:root{
  --bg:#f6f8fc; --ink:#1f2a44; --muted:#6b7690; --brand:#5b6ef5; --brand-d:#4553d6;
  --accent:#ff9f43; --ok:#2bb673; --err:#e0526a; --card:#fff; --line:#e6eaf3; --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:'Segoe UI',system-ui,Arial,sans-serif;line-height:1.55;}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
h1{font-size:1.9rem;margin:.2em 0 .5em} h2{font-size:1.3rem}
.muted{color:var(--muted)} .lead{font-size:1.15rem;color:#42506e}
.mt{margin-top:22px}

/* Header */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.logo{font-size:1.35rem;font-weight:800;color:var(--ink)}
.logo b{color:var(--brand)} .logo span{letter-spacing:-.5px}
.mainnav{display:flex;gap:16px;margin-left:10px;flex:1}
.mainnav a{color:var(--ink);font-weight:600;font-size:.98rem}
.usernav{display:flex;align-items:center;gap:8px}
.who{color:var(--muted);font-size:.9rem;margin:0 4px}
.langsw{display:inline-flex;gap:2px;margin-right:4px;font-size:.82rem;font-weight:700}
.langsw a{padding:4px 7px;border-radius:6px;color:var(--muted)}
.langsw a.on{background:var(--brand);color:#fff}
.check{font-weight:500;font-size:.9rem;display:flex;gap:8px;align-items:center;margin:10px 0}
.check input{width:auto;margin:0}
.pill{padding:7px 13px;border-radius:999px;background:#eef1fb;color:var(--brand-d);font-weight:700;font-size:.88rem}
.pill.primary{background:var(--brand);color:#fff} .pill.ghost{background:#f0f2f7;color:var(--muted)}
.pill:hover{text-decoration:none;filter:brightness(.97)}

/* Buttons */
.btn{display:inline-block;padding:10px 18px;border-radius:10px;background:#eef1fb;color:var(--brand-d);
  font-weight:700;border:none;cursor:pointer;font-size:.95rem}
.btn:hover{filter:brightness(.96);text-decoration:none}
.btn.primary{background:var(--brand);color:#fff}
.btn.tiny{padding:5px 10px;font-size:.82rem}
.btn.ghost{background:transparent;color:var(--muted)}

/* Hero */
.hero{display:flex;gap:30px;align-items:center;padding:34px 0 10px}
.hero-text{flex:1.4} .hero h1{font-size:2.4rem;line-height:1.15}
.hero-art{flex:1;font-size:4.4rem;text-align:center;filter:drop-shadow(0 6px 12px #0001)}
.cta-row{display:flex;gap:12px;margin-top:18px}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:26px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card.link{display:block;color:var(--ink)} .card.link:hover{text-decoration:none;box-shadow:0 6px 20px #0000000d}
.card-ic{font-size:2rem} .card h3{margin:.4em 0 .2em}
.card .big{font-size:2rem;font-weight:800;color:var(--brand)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Forms */
.form label{display:block;margin:10px 0;font-weight:600;font-size:.92rem}
.form input,.form select,.form textarea{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:9px;font-size:1rem;font-family:inherit;background:#fff;margin-top:4px;font-weight:400}
.form.inline{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.form.inline label{flex:1;margin:0} .form.inline .btn{white-space:nowrap}
.rowform{display:inline} .rowform select{padding:4px 8px;border-radius:7px}

/* Tables */
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;margin-top:16px}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:.94rem}
.tbl th{background:#f0f3fb;font-size:.82rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.badge{display:inline-block;background:#eef1fb;color:var(--brand-d);border-radius:6px;
  padding:2px 8px;font-size:.78rem;font-weight:700}

.notice{padding:12px 16px;border-radius:10px;margin:14px 0;font-weight:600}
.notice.ok{background:#e5f7ee;color:#1c7a4d} .notice.err{background:#fdeaee;color:#b3324a}
.crumb{color:var(--muted);font-size:.88rem} .crumb a{color:var(--muted)}
.row-between{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.prose ul,.prose ol{padding-left:22px} .prose li{margin:5px 0}
.list{list-style:none;padding:0} .list li{padding:7px 0;border-bottom:1px solid var(--line)}
.auth-box{max-width:400px;margin:40px auto}
.doc-text{white-space:pre-wrap;font-family:ui-monospace,Consolas,monospace;font-size:.82rem;
  background:#fbfcfe;border:1px solid var(--line);border-radius:10px;padding:14px;max-height:460px;overflow:auto}
.centers{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
.center{background:#fbfcfe;border:1px solid var(--line);border-radius:10px;padding:12px}
.center span{display:block;color:var(--muted);font-size:.88rem;margin-top:4px}
.tk-entry{padding:12px 0} .tk-entry p{margin:4px 0}
/* diagnostika — dovednostní pruhy */
.skill-list{display:flex;flex-direction:column;gap:10px}
.skill-row{display:grid;grid-template-columns:200px 1fr auto;gap:12px;align-items:center}
.skill-name{font-weight:700;font-size:.92rem}
.skill-bar{height:12px;background:#eef1f8;border-radius:999px;overflow:hidden}
.skill-bar span{display:block;height:100%;background:linear-gradient(90deg,#5b6ef5,#8a76f6);border-radius:999px}
.skill-val{font-size:.85rem;color:var(--muted);white-space:nowrap}
@media(max-width:640px){.skill-row{grid-template-columns:1fr;gap:4px}}
/* tickety */
.st-badge{display:inline-block;padding:3px 12px;border-radius:999px;font-size:.76rem;font-weight:800}
.st-open{background:#eaf1ff;color:#3552c9}
.st-in_progress{background:#fff2df;color:#b26a00}
.st-resolved{background:#e5f7ee;color:#1c7a4d}
.st-closed{background:#eef0f4;color:#6b7690}
.ticket-thread{display:flex;flex-direction:column;gap:12px}
.tk-msg{border:1px solid var(--line);border-radius:12px;padding:12px 14px;max-width:88%}
.tk-msg.from-teacher{align-self:flex-start;background:#f7f9ff}
.tk-msg.from-admin{align-self:flex-end;background:#eef7f1;border-color:#cfead9}
.tk-msg-head{font-weight:700;font-size:.86rem;display:flex;gap:8px;align-items:center;margin-bottom:5px}
.tk-msg-body{white-space:pre-wrap}
.tk-status{text-align:center;color:var(--muted);font-size:.85rem;padding:4px}
/* docházka — matice */
.att-matrix td,.att-matrix th{text-align:center}
.att-matrix td:first-child,.att-matrix th:first-child{text-align:left}
.att-cell{font-weight:800}
.att-present{color:#2bb673}
.att-absent{color:#e0526a}
.att-none{color:#c2c9d6}
.att-foot td{background:#f0f3fb;font-weight:700;color:var(--muted)}

/* Games library — filtr přes vizuální dlaždice typů */
.type-chips{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.type-chip{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:88px;
  padding:12px 10px;border-radius:14px;background:var(--card);border:1.5px solid var(--line);
  color:var(--ink);font-weight:700;font-size:.82rem;cursor:pointer;transition:.14s;text-align:center}
.type-chip .ic{font-size:1.7rem;line-height:1}
.type-chip:hover{border-color:var(--brand);transform:translateY(-2px);text-decoration:none}
.type-chip.on{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px #5b6ef540}
.theme-filter{margin:0 0 20px}
.theme-filter select{padding:10px 14px;border:1.5px solid var(--line);border-radius:12px;font-size:.95rem;background:#fff;min-width:220px}

.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px;align-items:stretch}
.game-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;
  display:flex;flex-direction:column;text-align:center;transition:.16s;box-shadow:0 2px 8px #0b1a4708}
.game-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px #0b1a4718;border-color:#d7def6}
.game-ic{width:76px;height:76px;margin:2px auto 12px;border-radius:20px;display:flex;align-items:center;
  justify-content:center;font-size:2.5rem;background:linear-gradient(135deg,#eef1fb,#e5e9fb)}
.game-type-badge{display:inline-block;align-self:center;background:#eef1fb;color:var(--brand-d);
  border-radius:999px;padding:3px 12px;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.4px}
.game-card h3{margin:.5em 0 .2em;font-size:1.12rem;line-height:1.25;min-height:2.5em;
  display:flex;align-items:center;justify-content:center}
.game-card .g-meta{color:var(--muted);font-size:.86rem;margin:0 0 14px}
.game-actions{display:flex;gap:8px;justify-content:center;margin-top:auto}
.game-actions .btn{flex:1}
.board-title{text-align:center;font-size:2rem}

/* Footer */
.site-footer{margin-top:50px;padding:24px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}

@media(max-width:820px){
  .cards,.grid2{grid-template-columns:1fr}
  .hero{flex-direction:column} .mainnav{display:none}
}