/* ============================================================
   Akademia Go — style
   ============================================================ */
:root {
  --bg-0: #12100d;
  --bg-1: #1c1915;
  --bg-2: #262119;
  --panel: rgba(255, 250, 240, 0.045);
  --panel-border: rgba(255, 235, 200, 0.12);
  --ink: #f3ead8;
  --ink-dim: #b8ac93;
  --gold: #d9a441;
  --gold-bright: #f0c060;
  --green: #4caf7d;
  --red: #e05c4f;
  --blue: #5b9bd5;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  font-size: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
button { touch-action: manipulation; }

body {
  font-family: 'Avenir Next', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(217, 164, 65, 0.10), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(91, 155, 213, 0.07), transparent 60%),
    linear-gradient(160deg, var(--bg-1), var(--bg-0) 70%);
  min-height: 100vh;
}

h1, h2, h3 { font-weight: 700; letter-spacing: 0.3px; }
button { font-family: inherit; cursor: pointer; }

/* ---------- pasek górny ---------- */
.topbar {
  display: flex; align-items: center; gap: 18px;
  padding: 14px 26px;
  background: rgba(18, 16, 13, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--panel-border);
  position: sticky; top: 0; z-index: 50;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.25rem; font-weight: 800; color: var(--gold-bright);
  cursor: pointer; user-select: none; white-space: nowrap;
}
.logo .stones { font-size: 1.1rem; letter-spacing: -6px; }
.nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav button {
  background: none; border: none; color: var(--ink-dim);
  font-size: 0.97rem; font-weight: 600;
  padding: 9px 16px; border-radius: 10px;
  transition: all 0.18s;
}
.nav button:hover { color: var(--ink); background: var(--panel); }
.nav button.active { color: var(--bg-0); background: var(--gold); }
.topbar .spacer { flex: 1; }
.icon-btn {
  background: var(--panel); border: 1px solid var(--panel-border);
  color: var(--ink-dim); border-radius: 10px;
  width: 40px; height: 40px; font-size: 1.1rem;
  transition: all 0.18s;
}
.icon-btn:hover { color: var(--ink); border-color: var(--gold); }

main { max-width: 1200px; margin: 0 auto; padding: 28px 22px 70px; }
.view { display: none; animation: fadeIn 0.3s ease; }
.view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- strona główna ---------- */
.hero { text-align: center; padding: 42px 10px 30px; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  background: linear-gradient(120deg, var(--gold-bright), #fff0d0 50%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 12px;
}
.hero p.tagline { color: var(--ink-dim); font-size: 1.15rem; max-width: 640px; margin: 0 auto 8px; }

.rules-pill {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 18px; padding: 10px 20px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 999px; color: var(--ink-dim); font-size: 0.95rem;
}
.rules-pill b { color: var(--gold-bright); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px; margin-top: 34px; }
.card {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 26px 22px;
  text-align: left; cursor: pointer;
  transition: all 0.22s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-4px); border-color: var(--gold); box-shadow: var(--shadow); }
.card .card-icon { font-size: 2rem; margin-bottom: 12px; }
.card h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--gold-bright); }
.card p { color: var(--ink-dim); font-size: 0.95rem; line-height: 1.5; }
.card .card-step {
  position: absolute; top: 14px; right: 16px;
  font-size: 0.8rem; font-weight: 700; color: var(--bg-0);
  background: var(--gold); border-radius: 999px; padding: 3px 11px;
}
.card .card-progress { margin-top: 14px; font-size: 0.85rem; color: var(--green); font-weight: 600; }

.path-section { margin-top: 46px; }
.path-section h2 { margin-bottom: 6px; }
.path-section > p { color: var(--ink-dim); margin-bottom: 18px; }
.path {
  display: flex; gap: 0; align-items: stretch; flex-wrap: wrap;
}
.path-step {
  flex: 1; min-width: 130px; position: relative;
  background: var(--panel); border: 1px solid var(--panel-border);
  padding: 16px 14px 14px; margin: 4px;
  border-radius: 12px; text-align: center;
}
.path-step.done { border-color: var(--green); }
.path-step.current { border-color: var(--gold); box-shadow: 0 0 18px rgba(217, 164, 65, 0.2); }
.path-step .ps-icon { font-size: 1.4rem; }
.path-step .ps-name { font-weight: 700; font-size: 0.92rem; margin-top: 6px; }
.path-step .ps-sub { color: var(--ink-dim); font-size: 0.78rem; margin-top: 4px; }
.path-step .ps-check { position: absolute; top: 6px; right: 9px; color: var(--green); font-weight: 800; }

/* ---------- układ gry ---------- */
.game-layout { display: grid; grid-template-columns: minmax(300px, 640px) 320px; gap: 26px; justify-content: center; align-items: start; }

.board-col { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.status-strip {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 7px 10px;
}
.status-strip .thinking { margin-top: 0; min-height: 0; text-align: center; }
.status-strip #chipWhite { justify-self: end; }

.action-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.action-bar .btn { padding: 11px 4px; white-space: nowrap; }

.board-wrap { position: relative; }
.goban { width: 100%; height: auto; display: block; border-radius: 12px; box-shadow: var(--shadow); }
.goban-coords text { fill: rgba(36, 26, 10, 0.55); font-size: 17px; font-weight: 600; font-family: inherit; }

.stone-placed { animation: stoneDrop 0.18s ease-out; transform-origin: center; transform-box: fill-box; }
@keyframes stoneDrop { from { transform: scale(1.6); opacity: 0.4; } to { transform: scale(1); opacity: 1; } }
.stone-captured { animation: stoneFade 0.45s ease forwards; transform-origin: center; transform-box: fill-box; }
@keyframes stoneFade { to { transform: scale(0.3); opacity: 0; } }

/* wolne bicie kończące partię — najpierw "podskok", potem zanikanie */
.stone-captured-slow { animation: stoneFadeSlow 1.6s ease forwards; transform-origin: center; transform-box: fill-box; }
@keyframes stoneFadeSlow {
  0%   { transform: scale(1); opacity: 1; }
  30%  { transform: scale(1.14); opacity: 1; }
  100% { transform: scale(0.3); opacity: 0; }
}
/* miejsce bicia: dwa pulsy i zanik — kończy się tuż po zniknięciu kamieni
   (stoneFadeSlow trwa 1.6 s), zamiast migać w nieskończoność */
.capture-ring {
  fill: none; stroke: #e05c4f; stroke-width: 4;
  animation: captureRing 1.8s ease-in-out forwards;
  transform-origin: center; transform-box: fill-box;
}
@keyframes captureRing {
  0%   { opacity: 0.35; transform: scale(0.88); }
  25%  { opacity: 1; transform: scale(1.08); }
  50%  { opacity: 0.4; transform: scale(0.92); }
  75%  { opacity: 0.9; transform: scale(1.05); }
  100% { opacity: 0; transform: scale(1.12); }
}

/* kandydat na kamień (dotyk): tapnięcie w jego obrębie zatwierdza ruch */
.candidate-ring {
  fill: none; stroke: var(--gold-bright); stroke-width: 3.5;
  stroke-dasharray: 10 7;
  animation: atariPulse 1.4s ease-in-out infinite;
}

.atari-halo { fill: rgba(224, 92, 79, 0.4); animation: atariPulse 1.1s ease-in-out infinite; }
.atari-ring {
  fill: none; stroke: rgba(224, 92, 79, 0.95); stroke-width: 3;
  animation: atariPulse 1.1s ease-in-out infinite;
}
@keyframes atariPulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.85; } }

/* żywe grupy (Benson) — stała, spokojna zielona membrana, bez pulsu;
   pewny sygnał życia, subtelny by nie przeszkadzał zaawansowanym */
.alive-halo { fill: rgba(63, 165, 107, 0.22); stroke: rgba(63, 165, 107, 0.62); stroke-width: 2.5; }
.lib-dot { opacity: 0.92; }
.lib-dot.lib-safe { opacity: 0.55; }
.lib-dot.lib-urgent { animation: atariPulse 1.1s ease-in-out infinite; }
.hint-mark {
  fill: none; stroke: var(--gold-bright); stroke-width: 4; stroke-dasharray: 10 7;
  animation: hintSpin 3.5s linear infinite, atariPulse 1.4s ease-in-out infinite;
  transform-origin: center; transform-box: fill-box;
}
@keyframes hintSpin { to { transform: rotate(360deg); } }

.board-banner {
  position: absolute; inset: 0; display: none;
  align-items: center; justify-content: center;
  background: rgba(10, 8, 5, 0.5); border-radius: 12px;
  backdrop-filter: blur(2px); z-index: 5;
}
.board-banner.show { display: flex; animation: fadeIn 0.3s; }
.board-banner .bb-inner {
  text-align: center; padding: 24px 26px; max-width: 94%;
  background: rgba(26, 23, 18, 0.93); border: 1px solid var(--panel-border);
  border-radius: 16px; box-shadow: var(--shadow);
  animation: bannerPop 0.5s cubic-bezier(0.2, 1.3, 0.4, 1);
}
@keyframes bannerPop { from { transform: scale(0.7) translateY(16px); opacity: 0; } }
.board-banner h2 { font-size: 1.9rem; margin-bottom: 10px; }
.board-banner p { color: var(--ink-dim); margin-bottom: 20px; }
.board-banner .bb-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.board-banner .bb-peek { margin-top: 14px; font-size: 0.78rem; color: var(--ink-dim); opacity: 0.75; }

/* ---------- panel boczny ---------- */
.sidebar { display: flex; flex-direction: column; gap: 16px; }
.panel {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 18px;
}
.panel h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1.2px; color: var(--ink-dim); margin-bottom: 12px; }

.status-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.player-chip { display: flex; align-items: center; gap: 9px; padding: 8px 12px; border-radius: 10px; border: 1px solid transparent; flex: 1; }
.player-chip.turn { border-color: var(--gold); background: rgba(217, 164, 65, 0.08); }
.chip-stone { width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0; box-shadow: inset -2px -3px 5px rgba(0,0,0,0.4), 1px 2px 3px rgba(0,0,0,0.5); }
.chip-stone.black { background: radial-gradient(circle at 35% 30%, #666, #111 65%); }
.chip-stone.white { background: radial-gradient(circle at 35% 30%, #fff, #cfcabc 70%); }
.player-chip .pc-name { font-weight: 700; font-size: 0.92rem; }
.player-chip .pc-caps { color: var(--ink-dim); font-size: 0.8rem; }
.thinking { color: var(--gold-bright); font-size: 0.85rem; min-height: 1.2em; margin-top: 10px; }
.thinking .dots::after { content: ''; animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 0% { content: ''; } 25% { content: '.'; } 50% { content: '..'; } 75% { content: '...'; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--panel-border);
  color: var(--ink); font-weight: 600; font-size: 0.93rem;
  padding: 10px 16px; border-radius: 10px; transition: all 0.18s;
}
.btn:hover:not(:disabled) { border-color: var(--gold); color: var(--gold-bright); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary { background: var(--gold); color: var(--bg-0); border-color: var(--gold); }
.btn.primary:hover:not(:disabled) { background: var(--gold-bright); color: var(--bg-0); }
.btn.danger:hover:not(:disabled) { border-color: var(--red); color: var(--red); }
.btn.small { padding: 7px 12px; font-size: 0.85rem; }
.btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 7px 0; font-size: 0.92rem; color: var(--ink-dim); cursor: pointer; user-select: none; }
.switch { position: relative; display: inline-block; width: 42px; height: 23px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute; inset: 0; border-radius: 999px;
  background: rgba(255, 255, 255, 0.12); transition: 0.2s; cursor: pointer;
}
.switch .slider::before {
  content: ''; position: absolute; width: 17px; height: 17px; border-radius: 50%;
  left: 3px; top: 3px; background: var(--ink-dim); transition: 0.2s;
}
.switch input:checked + .slider { background: var(--gold); }
.switch input:checked + .slider::before { transform: translateX(19px); background: var(--bg-0); }

.move-list { max-height: 180px; overflow-y: auto; font-size: 0.88rem; line-height: 1.9; color: var(--ink-dim); display: flex; flex-wrap: wrap; gap: 4px 10px; }
.move-list .mv { cursor: pointer; padding: 0 6px; border-radius: 6px; white-space: nowrap; }
.move-list .mv:hover { background: var(--panel); color: var(--ink); }
.move-list .mv.current { background: var(--gold); color: var(--bg-0); font-weight: 700; }

/* przeglądanie partii — dock pod planszą, widoczny razem z nią */
.review-dock {
  background: var(--panel); border: 1px solid var(--gold);
  border-radius: var(--radius); padding: 12px 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.review-bar { display: flex; align-items: center; gap: 10px; }
.review-bar span {
  font-size: 0.85rem; color: var(--ink-dim); min-width: 58px;
  text-align: center; font-variant-numeric: tabular-nums;
}
.review-bar input[type=range] { flex: 1; accent-color: var(--gold); height: 26px; }
.review-controls { display: flex; gap: 8px; }
.review-controls .rv-btn { flex: 1; font-size: 1.05rem; padding: 9px 0; }
.review-controls .rv-btn.wide { flex: 2; }
.review-controls .btn.small { flex: 1; }

/* ---------- ustawienia nowej gry ---------- */
.setup-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 18px; }
.opt-group .og-label { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: var(--ink-dim); margin-bottom: 9px; }
.opt-row { display: flex; gap: 8px; flex-wrap: wrap; }
.opt {
  background: var(--panel); border: 1.5px solid var(--panel-border);
  color: var(--ink); border-radius: 10px; padding: 9px 15px;
  font-size: 0.93rem; font-weight: 600; transition: all 0.15s;
}
.opt:hover { border-color: var(--ink-dim); }
.opt.sel { border-color: var(--gold); background: rgba(217, 164, 65, 0.12); color: var(--gold-bright); }
.level-desc { margin-top: 8px; font-size: 0.85rem; color: var(--ink-dim); min-height: 2.4em; }
.setup-actions { margin-top: 22px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

/* ---------- lekcje ---------- */
.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-top: 18px; }
.lesson-card {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 18px; cursor: pointer; transition: all 0.2s;
  position: relative;
}
.lesson-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.lesson-card .lc-icon { font-size: 1.6rem; }
.lesson-card h3 { margin: 8px 0 6px; font-size: 1.05rem; }
.lesson-card p { color: var(--ink-dim); font-size: 0.87rem; line-height: 1.45; }
.lesson-card .lc-num { position: absolute; top: 12px; right: 14px; color: var(--ink-dim); font-size: 0.8rem; font-weight: 700; }
.lesson-card.done { border-color: rgba(76, 175, 125, 0.5); }
.lesson-card.done::after { content: '✓ ukończono'; display: block; margin-top: 10px; color: var(--green); font-size: 0.82rem; font-weight: 700; }

.lesson-msg {
  font-size: 1.02rem; line-height: 1.65; color: var(--ink);
}
.lesson-msg b { color: var(--gold-bright); }
.lesson-msg i { color: var(--ink-dim); }
.lesson-progress { display: flex; gap: 5px; margin-bottom: 14px; }
.lesson-progress .lp-dot { height: 5px; flex: 1; border-radius: 99px; background: rgba(255,255,255,0.12); }
.lesson-progress .lp-dot.done { background: var(--gold); }
.lesson-feedback { margin-top: 12px; font-weight: 600; font-size: 0.95rem; min-height: 1.4em; }
.lesson-feedback.ok { color: var(--green); }
.lesson-feedback.bad { color: var(--red); animation: shake 0.4s; }
@keyframes shake { 0%, 100% { transform: none; } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }

/* ---------- zadania ---------- */
.tier-label { margin: 26px 0 4px; color: var(--gold-bright); font-size: 1.05rem; }
.tier-sub { color: var(--ink-dim); font-size: 0.9rem; margin-bottom: 12px; }
.puzzle-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.puzzle-card {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 12px; padding: 15px; cursor: pointer; transition: all 0.18s;
}
.puzzle-card:hover { border-color: var(--gold); transform: translateY(-2px); }
.puzzle-card.done { border-color: rgba(76, 175, 125, 0.5); }
.puzzle-card h4 { font-size: 0.98rem; margin: 6px 0 4px; }
.puzzle-card p { color: var(--ink-dim); font-size: 0.82rem; line-height: 1.4; }
.puzzle-card .pz-done { color: var(--green); font-size: 0.8rem; font-weight: 700; margin-top: 8px; }

/* ---------- statystyki ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 18px; }
.stat-tile { background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-tile .st-num { font-size: 2.1rem; font-weight: 800; color: var(--gold-bright); }
.stat-tile .st-label { color: var(--ink-dim); font-size: 0.88rem; margin-top: 4px; }
.level-stats { margin-top: 22px; }
.level-row { display: flex; align-items: center; gap: 14px; padding: 11px 14px; border-bottom: 1px solid var(--panel-border); }
.level-row:last-child { border-bottom: none; }
.level-row .lr-name { font-weight: 700; width: 110px; }
.level-row .lr-bar { flex: 1; height: 9px; border-radius: 99px; background: rgba(255,255,255,0.08); overflow: hidden; }
.level-row .lr-fill { height: 100%; background: linear-gradient(90deg, var(--green), #7fd4a5); border-radius: 99px; }
.level-row .lr-rec { font-size: 0.85rem; color: var(--ink-dim); width: 90px; text-align: right; }
.level-row .lr-badge { font-size: 1.1rem; width: 28px; text-align: center; }

/* ---------- modale / toasty ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-2); border: 1px solid var(--gold);
  color: var(--ink); padding: 13px 22px; border-radius: 12px;
  font-weight: 600; box-shadow: var(--shadow); opacity: 0; pointer-events: none;
  transition: all 0.3s; z-index: 100; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.section-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 4px; }
.section-head h2 { font-size: 1.5rem; }
.section-head .sh-sub { color: var(--ink-dim); font-size: 0.95rem; }
.back-link { background: none; border: none; color: var(--gold); font-weight: 600; font-size: 0.92rem; padding: 4px 0; margin-bottom: 14px; }
.back-link:hover { color: var(--gold-bright); }

footer { text-align: center; color: var(--ink-dim); font-size: 0.85rem; padding: 30px 0 10px; opacity: 0.7; }

/* ---------- mobile ---------- */
@media (max-width: 980px) {
  .game-layout { grid-template-columns: 1fr; }
  .board-col, .sidebar { max-width: 640px; margin: 0 auto; width: 100%; }
  /* w lekcjach i zadaniach najpierw instrukcja, potem plansza */
  #lessonPlayer .sidebar, #puzzlePlayer .sidebar { order: -1; margin-bottom: 4px; }
}

@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  .nav { order: 3; width: 100%; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav button { white-space: nowrap; padding: 8px 12px; }
  .logo { font-size: 1.1rem; }
}

@media (max-width: 560px) {
  main { padding: 14px 10px 50px; }
  .board-col { gap: 9px; }
  .status-strip { padding: 5px 6px; }
  .player-chip { padding: 6px 8px; gap: 7px; }
  .player-chip .pc-name { font-size: 0.84rem; }
  .player-chip .pc-caps { font-size: 0.74rem; }
  .chip-stone { width: 18px; height: 18px; }
  .action-bar { gap: 6px; }
  .action-bar .btn { font-size: 0.8rem; padding: 12px 2px; min-height: 44px; }
  .review-dock { padding: 10px; }
  .review-controls .rv-btn { min-height: 46px; }
  .review-controls .btn.small { min-height: 44px; }
  .board-banner .bb-inner { padding: 18px 14px; }
  .board-banner h2 { font-size: 1.45rem; }
  .board-banner .bb-actions .btn { flex: 1 1 100%; }
  .panel { padding: 14px; }
}

/* ---------- pełne Go: faza liczenia ---------- */
.score-panel { margin-top: 14px; }
.score-hint { color: var(--ink-dim); font-size: 0.9rem; margin: 8px 0 12px; }
.score-table {
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  gap: 5px 16px;
  margin: 10px 0 14px;
  font-size: 0.95rem;
}
.score-table .sc-head { color: var(--ink-dim); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
.score-table .sc-total { font-weight: 700; color: var(--gold-bright); border-top: 1px solid var(--panel-border); padding-top: 5px; }
.score-actions { display: flex; gap: 9px; flex-wrap: wrap; }