/* Piškvorky online - styl v duchu dama.nezbeda.eu / rezervace.nezbeda.eu
   (karty, proměnné). Deska je canvas - barvy kamenů jsou proto tady
   jako proměnné a JS si je přečte (getComputedStyle). */
:root {
  /* jen světlý režim - jinak auto-dark v prohlížeči přebareví kameny */
  color-scheme: only light;
  --bg: #1f271f;                /* hodně tmavá zeleno-uhelková - karty a kameny kontrastují */
  --bg-2: #2b352b;              /* světlejší odstín pro jemný přechod */
  --bg-text: #e8ece4;           /* světlý text přímo na tmavém pozadí */
  --bg-muted: #9fb0a0;          /* tlumený text na tmavém pozadí */
  --card: #ffffff;
  --ink: #2b2a26;
  --muted: #8a8578;
  --line: #e4ded2;
  --accent: #2f7d4f;
  --accent-dark: #256641;
  --danger: #b23b2e;
  --warn: #a06a00;
  --board: #f0dfc0;             /* podklad desky (světlé pole z dámy) */
  --grid: rgba(169, 125, 85, .45);   /* mřížka z tmavého pole dámy */
  --grid-bold: rgba(169, 125, 85, .75);
  --stone-red: #c2331f;         /* červená kolečka */
  --stone-red-hi: #ff7a5e;
  --stone-blue: #2b56c4;        /* modré křížky */
  --stone-blue-hi: #7d9bff;
  --radius: 12px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%) fixed;
  color: var(--ink);
  min-height: 100vh;
}

/* ---------- hlavička ---------- */
.top {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  background: #26302a;
  border-bottom: 1px solid #151c16;
}
.logo { font-weight: 700; letter-spacing: .02em; color: var(--bg-text); }
.spacer { flex: 1; }
#me { color: var(--bg-muted); }
#me strong { color: var(--bg-text); }

/* ---------- prvky ---------- */
main { max-width: 980px; margin: 0 auto; padding: 20px 14px 60px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.card.narrow { max-width: 420px; margin: 8vh auto 0; }
.card h1 { margin: 0 0 6px; font-size: 1.5rem; }
.card h2 { margin: 0 0 10px; font-size: 1.05rem; }
.muted { color: var(--muted); }
.err { color: var(--danger); font-weight: 600; }
.list { list-style: none; margin: 0 0 12px; padding: 0; max-height: 320px; overflow: auto; }
.list li {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 4px; border-bottom: 1px solid var(--line);
}
.list li:last-child { border-bottom: 0; }
.list .grow { flex: 1; }
.badge {
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  border-radius: 999px; padding: 2px 8px; text-transform: uppercase;
}
.badge.on  { background: #e2f2e7; color: var(--accent-dark); }
.badge.off { background: #efece4; color: var(--muted); }
.badge.play { background: #e8ecfa; color: #3b4fa0; }
.badge.wait { background: #fbf1dc; color: var(--warn); }

button {
  font: inherit; cursor: pointer;
  background: var(--accent); color: #fff; border: 0;
  border-radius: 9px; padding: 9px 16px; font-weight: 600;
}
button:hover { background: var(--accent-dark); }
button.danger { background: var(--danger); }
button.danger:hover { background: #8f2f24; }
button.link {
  background: none; color: var(--bg-muted); padding: 4px 6px; font-weight: 500;
}
button.link:hover { color: var(--bg-text); background: none; text-decoration: underline; }
button:disabled { opacity: .5; cursor: default; }
input {
  font: inherit; width: 100%;
  border: 1px solid var(--line); border-radius: 9px;
  padding: 10px 12px; margin: 8px 0 14px; background: #fffdf8;
}
input:focus { outline: 2px solid var(--accent); border-color: transparent; }
.lobby-grid { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 700px) { .lobby-grid { grid-template-columns: 1fr; } }

/* ---------- hra ---------- */
.banner {
  min-height: 24px; padding: 8px 14px; margin-bottom: 10px;
  border-radius: var(--radius); font-weight: 600;
  background: var(--card); border: 1px solid var(--line);
}
.banner.turn { border-color: var(--accent); color: var(--accent-dark); }
.banner.wait { color: var(--warn); }
.banner.warn { border-color: var(--warn); color: var(--warn); }
.banner.win  { border-color: var(--accent); background: #e2f2e7; color: var(--accent-dark); }
.banner.lose { border-color: var(--danger); background: #f9e7e4; color: var(--danger); }
.banner.draw { background: #eef0f4; color: #4a5060; }

.seat {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 4px; font-weight: 600;
  color: var(--bg-text);
}
.seat .pcolor { font-size: .8rem; color: var(--bg-muted); font-weight: 500; }
.seat .clock {
  margin-left: auto; font-variant-numeric: tabular-nums;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 9px; padding: 3px 12px; min-width: 86px; text-align: center;
}
.seat .clock.active { border-color: var(--accent); color: var(--accent-dark); }
.seat .clock.low { border-color: var(--danger); color: var(--danger); animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .55; } }

/* deska: jeden canvas; touch-action none - pan/pinch patří desce,
   stránka se nesmí scrollovat ani zoomovat gestem přes desku */
#boardwrap {
  position: relative;
  width: min(92vw, 560px);
  height: min(92vw, 560px);
  margin: 4px auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 3px 14px rgba(0,0,0,.16);
  touch-action: none;
}
#board { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* nástroje nad deskou (zoom / skok na poslední tah) */
#boardtools {
  position: absolute; right: 8px; top: 8px; z-index: 3;
  display: flex; flex-direction: column; gap: 6px;
}
#boardtools .tool {
  width: 34px; height: 34px; padding: 0;
  border-radius: 9px; font-size: 1.1rem; font-weight: 700; line-height: 1;
  background: rgba(255, 253, 248, .92); color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: 0 1px 4px rgba(0,0,0,.18);
}
#boardtools .tool:hover { background: #fff; border-color: var(--accent); color: var(--accent-dark); }

/* tečka na okraji desky - směr soupeřova tahu mimo viditelné okno */
#edge-dots { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.edge-dot {
  position: absolute; width: 14px; height: 14px; margin: -7px 0 0 -7px;
  border-radius: 50%; pointer-events: auto; cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,.4), inset 0 1px 1px rgba(255,255,255,.5);
  animation: pulse 1s infinite;
}
.edge-dot.red  { background: radial-gradient(circle at 34% 30%, var(--stone-red-hi), var(--stone-red) 70%); }
.edge-dot.blue { background: radial-gradient(circle at 34% 30%, var(--stone-blue-hi), var(--stone-blue) 70%); }

#overlay {
  position: absolute; inset: 0; z-index: 5;
  display: flex; flex-direction: column; gap: 14px;
  align-items: center; justify-content: center;
  background: rgba(20, 16, 10, .55);
  color: #fff; font-weight: 700; font-size: 1.15rem;
  text-align: center; padding: 16px;
}
#overlay[hidden] { display: none; }

#actions {
  display: flex; gap: 10px; align-items: center; justify-content: center;
  margin-top: 12px; flex-wrap: wrap;
}

/* ---------- hra proti počítači ---------- */
.levels {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px;
}
@media (max-width: 560px) { .levels { grid-template-columns: repeat(2, 1fr); } }
.levels button {
  display: flex; flex-direction: column; gap: 2px;
  padding: 8px 4px; font-size: .78rem; font-weight: 500;
  background: #fffdf8; color: var(--ink);
  border: 1px solid var(--line);
}
.levels button strong { font-size: 1.1rem; }
.levels button:hover { background: #e2f2e7; border-color: var(--accent); }

/* ---------- toasty ---------- */
#toasts {
  position: fixed; right: 14px; bottom: 14px; z-index: 50;
  display: flex; flex-direction: column; gap: 8px; max-width: 340px;
}
.toast {
  background: var(--ink); color: #fff;
  border-radius: 10px; padding: 10px 14px; font-weight: 500;
  box-shadow: 0 4px 14px rgba(0,0,0,.3);
  animation: slidein .25s ease;
}
.toast.warn { background: var(--warn); }
.toast.err  { background: var(--danger); }
.toast.win  { background: var(--accent-dark); }
@keyframes slidein { from { transform: translateY(8px); opacity: 0; } }