/* ---------- Wordle Solver AI - dark NYT-style theme ---------- */
:root {
  --bg: #121213;
  --panel: #1a1a1b;
  --panel-2: #202021;
  --border: #2f2f31;
  --text: #e7e7e9;
  --muted: #9d9da3;
  --green: #538d4e;
  --yellow: #b59f3b;
  --gray: #3a3a3c;
  --gold: #e8c34a;
  --red: #d0564f;
  --accent: #6aaa64;
  --blue: #5b8dd6;
  --radius: 10px;
  --tile: 52px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; width: min(1200px, 96vw); margin: 0 auto; padding: 18px 0 40px; }

/* ---------- header ---------- */
.site-header { border-bottom: 1px solid var(--border); background: #161617; }
.header-inner { width: min(1200px, 96vw); margin: 0 auto; padding: 18px 0 0; text-align: center; }
.logo { font-size: 28px; letter-spacing: 2px; font-weight: 800; }
.logo span:not(.logo-rest) {
  display: inline-block; width: 34px; height: 34px; line-height: 34px;
  border-radius: 5px; margin: 0 1px; font-size: 20px; vertical-align: middle;
}
.logo-rest { color: var(--text); margin-left: 8px; }
.tile-g { background: var(--green); } .tile-y { background: var(--yellow); } .tile-b { background: var(--gray); }
.tagline { color: var(--muted); font-size: 13.5px; margin: 8px 0 14px; }
.tabs { display: flex; justify-content: center; gap: 4px; flex-wrap: wrap; }
.tab {
  background: none; border: none; color: var(--muted); font-size: 14.5px; font-weight: 600;
  padding: 10px 18px; cursor: pointer; border-bottom: 3px solid transparent;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- generic ---------- */
.hidden { display: none !important; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 16px;
}
.card h3 { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 10px; }
.card h4 { font-size: 12.5px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 14px 0 8px; }

.btn {
  background: var(--accent); border: none; color: #fff; font-weight: 700;
  padding: 10px 18px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.ghost { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.btn.small { padding: 7px 12px; font-size: 13px; }

.controls { display: flex; align-items: flex-end; gap: 22px; flex-wrap: wrap; }
.control-group label { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 6px; }
.control-group.checks { display: flex; flex-direction: column; gap: 8px; }
.check { font-size: 13.5px; color: var(--text); cursor: pointer; display: flex; align-items: center; gap: 7px; text-transform: none; letter-spacing: 0; }
.check input { accent-color: var(--accent); width: 15px; height: 15px; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button {
  background: var(--panel-2); color: var(--muted); border: none; padding: 9px 14px;
  font-size: 13.5px; font-weight: 600; cursor: pointer; border-right: 1px solid var(--border);
}
.seg button:last-child { border-right: none; }
.seg button.on { background: var(--accent); color: #fff; }

.word-input {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  font-size: 16px; letter-spacing: 6px; text-transform: uppercase; font-weight: 700;
  padding: 9px 12px; border-radius: 8px; width: 140px; text-align: center;
}
.word-input:focus { outline: 2px solid var(--accent); }

.banner {
  text-align: center; font-size: 17px; font-weight: 700; padding: 14px;
  border-radius: var(--radius); margin-bottom: 16px; background: var(--panel-2); border: 1px solid var(--border);
}
.banner.win { background: #274a2b; border-color: var(--green); }
.banner.lose { background: #4a2727; border-color: var(--red); }

.badge {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px;
  font-size: 11.5px; padding: 3px 10px; margin-left: 8px; color: var(--accent); letter-spacing: 0;
  text-transform: none; font-weight: 700;
}

/* ---------- boards ---------- */
.boards-row { display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.board-col { flex: 1 1 300px; min-width: 300px; text-align: center; }
.board-col h3 { margin-bottom: 12px; }

.board { display: grid; grid-template-rows: repeat(6, var(--tile)); gap: 6px; justify-content: center; margin-bottom: 12px; }
.board .row { display: grid; grid-template-columns: repeat(5, var(--tile)); gap: 6px; }
.tile {
  width: var(--tile); height: var(--tile);
  border: 2px solid var(--border); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 800; text-transform: uppercase; user-select: none;
  transition: transform .12s ease;
}
.tile.filled { border-color: #565758; animation: pop .1s ease; }
.tile.g { background: var(--green); border-color: var(--green); }
.tile.y { background: var(--yellow); border-color: var(--yellow); }
.tile.b { background: var(--gray); border-color: var(--gray); }
.tile.flip { animation: flip .5s ease forwards; }
.tile.clickable { cursor: pointer; }
.tile.clickable:hover { transform: scale(1.06); }
@keyframes pop { 50% { transform: scale(1.12); } }
@keyframes flip { 0% { transform: rotateX(0); } 50% { transform: rotateX(90deg); } 100% { transform: rotateX(0); } }
.row.shake { animation: shake .4s ease; }
@keyframes shake {
  10%, 90% { transform: translateX(-2px); } 20%, 80% { transform: translateX(4px); }
  30%, 70% { transform: translateX(-6px); } 40%, 60% { transform: translateX(6px); } 50% { transform: translateX(-4px); }
}

/* ---------- keyboard ---------- */
.kb { display: flex; flex-direction: column; gap: 6px; align-items: center; margin-top: 6px; }
.kb-row { display: flex; gap: 5px; }
.key {
  background: #818384; color: #fff; border: none; border-radius: 4px;
  min-width: 30px; height: 44px; padding: 0 8px; font-size: 13px; font-weight: 700;
  cursor: pointer; text-transform: uppercase;
}
.key.wide { min-width: 52px; font-size: 11px; }
.key.g { background: var(--green); } .key.y { background: var(--yellow); } .key.b { background: var(--gray); color: #808084; }
.key:active { transform: scale(.95); }

/* ---------- explanation / stats ---------- */
.explain {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; font-size: 13.5px; line-height: 1.55; text-align: left; color: var(--text);
  min-height: 52px; margin-top: 4px;
}
.explain b { color: var(--accent); }
.explain .bits { color: var(--blue); font-weight: 700; }
.explain em { color: var(--muted); }

.stats-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.stats-table th {
  text-align: left; color: var(--muted); font-size: 11px; text-transform: uppercase;
  letter-spacing: 1px; padding: 7px 8px; border-bottom: 1px solid var(--border);
}
.stats-table td { padding: 7px 8px; border-bottom: 1px solid #232325; }
.stats-table tr:hover td { background: var(--panel-2); }
.stats-table .word-cell { font-weight: 800; letter-spacing: 2px; text-transform: uppercase; cursor: pointer; }
.stats-table .word-cell:hover { color: var(--accent); }
.stats-table .num { font-variant-numeric: tabular-nums; }
.stats-table .gold { color: var(--gold); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 8px; font-size: 12.5px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
}
.chip.more { color: var(--muted); font-weight: 400; letter-spacing: 0; text-transform: none; }

.assistant-grid { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .assistant-grid { grid-template-columns: 1fr; } }
.row-actions { display: flex; gap: 8px; justify-content: center; margin: 10px 0; }
.hint-text { font-size: 12.5px; color: var(--muted); line-height: 1.5; margin-bottom: 12px; }

/* ---------- evolution lab ---------- */
.gen-counter { font-size: 15px; font-weight: 800; margin-left: auto; }
.gen-counter span { color: var(--gold); font-size: 20px; }
.evo-grid { display: grid; grid-template-columns: 1fr 400px; gap: 16px; align-items: start; }
@media (max-width: 1050px) { .evo-grid { grid-template-columns: 1fr; } }
.evo-canvas-card canvas { width: 100%; height: auto; background: #151516; border-radius: 8px; border: 1px solid var(--border); }
#evo-chart { width: 100%; height: auto; background: #151516; border-radius: 8px; border: 1px solid var(--border); }
.evo-side .card { margin-bottom: 16px; }
.legend { display: flex; gap: 14px; margin-top: 8px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 5px; }
.legend .dot.best { background: var(--gold); } .legend .dot.mean { background: var(--blue); } .legend .dot.rate { background: var(--green); }
.dead-word { color: var(--red); font-weight: 700; }
.gold-word { color: var(--gold); font-weight: 700; }

.champion-box { font-size: 13.5px; line-height: 1.6; }
.champion-box .opener { font-size: 22px; font-weight: 800; letter-spacing: 4px; text-transform: uppercase; color: var(--gold); }
.gene-bar { display: flex; align-items: center; gap: 8px; margin: 5px 0; }
.gene-bar .gene-label { width: 150px; font-size: 11.5px; color: var(--muted); text-align: right; }
.gene-bar .bar { flex: 1; height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; }
.gene-bar .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), var(--accent)); border-radius: 4px; }
.gene-bar .gene-val { width: 38px; font-size: 11.5px; font-variant-numeric: tabular-nums; }

/* ---------- arena ---------- */
.evo-arena-card canvas { width: 100%; height: auto; background: #151516; border-radius: 8px; border: 1px solid var(--border); }
.arena-bar { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.arena-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.arena-word { font-size: 22px; font-weight: 800; letter-spacing: 6px; text-transform: uppercase; color: var(--gold); }
.arena-stats { margin-left: auto; font-size: 13px; color: var(--muted); }
.arena-stats b { color: var(--text); font-variant-numeric: tabular-nums; }

/* ---------- compare ---------- */
.cmp-card { flex: 1 1 300px; min-width: 300px; }
.cmp-card .board { --tile: 44px; grid-template-rows: none; }
.cmp-card .board .row { grid-template-columns: repeat(5, 44px); }
.cmp-card .tile { font-size: 21px; }
.cmp-meta { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.cmp-meta b { color: var(--text); }
.turn-note { font-size: 12.5px; color: var(--muted); text-align: left; margin: 3px 0 8px; line-height: 1.45; }
.turn-note b { color: var(--text); }
.turn-note .bits { color: var(--blue); font-weight: 700; }
.winner-tag { display: inline-block; background: #274a2b; border: 1px solid var(--green); color: #a9d8a4; border-radius: 999px; font-size: 11.5px; font-weight: 800; padding: 3px 10px; margin-left: 8px; }

.spinner {
  display: inline-block; width: 16px; height: 16px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -3px; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.site-footer {
  border-top: 1px solid var(--border); color: var(--muted); font-size: 12px;
  text-align: center; padding: 16px; line-height: 1.6;
}
.site-footer code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }

@media (max-width: 700px) {
  :root { --tile: 44px; }
  .logo { font-size: 22px; }
  .controls { gap: 12px; }
}