/* Crosswords — Apple News–inspired look. Light & dark follow the device setting. */
:root {
  --bg: #ececee;
  --surface: #ffffff;
  --tile: #f7f7f8;
  --tile-line: #dedee2;
  --block: #3a3a3c;
  --fg: #111113;
  --muted: #6e6e73;
  --sep: #e5e5ea;
  --accent: #8a3ffc;      /* selected square */
  --accent-fg: #ffffff;
  --word: #e4d4fd;        /* rest of the current word */
  --linked: #f2eafe;      /* clues referenced by the current clue */
  --accent-text: #7a2ff0;
  --wrong: #e5322d;
  --revealed: #8a3ffc;
  --given: #6e6e73;
  --theme: #c9f0d1;
  --kb-bg: #d1d3d9;
  --key: #ffffff;
  --key-alt: #abb0ba;
  --key-fg: #111113;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 18px rgba(0,0,0,.06);
  --cell: 34px;  /* set by JS */
  --gap: 3px;    /* set by JS */
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1c1c1e;
    --tile: #2a2a2c;
    --tile-line: transparent;
    --block: #545457;
    --fg: #f2f2f7;
    --muted: #98989f;
    --sep: #333336;
    --word: #3b2268;
    --linked: #281c40;
    --accent-text: #b48cff;
    --wrong: #ff5a52;
    --revealed: #b48cff;
    --given: #98989f;
    --theme: #1f5130;
    --kb-bg: #1b1b1d;
    --key: #4a4a4e;
    --key-alt: #333336;
    --key-fg: #ffffff;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); }
body { -webkit-tap-highlight-color: transparent; overscroll-behavior: none; }
#app { height: 100dvh; display: flex; flex-direction: column; }
.view { flex: 1; display: flex; flex-direction: column; min-height: 0; }
[hidden] { display: none !important; }
button { font: inherit; color: inherit; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* ---------- shared controls ---------- */
.round-btn {
  appearance: none; border: none; width: 44px; height: 44px; border-radius: 50%;
  background: var(--surface); box-shadow: var(--shadow); display: grid; place-items: center; cursor: pointer; flex: none;
}
.round-btn.small { width: 36px; height: 36px; }
.round-btn.small svg { width: 18px; height: 18px; }
.pill-btn {
  appearance: none; border: none; background: var(--surface); box-shadow: var(--shadow);
  padding: 10px 16px; border-radius: 99px; font-size: 15px; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.pill-btn.primary { background: var(--accent); color: #fff; }
.pill-btn.subtle { box-shadow: none; background: var(--bg); font-weight: 500; }
.pill-btn:disabled { opacity: .5; }

/* ---------- library ---------- */
.home-top {
  display: flex; align-items: center; gap: 10px; max-width: 760px; width: 100%; margin: 0 auto;
  padding: calc(14px + env(safe-area-inset-top)) 16px 6px;
}
.home-top h1 { flex: 1; margin: 0; font-size: 30px; font-weight: 800; letter-spacing: -.02em; }
.seg {
  display: flex; gap: 2px; background: var(--sep); padding: 2px; border-radius: 9px;
  max-width: 728px; width: calc(100% - 32px); margin: 8px auto 4px;
}
.seg button {
  flex: 1; border: none; background: none; padding: 6px 4px; border-radius: 7px; font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap;
}
.seg button.on { background: var(--surface); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.home-main { flex: 1; overflow-y: auto; padding: 8px 16px calc(24px + env(safe-area-inset-bottom)); }
.lib-group { max-width: 728px; margin: 14px auto 0; }
.lg-head { display: flex; align-items: center; gap: 8px; padding: 0 4px 6px; }
.lg-head h2 { flex: 1; margin: 0; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lg-head button { border: none; background: none; color: var(--accent-text); font-size: 13px; cursor: pointer; padding: 2px 4px; }
.card-list { list-style: none; margin: 0; padding: 0; background: var(--surface); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.card-list li + li a { border-top: 1px solid var(--sep); }
.card-list a { display: flex; align-items: center; gap: 14px; padding: 12px 14px; color: inherit; text-decoration: none; }
.card-list a:active { background: var(--bg); }
.card-list canvas { width: 44px; height: 44px; flex: none; }
.pl-main { flex: 1; min-width: 0; }
.pl-title { font-weight: 600; font-size: 16px; }
.pl-meta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.pl-status { font-size: 12px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.pl-status.progress { color: var(--accent-text); }
.pl-status.solved { color: #2a9d48; }
.empty { color: var(--muted); text-align: center; padding: 48px 16px; line-height: 1.5; max-width: 420px; margin: 0 auto; }

/* ---------- solver: top ---------- */
.sv-top {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: calc(10px + env(safe-area-inset-top)) 16px 4px;
}
.toolbar {
  display: flex; align-items: center; background: var(--surface); box-shadow: var(--shadow);
  border-radius: 99px; padding: 3px 6px; gap: 2px;
}
.tb {
  appearance: none; border: none; background: none; display: flex; align-items: center; gap: 4px;
  height: 38px; padding: 0 10px; border-radius: 99px; cursor: pointer; font-size: 15px; font-variant-numeric: tabular-nums;
}
.tb:hover { background: var(--bg); }
.tb .chev { width: 14px; height: 14px; }
.menu { position: relative; }
.menu-pop {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 30; min-width: 210px;
  background: var(--surface); border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.2);
  padding: 5px; display: flex; flex-direction: column;
}
.menu-pop button { all: unset; padding: 10px 12px 10px 32px; border-radius: 7px; cursor: pointer; font-size: 15px; position: relative; }
.menu-pop button:hover { background: var(--bg); }
.menu-pop button.toggle.on::before { content: "✓"; position: absolute; left: 12px; font-weight: 700; color: var(--accent-text); }
.menu-pop hr { border: none; border-top: 1px solid var(--sep); margin: 4px 8px; }
.menu-pop .danger { color: var(--wrong); }

.sv-sub { display: flex; align-items: center; gap: 12px; padding: 6px 46px 10px; min-height: 44px; }
.sv-title { flex: 1; min-width: 0; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sv-title b { font-weight: 700; margin-right: 8px; }
.sv-title span { color: var(--muted); }
.badge {
  display: flex; align-items: center; gap: 6px; background: var(--surface); box-shadow: var(--shadow);
  border-radius: 99px; padding: 7px 12px; font-size: 14px; white-space: nowrap;
}
.badge::before {
  content: "✓"; display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 800;
}
.hunt { margin: 0 46px 10px; font-size: 14px; color: var(--muted); }
.hunt::before { content: "🔎 "; }

/* ---------- solver: main area ---------- */
.solve { flex: 1; display: flex; gap: 24px; padding: 0 46px 24px; min-height: 0; }
.grid-wrap { position: relative; flex: 1; min-width: 0; min-height: 0; display: flex; justify-content: center; align-items: flex-start; }
.clue-card {
  width: 340px; flex: none; background: var(--surface); border-radius: 16px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; min-height: 0; overflow: hidden;
}
.clue-card h2 { margin: 0; font-size: 16px; font-weight: 700; padding: 14px 16px 10px; border-bottom: 1px solid var(--sep); }
.clue-card ol { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.clue-card li {
  display: flex; gap: 10px; padding: 12px 16px; cursor: pointer; font-size: 15px; line-height: 1.3;
  border-bottom: 1px solid var(--sep); position: relative;
}
.clue-card li b { min-width: 22px; text-align: right; font-weight: 700; }
.clue-card li.active { background: var(--word); color: var(--accent-text); }
.clue-card li.active::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--accent); }
.clue-card li.linked { background: var(--linked); }
.clue-card li.done:not(.active) { color: var(--muted); }
.clue-card li .noclue { color: var(--muted); font-style: italic; }

/* ---------- grid ---------- */
.grid {
  display: grid; grid-template-columns: repeat(var(--cols), var(--cell)); grid-auto-rows: var(--cell);
  gap: var(--gap); user-select: none; -webkit-user-select: none; touch-action: manipulation;
}
.cell {
  position: relative; background: var(--tile); border-radius: calc(var(--cell) * .12);
  box-shadow: inset 0 0 0 1px var(--tile-line); cursor: pointer;
}
.cell.block { background: var(--block); box-shadow: none; cursor: default; z-index: 1; }
/* merge neighbouring black squares into one shape */
.cell.block.jr { margin-right: calc(-1 * var(--gap)); border-top-right-radius: 0; border-bottom-right-radius: 0; }
.cell.block.jd { margin-bottom: calc(-1 * var(--gap)); border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
.cell.block.jl { margin-left: calc(-1 * var(--gap)); border-top-left-radius: 0; border-bottom-left-radius: 0; }
.cell.block.ju { margin-top: calc(-1 * var(--gap)); border-top-left-radius: 0; border-top-right-radius: 0; }
.cell.linked { background: var(--linked); }
.cell.word { background: var(--word); box-shadow: none; }
.cell.cursor { background: var(--accent); color: var(--accent-fg); box-shadow: none; }
.cell.theme { background: var(--theme); }
.cell .num {
  position: absolute; top: calc(var(--cell) * .05); left: calc(var(--cell) * .09);
  font-size: calc(var(--cell) * .27); font-weight: 600; line-height: 1; pointer-events: none;
}
.cell .let {
  position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: calc(var(--cell) * .05); font-size: calc(var(--cell) * .6); line-height: 1; pointer-events: none;
}
.cell.pencil .let { opacity: .55; font-style: italic; }
.cell.wrong .let { color: var(--wrong); }
.cell.wrong.cursor .let { color: #fff; text-decoration: line-through; text-decoration-color: #fff; }
.cell.given .let { color: var(--given); }
.cell.revealed::after {
  content: ""; position: absolute; right: 0; top: 0; border-top-right-radius: inherit;
  border-style: solid; border-width: 0 calc(var(--cell) * .22) calc(var(--cell) * .22) 0;
  border-color: transparent var(--revealed) transparent transparent;
}
.cell.cursor.revealed::after { border-right-color: #fff; }
.cell.circle .circ { position: absolute; inset: 2px; border: 1px solid currentColor; opacity: .5; border-radius: 50%; pointer-events: none; }

.paused {
  position: absolute; inset: 0; z-index: 5; background: var(--bg); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px; font-size: 22px; font-weight: 700;
}

/* ---------- clue bar + keyboard (phones) ---------- */
.cluebar {
  display: none; align-items: center; gap: 2px; margin: 8px 10px; min-height: 64px;
  background: var(--surface); border-radius: 22px; box-shadow: var(--shadow); padding: 4px 6px;
}
.cb-btn { appearance: none; border: none; background: none; padding: 10px; cursor: pointer; display: grid; place-items: center; border-radius: 12px; }
.cb-btn svg { width: 24px; height: 24px; }
.cb-text { flex: 1; padding: 6px 8px; font-size: 17px; line-height: 1.25; cursor: pointer; }
.cb-text b { margin-right: 6px; }
.cb-text .arrow { color: var(--accent); margin-right: 6px; font-size: 14px; }
.cb-text .noclue { color: var(--muted); font-style: italic; }

.keyboard {
  background: var(--kb-bg); padding: 8px 3px calc(8px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; gap: 10px; user-select: none; -webkit-user-select: none;
  border-radius: 22px 22px 0 0;
}
.kb-row { display: flex; justify-content: center; gap: 6px; padding: 0 2px; }
.kb-row button {
  all: unset; flex: 1; max-width: 72px; height: 46px; background: var(--key); color: var(--key-fg); border-radius: 7px;
  box-shadow: 0 1px 0 rgba(0,0,0,.3); text-align: center; font-size: 23px; line-height: 44px; cursor: pointer;
}
.kb-row button.wide { flex: 1.5; max-width: 100px; background: var(--key-alt); display: grid; place-items: center; }
.kb-row button:active { filter: brightness(1.3); }

/* ---------- sheet ---------- */
.sheet { position: fixed; inset: 0; z-index: 60; background: rgba(0,0,0,.35); display: flex; align-items: center; justify-content: center; padding: 16px; }
.sheet-card {
  background: var(--bg); border-radius: 18px; width: 100%; max-width: 560px; max-height: calc(100dvh - 32px);
  display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.sheet-head { display: flex; align-items: center; padding: 12px; position: relative; }
.sheet-head h2 { position: absolute; left: 60px; right: 60px; text-align: center; margin: 0; font-size: 17px; }
.sheet-body { overflow-y: auto; padding: 0 20px 22px; }
.sheet-body h3 { font-size: 15px; font-weight: 600; color: var(--muted); margin: 18px 4px 8px; }
.sheet-body .note { font-size: 13px; color: var(--muted); margin: 8px 4px 0; line-height: 1.4; }
.group { background: var(--surface); border-radius: 12px; overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; padding: 12px 16px; font-size: 16px; }
.row + .row { border-top: 1px solid var(--sep); }
.row span { flex: 1; }
.row input[type=checkbox] { width: 22px; height: 22px; accent-color: #f0365a; }
.row select { font: inherit; font-size: 15px; color: var(--muted); background: none; border: none; text-align: right; }
.field { width: 100%; font: inherit; font-size: 15px; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--sep); background: var(--surface); color: var(--fg); }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.status-line { font-size: 14px; margin: 10px 4px 0; min-height: 1.2em; }
.status-line.err { color: var(--wrong); }
details summary { cursor: pointer; font-size: 14px; color: var(--accent-text); margin: 10px 4px 0; }
.solved-body { text-align: center; padding: 6px 0 4px; font-size: 16px; line-height: 1.5; }
.solved-body .big { font-size: 34px; font-weight: 800; margin: 2px 0 8px; }

.toast {
  position: fixed; left: 50%; top: calc(80px + env(safe-area-inset-top)); transform: translateX(-50%); z-index: 70;
  background: var(--fg); color: var(--bg); padding: 10px 18px; border-radius: 99px; font-size: 15px; font-weight: 500;
}

/* ---------- narrow screens: phones, iPad portrait, small windows ---------- */
.narrow-only { display: none; }
@media (max-width: 899px) {
  .narrow-only { display: flex; }
  .tb .chev { display: none; }
  .sv-top { padding-left: 12px; padding-right: 12px; }
  .sv-sub { display: none; }
  .sv-sub:has(.badge:not([hidden])) { display: flex; padding: 0 14px 8px; min-height: 0; }
  .sv-sub:has(.badge:not([hidden])) .sv-title { display: none; }
  .hunt { margin: 0 14px 8px; font-size: 13px; }
  .solve { padding: 0 8px; gap: 0; }
  .grid-wrap { overflow-y: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
  .clue-card { display: none; }
  .cluebar { display: flex; }
  /* clue list view */
  .show-lists .grid-wrap { display: none; }
  .show-lists .solve { flex-direction: column; overflow-y: auto; gap: 14px; padding: 0 12px 16px; }
  .show-lists .clue-card { display: flex; width: auto; overflow: visible; }
  .show-lists .clue-card ol { overflow: visible; }
  .show-lists #listBtn { background: var(--word); color: var(--accent-text); }
}
@media (min-width: 900px) and (max-width: 1180px) {
  .solve, .sv-sub { padding-left: 20px; padding-right: 20px; }
  .hunt { margin-left: 20px; margin-right: 20px; }
  .clue-card { width: 260px; }
  .solve { gap: 16px; }
}

/* =====================================================================
   Book-specific pieces (levels, Word Bank, tips, certificates, connect)
   ===================================================================== */
.muted { color: var(--muted); }
.center-view { align-items: center; justify-content: center; padding: 24px 16px; }
.connect-card { background: var(--surface); border-radius: 18px; box-shadow: var(--shadow); padding: 24px; max-width: 460px; width: 100%; }
.connect-card h1 { margin: 0 0 8px; font-size: 26px; }
.connect-card p { line-height: 1.45; }
.connect-card ol { padding-left: 20px; }
.connect-card ol li { margin: 4px 0; }
.connect-card a { color: var(--accent-text); }

.home-titles { flex: 1; min-width: 0; }
.home-titles h1 { flex: none; }
.home-titles .muted { font-size: 14px; margin-top: 2px; }

.upnext {
  display: flex; align-items: center; gap: 16px; max-width: 728px; margin: 10px auto 4px; padding: 16px;
  background: var(--surface); border-radius: 16px; box-shadow: var(--shadow); color: inherit; text-decoration: none;
}
.upnext canvas { width: 60px; height: 60px; flex: none; }
.un-label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-text); }
.un-title { font-size: 19px; font-weight: 700; margin: 2px 0; }
.un-meta { font-size: 13px; color: var(--muted); }
.lg-count { font-size: 13px; color: var(--muted); font-weight: 600; }
.lg-desc { margin: -2px 4px 8px; font-size: 13px; color: var(--muted); }

.cert-row {
  all: unset; box-sizing: border-box; width: 100%; display: flex; align-items: center; gap: 14px; padding: 12px 14px; cursor: pointer;
  border-top: 1px solid var(--sep);
}
.cert-ic { width: 44px; text-align: center; font-size: 26px; flex: none; filter: grayscale(1); opacity: .6; }
.cert-row.earned .cert-ic { filter: none; opacity: 1; }
.cert-row.earned .pl-title { color: var(--accent-text); }
.card-list li:first-child .cert-row { border-top: none; }

.certificate { text-align: center; border: 3px double var(--accent); border-radius: 14px; padding: 26px 18px; background: var(--surface); }
.certificate .c-top { font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.certificate .c-title { font-size: 28px; font-weight: 800; margin: 10px 0; color: var(--accent-text); }
.certificate .c-line { font-size: 16px; line-height: 1.4; }
.certificate .c-star { font-size: 44px; margin-top: 12px; }
.cert-mini { margin: 10px 0; padding: 10px; border-radius: 10px; background: var(--word); }

.bank { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin: 0 46px 12px; padding: 10px 14px; background: var(--surface); border-radius: 12px; box-shadow: var(--shadow); }
.bank-h { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.bank-words { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 16px; letter-spacing: .04em; font-weight: 600; }
.bank-words span { display: inline-flex; align-items: center; gap: 3px; }
.bank-words span.used { color: var(--muted); text-decoration: line-through; font-weight: 400; }
.ticon { width: 15px; height: 15px; vertical-align: -2px; color: var(--accent); fill: currentColor; stroke: none; }

.tips p { font-size: 16px; line-height: 1.5; background: var(--surface); padding: 12px 14px; border-radius: 12px; margin: 0 0 10px; }
.row small { color: var(--muted); font-size: 14px; text-align: right; }
.pill-btn.danger { color: var(--wrong); }
.hunt::before { content: none; }
.hunt .ticon { width: 17px; height: 17px; }

@media (max-width: 899px) {
  .bank { margin: 0 10px 8px; padding: 8px 12px; }
  .bank-words { font-size: 14px; gap: 2px 12px; }
}
@media (min-width: 900px) and (max-width: 1180px) {
  .bank { margin-left: 20px; margin-right: 20px; }
}

.kbd { display: inline-block; margin-left: 6px; padding: 0 5px; border-radius: 4px; background: rgba(255,255,255,.25); font-size: 12px; line-height: 17px; font-weight: 600; }

/* ---------- books & unlocking ---------- */
.book-head { max-width: 728px; margin: 26px auto 0; padding: 0 4px; }
.book-head h2 { margin: 0; font-size: 22px; font-weight: 800; letter-spacing: -.01em; }
.book-head .muted { font-size: 14px; margin-top: 2px; }
.locked-card {
  display: flex; align-items: center; gap: 14px; max-width: 728px; margin: 10px auto 0; padding: 16px;
  background: var(--surface); border-radius: 14px; box-shadow: var(--shadow);
}
.lc-ic { font-size: 28px; }
.lc-text { flex: 1; font-size: 15px; line-height: 1.4; }
.q-prompt { font-size: 17px; font-weight: 600; margin: 4px 4px 12px; line-height: 1.35; }
#unlockForm .field { margin-bottom: 8px; text-transform: uppercase; letter-spacing: .05em; }
.sheet-body a { color: var(--accent-text); }