:root{
  --bg: #0b1020;
  --panel: #111a33;
  --panel2: #0f1730;
  --text: #eef2ff;
  --muted: #b8c0e0;
  --border: rgba(255,255,255,.12);
  --shadow: 0 18px 40px rgba(0,0,0,.35);
  --accent: #6ee7ff;
  --accent2: #a78bfa;
  --danger: #ff5c7a;
  --ok: #6ee7a8;
  --focus: #fbbf24;
  --radius: 16px;
  --gap: 16px;
  --cell: 42px;
}

@media (prefers-color-scheme: light){
  :root{
    --bg: #f4f6ff;
    --panel: #ffffff;
    --panel2: #ffffff;
    --text: #0b1020;
    --muted: #4b5563;
    --border: rgba(15, 23, 42, .14);
    --shadow: 0 18px 40px rgba(2, 6, 23, .12);
    --accent: #0284c7;
    --accent2: #7c3aed;
    --danger: #dc2626;
    --ok: #059669;
    --focus: #f59e0b;
  }
}

*{ box-sizing: border-box; }
html, body{ height:100%; }
html{
  background: var(--bg);
}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  /* Tek renk arka plan: altta/üstte ton değişimi olmasın. */
  background: var(--bg);
  color: var(--text);
  line-height: 1.35;
}

.skip-link{
  position:absolute;
  left:-9999px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  z-index: 10;
}
.skip-link:focus{ left: 12px; }

.app-header{
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 16px 8px;
  display:flex;
  gap: var(--gap);
  justify-content: space-between;
  align-items: center;
}
.brand{
  display:flex;
  gap: 12px;
  align-items: center;
}
.brand__mark{
  width: 44px; height: 44px;
  border-radius: 14px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(110,231,255,.25), rgba(167,139,250,.22));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-weight: 800;
  letter-spacing: .5px;
}
.brand__title{
  font-size: 20px;
  margin:0;
}
.brand__subtitle{
  margin:2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.toolbar{ display:flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.btn{
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
  box-shadow: 0 10px 22px rgba(0,0,0,.12);
  font-weight: 650;
}
.btn:hover{ filter: brightness(1.04); }
.btn:active{ transform: translateY(1px); }
.btn--ghost{
  background: transparent;
}
.btn--accent{
  background: linear-gradient(135deg, rgba(110,231,255,.20), rgba(167,139,250,.18));
}
.btn:focus-visible{
  outline: 3px solid rgba(251,191,36,.55);
  outline-offset: 2px;
}

.layout{
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 16px 24px;
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: var(--gap);
  align-items: start;
}

.board-card, .side-card{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.board-card{ padding: 14px; }
.side-card{ padding: 14px; }

.board-meta{
  display:grid;
  grid-template-columns: 160px 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}
.stat{
  padding: 10px 12px;
  background: rgba(0,0,0,.12);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.stat__label{ font-size: 12px; color: var(--muted); margin-bottom: 4px;}
.stat__value{ font-weight: 800; letter-spacing: .2px; }
.stat--hint{
  background: rgba(0,0,0,.08);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.25;
}

.board-wrap{ display:flex; justify-content: center; }
.grid{
  --n: 12;
  display:grid;
  grid-template-columns: repeat(var(--n), var(--cell));
  grid-template-rows: repeat(var(--n), var(--cell));
  gap: clamp(3px, 1.2vw, 6px);
  padding: clamp(6px, 1.4vw, 10px);
  border-radius: 18px;
  background: rgba(0,0,0,.14);
  border: 1px solid var(--border);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: contain;
}

.cell{
  width: var(--cell);
  height: var(--cell);
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  color: var(--text);
  display:grid;
  place-items: center;
  font-weight: 900;
  letter-spacing: .6px;
  cursor: pointer;
  position: relative;
  touch-action: none;
}
.cell:hover{ filter: brightness(1.07); }
.cell:focus-visible{
  outline: 3px solid rgba(251,191,36,.60);
  outline-offset: 2px;
}
.cell[data-state="locked"]{
  cursor: default;
  opacity: .95;
}

.cell.selected{
  background: rgba(110,231,255,.15);
  border-color: rgba(110,231,255,.55);
}
.cell.hint{
  animation: hintPulse 900ms ease-in-out 0s 2;
  border-color: rgba(251,191,36,.75);
  box-shadow: 0 0 0 3px rgba(251,191,36,.22);
}

.cell.locked::after{
  content:"";
  position:absolute;
  inset: -2px;
  border-radius: 14px;
  border: 2px solid var(--foundColor, rgba(110,231,168,.85));
  opacity: .95;
  pointer-events:none;
}
.cell.locked{
  background: color-mix(in oklab, var(--foundColor, rgba(110,231,168,.85)) 18%, transparent);
  border-color: color-mix(in oklab, var(--foundColor, rgba(110,231,168,.85)) 55%, var(--border));
}

.grid.shake{
  animation: shake 280ms ease-in-out 0s 1;
  border-color: rgba(255,92,122,.55);
}

.help{
  margin-top: 12px;
  color: var(--muted);
  border-top: 1px dashed var(--border);
  padding-top: 10px;
}
.help summary{ cursor:pointer; color: var(--text); font-weight: 700; }
.help ul{ margin: 10px 0 0 18px; }
.help kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 8px;
  padding: 2px 6px;
  color: var(--text);
}

.side-head h2{ margin: 0 0 6px; font-size: 16px; }
.muted{ margin:0; color: var(--muted); font-size: 13px; }

.word-list{
  list-style:none;
  padding:0;
  margin: 12px 0 0;
  display:grid;
  gap: 10px;
}
.word{
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(0,0,0,.10);
  display:flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.word__text{
  font-weight: 850;
  letter-spacing: .3px;
}
.word__badge{
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 999px;
}
.word.found{
  text-decoration: line-through;
  opacity: .95;
  border-color: color-mix(in oklab, var(--foundColor, rgba(110,231,168,.85)) 55%, var(--border));
  background: color-mix(in oklab, var(--foundColor, rgba(110,231,168,.85)) 16%, rgba(0,0,0,.08));
}
.word.found .word__badge{
  color: var(--text);
  border-color: transparent;
  background: color-mix(in oklab, var(--foundColor, rgba(110,231,168,.85)) 35%, transparent);
}

.overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.52);
  display:grid;
  place-items:center;
  padding: 16px;
}
.overlay[hidden]{
  display: none !important;
}
.overlay__card{
  width: min(520px, 100%);
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.overlay__card h2{ margin: 0 0 8px; }
.overlay__card p{ margin: 0 0 12px; color: var(--muted); }
.overlay__actions{ display:flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

@keyframes shake{
  0%{ transform: translateX(0); }
  25%{ transform: translateX(-5px); }
  50%{ transform: translateX(5px); }
  75%{ transform: translateX(-4px); }
  100%{ transform: translateX(0); }
}
@keyframes hintPulse{
  0%{ transform: scale(1); }
  45%{ transform: scale(1.06); }
  100%{ transform: scale(1); }
}

@media (max-width: 980px){
  .layout{ grid-template-columns: 1fr; }
  .board-meta{ grid-template-columns: 1fr 1fr; }
  .stat--hint{ grid-column: 1 / -1; }
}

@media (max-width: 520px){
  :root{ --cell: 34px; }
  .brand__subtitle{ display:none; }
  .board-meta{ grid-template-columns: 1fr; }
  .toolbar{ justify-content: flex-start; }
  #statusLine{ display: none; }

  /* Mobilde "Bulunan 0/10" tek satırda dursun */
  .board-meta .stat:not(.stat--hint){
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
  }
  .board-meta .stat:not(.stat--hint) .stat__label{
    margin-bottom: 0;
    white-space: nowrap;
  }
  .board-meta .stat:not(.stat--hint) .stat__value{
    white-space: nowrap;
  }
}