok:#15803d; --ok-soft:#e8f6ee; --warn:#b45309; --warn-soft:#fff5e6; --bad:#c62828; --bad-soft:#fdecec; --info:#1d4ed8; --info-soft:#eaf1fe;
  --shadow-xs:0 1px 2px rgba(16,24,40,.06);
  --shadow:0 1px 2px rgba(16,24,40,.04),0 2px 6px rgba(16,24,40,.04),0 10px 24px -8px rgba(16,24,40,.10);
  --shadow-lg:0 2px 4px rgba(16,24,40,.05),0 18px 40px -12px rgba(16,24,40,.22);
  --radius:18px; --radius-sm:12px;
  --ring:0 0 0 4px color-mix(in srgb,var(--red) 16%,transparent);
}
@media (prefers-color-scheme: dark){
  :root{ --ground:#0e0f11; --panel:#17191c; --panel2:#1e2024; --ink:#eef0f3; --muted:#9aa3ae; --line:#2a2d32; --line-strong:#3a3e45;
    --red:#e23a45; --red-dark:#c52c37; --red-soft:#35171a; --charcoal:#0b0c0e; --charcoal-2:#16181b;
    --ok:#4cc27d; --ok-soft:#16301f; --warn:#e6a23c; --warn-soft:#342812; --bad:#ff6b6b; --bad-soft:#3a1b1b; --info:#6aa8ec; --info-soft:#162a40;
    --shadow:0 1px 2px rgba(0,0,0,.5),0 12px 28px -10px rgba(0,0,0,.6); --shadow-lg:0 20px 44px -12px rgba(0,0,0,.7); }
}

/* ---------- page ---------- */
body{background:
  radial-gradient(1200px 380px at 50% -120px,color-mix(in srgb,var(--charcoal) 10%,transparent),transparent 70%),
  var(--ground);font-size:15px;letter-spacing:.005em;min-height:100vh}
.wrap{max-width:1180px;padding-inline:20px;padding-bottom:calc(72px + env(safe-area-inset-bottom))}
::selection{background:color-mix(in srgb,var(--red) 22%,transparent)}

/* ---------- header ---------- */
header.top{background:linear-gradient(180deg,var(--charcoal-2) 0%,var(--charcoal) 100%);border-bottom:0;
  box-shadow:0 1px 0 rgba(255,255,255,.04) inset,0 8px 24px -12px rgba(0,0,0,.5)}
header.top::after{content:"";display:block;height:3px;background:linear-gradient(90deg,var(--red-dark),var(--red-bright) 50%,var(--red-dark))}
header.top .in{max-width:1180px;padding:12px 20px;min-height:72px}
.brand{gap:14px}
.brand img{height:46px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.35))}
.brand .logos{gap:8px}
.brand b{font-size:15px;letter-spacing:.16em;font-weight:700}
.brand span{font-size:11.5px;letter-spacing:.06em;opacity:.55;margin-top:3px}
.seg{background:rgba(255,255,255,.06)!important;border:1px solid rgba(255,255,255,.12)!important;border-radius:12px!important;padding:4px!important;box-shadow:inset 0 1px 2px rgba(0,0,0,.35)}
.seg button{padding:8px 16px!important;border-radius:9px!important;font-size:13px!important;letter-spacing:.02em;transition:background .15s,color .15s}
.seg button:hover{color:#fff!important}
.seg button[aria-pressed="true"]{background:linear-gradient(180deg,var(--red-bright),var(--red))!important;box-shadow:0 2px 8px rgba(200,32,43,.45),inset 0 1px 0 rgba(255,255,255,.2)}
.me{color:rgba(255,255,255,.7)!important;font-size:13px}
.top .btn.sm{border-radius:10px;border-color:rgba(255,255,255,.22)!important}

/* ---------- type ---------- */
h1{font-size:30px;letter-spacing:-.02em} h2{font-size:21px;letter-spacing:-.015em} h3{font-size:16.5px}
.eyebrow{font-size:11px;letter-spacing:.16em}
.muted{color:var(--muted)}

/* ---------- surfaces ---------- */
.panel{border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);background:var(--panel)}
.box{padding:26px 28px;gap:18px}
.section{padding:26px 28px}
.card-sub{border-radius:var(--radius-sm);background:var(--panel2);border-color:var(--line)}
.banner{border-radius:var(--radius-sm);padding:14px 18px}
.statement{border-radius:var(--radius-sm);border-left-width:3px;box-shadow:var(--shadow-xs)}
.path{border-radius:10px;background:var(--panel2);font-size:13.5px}

/* ---------- buttons ---------- */
.btn{min-height:42px;padding:10px 18px;border-radius:11px;font-size:14px;letter-spacing:.01em;box-shadow:var(--shadow-xs);border-color:var(--line-strong);background:var(--panel)}
.btn:hover{background:var(--panel2);border-color:color-mix(in srgb,var(--ink) 25%,transparent)}
.btn.primary,.btn.redfill{background:linear-gradient(180deg,var(--red-bright) 0%,var(--red) 55%,var(--red-dark) 100%);border-color:var(--red-dark);color:#fff;
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 6px 16px -6px rgba(200,32,43,.6)}
.btn.primary:hover,.btn.redfill:hover{filter:brightness(1.06);background:linear-gradient(180deg,var(--red-bright) 0%,var(--red) 55%,var(--red-dark) 100%)}
.btn.sm{min-height:34px;padding:6px 13px;border-radius:9px;font-size:13px}
.btn.icon{min-height:34px}
.btn.danger{box-shadow:none}
.btn.big{min-height:50px;padding:13px 24px;font-size:15px;border-radius:13px}
:is(.btn,input,select,textarea,.tab,.docbtn,.card-btn,.person):focus-visible{outline:none!important;box-shadow:var(--ring)!important}

/* ---------- inputs ---------- */
.field{gap:7px}
.field label{font-size:12.5px;font-weight:700;letter-spacing:.02em;color:color-mix(in srgb,var(--ink) 85%,transparent)}
.field input,.field select,.field textarea,.tel select,.range input,.locrow input,.fbrow input,.fbrow select{
  min-height:46px;border-radius:11px;border:1px solid var(--line-strong);background:var(--panel);padding:11px 14px;font-size:15px;box-shadow:var(--shadow-xs)}
.field textarea{min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus,.tel select:focus,.range input:focus,.locrow input:focus{border-color:var(--red);box-shadow:var(--ring)}
.field input[type=file]{min-height:auto;padding:9px}
.checkrow{border-radius:var(--radius-sm);padding:16px;background:var(--panel2)}
.actions{padding:18px 28px;background:linear-gradient(180deg,var(--panel2),var(--panel));border-radius:0 0 var(--radius) var(--radius)}
.section h3::before{width:4px;height:20px;background:linear-gradient(180deg,var(--red-bright),var(--red-dark))}

/* ---------- pills & tags ---------- */
.pill{padding:4px 11px;font-size:11.5px;letter-spacing:.02em;border:1px solid transparent}
.pill.ok{border-color:color-mix(in srgb,var(--ok) 20%,transparent)}
.pill.warn{border-color:color-mix(in srgb,var(--warn) 22%,transparent)}
.tag{border-radius:7px;padding:4px 9px;letter-spacing:.08em;background:var(--charcoal-2)}
.badge{box-shadow:0 2px 6px rgba(200,32,43,.4)}

/* ---------- student hero ---------- */
.hero{margin-top:26px;margin-bottom:20px;padding:30px 32px;padding-right:150px;border-radius:22px;gap:10px;
  background:radial-gradient(420px 260px at 100% 0%,color-mix(in srgb,var(--red) 55%,transparent),transparent 70%),
    linear-gradient(135deg,var(--charcoal-2) 0%,var(--charcoal) 100%);
  box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.06)}
.hero::after{right:-70px;top:-70px;width:220px;height:220px;background:none;border:22px solid color-mix(in srgb,var(--red) 70%,transparent);opacity:.55}
.hero::before{right:120px;bottom:-80px;width:150px;height:150px;border:16px solid rgba(255,255,255,.05)}
.hero h1{font-size:30px}
.hero .eyebrow{color:#ff9ea5}
.school-logo{width:96px!important;height:96px!important;right:28px!important;border-radius:18px!important;padding:6px!important;
  box-shadow:0 10px 28px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.1)!important}

/* ---------- steps ---------- */
.steps{gap:10px;margin-bottom:20px}
.steps li{padding:12px 14px;border-radius:14px;box-shadow:var(--shadow-xs);font-size:14px}
.steps li::before{width:28px;height:28px}
.steps li.on{border-color:var(--red);box-shadow:0 0 0 1px var(--red),0 8px 20px -10px rgba(200,32,43,.5)}
.steps li.on::before{background:linear-gradient(180deg,var(--red-bright),var(--red-dark))}

/* ---------- documents ---------- */
.docbtn{border-radius:var(--radius-sm);padding:14px 16px;box-shadow:var(--shadow-xs)}
.docbtn[aria-current="true"]{box-shadow:inset 4px 0 0 var(--red),var(--shadow)}
.viewer{background:linear-gradient(180deg,#e7e9ed,#dfe2e7);border-radius:var(--radius);padding:18px;gap:18px}
.viewer canvas{border-radius:3px;box-shadow:0 1px 3px rgba(0,0,0,.12),0 14px 30px -10px rgba(0,0,0,.35)}
.sigpad{border-radius:var(--radius-sm);border:2px dashed var(--line-strong)}
.docrow{padding:14px 0}

/* ---------- admin: tabs, cards, class page ---------- */
.tabs{border-radius:16px!important;padding:6px!important;gap:4px!important;margin-block:24px 20px!important;box-shadow:var(--shadow)!important;scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent)}
.tabs::-webkit-scrollbar{display:none}
.tab{padding:10px 18px!important;border-radius:11px!important;font-size:14px!important;transition:background .15s,color .15s}
.tab[aria-selected="true"]{background:linear-gradient(180deg,var(--charcoal-3),var(--charcoal))!important;color:#fff!important;box-shadow:0 6px 14px -6px rgba(0,0,0,.5)}
.cards{gap:16px!important;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))!important}
.card-btn{padding:20px!important;border-radius:var(--radius)!important;min-height:168px;position:relative;overflow:hidden;
  transition:transform .15s,box-shadow .15s,border-color .15s!important}
.card-btn::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--red-dark),var(--red-bright))}
.card-btn:hover{transform:translateY(-3px)!important;box-shadow:var(--shadow-lg)!important;border-color:var(--line)!important}
.card-title{font-size:18px!important;letter-spacing:-.01em}
.card-open{font-size:13px}
.slogo{height:40px!important;filter:drop-shadow(0 2px 4px rgba(0,0,0,.15))}
.class-head .slogo{height:64px!important;width:auto!important}
.class-head{border-top:0!important;position:relative;overflow:hidden;padding-top:26px!important}
.class-head::before,.todo::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--red-dark),var(--red-bright))}
.todo{border-top:0!important;position:relative;overflow:hidden}
.step{padding:26px 28px!important;gap:20px!important;grid-template-columns:52px minmax(0,1fr)!important;margin-bottom:18px!important}
.step-no{width:44px!important;height:44px!important;font-size:18px!important;background:linear-gradient(180deg,var(--red-bright),var(--red-dark))!important;
  box-shadow:0 0 0 5px var(--red-soft),0 8px 18px -8px rgba(200,32,43,.7)}
.stat div{border-radius:12px!important;padding:10px 16px!important;background:var(--panel2)!important}
.stat b{font-size:22px!important}
.person{border-radius:var(--radius-sm)!important;padding:14px 16px!important;box-shadow:var(--shadow-xs);transition:border-color .15s,box-shadow .15s}
.person:hover{box-shadow:var(--shadow)}
.sheet{border-radius:var(--radius-sm)!important;box-shadow:var(--shadow-xs)}
.store,.locset{border-radius:14px!important}
.bigswitch{border-radius:14px!important;box-shadow:var(--shadow-xs)}
table.list th{background:var(--panel2)}
details.more > summary{padding:20px 28px!important}

/* ---------- login ---------- */
body:has(#login:not([hidden])){background:
  radial-gradient(900px 500px at 85% -10%,color-mix(in srgb,var(--red) 35%,transparent),transparent 60%),
  linear-gradient(180deg,var(--charcoal-2) 0%,var(--charcoal) 55%,var(--ground) 55.1%)}
.login{max-width:430px!important;margin:9vh auto 0!important;padding:34px 34px 30px!important;border-top:0!important;box-shadow:var(--shadow-lg)!important;border-radius:22px!important;position:relative;overflow:hidden}
.login::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--red-dark),var(--red-bright),var(--red-dark))}
.loginlogo{height:88px!important;filter:drop-shadow(0 4px 10px rgba(0,0,0,.12))}
.login h2{font-size:26px}

/* ---------- toast ---------- */
.toast{background:rgba(23,24,27,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:14px;border-left:0;
  box-shadow:0 18px 40px -12px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.06);padding:14px 20px;bottom:calc(24px + env(safe-area-inset-bottom))}
.toast::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--red-bright);margin-right:10px;vertical-align:1px}

/* ---------- phones ---------- */
@media (max-width:640px){
  .wrap{padding-inline:14px}
  header.top .in{padding:10px 14px;min-height:62px;gap:10px}
  .brand img{height:40px}
  .brand b{font-size:13px;letter-spacing:.12em}
  .brand span{display:none}
  .top .right{width:100%;margin-left:0;justify-content:space-between;flex-wrap:nowrap;gap:8px}
  .me{display:none}
  .seg{flex:1;display:flex!important}
  .seg button{flex:1;white-space:nowrap;padding:8px 6px!important;font-size:12.5px!important}
  .top .btn.sm{white-space:nowrap}
  .class-head h1{font-size:21px}
  .class-head .slogo{height:48px!important}
  .stat{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px!important;width:100%}
  .stat div{padding:8px 10px!important;font-size:11.5px!important;line-height:1.25}
  .stat b{font-size:19px!important}
  .steps li{font-size:0;justify-content:center;padding:9px}
  .steps li::before{font-size:13px}
  .steps li.on{font-size:13px;flex:2}
  h1{font-size:24px} h2{font-size:19px}
  .box,.section{padding:20px 18px}
  .actions{padding:14px 18px}
  .actions .btn{flex:1 1 auto}
  .hero{padding:22px 20px;padding-top:96px;border-radius:18px}
  .hero h1{font-size:23px}
  .school-logo{width:64px!important;height:64px!important;top:18px!important;left:20px!important;right:auto!important;transform:none!important;border-radius:14px!important}
  .tabs{margin-block:16px 14px!important;border-radius:14px!important}
  .tab{padding:9px 14px!important;font-size:13.5px!important}
  .step{padding:20px 18px!important;grid-template-columns:1fr!important;gap:12px!important}
  .card-btn{min-height:0}
  .login{margin-top:5vh!important;padding:26px 22px!important}
  .btn{min-height:44px}
  .btn.sm{min-height:36px}
  .linkbox .btn{flex:1}
}
@media (prefers-reduced-motion: reduce){.card-btn:hover{transform:none!important}}

/* ---------- student page: tabs ---------- */
.homehead{padding-bottom:18px}
.htabs{display:flex;gap:6px;overflow-x:auto;padding:8px 20px;border-block:1px solid var(--line);background:var(--panel2);position:sticky;top:75px;z-index:5;scrollbar-width:none;scroll-margin-top:80px}
.htabs::-webkit-scrollbar{display:none}
.htab{flex:none;display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;background:none;border-radius:12px;padding:10px 14px;font-weight:700;font-size:14px;color:var(--muted);cursor:pointer;white-space:nowrap;transition:background .15s,color .15s}
.htab:hover{background:var(--panel);color:var(--ink)}
.htab[aria-selected="true"]{background:var(--panel);color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-xs),inset 0 -3px 0 var(--red)}
.htab .hi{font-size:16px;line-height:1}
.tb{font-style:normal;display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:99px;font-size:11px;font-weight:700}
.tb.ok{background:var(--ok-soft);color:var(--ok)}
.tb.todo{background:var(--warn-soft);color:var(--warn)}
.tb.now{background:var(--red);color:#fff;animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 5px color-mix(in srgb,var(--red) 20%,transparent)}}
.hpane{min-height:260px}
.dlist{display:grid;gap:10px}
.ditem{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow-xs)}
.dico{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--red);background:var(--red-soft);border:1px solid color-mix(in srgb,var(--red) 18%,transparent)}
.dico.book{font-size:20px}
.dtxt{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;min-width:0}
.dtxt b{flex-basis:100%;font-size:15px;line-height:1.3}
.dbtns{display:flex;gap:8px}
.kvs{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin:0}
.kvs div{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel2)}
.kvs dt{font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.02em}
.kvs dd{margin:3px 0 0;font-weight:700;overflow-wrap:anywhere}
.fbwrap{display:grid;gap:14px}
@media (max-width:640px){
  .htabs{top:65px;padding:8px 12px;gap:4px}
  .htab{padding:9px 11px;font-size:13px;gap:6px}
  .ditem{grid-template-columns:40px minmax(0,1fr);padding:12px 14px;gap:12px}
  .ditem > .btn,.ditem > label.btn,.ditem .dbtns{grid-column:1/-1}
  .ditem .dbtns .btn{flex:1}
  .ditem > .btn,.ditem > label.btn{width:100%}
  .dico{width:40px;height:40px}
}

/* ---------- student page: unopened tabs, counts, to-do ---------- */
.htab.unseen{color:var(--ink);background:color-mix(in srgb,var(--warn) 12%,var(--panel));border-color:color-mix(in srgb,var(--warn) 45%,transparent);position:relative}
.htab.unseen.st-now,.htab.st-now{background:color-mix(in srgb,var(--red) 10%,var(--panel));border-color:color-mix(in srgb,var(--red) 45%,transparent);color:var(--ink)}
.htab.st-todo:not([aria-selected="true"]){color:var(--ink)}
.newdot{position:absolute;top:5px;right:5px;width:9px;height:9px;border-radius:50%;background:var(--red);box-shadow:0 0 0 2px var(--panel);animation:pulse 1.6s ease-in-out infinite}
.tb.num{background:var(--charcoal-2);color:#fff}
.tb.todo{background:var(--warn);color:#fff;padding:0 7px}
.todobar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:4px 14px;align-items:center;width:100%;text-align:left;border:1px solid color-mix(in srgb,var(--warn) 45%,transparent);
  background:linear-gradient(180deg,color-mix(in srgb,var(--warn) 10%,var(--panel)),var(--panel));border-radius:14px;padding:14px 16px;cursor:pointer;font:inherit;color:var(--ink);box-shadow:var(--shadow-xs)}
.todobar.done{border-color:color-mix(in srgb,var(--ok) 40%,transparent);background:linear-gradient(180deg,var(--ok-soft),var(--panel));cursor:default}
.tdb-ico{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:17px;color:#fff;background:linear-gradient(180deg,#f0a53a,var(--warn));box-shadow:0 6px 14px -6px rgba(180,83,9,.6)}
.todobar.done .tdb-ico{background:linear-gradient(180deg,#34c46f,var(--ok));box-shadow:none}
.tdb-txt{display:grid;gap:2px;min-width:0}.tdb-txt span{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tdb-go{font-weight:700;color:var(--warn);font-size:14px}
.tdb-bar{grid-column:1/-1;height:6px;border-radius:99px;background:var(--line);overflow:hidden;margin-top:6px}
.tdb-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--warn),#f0a53a);border-radius:99px}
.todobar.done .tdb-bar i{background:var(--ok)}
.todomodal{position:fixed;inset:0;z-index:60;background:rgba(10,11,13,.55);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);display:grid;place-items:center;padding:16px;animation:fadein .2s ease}
.tdm-card{width:min(520px,100%);max-height:calc(100vh - 32px);overflow:auto;background:var(--panel);border-radius:22px;padding:24px;display:grid;gap:14px;box-shadow:var(--shadow-lg);border-top:5px solid var(--warn);animation:popin .25s ease}
.tdm-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.tdm-list{display:grid;gap:8px}
.tdm-item{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px;align-items:center;text-align:left;width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--panel2);cursor:pointer;font:inherit;color:var(--ink)}
.tdm-item:hover{border-color:var(--line-strong);background:var(--panel)}
.tdm-item.urgent{border-color:color-mix(in srgb,var(--warn) 50%,transparent);background:color-mix(in srgb,var(--warn) 8%,var(--panel))}
.tdm-item.now{border-color:color-mix(in srgb,var(--red) 50%,transparent);background:color-mix(in srgb,var(--red) 7%,var(--panel))}
.tdm-ico{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;font-size:19px;background:var(--panel);border:1px solid var(--line)}
.tdm-txt{display:grid;gap:2px}.tdm-txt span{font-size:12.5px;color:var(--muted)}
.tdm-arrow{font-size:24px;color:var(--muted)}
@keyframes fadein{from{opacity:0}}
@keyframes popin{from{opacity:0;transform:translateY(12px) scale(.98)}}
@media (max-width:640px){.todomodal{place-items:end center;padding:0}.tdm-card{border-radius:22px 22px 0 0;padding:20px 18px calc(20px + env(safe-area-inset-bottom))}}

/* ---------- student page: keep your page ---------- */
.savecard{display:grid;gap:12px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--panel2)}
.savecard > div:first-child{display:grid;gap:2px}
.savebtns{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}
.sbtn{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line-strong);border-radius:12px;background:var(--panel);font:inherit;font-weight:700;font-size:14px;color:var(--ink);text-decoration:none;cursor:pointer;box-shadow:var(--shadow-xs);min-height:48px}
.sbtn:hover{border-color:var(--red)}
.sbtn span{font-size:19px;line-height:1}
.sbtn[data-save="wa"]{border-color:color-mix(in srgb,#25d366 55%,transparent);background:color-mix(in srgb,#25d366 8%,var(--panel))}
.savecard.big{background:var(--panel);border:0;padding:0}
.savepop{border-top-color:var(--ok)!important}
.howto{margin:0;padding-left:22px;display:grid;gap:10px;font-size:15px}
@media (max-width:640px){.savebtns{grid-template-columns:1fr 1fr}}

/* ---------- form designer ---------- */
.newform{border-top:0!important;position:relative;overflow:hidden}
.newform::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--red-dark),var(--red-bright))}
.designer{display:grid;gap:14px;margin-top:6px}
.dz-top{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:12px 16px;position:sticky;top:78px;z-index:6}
.dz-title{flex:1;min-width:220px;display:grid;gap:2px}
.dz-title input{font-size:18px;font-weight:700;border:1px solid transparent;border-radius:8px;padding:4px 6px;margin-left:-6px;background:transparent;color:var(--ink)}
.dz-title input:hover,.dz-title input:focus{border-color:var(--line-strong);outline:none;background:var(--panel)}
.dz-body{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:16px;align-items:start}
.dz-pages{display:grid;gap:18px;justify-items:center;min-width:0}
.dz-page{position:relative;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.12),0 14px 30px -12px rgba(0,0,0,.35)}
.dz-page canvas{display:block}
.dz-num{position:absolute;left:-2px;top:-20px;font-size:11px;color:var(--muted);font-weight:700}
.dz-layer{position:absolute;inset:0;touch-action:none}
body.dz-drawing .dz-layer{cursor:crosshair}
.dz-box{position:absolute;border:1.5px solid #2563eb;background:rgba(37,99,235,.10);border-radius:3px;cursor:move;box-sizing:border-box}
.dz-box.sig{border-color:#c8202b;background:rgba(200,32,43,.08)}
.dz-box.tbl{border-color:#15803d;background:rgba(21,128,61,.05)}
.dz-box.auto{border-style:dashed}
.dz-box.on{box-shadow:0 0 0 3px rgba(37,99,235,.35);z-index:3}
.dz-lbl{position:absolute;left:0;bottom:100%;font-size:10px;line-height:1;padding:2px 4px;background:#2563eb;color:#fff;border-radius:3px 3px 0 0;white-space:nowrap;pointer-events:none;max-width:260px;overflow:hidden;text-overflow:ellipsis}
.dz-box.sig .dz-lbl{background:#c8202b}.dz-box.tbl .dz-lbl{background:#15803d}
.dz-h{position:absolute;right:-5px;bottom:-5px;width:10px;height:10px;background:#fff;border:2px solid currentColor;border-radius:2px;cursor:nwse-resize;color:#2563eb}
.dz-box.sig .dz-h{color:#c8202b}.dz-box.tbl > .dz-h{color:#15803d}
.dz-row{position:absolute;left:0;right:0;border-top:1px dashed rgba(21,128,61,.55);pointer-events:none}
.dz-col{position:absolute;top:0;bottom:0;border-left:1.5px solid rgba(21,128,61,.8);border-right:1.5px solid rgba(21,128,61,.8);background:rgba(21,128,61,.07);cursor:ew-resize}
.dz-col b{position:absolute;top:2px;left:3px;font-size:9.5px;color:#15803d;background:rgba(255,255,255,.85);padding:1px 3px;border-radius:2px;white-space:nowrap;max-width:95%;overflow:hidden;text-overflow:ellipsis}
.dz-col.on{background:rgba(21,128,61,.18)}
.dz-col .dz-h{color:#15803d;bottom:2px}
.dz-ghost{position:absolute;border:2px dashed #2563eb;background:rgba(37,99,235,.12);pointer-events:none}
.dz-side{position:sticky;top:150px;max-height:calc(100vh - 170px);overflow:auto;padding:16px;display:grid;gap:14px;align-content:start}
.dz-props{display:grid;gap:10px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--panel2)}
.dz-props .btn{justify-self:start}
.dz-pal details{border-top:1px solid var(--line);padding:6px 0}
.dz-pal summary{font-weight:700;font-size:13px;padding:6px 0}
.dz-items{display:grid;gap:4px}
.dz-item{text-align:left;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:7px 10px;font:inherit;font-size:13px;cursor:pointer;color:var(--ink);display:flex;justify-content:space-between;gap:6px}
.dz-item:hover{border-color:#2563eb;background:rgba(37,99,235,.06)}
.dz-item.done{color:var(--muted)}.dz-item span{color:var(--ok);font-weight:700}
@media (max-width:900px){.dz-body{grid-template-columns:1fr}.dz-side{position:static;max-height:none}.dz-top{position:static}}

/* ---------- student test ---------- */
.tprog{display:flex;align-items:center;gap:12px;position:sticky;top:140px;z-index:4;background:var(--panel);padding:10px 0}
.tprog-bar{flex:1;height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.tprog-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red-dark),var(--red-bright));border-radius:99px;transition:width .2s}
.tprog span{font-size:13px;font-weight:700;color:var(--muted);white-space:nowrap}
.tlist{display:grid;gap:12px}
.tq{border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:0;background:var(--panel);display:grid;gap:10px;box-shadow:var(--shadow-xs)}
.tq.ok{border-color:color-mix(in srgb,var(--ok) 35%,transparent)}
.tq.err{border-color:var(--bad);background:var(--bad-soft)}
.tq legend{display:flex;gap:10px;align-items:flex-start;font-weight:700;font-size:15px;line-height:1.4;padding:0;float:left;width:100%}
.tn{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--charcoal-2);color:#fff;font-size:12.5px}
.tq.ok .tn{background:var(--ok)}
.topts{display:grid;gap:6px;clear:both}
.topt{cursor:pointer}
.topt input{position:absolute;opacity:0;width:1px;height:1px}
.topt span{display:flex;gap:10px;align-items:flex-start;padding:11px 12px;border:1px solid var(--line-strong);border-radius:11px;background:var(--panel2);font-size:14.5px;line-height:1.35}
.topt span b{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;border:1.5px solid var(--line-strong);font-size:12px;background:var(--panel)}
.topt:hover span{border-color:var(--muted)}
.topt input:checked + span{border-color:var(--red);background:color-mix(in srgb,var(--red) 7%,var(--panel));box-shadow:0 0 0 1px var(--red)}
.topt input:checked + span b{background:var(--red);border-color:var(--red);color:#fff}
.topt input:focus-visible + span{box-shadow:var(--ring)}
.tsend{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding-top:6px}
.testdone{display:flex;gap:18px;align-items:center;flex-wrap:wrap;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--panel2)}
.tscore{width:110px;height:110px;border-radius:50%;display:grid;place-items:center;align-content:center;text-align:center;border:6px solid currentColor;flex:none}
.tscore b{font-size:32px;line-height:1;color:var(--ink)}.tscore b small{font-size:15px;color:var(--muted)}
.tscore span{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;margin-top:4px;padding:0 6px}
.tscore.ok{color:var(--ok)}.tscore.warn{color:var(--warn)}.tscore.bad{color:var(--bad)}
@media (max-width:640px){.tprog{top:118px}}
.teq{display:grid;gap:10px}
.teq textarea{width:100%;border:1px solid var(--line-strong);border-radius:9px;padding:8px 10px;font:inherit;font-weight:700;resize:vertical;background:var(--panel)}
.teo{display:grid;grid-template-columns:22px 22px minmax(0,1fr);gap:8px;align-items:center}
.teo input[type=radio]{accent-color:var(--ok);width:18px;height:18px}
.teo input[data-o]{border:1px solid var(--line-strong);border-radius:9px;padding:7px 10px;font:inherit;background:var(--panel)}
.teo:has(input[type=radio]:checked) input[data-o]{border-color:var(--ok);background:var(--ok-soft);font-weight:700}

/* ---------- line icons on the student page ---------- */
.ic{width:20px;height:20px;display:block;flex:none}
.htab .hi{display:grid;place-items:center;color:var(--muted)}
.htab .hi .ic{width:18px;height:18px}
.htab[aria-selected="true"] .hi,.htab.st-now .hi{color:var(--red)}
.tdm-ico{color:var(--red)}
.tdm-ico .ic{width:20px;height:20px}
.sbtn .ic{width:21px;height:21px;color:var(--red)}
.sbtn[data-save="wa"] .ic{color:#128c4b}
.dico .ic{width:21px;height:21px}
.dico.book{font-size:inherit}
/* test: overview of the correct answers */
.treview{display:grid;gap:10px}
.trv{border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--panel);display:grid;gap:8px;box-shadow:var(--shadow-xs)}
.trv.bad{border-color:color-mix(in srgb,var(--bad) 35%,transparent)}
.trv-q{display:flex;gap:10px;align-items:flex-start;line-height:1.4}
.trv.ok .tn{background:var(--ok)}.trv.bad .tn{background:var(--bad)}
.trv-a{display:flex;gap:8px;align-items:flex-start;padding:8px 10px;border-radius:10px;font-size:14px;margin-left:36px}
.trv-a .ic{width:18px;height:18px}
.trv-a.good{background:var(--ok-soft);color:var(--ok)}.trv-a.good span{color:var(--ink)}
.trv-a.wrong{background:var(--bad-soft);color:var(--bad)}.trv-a.wrong span{color:var(--ink)}
.trv-a .x{font-weight:700;width:18px;text-align:center}
@media (max-width:640px){.trv-a{margin-left:0}}
.trv-a.wrong .x{color:var(--bad)}
.tick.auto:disabled{opacity:1;cursor:default;filter:saturate(1.1)}
/* dark mode: small colored badges get dark text on the brighter colors */
@media (prefers-color-scheme: dark){
  .tb.todo,.banner.warn .rem-ico,.banner.ok .rem-ico,.banner.lock .rem-ico{color:#141518}
}
/* "Invert colours" (accessibility): turn logos, photos, PDFs and signatures back so they look normal */
@media (inverted-colors: inverted){
  img,video,canvas,.sigpad,.viewer canvas,.dz-page{filter:invert(1) hue-rotate(180deg)}
}