/* Queens Game — styles, built on the gamekit design tokens (gamekit.css, loaded
 * first). Mobile-first, fluid board, automatic dark mode via the token system,
 * motion that respects prefers-reduced-motion. One-queen-per-line board with
 * region-colored cells, thick region borders, crown/cross marks, a technique
 * hint popover, the three-size daily challenge, and an archive calendar.
 * Region cell backgrounds are set inline by queens.js from a fixed light-pastel
 * palette that stays readable under both themes with dark crowns and borders. */

:root {
  /* Indigo brand accent (#4F46E5). Override the gamekit accent tokens so every
   * shared component (auth button, leaderboard widget, bookmark) matches. */
  --gk-accent: #4f46e5;
  --gk-accent-strong: #4338ca;
  --gk-accent-soft: #eef2ff;
  --gk-accent-contrast: #ffffff;
  --gk-warn: #d97706;

  --accent: var(--gk-accent);
  --accent-dark: var(--gk-accent-strong);
  --accent-soft: var(--gk-accent-soft);
  --ink: var(--gk-ink);
  --ink-soft: var(--gk-ink-soft);
  --bg: var(--gk-bg);
  --card: var(--gk-surface);
  --board-bg: var(--gk-surface-2);
  --line: var(--gk-line);
  --radius: var(--gk-radius);
  --shadow: var(--gk-shadow);
  --shadow-sm: var(--gk-shadow-sm);
  --font: var(--gk-font-sans);
  --display: var(--gk-font-display);
  --maxw: var(--gk-maxw);

  /* Queens board colors. Crowns and region borders are dark in both themes
   * because the region fills are always light pastels. */
  --qn-grid-line: rgba(20, 24, 60, 0.18);
  --qn-region-line: #23264d;
  --qn-queen: #1b1e3b;
  --hint: var(--gk-warn);
  --ok: #15803d;

  --board-size: min(92vw, 60dvh, 560px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --gk-accent: #a5b4fc;
    --gk-accent-strong: #c7d2fe;
    --gk-accent-soft: #1e1b4b;
    --gk-accent-contrast: #0b1020;
    --gk-warn: #f0b429;
    --qn-grid-line: rgba(0, 0, 0, 0.28);
    --qn-region-line: #05070f;
    --qn-queen: #14162e;
    --ok: #4ade80;
  }
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 max(20px, env(safe-area-inset-left)) 0 max(20px, env(safe-area-inset-right));
}

h1, h2, h3 { line-height: 1.15; color: var(--ink); font-family: var(--display); }
h1 { font-size: var(--gk-fs-2xl); margin: 0 0 0.4em; letter-spacing: -0.01em; }
h2 { font-size: var(--gk-fs-xl); margin: 1.6em 0 0.5em; }
h3 { font-size: var(--gk-fs-lg); margin: 1.2em 0 0.3em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--ink-soft); }
.small { font-size: var(--gk-fs-sm); }
.section-lead { font-size: var(--gk-fs-lg); color: var(--ink-soft); max-width: 60ch; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: var(--gk-space-4);
}

.gk-input {
  font: inherit;
  padding: 9px 12px;
  border: 1px solid var(--gk-line-strong);
  border-radius: var(--gk-radius);
  background: var(--card);
  color: var(--ink);
  min-height: var(--gk-tap);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--gk-accent-contrast);
  padding: 8px 14px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Header / nav */
.site-header {
  background: color-mix(in srgb, var(--card) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(8px);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: env(safe-area-inset-top);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--gk-space-3);
  min-height: 58px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; font-size: 1.15rem; font-family: var(--display); }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #4338ca);
  color: #fff;
  font-weight: 800;
}
.site-nav { display: flex; gap: 2px; align-items: center; margin-left: auto; }
.site-nav a {
  color: var(--ink-soft);
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.96rem;
}
.site-nav a:hover { background: var(--accent-soft); color: var(--accent-dark); text-decoration: none; }
.site-nav a.active { color: var(--accent-dark); background: var(--accent-soft); }

.header-account { display: flex; align-items: center; }
.header-account[hidden] { display: none; }
.gk-auth-btn { padding: 6px 12px; min-height: var(--gk-tap); }
.gk-auth-btn .gk-avatar { width: 30px; height: 30px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; min-width: var(--gk-tap); min-height: var(--gk-tap); }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: transform .2s; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: var(--gk-space-7); background: var(--card); }
.footer-inner { padding: 24px 20px calc(34px + env(safe-area-inset-bottom)); }
.footer-note { color: var(--ink-soft); font-size: 0.85rem; max-width: 70ch; }
.footer-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 18px 24px; margin-bottom: 18px; }
.footer-col h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin: 0 0 8px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.footer-col a { color: var(--ink-soft); font-size: 0.95rem; }

/* Buttons (site variants mirror gamekit's .gk-btn). */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  min-height: var(--gk-tap);
  border: 1px solid transparent;
  border-radius: var(--gk-radius);
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--gk-transition-fast), border-color var(--gk-transition-fast), transform var(--gk-transition-fast), box-shadow var(--gk-transition-fast);
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); text-decoration: none; }
.btn-ghost { background: var(--card); color: var(--accent-dark); border-color: var(--gk-line-strong); }
.btn-ghost:hover { background: var(--accent-soft); text-decoration: none; }
.btn-sm { min-height: 34px; padding: 6px 14px; font-size: var(--gk-fs-sm); }
.btn.is-disabled { opacity: 0.5; pointer-events: none; }

/* Hero */
.hero { padding: 40px 20px 8px; text-align: center; }
.hero h1 { margin-bottom: 0.2em; }
.hero-sub { font-size: 1.15rem; color: var(--ink-soft); max-width: 55ch; margin: 0 auto; }

/* Sections */
.play-section { padding: 24px 20px calc(24px + env(safe-area-inset-bottom)); }
.play-head { text-align: center; margin-bottom: 16px; }
.play-head h1, .play-head h2 { margin: 0 0 0.15em; }
.play-links { text-align: center; color: var(--ink-soft); margin-top: 16px; }
.copy-section { padding: 20px; max-width: 760px; }
.copy-section.slim { max-width: 720px; }
.copy-section p, .copy-section li { max-width: 68ch; }
.cta-line { margin-top: 22px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.disclaimer { background: color-mix(in srgb, var(--gk-warn) 14%, var(--card)); border: 1px solid var(--gk-warn); border-radius: var(--radius); padding: 14px 16px; color: var(--ink); max-width: none; }

.feature-list, .how-steps { padding-left: 1.2em; }
.feature-list li, .how-steps li { margin: 0.5em 0; }

/* Size cards */
.sizes-section { padding: 16px 20px 28px; }
.size-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-top: 12px; }
.size-card {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: transform var(--gk-transition-fast), box-shadow var(--gk-transition-fast), border-color var(--gk-transition-fast);
}
.size-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); text-decoration: none; }
.size-card-title { font-weight: 800; font-size: 1.2rem; color: var(--accent-dark); font-family: var(--display); }
.size-card-meta { font-size: 0.85rem; color: var(--ink-soft); font-weight: 600; }
.size-card-blurb { font-size: 0.9rem; color: var(--ink-soft); }

.size-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.size-tab { min-height: var(--gk-tap); display: inline-flex; align-items: center; padding: 8px 16px; border-radius: var(--gk-radius-pill); background: var(--card); border: 1px solid var(--gk-line-strong); color: var(--accent-dark); font-weight: 600; font-size: 0.95rem; cursor: pointer; }
.size-tab:hover { background: var(--accent-soft); text-decoration: none; }
.size-tab.current { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }

/* Game board */
.queens {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gk-space-3);
  width: 100%;
  margin: 0 auto;
}
.qn-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--gk-space-3); width: var(--board-size); max-width: 100%; }
.qn-stats { display: flex; gap: var(--gk-space-5); }
.qn-stat { display: flex; flex-direction: column; align-items: center; line-height: 1.1; }
.qn-stat-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
.qn-stat-val { font-weight: 800; font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.qn-tools { display: flex; align-items: center; gap: 4px; }

.qn-icon-btn {
  display: inline-grid; place-items: center;
  width: var(--gk-tap); height: var(--gk-tap);
  border: 1px solid transparent; border-radius: var(--gk-radius);
  background: none; color: var(--ink-soft); cursor: pointer;
}
.qn-icon-btn:hover { background: var(--accent-soft); color: var(--accent-dark); }

/* More-actions dropdown menu */
.qn-menu { position: relative; }
.qn-menu-list {
  position: absolute; right: 0; top: calc(100% + 4px);
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 6px; min-width: 168px; z-index: 30;
  display: flex; flex-direction: column; gap: 2px;
}
.qn-menu-list[hidden] { display: none; }
.qn-menu-list button {
  text-align: left; background: none; border: 0; cursor: pointer;
  font: inherit; color: var(--ink); padding: 10px 12px; border-radius: 8px;
  min-height: var(--gk-tap);
}
.qn-menu-list button:hover { background: var(--accent-soft); color: var(--accent-dark); }

.qn-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.qn-actions .btn { padding: 10px 16px; }
.qn-actions [data-role="new-puzzle"][hidden] { display: none; }

.qn-settings { display: flex; justify-content: center; }
.qn-toggle { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 0.92rem; cursor: pointer; user-select: none; }
.qn-toggle input { width: 18px; height: 18px; accent-color: var(--accent); }

.qn-boardwrap { width: 100%; display: flex; flex-direction: column; align-items: center; }
.qn-board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--n), 1fr);
  grid-template-rows: repeat(var(--n), 1fr);
  gap: 0;
  width: var(--board-size);
  height: var(--board-size);
  max-width: 100%;
  background: var(--qn-region-line);
  border: 3px solid var(--qn-region-line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
.qn-cell {
  position: relative;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  border: 1px solid var(--qn-grid-line);
  font-weight: 800;
  color: var(--ink);
  transition: filter .08s, box-shadow .1s;
  z-index: 1;
}
.qn-cell:active { filter: brightness(0.94); }
.qn-cell.edge-t { border-top: 3px solid var(--qn-region-line); }
.qn-cell.edge-b { border-bottom: 3px solid var(--qn-region-line); }
.qn-cell.edge-l { border-left: 3px solid var(--qn-region-line); }
.qn-cell.edge-r { border-right: 3px solid var(--qn-region-line); }

.qn-mark { pointer-events: none; line-height: 1; font-size: 1em; display: grid; place-items: center; }
.qn-cell.has-queen .qn-mark { color: var(--qn-queen); filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.25)); }
.qn-cell.has-cross .qn-mark { color: rgba(20, 22, 45, 0.55); font-size: 0.7em; font-weight: 700; }
.qn-cell.has-cross.auto .qn-mark { color: rgba(20, 22, 45, 0.3); }

.qn-cell.hint-cell { box-shadow: inset 0 0 0 3px var(--hint); z-index: 3; }
.qn-cell.hint-bad { box-shadow: inset 0 0 0 3px var(--gk-danger); z-index: 4; }
.qn-cell.conflict { box-shadow: inset 0 0 0 3px var(--gk-danger); z-index: 4; }
.qn-cell.conflict.has-queen .qn-mark {
  color: var(--gk-danger);
  filter: none;
  animation: qn-pulse 0.9s ease-in-out infinite;
}
@keyframes qn-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* Hint popover — appears below the board, in flow, when a hint is shown. */
.qn-hint-popover {
  position: relative;
  width: min(100%, var(--board-size));
  margin: 10px auto 0;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 40px 12px 14px;
  text-align: left;
  box-shadow: var(--shadow-sm);
}
.qn-hint-popover[hidden] { display: none; }
.qn-hint-close {
  position: absolute; top: 6px; right: 6px;
  border: 0; background: none; cursor: pointer;
  font-size: 1.3rem; line-height: 1; color: var(--ink-soft);
  width: 32px; height: 32px; border-radius: 8px;
}
.qn-hint-close:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.qn-hint-name { margin: 0 0 4px; font-weight: 800; color: var(--accent-dark); font-family: var(--display); }
.qn-hint-text { margin: 0 0 10px; color: var(--ink); font-size: 0.95rem; }
.qn-hint-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.qn-message { text-align: center; color: var(--ink-soft); min-height: 1.2em; margin: 0; font-size: 0.95rem; }

.game-controls-extra { display: flex; gap: 10px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }

/* Desktop: stat row above, thumb controls become a side column beside the board. */
@media (min-width: 1024px) {
  .queens {
    display: grid;
    grid-template-columns: var(--board-size) auto;
    grid-template-areas: "stats stats" "board side" "settings settings" "message message";
    justify-content: center;
    align-items: start;
    column-gap: var(--gk-space-5);
    row-gap: var(--gk-space-3);
  }
  .qn-toolbar { grid-area: stats; }
  .qn-boardwrap { grid-area: board; }
  .qn-actions { grid-area: side; flex-direction: column; align-self: start; min-width: 132px; }
  .qn-actions .btn { width: 100%; }
  .qn-settings { grid-area: settings; }
  .qn-message { grid-area: message; }
}

/* Win overlay */
.qn-overlay {
  position: fixed; inset: 0;
  background: rgba(8, 12, 30, 0.6);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  padding-bottom: calc(20px + env(safe-area-inset-bottom));
  z-index: 200;
}
.qn-overlay[hidden] { display: none; }
.qn-overlay-card {
  position: relative;
  overflow: hidden;
  background: var(--card);
  border-radius: var(--gk-radius-lg);
  padding: 28px 26px;
  max-width: 400px; width: 100%;
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  text-align: center;
  box-shadow: var(--gk-shadow-lg);
  animation: rise .25s ease;
}
@keyframes rise { from { transform: translateY(14px); opacity: 0; } to { transform: none; opacity: 1; } }
.qn-overlay-close {
  position: sticky; top: -18px; float: right;
  margin: -18px -16px 0 0;
  border: 0; background: none;
  font-size: 1.5rem; line-height: 1;
  color: var(--ink-soft); cursor: pointer;
  min-width: 44px; min-height: 44px;
  z-index: 1;
}
.qn-overlay-card h2 { margin: 0 0 0.1em; color: var(--accent-dark); font-size: var(--gk-fs-2xl); }
.qn-overlay-sub { color: var(--ink-soft); margin: 0 0 16px; }
.qn-overlay-stats { display: flex; justify-content: center; gap: 22px; margin: 0 0 20px; }
.qn-overlay-stats div { display: flex; flex-direction: column; }
.qn-overlay-stats dt { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
.qn-overlay-stats dd { margin: 2px 0 0; font-weight: 800; font-size: 1.5rem; font-variant-numeric: tabular-nums; color: var(--ink); }
.qn-overlay-actions { display: flex; flex-direction: column; gap: 8px; }
.qn-overlay-actions [data-role="next-link"][hidden] { display: none; }
.qn-overlay-cross { margin: 14px 0 0; font-size: 0.9rem; color: var(--ink-soft); }
.qn-share-status { min-height: 1.2em; font-size: 0.85rem; color: var(--accent-dark); margin: 10px 0 0; }

/* Crown "cheer" burst on win. */
.qn-cheer { position: absolute; top: 0; left: 0; right: 0; height: 0; pointer-events: none; color: var(--accent); }
.qn-cheer svg { position: absolute; top: 6px; left: 50%; transform: translateX(-50%); opacity: 0; }
.qn-overlay.show .qn-cheer svg { animation: qn-pop 0.7s ease forwards; }
@keyframes qn-pop {
  0% { opacity: 0; transform: translateX(-50%) scale(0.4); }
  60% { opacity: 1; transform: translateX(-50%) scale(1.15); }
  100% { opacity: 1; transform: translateX(-50%) scale(1); }
}

/* Post-win leaderboard panel inside the overlay. */
.qn-lb-panel { text-align: left; margin: 4px 0 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.qn-lb-panel[hidden] { display: none; }
.qn-lb-title { margin: 0 0 8px; font-size: var(--gk-fs-lg); color: var(--ink); text-align: center; }
.qn-lb-signin { text-align: center; color: var(--ink-soft); font-size: var(--gk-fs-sm); margin: 0 0 12px; }
.gk-btn--sm { min-height: 34px; padding: 6px 14px; font-size: var(--gk-fs-sm); }

.qn-noscript { background: color-mix(in srgb, var(--gk-warn) 18%, var(--card)); border: 1px solid var(--gk-warn); padding: 14px; border-radius: 10px; color: var(--ink); }

/* Daily challenge: tabs, progress, countdown, panels, done state. */
.daily { width: 100%; max-width: 760px; margin: 0 auto; }
.daily-bar { display: flex; flex-direction: column; gap: 10px; margin-bottom: 14px; }
.daily-tabs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.daily-tab {
  position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  min-height: var(--gk-tap);
  padding: 8px 16px;
  border-radius: var(--gk-radius-pill);
  background: var(--card);
  border: 1px solid var(--gk-line-strong);
  color: var(--accent-dark);
  font-weight: 700; font-size: 0.95rem;
  cursor: pointer;
}
.daily-tab:hover { background: var(--accent-soft); text-decoration: none; }
.daily-tab.current { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }
.daily-tab.solved:not(.current) { border-color: var(--ok); color: var(--ok); }
.daily-tab-check { color: var(--ok); font-weight: 900; }
.daily-tab.current .daily-tab-check { color: var(--gk-accent-contrast); }
.daily-tab-link { color: var(--ink-soft); }
.daily-meta { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }
.daily-progress {
  display: inline-flex; align-items: center;
  background: var(--accent-soft); color: var(--accent-dark);
  border-radius: var(--gk-radius-pill); padding: 4px 12px;
  font-weight: 800; font-variant-numeric: tabular-nums;
}
.daily-countdown, .daily-done-count { color: var(--ink-soft); font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.daily-panel[hidden] { display: none; }
.daily-done {
  text-align: center; margin-top: 18px;
  background: color-mix(in srgb, var(--ok) 10%, var(--card));
  border: 1px solid var(--ok); border-radius: var(--radius);
  padding: 20px 18px;
}
.daily-done[hidden] { display: none; }
.daily-done h2 { margin: 0 0 0.3em; color: var(--ok); }
.daily-done .cta-line { justify-content: center; }
.date-nav { display: flex; gap: 10px; justify-content: space-between; align-items: center; flex-wrap: wrap; margin-top: 18px; }

/* Leaderboard page */
.lb-page { padding: 24px 20px calc(24px + env(safe-area-inset-bottom)); max-width: 720px; }
.lb-controls { display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--gk-space-4); margin: 16px 0; }
.lb-sizes { margin: 0; }
.lb-date-field { display: flex; flex-direction: column; gap: 4px; }
.lb-date-label { font-size: var(--gk-fs-sm); font-weight: 600; color: var(--ink-soft); }
.lb-date { max-width: 200px; }
.lb-list { min-height: 120px; margin-top: 8px; padding: 6px 4px; }
.lb-disabled { color: var(--ink-soft); }

/* FAQ */
.faq { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--accent); font-weight: 700; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-answer { padding: 0 18px 14px; }
.faq-answer p { margin: 0; color: var(--ink-soft); max-width: none; }

/* Tips */
.tip-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 12px; }
.tip { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow-sm); }
.tip h3 { margin: 0 0 0.3em; color: var(--accent-dark); font-size: 1rem; }
.tip p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

/* Techniques */
.technique-tier { padding: 8px 20px 4px; max-width: 900px; }
.technique-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; margin-top: 10px; }
.technique-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-sm); }
.technique-card h3 { margin: 0 0 0.5em; color: var(--accent-dark); }
.technique-detail { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
.technique-detail dt { font-weight: 700; color: var(--ink); font-size: 0.85rem; }
.technique-detail dd { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }

/* Techniques TOC */
.toc { padding: 8px 20px; max-width: 900px; }
.toc-title { margin: 0 0 6px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--ink-soft); }
.toc-list { margin: 0; padding-left: 1.1em; columns: 2; column-gap: 24px; }
.toc-sublist { margin: 2px 0 6px; padding-left: 1.1em; font-size: 0.9rem; }

/* LinkedIn Queens page: numbered sections + ways to play */
.numbered-section { position: relative; }
.section-num { display: inline-block; color: var(--accent); font-weight: 800; margin-right: 8px; font-family: var(--display); }
.way-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 12px; }
.way-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px;
  color: var(--ink); box-shadow: var(--shadow-sm);
  transition: transform var(--gk-transition-fast), box-shadow var(--gk-transition-fast), border-color var(--gk-transition-fast);
}
.way-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); text-decoration: none; }
.way-card h3 { margin: 0; color: var(--accent-dark); font-size: 1.05rem; }
.way-card p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; flex: 1; }
.way-cta { color: var(--accent); font-weight: 700; font-size: 0.9rem; }

/* LinkedIn Queens Today */
.today-size-hint { margin: 10px 0 0; padding: 10px 14px; background: var(--accent-soft); border-radius: var(--radius); font-size: 0.92rem; }
.disclaimer-note { font-size: 0.88rem; color: var(--ink-soft); border-left: 3px solid var(--accent); padding-left: 12px; margin-bottom: 1em; }

/* Logic games hub */
.games-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 12px; }
.game-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px;
  color: var(--ink); box-shadow: var(--shadow-sm);
  transition: transform var(--gk-transition-fast), box-shadow var(--gk-transition-fast), border-color var(--gk-transition-fast);
}
.game-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); text-decoration: none; }
.game-card-title { font-weight: 800; font-size: 1.15rem; color: var(--accent-dark); font-family: var(--display); }
.game-card-desc { color: var(--ink-soft); font-size: 0.92rem; flex: 1; }
.game-card-cta { color: var(--accent); font-weight: 700; font-size: 0.9rem; }

/* Mode shells (Beat the Clock, Multiplayer) */
.mode-shell { max-width: 640px; }
.mode-badge {
  display: inline-block; margin: 0 0 8px;
  background: var(--accent-soft); color: var(--accent-dark);
  border-radius: var(--gk-radius-pill); padding: 4px 12px;
  font-weight: 800; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em;
}

/* Comparison table */
.table-wrap { overflow-x: auto; margin: 16px 0; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.compare-table th, .compare-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare-table thead th { color: var(--accent-dark); font-family: var(--display); }
.compare-table tbody th { font-weight: 700; color: var(--ink); }

/* LinkedIn Queens Today: per-size hints + solution reveal */
.today-size { padding: 18px 20px; border-top: 1px solid var(--line); }
.today-hints { margin-top: 18px; }
.today-hints h3 { margin-bottom: 0.4em; }
.today-solution-wrap { margin-top: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow-sm); overflow: hidden; }
.today-solution-toggle { cursor: pointer; padding: 14px 18px; font-weight: 700; list-style: none; color: var(--accent-dark); }
.today-solution-toggle::-webkit-details-marker { display: none; }
.today-solution { padding: 0 18px 18px; }

/* Solution mini-grid (linkedin-queens-today reveals) */
.qn-solution-grid {
  display: grid;
  grid-template-columns: repeat(var(--n), 1fr);
  width: min(90vw, 360px);
  aspect-ratio: 1 / 1;
  border: 2px solid var(--qn-region-line);
  border-radius: 10px;
  overflow: hidden;
  margin: 6px 0;
}
.qn-solution-cell {
  display: grid; place-items: center;
  border: 1px solid var(--qn-grid-line);
  color: var(--qn-queen);
  font-size: min(4vw, 18px);
}

/* Archive calendar */
.archive { padding: 8px 20px 20px; }
.archive-month { margin-bottom: 26px; }
.archive-month h2 { margin: 0 0 10px; }
.cal { display: flex; flex-direction: column; gap: 4px; }
.cal-head, .cal-week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-head span { text-align: center; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); font-weight: 700; }
.cal-day {
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  gap: 3px;
  min-height: 46px; padding: 6px 2px 4px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--ink);
  font-variant-numeric: tabular-nums;
}
a.cal-day:hover { border-color: var(--accent); background: var(--accent-soft); text-decoration: none; }
.cal-day.is-out { color: var(--ink-soft); opacity: 0.4; background: transparent; border-color: transparent; }
.cal-day.is-empty { border: 0; background: none; min-height: 0; }
.cal-day.all-done { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, var(--card)); }
.cal-day.some-done { border-color: var(--accent); }
.cal-num { font-size: 0.85rem; font-weight: 700; }
.cal-chips { display: flex; gap: 3px; min-height: 8px; }
.cal-chip { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.cal-day.all-done .cal-chip { background: var(--ok); }
.cal-chip-btc { background: var(--accent-dark); }
.cal-day.all-done .cal-chip-btc { background: var(--ok); }
.cal-unplayed { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--ink-soft); opacity: 0.6; }
.archive-month-meta { font-size: 0.78rem; font-weight: 400; color: var(--ink-soft); margin-left: 8px; }

.error-section { text-align: center; padding: 50px 20px; }

/* Puzzle library */
.library-section { padding: 20px; border-top: 1px solid var(--line); }
.library-section:first-of-type { border-top: 0; }
.library-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; margin-bottom: 8px; }
.library-head h2 { margin: 0; }
.puzzle-num-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); gap: 8px; margin-top: 12px; }
.puzzle-num { display: inline-flex; align-items: center; justify-content: center; min-height: var(--gk-tap); padding: 8px; border-radius: var(--gk-radius); background: var(--card); border: 1px solid var(--gk-line-strong); color: var(--accent-dark); font-weight: 700; font-variant-numeric: tabular-nums; }
.puzzle-num:hover { background: var(--accent-soft); text-decoration: none; }
.library-more { margin-top: 10px; }
.puzzle-nav { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.puzzle-nav .spacer { flex: 1; }
.crumb { margin: 0 0 6px; color: var(--ink-soft); font-size: 0.9rem; }

/* Mobile nav */
@media (max-width: 860px) {
  body { font-size: 16px; }
  .nav-toggle { display: block; order: 3; }
  .header-account { order: 2; margin-left: auto; }
  .site-nav {
    order: 4;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 14px;
    gap: 2px;
    display: none;
    box-shadow: var(--shadow);
  }
  .site-header.nav-open .site-nav { display: flex; }
  .site-nav a { padding: 12px 10px; }
  .hero { padding: 28px 20px 4px; }

  html.gk-fullscreen.gk-fs-tight {
    --board-size: min(92vw, calc(100dvh - var(--gk-anchor-h, 0px) - 160px), 480px);
  }
  html.gk-fullscreen.gk-fs-tight .qn-mark { font-size: 0.9em; }
}

@media (prefers-reduced-motion: reduce) {
  .qn-cell.conflict.has-queen .qn-mark { animation: none; }
  .qn-overlay.show .qn-cheer svg { animation: none; opacity: 1; }
  .qn-overlay-card { animation: none; }
}

/* ----- fullscreen board layout (queens-specific, media-independent) ----- */
html.gk-fullscreen .queens { display: flex; flex-direction: column; flex: 1; min-height: 0; }
html.gk-fullscreen .qn-boardwrap { flex-shrink: 0; }
html.gk-fullscreen .qn-message { flex: 1; min-height: 0; overflow-y: auto; }
html.gk-fullscreen .play-section > *:not(.queens) { display: none; }
html.gk-fullscreen .ezoicad { display: none; }
html.gk-fullscreen.gk-fs-tight .queens { gap: var(--gk-space-2); }
html.gk-fullscreen.gk-fs-tight .qn-toolbar { padding-bottom: 4px; }
html.gk-fullscreen.gk-fs-tight .qn-stat-val { font-size: var(--gk-fs-md); }
html.gk-fullscreen.gk-fs-tight .qn-actions { margin-top: 0; }
html.gk-fullscreen.gk-fs-tight .qn-actions .btn { min-height: 34px; padding: 4px 14px; font-size: var(--gk-fs-sm); }
html.gk-fullscreen.gk-fs-tight .qn-settings { margin-top: 0; }
html.gk-fullscreen.gk-fs-tight .qn-toggle { font-size: var(--gk-fs-sm); }
html.gk-fullscreen.gk-fs-tight .qn-message { min-height: 0; font-size: var(--gk-fs-sm); }

/* ============================================================================
 * Ranked 1v1 (Phase 2a): arena lobby, match room, countdown + result overlays,
 * home top-players widget.
 * ========================================================================== */

/* ----- arena lobby ----- */
.rk-arena { padding: 8px 20px 20px; }
.rk-columns { display: grid; gap: var(--gk-space-4); grid-template-columns: 1fr; }
@media (min-width: 900px) { .rk-columns { grid-template-columns: minmax(0, 1fr) 280px; align-items: start; } }
.rk-main { display: flex; flex-direction: column; gap: var(--gk-space-4); min-width: 0; }
.rk-side { display: flex; flex-direction: column; gap: var(--gk-space-4); }
.rk-panel { min-width: 0; }
.rk-panel h2 { margin-top: 0; }
.rk-features { margin: 0.6em 0; padding-left: 1.2em; }
.rk-features li { margin: 0.3em 0; }

.rk-me { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: var(--gk-space-3); }
.rk-me-rating { display: flex; align-items: baseline; gap: 8px; }
.rk-me-num { font-family: var(--display); font-size: var(--gk-fs-2xl); color: var(--accent); line-height: 1; }
.rk-me-tier { font-size: var(--gk-fs-md); color: var(--ink-soft); }
.rk-me-record { font-size: var(--gk-fs-sm); color: var(--ink-soft); }

.rk-cards { display: grid; gap: var(--gk-space-3); grid-template-columns: 1fr; }
@media (min-width: 560px) { .rk-cards { grid-template-columns: 1fr 1fr; } }
.rk-card { border: 1px solid var(--line); border-radius: var(--radius); padding: var(--gk-space-3); background: var(--gk-surface-2); }
.rk-card h3 { margin: 0 0 0.3em; }
.rk-card p { margin: 0 0 0.8em; font-size: var(--gk-fs-sm); color: var(--ink-soft); }
.rk-status { min-height: 1.2em; font-size: var(--gk-fs-sm); color: var(--ink-soft); margin: 0.6em 0 0; }
.rk-timeout { margin-top: 0.6em; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rk-challenge-out { margin-top: 0.6em; display: flex; gap: 8px; }
.rk-url { flex: 1; min-width: 0; font: inherit; font-size: var(--gk-fs-sm); padding: 8px 10px; border: 1px solid var(--gk-line-strong); border-radius: 10px; background: var(--card); color: var(--ink); }

/* ----- ladder table ----- */
.rk-ladder-table { width: 100%; border-collapse: collapse; font-size: var(--gk-fs-sm); }
.rk-ladder-table th, .rk-ladder-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.rk-ladder-table th { color: var(--ink-soft); font-weight: 600; }
.rk-ladder-table td:first-child, .rk-ladder-table th:first-child { width: 2.5em; color: var(--ink-soft); }
.rk-empty { color: var(--ink-soft); font-size: var(--gk-fs-sm); }

/* ----- tier list ----- */
.rk-tiers { list-style: none; margin: 0 0 0.8em; padding: 0; }
.rk-tiers li { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: var(--gk-fs-sm); }
.rk-tier-name { font-weight: 600; }
.rk-tier-range { color: var(--ink-soft); }

/* ----- home top-players widget ----- */
.rk-home { padding: 8px 20px; }
.rk-home-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.rk-home-head h2 { margin: 0.6em 0 0.4em; }
.rk-home-top { list-style: none; margin: 0 0 0.6em; padding: 0; }
.rk-home-top li { display: grid; grid-template-columns: 2em 1fr auto auto; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
.rk-home-rank { color: var(--ink-soft); }
.rk-home-tier { color: var(--ink-soft); font-size: var(--gk-fs-sm); }
.rk-home-rating { font-family: var(--display); color: var(--accent); }

/* ----- match room: seats + progress bars ----- */
.rk-room { position: relative; }
.rk-room-bar { display: flex; align-items: center; gap: 12px; margin: 0 auto var(--gk-space-3); max-width: var(--board-size); }
.rk-seat { flex: 1; min-width: 0; }
.rk-seat-label { display: block; font-size: var(--gk-fs-sm); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rk-seat-opp { text-align: right; }
.rk-vs { color: var(--ink-soft); font-size: var(--gk-fs-sm); }
.rk-progress { height: 8px; border-radius: 999px; background: var(--gk-surface-2); border: 1px solid var(--line); overflow: hidden; margin: 4px 0; }
.rk-progress-bar { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.25s ease; }
.rk-progress-opp { background: var(--gk-warn); }
.rk-seat-count { font-size: var(--gk-fs-sm); color: var(--ink-soft); }

/* Hints, the reveal-solution menu, and the how-to button have no place in a
 * ranked race — hide them on the shared board template. */
.rk-room .qn-menu,
.rk-room .gk-howto-btn,
.rk-room .qn-actions [data-action="hint"],
.rk-room .qn-stats .qn-stat:nth-child(3) { display: none; }

/* ----- countdown overlay ----- */
.rk-board-wrap { position: relative; }
.rk-countdown {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px;
  background: rgba(11, 16, 32, 0.55); backdrop-filter: blur(2px);
  border-radius: var(--radius); z-index: 5; color: #fff;
}
.rk-countdown-num { font-family: var(--display); font-size: clamp(3rem, 18vw, 7rem); line-height: 1; }
.rk-countdown-label { font-size: var(--gk-fs-md); opacity: 0.9; }

/* ----- result overlay ----- */
.rk-result {
  position: fixed; inset: 0; z-index: 50; display: flex; align-items: center;
  justify-content: center; padding: 20px; background: rgba(11, 16, 32, 0.6);
}
.rk-result-card { max-width: 440px; width: 100%; text-align: center; }
.rk-result-card h2 { margin-top: 0.2em; }
.rk-result-badge { display: inline-block; font-size: var(--gk-fs-sm); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin: 0; }
.rk-result-sub { color: var(--ink-soft); margin: 0.2em 0 1em; }
.rk-result-times { display: flex; justify-content: center; gap: 28px; margin: 0 0 1em; }
.rk-result-times dt { font-size: var(--gk-fs-sm); color: var(--ink-soft); }
.rk-result-times dd { margin: 0.1em 0 0; font-family: var(--display); font-size: var(--gk-fs-lg); }
.rk-rating-move { display: flex; align-items: baseline; justify-content: center; gap: 12px; margin: 0 0 1em; flex-wrap: wrap; }
.rk-delta { font-family: var(--display); font-size: var(--gk-fs-xl); }
.rk-delta.rk-up { color: var(--ok); }
.rk-delta.rk-down { color: #dc2626; }
.rk-newrating { font-weight: 600; }
.rk-newtier { color: var(--ink-soft); }
.rk-result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) {
  .rk-progress-bar { transition: none; }
}

/* ----- Beat the Clock ----- */
.btc-modes {
  display: grid; gap: var(--gk-space-3);
  grid-template-columns: 1fr;
  margin-bottom: var(--gk-space-4);
}
@media (min-width: 640px) {
  .btc-modes { grid-template-columns: 1fr 1fr; }
}
.btc-mode-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
  text-align: left; padding: var(--gk-space-3);
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--gk-surface-2); cursor: pointer; color: inherit;
  font: inherit;
}
.btc-mode-card:hover { border-color: var(--accent); background: var(--accent-soft); }
.btc-mode-name { font-family: var(--display); font-size: var(--gk-fs-lg); color: var(--accent); }
.btc-mode-bonus { font-weight: 700; }
.btc-mode-sizes, .btc-mode-blurb { font-size: var(--gk-fs-sm); color: var(--ink-soft); }

.btc-hud {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 12px 18px; margin-bottom: var(--gk-space-3);
  padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--gk-surface-2); width: var(--board-size, 100%); max-width: 100%;
}
.btc-hud-stat { display: flex; flex-direction: column; align-items: center; min-width: 4.5em; }
.btc-hud-label { font-size: var(--gk-fs-xs); color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.04em; }
.btc-hud-val { font-family: var(--display); font-size: var(--gk-fs-lg); line-height: 1.1; }
.btc-time.btc-urgent {
  color: #dc2626;
  animation: btc-pulse 0.8s ease-in-out infinite;
}
@keyframes btc-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}
@media (prefers-reduced-motion: reduce) {
  .btc-time.btc-urgent { animation: none; }
}

.btc-end-screen { max-width: 520px; margin: 0 auto var(--gk-space-4); text-align: center; }
.btc-end-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px;
  margin: 1em 0; text-align: center;
}
.btc-end-stats dt { font-size: var(--gk-fs-sm); color: var(--ink-soft); }
.btc-end-stats dd { margin: 0.15em 0 0; font-family: var(--display); font-size: var(--gk-fs-lg); }
.btc-share-line { color: var(--ink-soft); font-size: var(--gk-fs-sm); }
.btc-lb-section { margin-top: var(--gk-space-4); }
.btc-lb-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0.8em 0 1em; }
.btc-lb-tab {
  border: 1px solid var(--line); background: var(--gk-surface); border-radius: 999px;
  padding: 4px 12px; font: inherit; cursor: pointer; color: inherit;
}
.btc-lb-tab.current { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }
.btc-lb-table { width: 100%; }
.btc-daily-intro { max-width: 520px; margin: 0 auto; text-align: center; }
.btc-daily-intro h2 { margin-top: 0.2em; }