/* ==========================================================================
   Knight School — stylesheet
   Layout: top bar + views. Board views are two columns (board | panel).
   ========================================================================== */

:root{
  --bg:#0f1216;
  --bg2:#141922;
  --panel:#1a2029;
  --panel2:#212936;
  --panel3:#2a3444;
  --line:#2d3844;
  --text:#e9eef5;
  --dim:#94a3b4;
  --dim2:#6c7a8c;
  --accent:#f0b429;        /* gold */
  --accent2:#22c55e;       /* good green */
  --bad:#ef4444;           /* error red */
  --warn:#f59e0b;
  --blue:#3b82f6;
  --purple:#a855f7;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --light-sq:#eeeed4;
  --dark-sq:#769656;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:
    radial-gradient(1200px 600px at 15% -10%, #1c2534 0%, transparent 60%),
    radial-gradient(900px 500px at 100% 0%, #1a2a24 0%, transparent 55%),
    var(--bg);
  color:var(--text);
  font:15px/1.6 ui-sans-serif,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25}
a{color:var(--accent)}
button{font:inherit}
.accent{color:var(--accent)}
.good{color:var(--accent2)}
.bad{color:var(--bad)}
.dim{color:var(--dim)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

#app{display:flex;flex-direction:column;min-height:100%}

/* ------------------------------- top bar -------------------------------- */
.topbar{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  padding:10px 18px;background:rgba(20,25,34,.92);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40;
  backdrop-filter:blur(8px);
}
.brand{display:flex;align-items:center;gap:11px;min-width:210px}
.brand .logo{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:26px;
  background:linear-gradient(145deg,#2b3648,#1b2230);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brandtext h1{font-size:17px;letter-spacing:.2px}
.brandtext .tag{margin:0;font-size:11.5px;color:var(--dim2)}

.tabs{display:flex;gap:6px;flex-wrap:wrap;flex:1}
.tab{
  background:transparent;border:1px solid transparent;color:var(--dim);
  padding:8px 13px;border-radius:10px;cursor:pointer;font-size:14px;font-weight:500;
  transition:.15s;white-space:nowrap;
}
.tab:hover{color:var(--text);background:var(--panel2)}
.tab.active{color:#12161d;background:var(--accent);border-color:var(--accent);font-weight:700}
.topTools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.pill{
  font-size:12px;padding:5px 10px;border-radius:999px;border:1px solid var(--line);
  background:var(--panel2);color:var(--dim);white-space:nowrap;
}
.pill-xp{color:var(--accent);border-color:#42381c;background:#241f11}
.pill-ok{color:#8ff0b0;border-color:#1f5c38;background:#122a1d}
.pill-bad{color:#ffb3b3;border-color:#6b2626;background:#2b1414}
.iconbtn{
  background:var(--panel2);border:1px solid var(--line);color:var(--text);
  width:34px;height:34px;border-radius:10px;cursor:pointer;font-size:15px;line-height:1;
}
.iconbtn:hover{border-color:var(--accent);color:var(--accent)}
.iconbtn.off{opacity:.45}

/* ------------------------------- views --------------------------------- */
#views{flex:1;display:flex;flex-direction:column}
.view{display:none;flex:1;padding:18px;gap:18px}
.view.active{display:grid;grid-template-columns:minmax(320px,1fr) minmax(360px,520px);align-items:start}
.view.single.active{display:block}
@media (max-width:1080px){
  .view.active{grid-template-columns:1fr}
}

.foot{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:10px 18px;border-top:1px solid var(--line);color:var(--dim2);font-size:12px;
  background:rgba(20,25,34,.6);
}

/* ------------------------------- home ---------------------------------- */
.home-hero{display:grid;grid-template-columns:1.35fr 1fr;gap:22px}
@media (max-width:900px){.home-hero{grid-template-columns:1fr}}
#view-home.active{display:block}
.hero-text h2{font-size:26px}
.lede{color:var(--dim);font-size:15.5px;max-width:62ch}
.quickstart{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0}
.bigbtn{
  background:linear-gradient(145deg,#f7c948,#e0a112);color:#1a1405;border:none;
  padding:12px 18px;border-radius:12px;font-weight:700;cursor:pointer;font-size:15px;
  box-shadow:0 6px 18px rgba(240,180,41,.18);
}
.bigbtn:hover{filter:brightness(1.06)}
.bigbtn.alt{background:linear-gradient(145deg,#2ec768,#1f9a4f);color:#04180c;box-shadow:0 6px 18px rgba(34,197,94,.18)}
.tipbox{
  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);
  padding:12px 14px;border-radius:10px;color:var(--dim);font-size:14px;max-width:70ch;
}
.hero-stats{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:start;
}
.stat{background:var(--panel2);border:1px solid var(--line);border-radius:11px;padding:11px 13px}
.stat .n{font-size:23px;font-weight:800;color:var(--accent)}
.stat .l{font-size:12px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
h3.sect{margin:26px 0 12px;font-size:17px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;cursor:pointer;transition:.15s;position:relative;overflow:hidden;
}
.card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.card .icon{font-size:24px}
.card h4{margin:8px 0 4px;font-size:15px}
.card p{margin:0;color:var(--dim);font-size:13px}
.card .meta{margin-top:9px;font-size:12px;color:var(--dim2);display:flex;gap:10px;flex-wrap:wrap}
.card .bar{height:5px;background:var(--panel3);border-radius:99px;margin-top:10px;overflow:hidden}
.card .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent))}
.card.done{border-color:#245c3c}
.card .checked{position:absolute;top:10px;right:12px;color:var(--accent2);font-size:17px}

/* ---------------------------- board column ------------------------------ */
.board-col{display:flex;flex-direction:column;gap:12px;max-width:640px;width:100%;justify-self:center}
.board-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.board-title{font-size:15px;font-weight:700}
.board-sub{font-size:12.5px;color:var(--dim)}

.board-row{display:flex;gap:10px;align-items:stretch}
.evalbar{
  width:22px;border-radius:7px;overflow:hidden;background:#101418;border:1px solid var(--line);
  display:flex;flex-direction:column-reverse;position:relative;flex:0 0 22px;
}
.evalbar .white{background:linear-gradient(180deg,#fdfdf5,#d9dcd0);height:50%;transition:height .45s ease}
.evalbar .black{background:linear-gradient(180deg,#2b3441,#171d26);flex:1}
.evalbar .num{
  position:absolute;left:0;right:0;bottom:3px;text-align:center;font-size:9.5px;color:#0b0e12;
  font-weight:800;mix-blend-mode:difference;
}
.board-holder{position:relative;flex:1;min-width:0;border-radius:8px}
#board-lessons,#board-puzzles,#board-play,#board-analyse{width:100%}
.board-holder .arrowlayer{
  position:absolute;inset:0;pointer-events:none;z-index:12;overflow:visible;
}
.board-holder.drawwrap{cursor:crosshair}
.board-holder .coord{position:absolute;font-size:10px;color:rgba(255,255,255,.5)}
.piece-417db{border-radius:4px}

/* coach bubble */
.coach{
  display:flex;gap:11px;align-items:flex-start;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;
}
.coach .face{font-size:26px;line-height:1}
.coach .say{flex:1;min-width:0}
.coach .say .who{font-size:11.5px;text-transform:uppercase;letter-spacing:.7px;color:var(--dim2)}
.coach .say .txt{font-size:14.5px}
.coach.ok{border-color:#22593a;background:#132a1e}
.coach.bad{border-color:#6b2626;background:#2a1414}
.coach.warn{border-color:#5c4415;background:#2a2211}
.coach.think{border-color:#1f3d63;background:#111d2c}

/* controls */
.ctrlrow{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.cbtn{
  background:var(--panel2);border:1px solid var(--line);color:var(--text);
  padding:8px 12px;border-radius:10px;cursor:pointer;font-size:13.5px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;transition:.14s
}
.cbtn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.cbtn:disabled{opacity:.4;cursor:not-allowed}
.cbtn.primary{background:linear-gradient(145deg,#f7c948,#e0a112);color:#1a1405;border:none}
.cbtn.green{background:linear-gradient(145deg,#2ec768,#1f9a4f);color:#04180c;border:none}
.cbtn.ghost{background:transparent}
.cbtn.small{padding:6px 9px;font-size:12.5px}

/* move list */
.movelist{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:8px;max-height:190px;overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;
}
.movelist .row{display:grid;grid-template-columns:34px 1fr 1fr;gap:4px}
.movelist .no{color:var(--dim2);text-align:right;padding:2px 4px}
.movelist .mv{
  padding:2px 6px;border-radius:6px;cursor:pointer;
}
.movelist .mv:hover{background:var(--panel3)}
.movelist .mv.cur{background:var(--accent);color:#141005;font-weight:700}
.movelist .mv.bad{color:#ff9d9d;text-decoration:underline dotted}
.movelist .mv.good{color:#9ff0bb}
.movelist .empty{color:var(--dim2);padding:6px 8px}
.mlist-head{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 6px}
.mlist-head .t{font-size:12px;text-transform:uppercase;letter-spacing:.7px;color:var(--dim2)}

/* nav steps */
.stepnav{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.stepnav .pos{font-size:12.5px;color:var(--dim)}

/* ------------------------------- panels -------------------------------- */
.panel-col{display:flex;flex-direction:column;gap:14px;min-width:0}
.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:15px 16px;
}
.panel h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.panel p{margin:0 0 10px}
.panel .lead{color:var(--dim);font-size:14px}
.panel ul{margin:8px 0 10px;padding-left:20px}
.panel li{margin-bottom:5px}
.panel ol{margin:8px 0 10px;padding-left:20px}
.kbd{
  background:#0d1116;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;
  padding:1px 6px;font-family:ui-monospace,Menlo,monospace;font-size:12.5px;
}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.chip{
  font-size:12px;padding:3px 9px;border-radius:999px;background:var(--panel2);
  border:1px solid var(--line);color:var(--dim);
}
.chip.g{color:#9ff0bb;border-color:#22593a}
.chip.r{color:#ffadad;border-color:#6b2626}
.chip.b{color:#a9cdff;border-color:#254a7a}
.chip.y{color:#ffdd8f;border-color:#5c4415}

.locked{opacity:.5;pointer-events:none}

/* steps list */
.steplist,.gamelist{display:flex;flex-direction:column;gap:4px;max-height:300px;overflow:auto}
.steplist button,.gamelist button{
  text-align:left;background:transparent;border:1px solid transparent;color:var(--dim);
  padding:7px 9px;border-radius:9px;cursor:pointer;font-size:13.5px;display:flex;gap:9px;align-items:center
}
.steplist button:hover,.gamelist button:hover{background:var(--panel2);color:var(--text)}
.steplist button.cur,.gamelist button.cur{background:var(--panel3);color:var(--text);border-color:var(--accent)}
.steplist button .n,.gamelist button .n{
  width:22px;height:22px;border-radius:50%;background:var(--panel3);display:grid;place-items:center;
  font-size:11.5px;flex:0 0 22px
}
.steplist button.cur .n,.gamelist button.cur .n{background:var(--accent);color:#191307;font-weight:800}
.steplist button.seen .n,.gamelist button.seen .n{background:#1e4a33;color:#b8f5cf}

/* puzzle grid */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:8px}
.pcell{
  aspect-ratio:1/1;border-radius:11px;background:var(--panel2);border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;
  font-size:12px;color:var(--dim);position:relative;transition:.14s
}
.pcell:hover{border-color:var(--accent);transform:translateY(-2px)}
.pcell .big{font-size:19px}
.pcell.solved{background:#153226;border-color:#2b6b46;color:#bdf0d1}
.pcell.cur{border-color:var(--accent);box-shadow:0 0 0 2px rgba(240,180,41,.25)}
.pcell .star{position:absolute;top:4px;right:5px;font-size:10px;color:var(--accent)}

/* filters */
.filters{display:flex;gap:7px;flex-wrap:wrap}
.filters button{
  background:var(--panel2);border:1px solid var(--line);color:var(--dim);border-radius:999px;
  padding:6px 12px;font-size:12.5px;cursor:pointer
}
.filters button.on{background:var(--accent);color:#191307;border-color:var(--accent);font-weight:700}

/* quality badges */
.qbadge{
  display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:700;
  padding:3px 10px;border-radius:999px;border:1px solid var(--line);background:var(--panel2)
}
.q-best{color:#0b2f1b;background:#4ade80;border-color:#4ade80}
.q-excellent{color:#0b2f1b;background:#86efac;border-color:#86efac}
.q-good{color:#0b2f1b;background:#d9f99d;border-color:#d9f99d}
.q-inaccuracy{color:#3a2a05;background:#fcd34d;border-color:#fcd34d}
.q-mistake{color:#3a1f05;background:#fb923c;border-color:#fb923c}
.q-blunder{color:#fff;background:#ef4444;border-color:#ef4444}

/* eval text */
.evaltxt{font-family:ui-monospace,Menlo,monospace;font-weight:800;font-size:13px}
.evaltxt.plus{color:#9ff0bb}
.evaltxt.minus{color:#ffadad}

/* progress page */
#view-progress.active{display:block}
.progress-wrap{max-width:1050px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:12px}
.badge{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:13px;text-align:center;
  opacity:.45
}
.badge.on{opacity:1;border-color:var(--accent);background:linear-gradient(180deg,#241f11,#1a2029)}
.badge .bi{font-size:28px}
.badge .bn{font-weight:700;font-size:13.5px;margin-top:5px}
.badge .bd{font-size:11.5px;color:var(--dim)}
.catbars{display:flex;flex-direction:column;gap:9px}
.catbar{display:grid;grid-template-columns:150px 1fr 62px;gap:10px;align-items:center;font-size:13.5px}
.catbar .track{height:9px;background:var(--panel3);border-radius:99px;overflow:hidden}
.catbar .track i{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent))}
.hist{display:flex;gap:3px;align-items:flex-end;height:60px}
.hist i{width:12px;background:var(--panel3);border-radius:3px}

/* toasts */
.toasts{position:fixed;right:16px;bottom:16px;display:flex;flex-direction:column;gap:9px;z-index:100;pointer-events:none}
.toast{
  background:#1b2230;border:1px solid var(--line);border-left:3px solid var(--accent);
  padding:10px 14px;border-radius:11px;box-shadow:var(--shadow);font-size:13.5px;max-width:330px;
  animation:slidein .25s ease
}
.toast.good{border-left-color:var(--accent2)}
.toast.bad{border-left-color:var(--bad)}
@keyframes slidein{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}

/* celebration */
.celebrate{
  position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;z-index:20;
}
.celebrate .burst{
  background:rgba(12,20,15,.87);border:1px solid #2b6b46;border-radius:16px;padding:14px 24px;
  font-size:20px;font-weight:800;color:#a7f3c9;animation:pop .45s ease
}
@keyframes pop{0%{transform:scale(.6);opacity:0}70%{transform:scale(1.06)}100%{transform:scale(1);opacity:1}}

/* setup / forms */
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:10px}
.field label{font-size:12px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
input[type=text],select,textarea{
  background:var(--panel2);border:1px solid var(--line);color:var(--text);border-radius:9px;
  padding:9px 11px;font:inherit;width:100%
}
textarea{font-family:ui-monospace,Menlo,monospace;font-size:12.5px;resize:vertical;min-height:76px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:520px){.grid2{grid-template-columns:1fr}}

.hintline{font-size:12.5px;color:var(--dim2)}
.spinner{
  width:14px;height:14px;border:2px solid rgba(255,255,255,.25);border-top-color:var(--accent);
  border-radius:50%;display:inline-block;animation:spin .8s linear infinite;vertical-align:-2px
}
@keyframes spin{to{transform:rotate(360deg)}}

/* board coordinates tweak: chessboard.js puts labels outside when showNotation */
.square-55d63{transition:none}

/* arrows/highlight layer sizing */
.arrowlayer svg{display:block;width:100%;height:100%}

/* small screens */
@media (max-width:600px){
  .topbar{gap:10px;padding:9px 12px}
  .brandtext .tag{display:none}
  .view{padding:12px}
  .tab span{display:none}
  .movelist{max-height:140px}
}

/* Motiv-Überschriften in der Rätselauswahl */
.motifhead{
  grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:10px;
  margin:14px 0 2px;padding:7px 10px;background:var(--panel2);border:1px solid var(--line);
  border-left:3px solid var(--accent);border-radius:9px;font-size:13.5px;
}
.motifhead .dim{font-size:12px}
.pgrid .pcell span:last-child{font-size:11px;color:var(--dim2)}

/* Partie-Durchsicht: kommentierte Zugliste */
.study{display:flex;flex-direction:column;gap:2px;max-height:420px;overflow:auto}
.studyrow{display:grid;grid-template-columns:34px 62px 1fr;gap:8px;padding:5px 7px;border-radius:8px;
  border:1px solid transparent;cursor:pointer;align-items:start}
.studyrow:hover{background:var(--panel2)}
.studyrow.cur{background:var(--panel3);border-color:var(--accent)}
.studyrow.locked{opacity:.55;cursor:default}
.studyrow .mvno{color:var(--dim2);font-family:ui-monospace,Menlo,monospace;font-size:12.5px;text-align:right}
.studyrow .san{font-family:ui-monospace,Menlo,monospace;font-weight:700;font-size:13px;color:var(--text)}
.studyrow .cmt{font-size:13px;color:var(--dim)}
.lockednote{margin:8px 0;padding:8px 10px;border-radius:9px;background:#2a2211;border:1px solid #5c4415;
  color:#ffdd8f;font-size:12.5px}
.movelist .mv.locked{color:var(--dim2);cursor:default}