/* SIEŤOVKA – výučbová hra o počítačových sieťach */
:root{
  --bg:#0e1419; --panel:#161e26; --panel2:#1d2832; --line:#2b3845;
  --text:#e4ebf2; --muted:#8fa0b0;
  --acc:#39c0d6;        /* hlavná – tyrkysová */
  --acc2:#f2b134;       /* zvýraznenie – žltá */
  --ok:#4caf6d; --bad:#e2574c; --warn:#e3922f;
  --utp:#6fa8dc; --fiber:#c58af9; --wifi:#4caf6d;
  --r:10px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--text);font:15px/1.55 "Segoe UI",system-ui,sans-serif}
h1,h2,h3{margin:0 0 .4em;font-weight:700;letter-spacing:.01em}
h1{font-size:24px} h2{font-size:18px} h3{font-size:15px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
a{color:var(--acc)}
button{font:inherit}
.muted{color:var(--muted)} .small{font-size:13px} .ok{color:var(--ok)} .bad{color:var(--bad)} .warn{color:var(--warn)}
.hidden{display:none !important}

/* ---------- lišta ---------- */
.top{display:flex;align-items:center;gap:16px;padding:10px 18px;background:#0a0f13;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.logo{font-weight:800;font-size:19px;letter-spacing:.14em;color:#fff;white-space:nowrap}
.logo b{color:var(--acc)}
.who{margin-left:auto;display:flex;gap:14px;align-items:center;font-size:13px;color:var(--muted);flex-wrap:wrap;justify-content:flex-end}
.who b{color:var(--acc2)}
.steps{display:flex;gap:6px}
.step{padding:5px 12px;border:1px solid var(--line);border-radius:20px;background:var(--panel);color:var(--muted);font-size:13px;cursor:pointer;white-space:nowrap}
.step.on{background:var(--acc);color:#06222a;border-color:var(--acc);font-weight:600}
.step.done::after{content:" ✓";color:var(--ok)}
.step.on.done::after{color:#06222a}
.step:disabled{opacity:.45;cursor:not-allowed}

/* ---------- rozloženie ---------- */
.wrap{max-width:1500px;margin:0 auto;padding:16px 18px 60px}
.lay{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:16px;align-items:start}
.lay.wide{grid-template-columns:260px minmax(0,1fr) 330px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;margin-bottom:14px}
.card.tight{padding:10px 12px}
.card h2{display:flex;align-items:center;gap:8px}
.side{position:sticky;top:64px}

/* ---------- tlačidlá ---------- */
.btn{background:var(--acc);color:#06222a;border:0;border-radius:8px;padding:9px 16px;font-weight:600;cursor:pointer}
.btn:hover{filter:brightness(1.1)}
.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--acc)}
.btn.sm{padding:5px 11px;font-size:13px}
.btn.wide{width:100%;margin-top:6px}
.btn.go{background:var(--acc2);color:#2a1f05}
.btn.danger{background:transparent;border:1px solid rgba(226,87,76,.5);color:var(--bad)}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* ---------- plocha so sieťou ---------- */
.board{position:relative;background:
   linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px) 0 0/28px 28px,
   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px) 0 0/28px 28px,
   #0b1116;
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;touch-action:none;user-select:none}
.board svg.links{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.board svg.links .ln{stroke-width:3.5;fill:none}
.board svg.links .ln.utp{stroke:var(--utp)}
.board svg.links .ln.fiber{stroke:var(--fiber)}
.board svg.links .ln.wifi{stroke:var(--wifi);stroke-dasharray:3 7;stroke-width:2.5}
.board svg.links .ln.down{stroke:var(--bad);stroke-dasharray:7 6}
.board svg.links .ln.hit{stroke-width:16;stroke:transparent;pointer-events:stroke;cursor:pointer}
.board svg.links .lbl{fill:var(--muted);font-size:11px;text-anchor:middle;paint-order:stroke;stroke:#0b1116;stroke-width:4}
.board svg.links .pk{fill:var(--acc2)}
.board svg.links .pk.bad{fill:var(--bad)}
/* zóny sú len popis plochy – nesmú chytať kliknutia, inak sa do nich nedá nič položiť */
.board .zone{position:absolute;border:1px dashed rgba(143,160,176,.45);border-radius:10px;background:rgba(143,160,176,.05);pointer-events:none}
.board .zone span{position:absolute;top:-10px;left:10px;background:#0b1116;padding:0 8px;font-size:12px;color:var(--muted)}

.node{position:absolute;transform:translate(-50%,-50%);width:88px;text-align:center;cursor:pointer;z-index:2}
.node .ic{width:54px;height:54px;margin:0 auto;border-radius:12px;background:var(--panel2);border:2px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:26px;position:relative}
.node .nm{font-size:12px;margin-top:3px;line-height:1.25;word-break:break-word}
.node .ip{font:11px/1.3 ui-monospace,monospace;color:var(--acc)}
.node.up .ic{border-color:rgba(76,175,109,.75)}
.node.down .ic{border-color:var(--bad);background:#2a1715}
.node.sel .ic{border-color:var(--acc2);box-shadow:0 0 0 3px rgba(242,177,52,.25)}
.node.drag{z-index:5;cursor:grabbing}
.node .led{position:absolute;right:-5px;top:-5px;width:13px;height:13px;border-radius:50%;background:var(--muted);border:2px solid #0b1116}
.node.up .led{background:var(--ok)} .node.down .led{background:var(--bad)}
.node .tag{position:absolute;left:50%;transform:translateX(-50%);bottom:-6px;font-size:10px;background:var(--acc2);color:#2a1f05;border-radius:8px;padding:0 6px;font-weight:700}
.board.linking .node:hover .ic{border-color:var(--acc2)}
.board.placing{cursor:crosshair}

/* paleta */
.pal{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.pal button{display:flex;flex-direction:column;align-items:center;gap:2px;background:var(--panel2);border:1px solid var(--line);
  border-radius:8px;padding:8px 4px;color:var(--text);cursor:pointer;font-size:11px;line-height:1.2}
.pal button:hover{border-color:var(--acc)}
.pal button.on{border-color:var(--acc2);background:#2a2415}
.pal button i{font-style:normal;font-size:22px}
.tools{display:flex;flex-direction:column;gap:6px}
.tool{display:flex;align-items:center;gap:8px;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:8px 10px;color:var(--text);cursor:pointer;text-align:left;width:100%}
.tool:hover{border-color:var(--acc)}
.tool.on{border-color:var(--acc2);background:#2a2415}
.tool .sw{width:24px;height:4px;border-radius:2px;flex:0 0 24px}
.tool .sw.utp{background:var(--utp)} .tool .sw.fiber{background:var(--fiber)} .tool .sw.wifi{background:var(--wifi)}
.tool small{display:block;color:var(--muted);font-size:11px}

/* ---------- zadanie / ciele ---------- */
.goals{list-style:none;padding:0;margin:0}
.goals li{display:flex;gap:8px;padding:5px 0;border-bottom:1px solid rgba(43,56,69,.6);font-size:14px}
.goals li:last-child{border:0}
.goals .mk{width:20px;flex:0 0 20px;text-align:center}
.goals li.done{color:var(--ok)}
.goals li.fail .mk{color:var(--bad)}

/* ---------- hovor / chat ---------- */
.chat{max-height:330px;overflow:auto;display:flex;flex-direction:column;gap:8px;padding-right:4px}
.msg{max-width:88%;padding:8px 12px;border-radius:12px;font-size:14px;animation:pop .18s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(6px)}}
.msg.them{background:var(--panel2);border:1px solid var(--line);border-bottom-left-radius:3px;align-self:flex-start}
.msg.me{background:#1c3a44;border:1px solid #27525f;border-bottom-right-radius:3px;align-self:flex-end}
.msg .nm{font-size:11px;color:var(--muted);display:block;margin-bottom:2px}
.opts{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.opts button{text-align:left;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:8px 11px;color:var(--text);cursor:pointer;font-size:14px}
.opts button:hover{border-color:var(--acc);background:#1b2730}
.ticket{display:flex;gap:10px;align-items:flex-start;background:var(--panel2);border-left:3px solid var(--acc2);border-radius:6px;padding:9px 12px;margin-bottom:10px;font-size:14px}

/* ---------- tabuľky ---------- */
table.t{width:100%;border-collapse:collapse}
table.t th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;padding:6px 8px;border-bottom:1px solid var(--line)}
table.t td{padding:6px 8px;border-bottom:1px solid rgba(43,56,69,.55);vertical-align:middle}
table.t input{width:100%;min-width:110px}
input,select{background:#0b1116;color:var(--text);border:1px solid var(--line);border-radius:7px;padding:7px 9px;font:inherit}
input:focus,select:focus{outline:2px solid rgba(57,192,214,.45);border-color:var(--acc)}
input.mono{font-family:ui-monospace,monospace}
input.bad{border-color:var(--bad);background:#2a1715}
input.good{border-color:var(--ok)}
label.f{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);margin-bottom:9px}

/* ---------- hlášky ---------- */
.note{border-radius:8px;padding:9px 12px;margin:9px 0;font-size:14px;border:1px solid}
.note.i{background:rgba(57,192,214,.09);border-color:rgba(57,192,214,.35)}
.note.g{background:rgba(76,175,109,.1);border-color:rgba(76,175,109,.4)}
.note.b{background:rgba(226,87,76,.1);border-color:rgba(226,87,76,.4)}
.note.w{background:rgba(227,146,47,.1);border-color:rgba(227,146,47,.4)}
.note b{display:block;margin-bottom:2px}
.log{max-height:220px;overflow:auto;font:12.5px/1.6 ui-monospace,monospace;background:#0b1116;border:1px solid var(--line);border-radius:8px;padding:9px 11px}
.log div{padding:1px 0;border-bottom:1px solid rgba(43,56,69,.4)}
.log .ok{color:var(--ok)} .log .bad{color:var(--bad)}
.pill{display:inline-block;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:1px 9px;font-size:12px}
.pill.ok{color:var(--ok);border-color:rgba(76,175,109,.4)}
.pill.bad{color:var(--bad);border-color:rgba(226,87,76,.4)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:3px 14px;font-size:13.5px}
.kv span{color:var(--muted)}

/* skóre */
.score{display:flex;gap:10px;align-items:baseline}
.score b{font-size:30px;color:var(--acc2)}
.stars{font-size:22px;letter-spacing:2px;color:var(--acc2)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(5,9,12,.78);display:flex;align-items:center;justify-content:center;z-index:60;padding:18px}
.modal .box{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 26px;max-width:600px;width:100%;max-height:88vh;overflow:auto}
.modal h2{font-size:21px}

/* úvod */
.intro{max-width:760px;margin:40px auto}
.intro .lvl{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line)}
.intro .lvl i{font-style:normal;font-size:26px;width:40px;text-align:center}
.theory{font-size:14px}
.theory li{margin:4px 0}
.theory code{background:var(--panel2);padding:1px 5px;border-radius:4px;font-size:12.5px}

@media(max-width:1200px){
  /* minmax(0,1fr) je dôležité – inak sa stĺpec roztiahne na šírku mapy a roluje celá stránka */
  .lay,.lay.wide{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
}
@media(max-width:700px){
  .wrap{padding:10px}
  .top{gap:8px;padding:8px 10px}
  .logo{font-size:15px;letter-spacing:.06em}
  .step{padding:4px 9px;font-size:12px}
  .pal{grid-template-columns:1fr 1fr 1fr}
  /* na telefóne ide zoznam úrovní do druhého riadku a dá sa posúvať prstom */
  .top{flex-wrap:wrap}
  .steps{order:3;width:100%;overflow-x:auto;padding-bottom:2px}
  .who{margin-left:auto}
  .intro{margin:10px auto}
  .board{max-width:100%}
  .grid2,.grid3{grid-template-columns:1fr}
  h1{font-size:20px}
}
@media print{.top,.btn{display:none}}