/* zigzag play app. Colours come from css/theme.css (light and dark); no hex literals here.
   Layout: phones first (one column); the menu is a two-column dashboard from 1000 px up, the game's board
   and its actions side by side from 900 px up. Pointer devices get popovers, touch devices get bottom sheets
   (src/ui/info.js). */

* { box-sizing: border-box; }

/* Boxes that hold lines of text, a popover or a nested card take these radii, not the theme's raw ones: a theme's 999px (a pill) is for one-line
   controls and would cut the corners of a box through its text. Cards (--r-3) and sheets (--r-4) are bounded by the template (<= 40 px) and
   padded for it. --bw-sub: the border of what sits inside or above a card (a card itself may be a thick frame, --bw-card up to 8 px). */
:root {
  --rb-1: min(var(--r-1), 16px);
  --rb-2: min(var(--r-2), 18px);
  --rb-tile: min(var(--r-tile), 20px);
  --rb-3: min(var(--r-3), 20px);   /* the top corners of the action bar fixed to the bottom edge: buttons sit 8-10 px from them */
  --bw-sub: min(var(--bw-card), 3px);
}

html {
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation; /* no double-tap zoom on buttons; pinch zoom still works */
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  color: var(--text);
  background: var(--bg-image), radial-gradient(1200px 420px at 50% -80px, var(--bg-top), transparent 70%), var(--bg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
}
body.sheet-open { overflow: hidden; }

h2 {
  margin: 0; color: var(--heading); line-height: 1.25;
  font-family: var(--font-head); font-weight: var(--fw-head); text-transform: var(--tt-head); letter-spacing: var(--ls-head);
}
p { margin: 0; }
b { color: var(--heading); font-variant-numeric: tabular-nums; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
button, select, input { font-family: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- top bar ---------- */

.app-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: env(safe-area-inset-top, 0);
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: var(--bar-bw) solid var(--line);
}
.app-bar-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 1200px;
  min-height: var(--bar-h);
  margin: 0 auto;
  padding: 0 var(--pad);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--heading);
  font-family: var(--font-head);
  font-weight: calc(var(--fw-head) + 100);
  font-size: 1.3rem;
  text-transform: var(--tt-head);
  letter-spacing: var(--ls-head);
  text-decoration: none;
}
.brand-name { min-width: 0; white-space: nowrap; }
/* the Chinese name has its own face in a theme (themes/README.md, two glyphs cut for it): never faked bold or italic */
.brand-name:lang(zh) { font-family: var(--font-zh); font-synthesis: none; }
.logo { flex: none; width: var(--logo); height: var(--logo); }
/* the brand mark: the shared variety-Z in two files (light, dark), or the inline mark of the active theme's art */
.brand-mark { display: flex; flex: none; }
.logo-dark { display: none; }
:root[data-mode="dark"] .logo-light { display: none; }
:root[data-mode="dark"] .logo-dark { display: block; }
.brand-art { display: block; width: var(--logo); height: var(--logo); }
.brand-art svg { display: block; width: 100%; height: 100%; }
:root .brand-mark.has-art .logo { display: none; }

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: var(--icon-btn);
  height: var(--icon-btn);
  padding: 0;
  border: var(--bw) solid var(--line);
  border-radius: var(--r-icon);
  background: var(--surface);
  color: var(--accent-text);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.icon-btn svg { width: var(--glyph); height: var(--glyph); }
.icon-btn:hover { background: var(--accent-soft); border-color: var(--accent); }
.lang-toggle { font-size: 0.85rem; font-weight: 800; letter-spacing: 0; }
.lang-toggle[data-on="en"] span { font-size: 1.05rem; line-height: 1; } /* the glyph shown is the other language: 中 while English is on */
.sound-toggle.muted { color: var(--muted); }
.sound-toggle.muted .sound-waves { display: none; }
.sound-toggle.muted .sound-x { display: block !important; }
.theme-toggle .ico-sun { display: none; }
:root[data-mode="dark"] .theme-toggle .ico-sun { display: block; }
:root[data-mode="dark"] .theme-toggle .ico-moon { display: none; }
/* a pool beyond light and dark: the button shows the glyph of the theme it switches to */
:root .theme-toggle[data-custom] .ico-sun, :root .theme-toggle[data-custom] .ico-moon { display: none; }
.theme-symbol { width: var(--glyph); height: var(--glyph); }
/* the pool picker (src/ui/theme-picker.js): a menu under the theme button, once the pool holds three or more themes */
.theme-picker {
  position: fixed; z-index: 130; min-width: 220px; max-width: calc(100vw - 16px); padding: 6px;
  background: var(--pop-bg); border: var(--bw-sub) var(--bs-card) var(--line); border-radius: var(--r-3); box-shadow: var(--pop-shadow);
}
.theme-picker-title { padding: 6px 10px 8px; font-size: 0.78rem; font-weight: 700; color: var(--muted); }
.theme-picker button {
  display: flex; align-items: center; gap: 10px; width: 100%; min-height: calc(var(--ctl-h) - 4px); padding: 6px 10px;
  border: 0; border-radius: var(--r-2); background: transparent; color: var(--text); font: inherit; text-align: left; cursor: pointer;
}
.theme-picker button:hover, .theme-picker button:focus-visible { background: var(--accent-soft); outline: none; }
.theme-picker button.current { background: var(--accent-soft); color: var(--accent-text); font-weight: 700; }
.theme-picker svg { flex: none; width: var(--glyph); height: var(--glyph); }
.theme-picker .theme-name { flex: 1; min-width: 0; }
.theme-picker .theme-swatches, .theme-offer .theme-swatches { display: flex; gap: 3px; }
.theme-picker .theme-swatches i, .theme-offer .theme-swatches i { width: 10px; height: 18px; border-radius: 3px; box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--text) 25%, transparent); }
.theme-picker { max-height: calc(100vh - 80px); overflow-y: auto; }
.theme-picker-empty { padding: 6px 10px; font-size: 0.85rem; color: var(--muted); }
/* the public rule of the offer days, under the list (src/themes/picker.js pickerRuleHtml) */
.theme-picker-rule { margin-top: 6px; padding-top: 6px; border-top: var(--bw-card) solid var(--line); }
.theme-picker-rule p { max-width: 260px; margin: 0; padding: 4px 10px 2px; font-size: 0.8rem; color: var(--muted); }
.theme-picker .tip-i {
  flex: none; display: inline-grid; place-items: center; width: 24px; height: 24px;
  border: 2px solid var(--accent-text); border-radius: 50%; color: var(--accent-text);
  font: italic 700 0.8rem/1 Georgia, serif;
}
/* the dev reveal: every theme of the site's pool below the player's own (src/ui/theme-picker.js) */
.theme-dev { margin-top: 6px; padding-top: 6px; border-top: var(--bw-sub) solid var(--line); }
.theme-dev-row { display: flex; align-items: stretch; gap: 4px; }
.theme-dev-row > button:first-child { flex: 1; min-width: 0; }
.theme-picker .theme-keep { flex: none; width: auto; justify-content: center; padding: 6px 14px; font-weight: 700; color: var(--accent-text); }
.theme-picker .theme-offer-now { margin-top: 4px; font-weight: 700; color: var(--accent-text); }
.theme-draft { padding: 0 6px; border: 1px solid var(--line-strong); border-radius: var(--r-chip); font-size: 0.72rem; font-style: normal; font-weight: 400; color: var(--muted); }
/* the offer sheet (src/ui/theme-offer.js): a theme is on trial; keep it or leave it. Small and at the bottom, so the page shows the theme */
.theme-offer {
  position: fixed; z-index: 55; left: 50%; bottom: max(8px, env(safe-area-inset-bottom)); transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; width: min(440px, calc(100vw - 16px)); padding: 12px;
  background: var(--pop-bg); border: var(--bw-sub) var(--bs-card) var(--line-strong); border-radius: var(--r-3); box-shadow: var(--pop-shadow); color: var(--text);
}
/* the chip (src/ui/theme-offer.js): the offer folded small, top right under the app bar; shown on menu screens only */
.theme-chip {
  position: fixed; z-index: 55; right: 8px; top: calc(env(safe-area-inset-top, 0px) + var(--bar-h) + 6px);
  display: inline-flex; align-items: center; gap: 8px; max-width: calc(100vw - 16px); padding: 6px 12px; cursor: pointer;
  background: var(--pop-bg); border: var(--bw-sub) solid var(--line-strong); border-radius: 999px; box-shadow: var(--pop-shadow);
  color: var(--text); font: inherit; font-size: 0.85rem; line-height: 1.2;
}
.theme-chip[hidden] { display: none; }
.theme-chip svg { flex: none; width: 18px; height: 18px; }
.theme-chip [data-left] { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--muted); }
.theme-chip-pending { color: var(--accent-text); border-color: var(--accent); }
.theme-chip:hover, .theme-chip:focus-visible { background: var(--accent-soft); outline: none; }
.theme-offer[hidden] { display: none; }
.theme-offer-min { flex: none; display: inline-grid; place-items: center; width: 32px; height: 32px; padding: 0; cursor: pointer; background: transparent; border: 0; border-radius: var(--r-2, 8px); color: var(--muted); }
.theme-offer-min svg { width: 18px; height: 18px; }
.theme-offer-min:hover, .theme-offer-min:focus-visible { background: var(--accent-soft); color: var(--text); outline: none; }
.theme-toast {
  position: fixed; z-index: 56; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); transform: translateX(-50%);
  width: max-content; max-width: calc(100vw - 32px); padding: 10px 16px; text-align: center; font-size: 0.9rem;
  background: var(--pop-bg); border: var(--bw-sub) var(--bs-card) var(--line-strong); border-radius: var(--r-3); box-shadow: var(--pop-shadow); color: var(--text);
}
.notice {
  position: fixed; z-index: 57; left: 50%; bottom: calc(max(16px, env(safe-area-inset-bottom)) + 52px); transform: translateX(-50%);
  display: flex; align-items: flex-start; gap: 10px; width: min(420px, calc(100vw - 32px)); padding: 10px 12px 10px 16px;
  font-size: 0.9rem; line-height: 1.4; background: var(--pop-bg); border: var(--bw-sub) var(--bs-card) var(--line-strong);
  border-radius: var(--r-3); box-shadow: var(--pop-shadow); color: var(--text);
}
.notice-bad { border-color: var(--danger); }
.notice-ok { border-color: var(--ok); }
.notice-text { flex: 1 1 0; min-width: 0; overflow-wrap: anywhere; }
.notice-close { flex: none; width: 28px; height: 28px; padding: 0; font-size: 1.2rem; line-height: 1; cursor: pointer; background: transparent; border: 0; border-radius: var(--r-2, 8px); color: var(--muted); }
.notice-close:hover, .notice-close:focus-visible { background: var(--accent-soft); color: var(--text); outline: none; }
.theme-offer-head { display: flex; align-items: center; gap: 10px; }
.theme-offer-head > svg, .theme-offer-list svg { flex: none; width: var(--glyph); height: var(--glyph); }
.theme-offer-title { display: flex; flex: 1; flex-direction: column; min-width: 0; line-height: 1.25; }
.theme-offer-title span { font-size: 0.78rem; color: var(--muted); }
.theme-offer-text { margin: 0; font-size: 0.9rem; color: var(--muted); }
.theme-offer-text [data-left] { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text); }
.theme-offer-rule { display: flex; align-items: flex-start; gap: 8px; margin: 0; font-size: 0.82rem; color: var(--muted); }
.theme-offer-rule .tip-btn { margin-left: auto; }
.sheet-body .theme-rule-steps { margin: 8px 0; padding-left: 1.3em; }
.sheet-body .theme-rule-steps li { margin: 4px 0; }
.sheet-body .theme-rule-example { color: var(--muted); }
.theme-offer-actions { display: flex; justify-content: flex-end; gap: 8px; }
.theme-offer-list { display: flex; flex-direction: column; gap: 4px; }
.theme-offer-list button {
  display: flex; align-items: center; gap: 10px; width: 100%; min-height: calc(var(--ctl-h) - 4px); padding: 6px 10px;
  border: var(--bw-sub) solid var(--line); border-radius: var(--r-2); background: var(--surface-2); color: var(--text); font: inherit; text-align: left; cursor: pointer;
}
.theme-offer-list button:hover, .theme-offer-list button:focus-visible { background: var(--accent-soft); outline: none; }
.theme-offer-list .theme-name { flex: 1; min-width: 0; }

/* ---------- page, cards ---------- */

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px var(--pad) 48px;
}

.card {
  margin-bottom: 16px;
  padding: var(--pad);
  background: var(--surface);
  border: var(--bw-card) var(--bs-card) var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-title { font-size: 1.3rem; margin-bottom: 2px; overflow-wrap: anywhere; }
.blurb { margin: 0 0 14px; color: var(--muted); }
.small { font-size: 0.9rem; color: var(--muted); }
.note { margin-top: 12px; padding: 10px 14px; border-radius: var(--rb-1); background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.note.error { background: var(--danger-bg); color: var(--danger); }
.storage-note { margin-top: 14px; }
.btn-hint { margin: 8px 2px 0; font-size: 0.85rem; color: var(--muted); }

.card-head { display: flex; align-items: center; gap: 14px; min-width: 0; margin-bottom: 12px; }
.card-head-text { min-width: 0; }
.card-sub { font-size: 0.9rem; color: var(--muted); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.card-badge {
  display: grid;
  flex: none;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-1);
  background: var(--accent-soft);
  color: var(--accent-text);
}
.card-icon { width: 24px; height: 24px; }

/* ---------- buttons and inputs ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  min-height: var(--ctl-h);
  padding: 10px 20px;
  border: var(--bw) solid var(--accent);
  border-radius: var(--r-2);
  background: var(--accent);
  color: var(--on-accent);
  font: inherit;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-wrap: balance;
  overflow-wrap: anywhere;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:active { transform: scale(0.98); }
.btn:not(.secondary) { box-shadow: var(--shadow-btn); }
.btn.secondary { background: var(--surface-2); border-color: var(--line-strong); color: var(--accent-text); }
.btn.secondary:hover { background: var(--accent-soft); border-color: var(--accent); }
.btn.secondary.active { background: var(--accent-soft); border-color: var(--accent); }
.btn:disabled { opacity: 0.5; cursor: default; transform: none; }
.btn:disabled:hover { background: var(--accent); border-color: var(--accent); }
.btn.secondary:disabled { opacity: 1; background: var(--surface-2); border: 2px dashed var(--line-strong); color: var(--muted); }
.btn.secondary:disabled:hover { background: var(--surface-2); border-color: var(--line-strong); }
.btn .bi { flex: none; width: 18px; height: 18px; }

.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.button-row .btn { flex: 1 1 130px; }

.field { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-bottom: 14px; }
.field-label { font-weight: 700; color: var(--heading); }
select {
  min-width: 0;
  max-width: 100%;
  min-height: var(--ctl-h);
  padding: 8px 40px 8px 16px;
  border: var(--bw) solid var(--line-strong);
  border-radius: var(--r-1);
  background-color: var(--surface-2);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1.5l6 6 6-6' fill='none' stroke='%237f9cff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  color: var(--heading);
  font: inherit;
  font-weight: 700;
  -webkit-appearance: none;
  appearance: none;
  text-overflow: ellipsis;
  cursor: pointer;
}
select:focus { border-color: var(--accent); }
select option, select optgroup { background: var(--surface); color: var(--heading); }

/* ---------- status panel: replay chances + streak (menu) ---------- */

.status-panel { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.stat-item {
  position: relative; flex: 1 1 200px; display: flex; align-items: center; gap: 12px; min-width: 0; padding: 10px 14px;
  border: var(--bw) solid var(--line); border-radius: var(--rb-tile); background: var(--surface-2); color: var(--heading); font: inherit; text-align: left; cursor: help;
}
.stat-icon { flex: none; width: 28px; height: 28px; color: var(--muted); }
.stat-replay.ready { border-color: var(--accent); background: var(--accent-soft); }
.stat-replay.ready .stat-icon, .stat-replay .pip.on { color: var(--accent-text); }
.stat-streak.lit .stat-icon { color: var(--flame); }
.stat-streak.risk .stat-icon { animation: stat-pulse 1.6s ease-in-out infinite; }
@keyframes stat-pulse { 50% { opacity: 0.45; } }
.stat-main { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.stat-top { display: flex; align-items: baseline; gap: 6px; }
.stat-top b { font-size: 1.3rem; line-height: 1; }
.stat-top small, .stat-sub { font-size: 0.8rem; color: var(--muted); overflow-wrap: anywhere; }
.pips { display: flex; flex-wrap: wrap; gap: 4px; }
.pip { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.stat-replay .pip.on { background: var(--accent-text); }
.stat-streak .pip.on { background: var(--flame); }
.pips.week .pip:last-child { box-shadow: 0 0 0 2px var(--surface-2), 0 0 0 4px var(--flame-soft); } /* the 7th dot: the reward */
.freezes { display: flex; gap: 4px; }
.freeze { width: 16px; height: 16px; color: var(--line-strong); }
.freeze.on { color: var(--accent-text); }
.freeze-icon { display: block; width: 100%; height: 100%; }

/* ---------- info: popovers (pointer devices) and bottom sheets (touch), see src/ui/info.js ---------- */

.stat-tip, .variant-rules, .tip-pop {
  display: none; position: absolute; z-index: 30; padding: 11px 14px;
  border: var(--bw-sub) var(--bs-card) var(--line-strong); border-radius: var(--rb-2); background: var(--pop-bg); color: var(--text);
  box-shadow: var(--pop-shadow); font-size: 0.88rem; font-weight: 400; line-height: 1.45; letter-spacing: 0; text-align: left;
  overflow-wrap: anywhere;
}
.stat-tip::before, .variant-rules::before, .tip-pop::before {
  content: ""; position: absolute; top: -6px; left: var(--arrow, 50%); width: 10px; height: 10px; background: inherit;
  border-left: 1px solid var(--line-strong); border-top: 1px solid var(--line-strong); transform: translateX(-50%) rotate(45deg);
}
.stat-tip { left: 0; right: 0; top: calc(100% + 8px); }
.stat-tip::before { left: 34px; }
.stat-item.open .stat-tip, .stat-item:focus-visible .stat-tip { display: block; }
@media (hover: hover) { .stat-item:hover .stat-tip { display: block; } }
.variant-rules { left: 50%; top: calc(100% + 8px); width: 240px; max-width: calc(100vw - 16px); pointer-events: none; }
.variant-rules.show { display: block; }
.variant-rules b { color: var(--heading); }
.variant-rules .pop-title { display: block; margin-bottom: 2px; }
.variant-rules.above { top: auto; bottom: calc(100% + 8px); }
.variant-rules.above::before { top: auto; bottom: -6px; transform: translateX(-50%) rotate(225deg); }
.tip-pop { left: 0; top: calc(100% + 8px); width: min(100%, 360px); }
.tip-pop::before { left: 28px; }
.tip-btn:hover + .tip-pop, .tip-btn:focus-visible + .tip-pop, .tip-pop.open { display: block; }
.tip-btn {
  flex: none; width: 24px; height: 24px; margin-left: 8px; padding: 0; vertical-align: middle;
  border: 2px solid var(--accent-text); border-radius: 50%; background: var(--surface);
  color: var(--accent-text); font: italic 700 0.8rem/1 Georgia, serif; cursor: help;
}
.tip-btn:hover, .tip-btn[aria-expanded="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
@media (pointer: coarse) { .tip-btn { width: 32px; height: 32px; font-size: 0.95rem; } }
/* touch: no hover popovers; a long press on a tile peeks at its rules (.peek) while the finger stays down */
@media (hover: none) {
  .stat-tip, .tip-pop, .variant-rules { display: none !important; }
  .variant-rules.peek { display: block !important; }
}

.link-btn {
  padding: 2px 4px; border: 0; background: none; color: var(--accent-text); font: inherit; font-weight: 700; cursor: pointer;
}
.link-btn:hover { text-decoration: underline; }
@media (hover: hover) and (pointer: fine) { .rules-link { display: none; } } /* a pointer has the popover */

.sheet-backdrop {
  position: fixed; inset: 0; z-index: 300; display: flex; align-items: flex-end; justify-content: center; background: var(--backdrop);
  animation: sheet-fade 0.18s ease-out;
}
.sheet {
  width: 100%; max-width: 560px; max-height: 82vh; max-height: 82dvh; overflow: auto; overscroll-behavior: contain;
  padding: 10px 18px calc(18px + env(safe-area-inset-bottom, 0)); background: var(--surface); color: var(--text);
  border: var(--bw-card) var(--bs-card) var(--line); border-bottom: 0; border-radius: var(--r-4) var(--r-4) 0 0; box-shadow: var(--sheet-shadow);
  animation: sheet-up 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.sheet-grab { width: 42px; height: 5px; margin: 0 auto 14px; border-radius: 3px; background: var(--line-strong); }
.sheet-head { display: flex; align-items: center; gap: 14px; min-width: 0; }
.sheet-head .variant-icon { width: calc(60px * var(--vi-scale)); height: calc(60px * var(--vi-scale)); }
.sheet-glyph { flex: none; width: 44px; height: 44px; padding: 9px; border-radius: var(--r-2); background: var(--accent-soft); color: var(--accent-text); }
.sheet h2 { font-size: 1.2rem; overflow-wrap: anywhere; }
.sheet-body { margin: 12px 0 16px; font-size: 1rem; line-height: 1.55; overflow-wrap: anywhere; }
.sheet-body b { color: var(--heading); }
.sheet-body .lucky-week { margin-top: 10px; }
.sheet-body .lucky-week span { background: var(--surface-2); }
.sheet .btn { width: 100%; min-height: 50px; }
@keyframes sheet-up { from { transform: translateY(100%); } }
@keyframes sheet-fade { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .sheet, .sheet-backdrop { animation: none; } }

/* ---------- unlock chances and the lucky game ---------- */

.lucky-box { margin: 0 0 14px; border: var(--bw) solid var(--line); border-radius: var(--rb-tile); background: var(--surface-2); }
.lucky-box.ready { border-color: var(--warn-line); background: var(--warn-bg); }
.lucky-box .note { margin: 0; padding: 10px 12px; }
.lucky-row {
  position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 8px 12px;
}
.lucky-box > * + * { border-top: 1px solid var(--line); }
.lucky-row.reward { background: var(--accent-soft); border-radius: var(--rb-2) var(--rb-2) 0 0; }
.lucky-icon { flex: none; display: grid; place-items: center; }
.lucky-icon .variant-icon { width: calc(36px * var(--vi-scale)); height: calc(36px * var(--vi-scale)); }
.lucky-text { flex: 1 1 150px; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.lucky-text small { color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }
.lucky-head { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
.lucky-chances {
  display: inline-flex; align-items: center; gap: 4px; padding: 1px 9px; border-radius: var(--r-chip);
  background: var(--accent-soft); color: var(--muted); font-size: 0.8rem; font-weight: 700; white-space: nowrap;
}
.lucky-chances.has { background: var(--warn-bg); color: var(--warn); }
.lucky-chances .stat-icon { width: 14px; height: 14px; flex: none; color: inherit; }
button.lucky-chances { position: relative; border: 0; font-family: inherit; line-height: 1.5; cursor: help; }
.has-tip > .tip-pop { width: 290px; max-width: calc(100vw - 32px); left: -10px; font-size: 0.88rem; font-weight: 400; text-transform: none; white-space: normal; cursor: default; }
.has-tip > .tip-pop::before { left: 28px; }
.has-tip:focus-visible > .tip-pop, .has-tip > .tip-pop.open { display: block; }
@media (hover: hover) { .has-tip:hover > .tip-pop { display: block; } }
.lucky-row .tip-btn { flex: none; margin-left: 0; }
.lucky-row > .btn { flex: 0 0 auto; min-height: calc(var(--ctl-h) - 6px); padding: 6px 18px; background: var(--surface); border-color: var(--line-strong); color: var(--accent-text); }
.lucky-box.ready .lucky-row > .btn { border-color: var(--warn-line); color: var(--warn); }
.lucky-row.reward > .reward-buttons { flex: 1 1 100%; }
.reward-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.reward-buttons .btn { flex: 1 1 130px; }
.lucky-icon .stat-icon { width: 30px; height: 30px; color: var(--warn); }

/* the happiest-day gift: a pulsing button in the bar (every screen) and a toast under it; neither covers a running game's board */
.gift-btn { position: relative; border-color: var(--warn-line); background: var(--warn-bg); color: var(--warn); }
.gift-btn[hidden] { display: none; }
.gift-btn::after {
  content: ""; position: absolute; top: 1px; right: 1px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--orange); border: 2px solid var(--surface); animation: gift-pulse 1.8s ease-out infinite;
}
@keyframes gift-pulse { from { box-shadow: 0 0 0 0 color-mix(in srgb, var(--orange) 60%, transparent); } to { box-shadow: 0 0 0 9px transparent; } }
.gift-toast {
  position: fixed; z-index: 120; top: calc(env(safe-area-inset-top, 0px) + 64px); right: max(12px, env(safe-area-inset-right, 0px));
  display: flex; align-items: center; gap: 10px; width: min(380px, calc(100vw - 24px)); padding: 10px 12px;
  border: 2px solid var(--warn-line); border-radius: var(--rb-tile); background: var(--warn-bg); color: var(--text); box-shadow: var(--pop-shadow);
  animation: gift-in 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.gift-dev { margin: 0; padding: 8px 12px; color: var(--muted); font-variant-numeric: tabular-nums; line-height: 1.45; overflow-wrap: anywhere; }
.gift-days { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.gift-days span { padding: 3px 8px; border-radius: 8px; background: var(--surface-2); font-size: 0.78rem; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.gift-days .win { background: var(--orange); color: var(--on-orange); }
.gift-toast[hidden] { display: none; }
.gift-toast .stat-icon { flex: none; width: 28px; height: 28px; color: var(--warn); }
.gift-toast-text { flex: 1 1 0; min-width: 0; font-size: 0.9rem; font-weight: 600; line-height: 1.3; overflow-wrap: anywhere; }
.gift-toast .btn { flex: none; min-height: calc(var(--ctl-h) - 8px); padding: 4px 14px; }
.gift-toast .tip-btn { flex: none; margin-left: 0; }
.gift-toast.result { pointer-events: none; } /* the result of a tap during a game: the board below keeps taking presses */
@keyframes gift-in { from { opacity: 0; transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .gift-btn::after, .gift-toast { animation: none; } }
.menu-layout > .gift-box { grid-area: gift; margin: 0; } /* the happiest-day gift: its own row above the cards, on both tabs */
.lucky-week { display: flex; gap: 4px; margin-top: 8px; }
.lucky-week span { flex: 1 1 0; min-width: 0; padding: 3px 0; border-radius: 8px; background: var(--surface-2); text-align: center; line-height: 1.25; }
.lucky-week b, .lucky-week small { display: block; font-size: 0.72rem; }
.lucky-week b { font-weight: 700; }
.lucky-week .win { background: var(--orange); color: var(--on-orange); }
.lucky-week .win b, .lucky-week .win small { color: inherit; }
.lucky-chip { margin-left: 8px; padding: 2px 10px; border-radius: 999px; background: var(--warn-bg); color: var(--warn); font-size: 0.75rem; font-weight: 800; }
.lucky-once { margin: 12px 0 0; }
.lucky-result {
  display: flex; align-items: center; gap: 10px; margin-top: 12px; padding: 10px 14px; border-radius: var(--rb-1);
  background: var(--ok-bg); color: var(--ok); font-weight: 700;
}
.lucky-result.same { background: var(--accent-soft); color: var(--accent-text); }
.lucky-result.heal { background: var(--heal-bg); color: var(--heal); }
.replay-heal { color: var(--heal); font-weight: 600; }
.lucky-result .variant-icon { flex: none; width: calc(36px * var(--vi-scale)); height: calc(36px * var(--vi-scale)); }

/* ---------- menu ---------- */

/* Dashboard: the rules line, then Today (Game of Day) beside Free play, then the games shared with the player as a strip.
   One column below 1000 px; on a phone the shared games sit between the two cards as a one-line banner. */
.menu-layout {
  display: grid;
  grid-template-columns: minmax(300px, 4fr) minmax(0, 8fr);
  grid-template-areas: "intro intro" "today play" "shared shared";
  gap: var(--gap) 16px;
  align-items: stretch;
}
.menu-layout.has-gift { grid-template-areas: "intro intro" "gift gift" "today play" "shared shared"; }
.menu-layout > .card, .menu-layout .play-col > .tab-pane > .card { margin: 0; }
.menu-intro { grid-area: intro; max-width: none; font-size: 0.95rem; color: var(--muted); }
.howto { grid-area: intro; }
.howto summary { list-style: none; cursor: pointer; color: var(--accent-text); font-weight: 700; font-size: 0.92rem; padding: 2px 0; }
.howto summary::-webkit-details-marker { display: none; }
.howto summary::after { content: " \25BE"; }
.howto[open] summary::after { content: " \25B4"; }
.howto p { margin-top: 4px; color: var(--muted); font-size: 0.92rem; }
.howto { display: none; } /* a phone shows the rules line folded (below); the others show it as plain text */
.gotd-card { grid-area: today; display: flex; flex-direction: column; background: linear-gradient(160deg, var(--surface) 45%, var(--warn-bg) 230%); }
.play-col { grid-area: play; position: relative; display: grid; min-width: 0; }
.play-col > .tab-pane { min-width: 0; }
.play-col > .tab-pane > .card { height: 100%; }
.tab-pane[hidden] { display: none; }
.shared-card { grid-area: shared; }
/* Patchwork (src/coop): a strip across the page while it is revealed: name, rules line, Open. Auto-placed after the other cards. */
.coop-card { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr) auto; align-items: center; gap: 12px 24px; }
.coop-card .card-head { margin: 0; }
.coop-card .blurb { margin: 0; }
.coop-card .button-row { margin: 0; }
.coop-card .btn { min-width: 150px; min-height: 48px; }

/* The device sync (src/platform/sync): one line until opened (a header that is a button), then a body that stacks. */
.sync-card { margin: 16px 0 0; padding: 0; overflow: hidden; }
@media (max-width: 520px) {
  .sync-card { margin-top: 10px; }
  .sync-pill-off, .sync-pill-on, .sync-pill-busy { display: none; } /* the chevron says "opens"; problems and questions keep their pill */
}
.sync-head { display: flex; align-items: center; gap: 12px; width: 100%; min-height: 56px; padding: 8px 14px; box-sizing: border-box; font: inherit; text-align: left; color: inherit; background: transparent; border: 0; cursor: pointer; }
.sync-head-static { cursor: default; }
button.sync-head:hover { background: var(--accent-soft); }
button.sync-head:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.sync-head .card-badge { width: 36px; height: 36px; }
.sync-head .card-icon { width: 20px; height: 20px; }
.sync-head-text { flex: 1 1 0; min-width: 0; display: grid; gap: 1px; }
.sync-card .card-title { margin: 0; font-size: 1.05rem; line-height: 1.25; }
.sync-card .card-sub { font-size: 0.85rem; line-height: 1.3; overflow-wrap: anywhere; }
.sync-problem .card-sub { color: var(--danger); font-weight: 600; }
.sync-pill { flex: none; padding: 4px 12px; font-size: 0.85rem; font-weight: 700; border-radius: 999px; background: var(--accent-soft); color: var(--accent-text); }
.sync-pill-problem { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.sync-chevron { flex: none; font-size: 1.5rem; line-height: 1; color: var(--muted); transition: transform 0.15s ease; }
.sync-card.open .sync-chevron { transform: rotate(90deg); }
.sync-body { display: grid; gap: 10px; padding: 12px 14px 14px; border-top: 1px solid var(--line); }
.sync-body > * { margin: 0; min-width: 0; }
.sync-body .blurb { font-size: 0.92rem; line-height: 1.4; }
.sync-options { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.sync-option { display: grid; gap: 3px; align-content: start; width: 100%; padding: 10px 12px; font: inherit; text-align: left; color: inherit; cursor: pointer; background: var(--surface-2); border: 1px solid var(--line-strong); border-radius: var(--rb-1); }
.sync-option:hover, .sync-option:focus-visible { background: var(--accent-soft); border-color: var(--accent); outline: none; }
.sync-option-title { font-size: 0.95rem; font-weight: 700; color: var(--accent-text); overflow-wrap: anywhere; }
.sync-option-hint { font-size: 0.82rem; line-height: 1.35; color: var(--muted); overflow-wrap: anywhere; }
.sync-actions { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.sync-actions .btn { width: 100%; min-height: 44px; padding: 8px 14px; }
.sync-more { display: grid; gap: 8px; padding-top: 12px; border-top: 1px dashed var(--line-strong); }
.sync-more-title { margin: 0; font-size: 0.85rem; font-weight: 700; color: var(--muted); }
.sync-peers { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.sync-peers li { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: var(--rb-1); background: var(--surface-2); }
.sync-peers span { min-width: 0; overflow-wrap: anywhere; }
.sync-peers small { flex: none; color: var(--muted); }
.sync-link { width: 100%; box-sizing: border-box; padding: 10px 12px; font: inherit; font-size: 0.85rem; color: inherit; border: 1px solid var(--line-strong); border-radius: var(--rb-1); background: var(--surface-2); }
.sync-phrase { padding: 12px; font-size: 1.15rem; line-height: 1.6; letter-spacing: 0.02em; word-spacing: 0.35em; text-align: center; overflow-wrap: anywhere; user-select: all; border: 1px solid var(--line-strong); border-radius: var(--rb-1); background: var(--surface-2); }
.sync-phrase-field { resize: vertical; min-height: 3.2em; }
.sync-privacy { font-size: 0.75rem; line-height: 1.4; color: var(--muted); }
.sync-note { font-size: 0.85rem; line-height: 1.35; color: var(--muted); }
.sync-note.bad { color: var(--danger); }
.sync-note.ok { color: var(--ok); }
.sync-off.armed { color: var(--danger); border-color: var(--danger); }

.gotd-card .blurb { margin-bottom: 12px; }
.gotd-card .button-row .btn { min-height: 48px; }
.gotd-card .status-panel { margin-top: auto; padding-top: 14px; flex-direction: column; gap: 10px; }
.gotd-card .stat-item { flex: none; width: 100%; }
.gotd-card .storage-note { margin-top: 10px; }

/* Flat | 3D: only when a 3D kind is unlocked or released (solid.available()); laid over the right end of the card head */
.play-tabs {
  position: absolute; top: 16px; right: 18px; z-index: 3; display: inline-flex; padding: 3px;
  border: 1px solid var(--line); border-radius: var(--r-1); background: var(--surface-2);
}
.play-tabs button {
  min-height: 34px; padding: 4px 16px; border: 0; border-radius: 9px; background: none; color: var(--muted);
  font: inherit; font-weight: 700; cursor: pointer;
}
.play-tabs button[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.play-col.has-tabs .card-head { padding-right: 140px; }

/* Free play and 3D cards: type tiles, a caption for the one picked, then size and Play on one row */
.variant-picker { min-width: 0; margin: 0 0 8px; padding: 0; border: 0; }
.variant-picker legend { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.menu-caption { margin: 0 0 12px; min-height: 1.5em; font-size: 0.9rem; color: var(--muted); overflow-wrap: anywhere; }
.menu-caption b { color: var(--heading); }
.play-bar { display: flex; align-items: center; gap: 14px; }
.play-bar .size-field { flex: 1 1 auto; min-width: 0; margin: 0; flex-wrap: nowrap; gap: 12px; }
.play-bar .size-field .field-label { flex: none; }
.play-bar select { flex: 1 1 auto; max-width: 260px; }
.play-bar .button-row { flex: 0 0 210px; }
.play-bar .btn { width: 100%; min-height: 50px; }

/* Puzzle type: tiles, each an icon of the board it plays and a name. The radio is stretched over its tile (invisible), so a tap
   anywhere selects it; the selected tile gets a blue frame and a check mark. Columns follow the width, rows follow the number of
   types (nine flat ones today), so a new type needs no layout change. The rules of a type are in its popover (hover or focus), its
   sheet (touch) and the caption under the grid. */
.variant-options { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--tile-min), 1fr)); gap: 10px; }
.variant-opt { position: relative; display: block; cursor: pointer; min-width: 0; }
/* a locked variant (dev reveal only): dashed, with a lock */
.variant-locked .variant-card { border-style: dashed; }
.variant-locked .variant-name::after { content: " \1F512"; font-size: 0.8em; }
.variant-opt input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.variant-card {
  position: relative;
  display: grid;
  grid-template-columns: calc(38px * var(--vi-scale)) minmax(0, 1fr);
  grid-template-areas: "icon name";
  align-items: center;
  column-gap: 8px;
  height: 100%;
  min-height: 60px;
  padding: 8px 6px 8px 8px;
  border: var(--bw) solid var(--line);
  border-radius: var(--rb-tile);
  background: var(--surface-2);
  text-align: left;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}
.variant-card .variant-icon { grid-area: icon; width: calc(38px * var(--vi-scale)); height: calc(38px * var(--vi-scale)); }
.variant-card::after {
  content: "\2713"; position: absolute; top: -7px; right: -7px; display: none; place-items: center; width: 18px; height: 18px;
  border-radius: 50%; background: var(--accent); color: var(--on-accent); font-size: 0.7rem; font-weight: 800; line-height: 1;
}
.variant-name { grid-area: name; min-width: 0; font-weight: 800; font-size: 0.88rem; color: var(--heading); line-height: 1.2; overflow-wrap: break-word; word-break: normal; hyphens: manual; }
/* a name wider than its tile (a wide display face): the theme sets --tile-min for its font (themes/README.md); break-word is the last resort, never a name across the border */
.variant-tag { display: none; }
.variant-opt input:checked + .variant-card {
  border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 24%, transparent);
}
.variant-opt input:checked + .variant-card::after { display: grid; }
.variant-opt input:focus-visible + .variant-card { outline: 3px solid var(--orange); outline-offset: 3px; }
@media (hover: hover) { .variant-opt input:not(:checked):hover + .variant-card { border-color: var(--line-strong); } }
.solid-card .variant-options { grid-template-columns: repeat(auto-fill, minmax(176px, 1fr)); }

/* The icons: a plate, tiles (a hole is a missing tile), the orange solution path with a dot on its two ends. Same classes at every
   size (picker, HUD, shared games, sheets). Colours: --icon-* in theme.css. */
.variant-icon { display: block; flex: none; width: calc(72px * var(--vi-scale)); height: calc(72px * var(--vi-scale)); }
.vi-bg { fill: var(--icon-plate); }
.vi-tile { fill: var(--icon-tile); stroke: var(--icon-line); stroke-width: 0.7; }
.vi-pentagons { stroke-linejoin: round; }
.vi-path { fill: none; stroke: var(--icon-path); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.vi-dot { fill: var(--icon-dot); stroke: var(--icon-tile); stroke-width: 1.2; }
/* the Two paths icon: a red and a blue path */
.vi-path-red { stroke: var(--b-red); }
.vi-path-blue { stroke: var(--b-blue); }
.vi-dot-red { fill: var(--b-red); }
.vi-dot-blue { fill: var(--b-blue); }
.vi-arrow { fill: var(--icon-ink); stroke: var(--icon-tile); stroke-width: 0.8; stroke-linejoin: round; paint-order: stroke; }
.vi-badge { fill: var(--icon-tile); stroke: var(--icon-dot); stroke-width: 1; } /* the Exact icon's step numbers */
.vi-num { fill: var(--icon-dot); font: 700 4.6px system-ui, sans-serif; text-anchor: middle; }
/* the Teleport icon: portals are rings with a core, the jump between them is dotted */
.vi-portal { fill: var(--icon-tile); stroke: var(--violet); stroke-width: 1.3; }
.vi-portal-core { fill: var(--violet); stroke: none; }
.vi-jump { fill: none; stroke: var(--icon-path); stroke-width: 1.7; stroke-linecap: round; stroke-dasharray: 0.1 3; }
.vi-q { fill: none; stroke: var(--icon-path); stroke-width: 3.2; stroke-linecap: round; } /* the lucky game's question mark */
.vi-qdot { fill: var(--icon-path); }
.vi-halo { stroke: var(--icon-tile); stroke-width: 6.4; fill: var(--icon-tile); }
.vi-q.vi-halo { fill: none; }
.vi-qdot.vi-halo { stroke-width: 3; }

.size-field { margin-bottom: 14px; }

/* ---------- shared games (saved from share links) ---------- */

/* A strip below the two cards: a header (count, tip, Show all), then up to three small cards in a row, each with Play and remove.
   Phone: a one-line banner that opens the list. */
.shared-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; row-gap: 10px; }
.shared-head { position: relative; display: flex; align-items: center; gap: 8px; grid-area: 1 / 1; min-width: 0; } /* anchors the tip */
.shared-eyebrow { font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-text); }
.shared-count {
  min-width: 22px; padding: 1px 7px; border-radius: 11px; background: var(--accent); color: var(--on-accent);
  font-size: 0.78rem; font-weight: 800; text-align: center;
}
.shared-head .tip-btn { margin-left: 0; }
.shared-card > .shared-state { grid-column: 1 / -1; margin: 0; }
.shared-more { grid-area: 1 / 2; min-height: calc(var(--ctl-h) - 10px); padding: 4px 14px; font-size: 0.88rem; }
.shared-list { grid-area: 2 / 1 / 3 / 3; margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 10px; }
.shared-item {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 10px 14px;
  border: var(--bw-sub) var(--bs-card) var(--line); border-radius: var(--rb-2); background: var(--surface-2);
}
.shared-item.is-new { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); background: var(--surface); }
.shared-info { min-width: 0; }
.shared-title { display: flex; align-items: center; gap: 8px; margin: 0 0 3px; font-size: 0.95rem; line-height: 1.3; overflow-wrap: anywhere; }
.shared-icon { flex: none; }
.shared-icon .variant-icon { width: 28px; height: 28px; }
.shared-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 2px 14px; font-size: 0.88rem;
  color: var(--heading); font-weight: 600; font-variant-numeric: tabular-nums;
}
.shared-strip { font-size: 0.8rem; letter-spacing: 0; line-height: 1.5; overflow-wrap: anywhere; }
.shared-state { margin: 4px 0 0; font-size: 0.85rem; color: var(--muted); }
.shared-state.bad { color: var(--danger); }
.shared-action { display: flex; gap: 8px; margin-top: 8px; }
.shared-action .shared-play { flex: 1 1 auto; min-height: calc(var(--ctl-h) - 6px); padding: 6px 14px; font-size: 0.92rem; }
.shared-del { flex: none; min-width: 44px; min-height: calc(var(--ctl-h) - 6px); padding: 6px 12px; }
.shared-del.armed { color: var(--danger); border-color: var(--danger); }

.share-msg { min-height: 1.2em; margin-top: 8px; } /* "copied" line after a solve */

/* ---------- replay screen ---------- */

.center-stage { max-width: 560px; margin: 0 auto; }
.replay-stage { max-width: 960px; margin: 0 auto; } /* wider than the menu: three rows of date + status per line need ~250 px each */
.replay-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; }
.replay-head .card-title { margin-bottom: 0; }
.replay-left { padding: 4px 14px; border-radius: var(--r-chip); background: var(--accent-soft); color: var(--accent-text); font-weight: 700; }
.replay-info { margin: 0 0 14px; }
.replay-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; margin: 0 0 20px; }
.replay-day {
  display: flex; flex-direction: column; justify-content: center; gap: 2px;
  min-width: 0; min-height: 64px; padding: 10px 12px 10px 16px;
  border: var(--bw) solid var(--line); border-radius: var(--rb-tile); background: var(--surface-2);
  color: var(--heading); font: inherit; text-align: left; cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
/* first line: date left, status right (it wraps under the date when the row is narrow); second line: chips that wrap as units */
.replay-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 2px 10px; min-width: 0; }
.replay-date { font-weight: 700; font-variant-numeric: tabular-nums; }
.replay-date small { font-size: 0.85rem; font-weight: 400; color: var(--muted); }
.replay-meta { display: flex; flex-wrap: wrap; gap: 0 14px; min-width: 0; font-size: 0.9rem; color: var(--muted); overflow-wrap: anywhere; }
.replay-meta > span { min-width: 0; }
.replay-go { flex: none; padding: 6px 14px; border-radius: var(--r-chip); background: var(--accent); color: var(--on-accent); font-weight: 700; }
.replay-day:disabled { opacity: 0.55; cursor: default; }
.replay-day:disabled .replay-go { background: var(--muted); }
.replay-day:not(:disabled):active { background: var(--accent-soft); border-color: var(--accent); }
@media (hover: hover) { .replay-day:not(:disabled):hover { background: var(--accent-soft); border-color: var(--accent); } }

/* ---------- game ---------- */

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  align-items: start;
}
.side { display: flex; flex-direction: column; gap: var(--gap); min-width: 0; }
.side .card { margin: 0; }
.board-card { margin-bottom: 0; padding: 18px; }

.hud { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 14px; }
.hud-title { position: relative; display: flex; align-items: center; gap: 10px; min-width: 0; font-weight: 700; color: var(--heading); } /* anchors the rules popover */
.hud-title > span:nth-child(2) { min-width: 0; overflow-wrap: anywhere; }
.hud-title .tip-btn { flex: none; margin-left: 0; }
.hud-icon .variant-icon { width: calc(36px * var(--vi-scale)); height: calc(36px * var(--vi-scale)); }
.seed-tag { margin-left: 8px; font-size: 0.85rem; font-weight: 400; color: var(--muted); }
/* Hold-V difficulty block is a flex child of .hud (not an inline tag inside the title), so it does
   not want seed-tag's left margin; the raw numbers behind the grades are dimmer than the grades. */
#difficultyDev { margin-left: 0; }
#difficultyDev .dev-raw { opacity: 0.75; margin-left: 4px; }
.difficulty-badge {
  padding: 4px 12px; border-radius: var(--r-chip); font-size: 0.85rem; font-weight: 600;
  background: var(--ok-bg); color: var(--ok); white-space: nowrap;
}
.hud-time {
  padding: 2px 14px; border: 1px solid var(--line); border-radius: var(--r-chip); background: var(--surface-2);
  font-size: 1.05rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--heading); white-space: nowrap;
}
.hud-step {
  padding: 4px 14px; border-radius: var(--r-chip); background: var(--accent-soft); color: var(--accent-text);
  font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; /* Exact: the step of the head, "Step: 12/25" */
}
/* Two paths: how far each colour is, a circle for red and a square for blue like the numbers */
.two-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.two-chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px;
  border: 2px solid transparent; border-radius: var(--r-chip); background: var(--accent-soft);
  font-weight: 600; font-variant-numeric: tabular-nums;
}
.two-chip.active { border-color: currentColor; }
.two-red { color: var(--b-red); }
.two-blue { color: var(--b-blue); }
.two-dot { display: inline-block; width: 14px; height: 14px; background: currentColor; }
.two-red .two-dot { border-radius: 50%; }
.two-blue .two-dot { border-radius: 3px; }

/* The board sits straight on the card; no border or padding on the svg itself: pointer positions are mapped to cells through its
   bounding box. Its max-width is set inline (board.js): about 84 px a cell, and short enough to fit the window's height. */
.grid-wrap {
  position: relative; display: flex; justify-content: center; margin-top: 14px;
  user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; touch-action: none;
}
.zip-svg {
  display: block; width: 100%; height: auto; background: var(--b-bg); border-radius: 16px;
  box-shadow: 0 0 0 2px var(--b-frame); /* the board outline; a shadow does not change the box used for hit testing */
  touch-action: none; cursor: pointer;
}
/* Cutout, Wrap-around, Pentagon: the tiles carry the white and the outline, so the holes show the page behind them */
.zip-svg.cutout, .zip-svg.wrap, .zip-svg.pentagon, .zip-svg.skin-tiles { background: transparent; box-shadow: none; }
.zip-svg text { font-family: var(--font-num); } /* a theme's number font (default: the page's) */
.zip-svg.cutout, .zip-svg.pentagon { overflow: visible; }
/* Zoom (apps/play/zoom.js): a zoomed board shows a part of its picture through the svg's box, so nothing may be
   drawn outside it. The buttons sit above the board (not over its cells); the hint is for touch screens. */
.zip-svg.zoomed { overflow: hidden; }
.zoom-tools { display: flex; align-items: center; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.zoom-tools[hidden], .zoom-hint[hidden] { display: none; }
.zoom-tools .zoom-hint { margin: 0 auto 0 0; min-width: 0; font-size: 0.8rem; line-height: 1.2; max-height: 2.4em; overflow: hidden; }
.zoom-btn { flex: none; width: 40px; min-height: 40px; padding: 0; }
.zoom-btn .bi { width: 20px; height: 20px; }
.zoom-btn:disabled { opacity: 0.4; cursor: default; }
.zoom-btn[hidden], .zoom-tools[hidden] { display: none; }
.zoom-inline { display: inline-flex; gap: 8px; margin: 0 0 0 auto; }
/* The overview of a zoomed board (zoom-map.js): small, in the corner farthest from the head of the path */
.zoom-map { position: absolute; z-index: 2; border-radius: 8px; overflow: hidden; opacity: 0.94; cursor: pointer; touch-action: none;
  box-shadow: 0 0 0 2px var(--b-frame), var(--shadow); }
.zoom-map[hidden] { display: none; }
.zoom-map svg { display: block; width: 100%; height: 100%; }
.zm-board { fill: var(--b-bg); }
.zm-dots circle { fill: var(--accent); opacity: 0.5; }
.zm-view { fill: var(--accent-soft); fill-opacity: 0.55; stroke: var(--accent); }
.zip-svg.panmode, .solid-wrap.panmode { cursor: grab; }
@media (pointer: coarse) { .zoom-btn { width: 44px; min-height: 44px; } }
/* One way arrows: a step against an arrow flashes it (the polygon gets .blocked, see flashBlockedArrow in apps/play/grid-input.js). */
.arrow-mark polygon { transform-box: fill-box; transform-origin: center; }
.arrow-mark polygon.blocked { animation: arrow-blocked 0.45s ease-out; }
@keyframes arrow-blocked {
  0% { fill: var(--b-wrong); transform: scale(1); }
  35% { fill: var(--b-wrong); transform: scale(1.7); }
  100% { fill: var(--b-wall); transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) { .arrow-mark polygon.blocked { animation: none; fill: var(--b-wrong); } }

.solved {
  margin: 0 0 10px; padding: 12px 16px; border: 1px solid var(--ok-line); border-radius: var(--r-2);
  background: var(--ok-bg); color: var(--ok); font-weight: 700; overflow-wrap: anywhere;
}
.solved::before { content: "\2713  "; }
.result-card .button-row { margin-top: 10px; }
.result-card .button-row:first-child { margin-top: 0; }

/* Actions: a 2x2 toolbar beside the board; on a phone a bar fixed to the bottom, icon over label (see the phone block) */
.actions .button-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.actions .btn { min-height: 48px; padding: 8px 10px; }

/* Stats under the game: a section the player can fold (<details>); the row of the grid being played is marked. */
.play-stats { margin: 16px 0 0; padding: 0; }
.play-stats > summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; cursor: pointer; list-style: none;
  font-size: 1.15rem; font-weight: 800; color: var(--heading);
}
.play-stats > summary::-webkit-details-marker { display: none; }
.play-stats > summary::after { content: "\25BE"; color: var(--muted); }
.play-stats[open] > summary::after { content: "\25B4"; }
.play-stats .stats-body { padding: 0 20px 18px; }
.play-stats tr.current td { background: var(--accent-soft); }

/* ---------- generating ---------- */

.gen-icon { margin-bottom: 10px; }
.gen-icon .variant-icon { width: calc(56px * var(--vi-scale)); height: calc(56px * var(--vi-scale)); }
.progress { height: 12px; margin: 16px 0 10px; background: var(--accent-soft); border-radius: 999px; overflow: hidden; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-text)); border-radius: 999px; transition: width 0.1s linear; }

/* ---------- stats table ---------- */

.table-scroll { margin-top: 12px; overflow-x: auto; }
table { width: 100%; margin-top: 12px; border-collapse: collapse; font-size: 0.95rem; }
.table-scroll table { margin-top: 0; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: var(--surface-2); color: var(--muted); font-size: 0.82rem; font-weight: 700; }
tr:last-child td { border-bottom: 0; }

/* ---------- hidden developer bits ---------- */

.dev-badge {
  position: fixed; right: 10px; bottom: 10px; z-index: 20; padding: 4px 10px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; font-size: 0.75rem; color: var(--muted);
}

/* ---------- export dialog ---------- */

.modal-backdrop, .modal-backdrop * { box-sizing: border-box; }
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 20px; background: var(--backdrop);
}
.modal-backdrop.show { display: flex; }
.modal {
  width: 100%; max-width: 540px; padding: 24px; background: var(--surface); border: var(--bw-card) var(--bs-card) var(--line);
  border-radius: var(--radius); box-shadow: var(--pop-shadow);
}
.modal h2 { margin-bottom: 12px; font-size: 1.2rem; }
.modal textarea {
  display: block; width: 100%; min-height: 240px; padding: 12px; background: var(--surface-2); color: var(--heading);
  border: var(--bw) solid var(--line); border-radius: var(--r-2); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px; line-height: 1.55; resize: vertical;
}
.modal textarea:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 14px; }
.modal-msg { min-height: 18px; margin-top: 8px; font-size: 0.9rem; color: var(--danger); }
.modal-msg.ok { color: var(--ok); }

/* ---------- 3D puzzles (src/apps/play/solid.js): the menu card, the solid in a game ---------- */

.vi-spoke { fill: none; stroke: var(--icon-line); stroke-width: 0.7; stroke-linecap: round; }
.solid-wrap { position: relative; touch-action: none; user-select: none; -webkit-user-select: none; }
.solid-wrap.turnable { cursor: grab; }
.solid-wrap .sf-svg { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.sf-view { display: block; }
.sf-pair { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px; }
.sf-cell { stroke: var(--sf-line); stroke-width: 1.2; cursor: crosshair; }
.sf-disc { fill: var(--sf-disc); stroke: var(--sf-disc-line); stroke-width: 1; pointer-events: none; }
.sf-gloss { pointer-events: none; }
.sf-wall { stroke: var(--b-wall); stroke-linecap: round; pointer-events: none; }
.sf-cut { stroke: var(--sf-cut); stroke-width: 1.5; stroke-dasharray: 4 3; pointer-events: none; }
.sf-path { fill: none; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
.sf-head { fill: var(--b-path); stroke: var(--b-halo); stroke-width: 2; pointer-events: none; }
.sf-badge { pointer-events: none; }
.sf-badge circle { fill: var(--b-num-fill); stroke: var(--b-num); stroke-width: 2; }
.sf-badge text, .sf-tag text { text-anchor: middle; dominant-baseline: central; font-weight: 700; fill: var(--b-num); }
.sf-badge.visited circle { fill: var(--b-num); }
.sf-badge.visited text { fill: var(--b-num-on); }
.sf-arrow { stroke: var(--b-halo); stroke-width: 1; stroke-linejoin: round; pointer-events: none; }
.sf-cross { fill: var(--sf-mark); font-weight: 700; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.sf-tag { pointer-events: none; }
.sf-tag circle { fill: var(--sf-tag-bg); stroke: var(--sf-cut); stroke-width: 1.5; }
.sf-tag text { fill: var(--sf-mark); }
/* the whole board in a corner of the solid: the net of a tetra or cube, the far side of a ball */
.sf-mini {
  position: absolute; top: 10px; right: 10px; width: 150px; padding: 4px;
  background: var(--sf-mini-bg); border-radius: var(--r-1); box-shadow: 0 0 0 1px var(--sf-mini-line);
}
.sf-mini, .sf-mini * { pointer-events: none; }
.sf-mini .sf-svg { width: 100%; height: auto; }
.solid-wrap.ball .sf-mini { width: 120px; }
/* the way on over a cut of a net, and the hint (src/view/surface-board.js) */
.sf-land {
  fill: color-mix(in srgb, var(--sf-cut) 20%, transparent); stroke: var(--sf-cut); stroke-width: 3; pointer-events: none;
  animation: sf-land-pulse 1.1s ease-in-out infinite alternate;
}
@keyframes sf-land-pulse { from { fill-opacity: 0.35; } to { fill-opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .sf-land { animation: none; } }
.sf-hint { fill: color-mix(in srgb, var(--ok-ink) 22%, transparent); stroke: var(--ok-ink); stroke-width: 3; pointer-events: none; }
.sf-wrong { fill: color-mix(in srgb, var(--danger-ink) 22%, transparent); stroke: var(--danger-ink); stroke-width: 3; pointer-events: none; }

/* ---------- tablets and phones ---------- */

@media (max-width: 1000px) {
  .menu-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "intro" "today" "play" "shared"; }
  .menu-layout.has-gift { grid-template-areas: "intro" "gift" "today" "play" "shared"; }
  .coop-card { grid-template-columns: minmax(0, 1fr) auto; }
  .coop-card .blurb { grid-column: 1 / -1; grid-row: 2; }
  .gotd-card .status-panel { flex-direction: row; }
  .gotd-card .stat-item { flex: 1 1 0; width: auto; }
}

@media (max-width: 900px) {
  .game-layout { grid-template-columns: minmax(0, 1fr); gap: var(--gap); }
}

@media (max-width: 760px) {
  .variant-options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .solid-card .variant-options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  #app { padding: 10px 10px calc(24px + env(safe-area-inset-bottom, 0)); }
  .app-bar-inner { padding: 0 12px; min-height: calc(var(--bar-h) - 4px); gap: 6px; }
  .card { padding: 14px; }
  .card-head { gap: 12px; }
  .menu-layout { gap: 10px; grid-template-areas: "intro" "today" "shared" "play"; }
  .menu-layout.has-gift { grid-template-areas: "intro" "gift" "today" "shared" "play"; }
  .menu-intro { display: none; }
  .howto { display: block; }
  .play-col .card-sub { display: none; }
  .play-col.has-tabs .card-head { padding-right: 130px; }
  .play-tabs { top: 12px; right: 12px; }
  .variant-card {
    grid-template-columns: minmax(0, 1fr); grid-template-areas: "icon" "name"; justify-items: center; gap: 4px;
    min-height: 0; padding: 8px 4px 7px; text-align: center;
  }
  .variant-name { font-size: 0.72rem; line-height: 1.15; }
  .solid-card .variant-name { font-size: 0.68rem; }
  .variant-card::after { top: -5px; right: -5px; width: 17px; height: 17px; font-size: 0.62rem; }
  .menu-caption { margin: 2px 0 8px; min-height: 2.9em; }
  .gotd-card .blurb { display: none; }
  .coop-card { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .coop-card .blurb { display: none; }
  .coop-card .btn { width: 100%; }
  .gotd-card .card-head { margin-bottom: 10px; }
  .gotd-card .status-panel { margin-top: 10px; padding-top: 0; }
  .stat-item { padding: 8px 10px; gap: 8px; }
  .stat-item .stat-icon { width: 24px; height: 24px; }
  /* the Play bar of a card: size + Play, kept at the bottom of the card while it is on screen */
  .free-card, .solid-card { padding-bottom: 0; }
  .play-bar {
    position: sticky; bottom: 0; z-index: 20; margin: 0 -14px; padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0));
    background: var(--glass); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    border-top: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius);
  }
  .play-bar .size-field { flex: 0 1 44%; }
  .play-bar .size-field .field-label { display: none; }
  .play-bar .size-field .small { display: none; } /* "Today's game: #1" has no room beside Play */
  .play-bar select { width: 100%; max-width: none; padding-right: 34px; }
  .play-bar .button-row { flex: 1 1 0; min-width: 0; }
  /* shared: a one-line banner that opens the list */
  .shared-card { display: block; padding: 0; }
  .shared-card .shared-head { padding: 12px 14px; cursor: pointer; }
  .shared-card .shared-head::after { content: "\25BE"; margin-left: auto; color: var(--muted); }
  .shared-card.open .shared-head::after { content: "\25B4"; }
  .shared-card:not(.open) > :not(.shared-head) { display: none; }
  .shared-card.open .shared-list { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 0 12px 6px; }
  .shared-card.open .shared-more { display: block; width: calc(100% - 24px); margin: 4px 12px 12px; }
  .shared-card > .shared-state { padding: 0 14px 8px; }
  .shared-icon { display: none; }
  .replay-grid { grid-template-columns: 1fr; }
  .board-card { padding: max(10px, calc(var(--r-3) * 0.3)); border-radius: calc(var(--r-3) - 2px); }
  .hud { gap: 6px 10px; }
  .hud-title { flex: 1 1 100%; order: 1; font-size: 0.95rem; }
  .difficulty-badge { order: 2; font-size: 0.78rem; padding: 2px 10px; }
  .hud-time { order: 3; margin-left: auto; padding: 1px 12px; }
  .hud-step { order: 4; }
  .hud-icon .variant-icon { width: 30px; height: 30px; }
  .grid-wrap { margin-top: 10px; }
  .zip-svg { border-radius: 14px; }
  /* actions: a bar fixed to the bottom edge in the thumb zone, icon over label; the page ends above it (stats and all) */
  #app.has-actions { padding-bottom: calc(96px + env(safe-area-inset-bottom, 0)); }
  .actions {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; margin: 0; padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0));
    border-width: 1px 0 0; border-radius: var(--rb-3) var(--rb-3) 0 0; background: var(--glass);
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  }
  .actions .button-row { display: flex; gap: 8px; }
  .actions .btn {
    flex: 1 1 0; flex-direction: column; gap: 2px; min-height: 54px; padding: 6px 4px; font-size: 0.74rem; line-height: 1.15; border-radius: var(--rb-2);   /* icon over label: not a pill */
  }
  .actions .btn .bi { width: 22px; height: 22px; }
  .result-card { padding: 12px; }
  .play-stats > summary { padding: 14px 16px; }
  .play-stats .stats-body { padding: 0 14px 14px; }
  .sf-mini { width: 96px; top: 6px; right: 6px; }
  .solid-wrap.ball .sf-mini { width: 84px; }
  /* the wide stats table becomes one small card per grid size */
  table.responsive, table.responsive tbody, table.responsive tr, table.responsive td { display: block; width: 100%; }
  table.responsive .head-row { display: none; }
  table.responsive tr { margin-bottom: 10px; padding: 8px 14px; background: var(--surface-2); border: var(--bw-sub) var(--bs-card) var(--line); border-radius: var(--rb-2); }
  table.responsive td { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border: 0; white-space: normal; }
  table.responsive td::before { content: attr(data-label); color: var(--muted); font-weight: 600; }
  table.responsive td:first-child { padding-bottom: 6px; color: var(--heading); font-size: 1.1rem; font-weight: 800; }
  table.responsive td:first-child::before { content: none; }
  table.responsive tr.current { background: var(--accent-soft); }
  table.responsive tr.current td { background: transparent; }
  .modal textarea { font-size: 16px; } /* 16 px stops iOS from zooming in on focus */
}

@media (max-width: 380px) {
  .app-bar-inner { gap: 4px; }
  .brand { font-size: 1.15rem; gap: 8px; }
  .icon-btn { width: calc(var(--icon-btn) - 2px); height: calc(var(--icon-btn) - 2px); }
}
.result-card .lucky-row.reward { margin-top: 12px; border-radius: var(--r-2); }
.result-card .lucky-row.reward + .lucky-result, .result-card .lucky-result + .lucky-result { margin-top: 10px; }
.view-tools { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.view-tools .btn { flex: 0 1 auto; min-height: calc(var(--ctl-h) - 6px); padding: 6px 16px; font-size: 0.92rem; }
.share-msg:empty { display: none; }

/* the 3D screen's "Follow" explanation: on a pointer it is the button's tooltip, on touch it is written out */
.view-hint { display: none; margin: 8px 2px 0; }
@media (hover: none) { .view-hint { display: block; } }
.sheet-body .lucky-week span.win { background: var(--orange); color: var(--on-orange); }

/* ---------- theme bounds ---------- */
/* A theme may set --ctl-h as low as 40px; a touch screen keeps its controls at 44px. */
@media (pointer: coarse) {
  .btn, select { min-height: max(var(--ctl-h), 44px); }
}