:root {
  --bg: #f4f2ef;
  --surface: #ffffff;
  --text: #221f26;
  --muted: #6b6572;
  --line: #e4e0da;
  --nav: #4e4757;
  --nav-ink: #ffffff;
  --nav-hover: #3d3745;
  --accent: #c2562b;
  --accent-ink: #ffffff;
  --accent-soft: #fbe9e1;
  --tile: #f3dfb4;
  --tile-edge: #d7bd86;
  --tile-ink: #3a2e18;
  --good: #3f8f4f;
  --warn: #c79a1c;
  --grey: #8a8591;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(34 31 38 / 6%), 0 6px 20px rgb(34 31 38 / 6%);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17151a; --surface: #211e25; --text: #ece8f0; --muted: #a39cab; --line: #34303a;
    --nav: #2b2631; --nav-hover: #3a3441; --accent: #e07347; --accent-soft: #3a2519;
    --tile: #d9c28f; --tile-edge: #b39b63; --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 20px rgb(0 0 0 / 30%);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #17151a; --surface: #211e25; --text: #ece8f0; --muted: #a39cab; --line: #34303a;
  --nav: #2b2631; --nav-hover: #3a3441; --accent: #e07347; --accent-soft: #3a2519;
  --tile: #d9c28f; --tile-edge: #b39b63; --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 20px rgb(0 0 0 / 30%);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 16px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.015em; }
code, kbd { font-family: var(--mono); font-size: .9em; }
kbd { background: var(--bg); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 16px; }

/* ---------- header ---------- */
.masthead { background: var(--surface); border-bottom: 1px solid var(--line); }
.masthead .wrap { display: flex; align-items: center; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 800; font-size: 22px; letter-spacing: -.02em; }
.brand-tiles { display: flex; gap: 2px; }
.brand-tiles span {
  width: 22px; height: 24px; display: grid; place-items: center; font-size: 14px; font-weight: 800;
  background: var(--tile); color: var(--tile-ink); border-radius: 4px; box-shadow: inset 0 -2px 0 var(--tile-edge);
}
.brand-tiles span:nth-child(2) { transform: rotate(-6deg) translateY(1px); }
.brand-tiles span:nth-child(3) { transform: rotate(5deg); }
.theme-toggle { margin-left: auto; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; font-size: 17px; }
.menu-toggle { display: none; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; font-size: 18px; }

.navbar { background: var(--nav); }
.navbar ul { list-style: none; margin: 0; padding: 0; }
.nav-main { display: flex; justify-content: center; flex-wrap: wrap; }
.nav-main > li { position: relative; }
.nav-main a, .nav-main button {
  display: block; padding: 16px 18px; color: var(--nav-ink); text-decoration: none; font: inherit; font-size: 16px;
  background: none; border: 0; cursor: pointer; white-space: nowrap;
}
.nav-main a:hover, .nav-main button:hover, .nav-main a[aria-current="page"], .nav-main button.active { background: var(--nav-hover); }
.nav-main a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--accent); }
.caret { display: inline-block; margin-left: 6px; border: 5px solid transparent; border-top-color: currentColor; border-bottom: 0; vertical-align: 2px; }
.dropdown {
  position: absolute; right: 0; top: 100%; min-width: 230px; z-index: 20; display: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: 0 0 10px 10px; box-shadow: var(--shadow); padding: 6px 0;
}
.dropdown a { color: var(--text); padding: 9px 18px; font-size: 15px; }
.dropdown a:hover, .dropdown a[aria-current="page"] { background: var(--accent-soft); box-shadow: none; }
.has-dropdown.open .dropdown { display: block; }
@media (hover: hover) and (min-width: 861px) { .has-dropdown:hover .dropdown { display: block; } }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; padding: 28px 16px 48px; }
.content { min-width: 0; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.page-title { margin: 0 0 6px; font-size: clamp(26px, 4vw, 34px); }
.lede { margin: 0 0 20px; color: var(--muted); }

/* ---------- forms ---------- */
.tool-form { display: grid; gap: 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.field { display: grid; gap: 4px; flex: 1 1 140px; min-width: 0; }
.field > span { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
input[type="text"], input[type="number"], select, textarea {
  width: 100%; font: inherit; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--text);
}
textarea { resize: vertical; min-height: 110px; line-height: 1.5; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.big-input { font-size: 22px !important; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-family: var(--mono) !important; }
.big-input::placeholder { letter-spacing: .02em; text-transform: none; font-weight: 500; font-size: 17px; font-family: system-ui, sans-serif; }
.btn {
  font: inherit; font-weight: 700; padding: 11px 22px; border-radius: 10px; border: 0; cursor: pointer;
  background: var(--accent); color: var(--accent-ink);
}
.btn:hover { filter: brightness(1.06); }
.btn.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--line); }
.btn:disabled { opacity: .55; cursor: default; }
.check { display: inline-flex; align-items: center; gap: 7px; font-size: 15px; cursor: pointer; }
details.advanced summary { cursor: pointer; color: var(--muted); font-weight: 600; font-size: 14px; }
details.advanced[open] summary { margin-bottom: 10px; }
.hint { font-size: 13px; color: var(--muted); margin: 0; }

/* ---------- results ---------- */
.results { margin-top: 22px; }
.results:empty { display: none; }
.summary { margin: 0 0 14px; font-weight: 600; }
.summary small { color: var(--muted); font-weight: 500; }
.group { margin-bottom: 20px; }
.group h3 { margin: 0 0 10px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.group h3 .count { font-size: 12px; font-weight: 700; color: var(--muted); background: var(--bg); border-radius: 99px; padding: 1px 9px; }
.words { display: flex; flex-wrap: wrap; gap: 7px; }
.word {
  font: inherit; font-family: var(--mono); font-weight: 700; font-size: 15px; text-transform: uppercase; letter-spacing: .04em;
  padding: 5px 11px; border-radius: 8px; cursor: pointer; line-height: 1.3;
  background: var(--tile); color: var(--tile-ink); border: 0; box-shadow: inset 0 -2px 0 var(--tile-edge);
}
.word:hover { filter: brightness(1.05); transform: translateY(-1px); }
.word .pts { font-size: 11px; margin-left: 4px; opacity: .75; vertical-align: 1px; }
.word .blank { color: var(--accent); text-decoration: underline dotted; }
.word.bingo { box-shadow: inset 0 -2px 0 var(--tile-edge), 0 0 0 2px var(--accent); }
.word.plain { background: var(--bg); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }
.empty, .error { padding: 18px; border-radius: 10px; background: var(--bg); color: var(--muted); margin: 0; }
.error { color: #b3261e; }
.more { margin-top: 6px; }
.loading { color: var(--muted); display: flex; align-items: center; gap: 10px; }
.loading::before { content: ""; width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--accent); animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 14px; }
.toolbar label { font-size: 14px; color: var(--muted); display: flex; gap: 6px; align-items: center; }
.toolbar select { width: auto; padding: 6px 10px; }

/* Tile rack display */
.tiles { display: flex; flex-wrap: wrap; gap: 6px; }
.tiles span {
  width: 44px; height: 48px; display: grid; place-items: center; position: relative; font: 800 22px/1 var(--mono); text-transform: uppercase;
  background: var(--tile); color: var(--tile-ink); border-radius: 7px; box-shadow: inset 0 -3px 0 var(--tile-edge);
}
.tiles span sub { position: absolute; right: 4px; bottom: 5px; font-size: 10px; }

/* ---------- prose ---------- */
.prose { margin-top: 28px; }
.prose h2 { font-size: 22px; margin: 28px 0 8px; }
.prose h3 { font-size: 17px; margin: 20px 0 6px; }
.prose p, .prose li { color: var(--text); }
.prose ul, .prose ol { padding-left: 22px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th, .prose td { text-align: left; border-bottom: 1px solid var(--line); padding: 7px 10px; }
.prose th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

/* ---------- sidebar ---------- */
.sidebar { display: grid; gap: 18px; align-content: start; }
.sidebar .panel { padding: 18px 20px; }
.sidebar h2 { font-size: 15px; margin: 0 0 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a { display: flex; align-items: center; gap: 10px; padding: 7px 0; color: var(--text); text-decoration: none; font-weight: 600; border-bottom: 1px solid var(--line); }
.sidebar li:last-child a { border-bottom: 0; }
.sidebar li a:hover { color: var(--accent); }
.sidebar li a[aria-current="page"] { color: var(--accent); }
.sidebar .ico { width: 26px; height: 26px; border-radius: 6px; display: grid; place-items: center; font: 800 13px var(--mono); background: var(--tile); color: var(--tile-ink); box-shadow: inset 0 -2px 0 var(--tile-edge); flex: none; }
.tip p { margin: 0; font-size: 15px; }
.values { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 5px; }
.values span { font: 700 13px var(--mono); text-transform: uppercase; background: var(--bg); border-radius: 6px; text-align: center; padding: 3px 0; }
.values b { color: var(--accent); font-size: 11px; margin-left: 2px; }

/* ---------- footer ---------- */
.footer { background: var(--nav); color: #d9d4df; padding: 28px 0 36px; font-size: 14px; }
.footer a { color: #fff; }
.footer .cols { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-bottom: 12px; }
.footer .cols a { text-decoration: none; }
.footer .cols a:hover { text-decoration: underline; }

/* ---------- definition dialog ---------- */
dialog.define {
  width: min(520px, calc(100vw - 32px)); max-height: min(80vh, 640px); border: 0; border-radius: 14px; padding: 0;
  background: var(--surface); color: var(--text); box-shadow: 0 20px 60px rgb(0 0 0 / 35%);
}
dialog.define::backdrop { background: rgb(20 16 24 / 50%); }
.define header { display: flex; align-items: center; gap: 12px; padding: 18px 20px 12px; border-bottom: 1px solid var(--line); }
.define header h2 { margin: 0; font: 800 24px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.define header .pts { color: var(--muted); font-size: 13px; }
.define header button { margin-left: auto; border: 0; background: var(--bg); color: var(--text); width: 32px; height: 32px; border-radius: 8px; cursor: pointer; font-size: 18px; }
.define .body { padding: 14px 20px 20px; overflow-y: auto; max-height: calc(min(80vh, 640px) - 70px); }
.define .pos { font-style: italic; color: var(--muted); margin: 12px 0 4px; font-weight: 600; }
.define ol { margin: 0; padding-left: 20px; }
.define li { margin: 4px 0; }
.define .links { margin-top: 14px; font-size: 14px; display: flex; gap: 14px; flex-wrap: wrap; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 18px; border-radius: 10px; font-weight: 600; font-size: 14px; z-index: 50; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .theme-toggle { margin-left: auto; }
  .navbar { display: none; }
  .navbar.open { display: block; }
  .nav-main { flex-direction: column; }
  .nav-main a, .nav-main button { padding: 13px 16px; width: 100%; text-align: left; }
  .dropdown { position: static; box-shadow: none; border: 0; border-radius: 0; background: var(--nav-hover); padding: 0; }
  .dropdown a { color: var(--nav-ink); padding-left: 32px; }
  .dropdown a:hover, .dropdown a[aria-current="page"] { background: var(--nav); }
  .panel { padding: 18px; }
  .layout { padding-top: 18px; }
}