:root {
  color-scheme: light;
  --bg: #eef3fb;
  --surface: #ffffff;
  --surface-2: #f7f9fd;
  --surface-3: #edf2f9;
  --text: #18233b;
  --muted: #65718a;
  --border: #dbe3ef;
  --border-strong: #c2cddd;
  --primary: #2667ff;
  --primary-2: #1652d9;
  --cyan: #36d8e9;
  --danger: #c93447;
  --success: #16815d;
  --warning: #9a6411;
  --shadow: 0 14px 36px rgba(25, 43, 74, .10);
  --cell-bg: #ffffff;
  --cell-text: #111827;
  --cell-border: #213047;
  --cell-active: #d9ecff;
  --cell-word: #ecf6ff;
  --cell-wrong: #ffe0e4;
  --cell-correct: #ddf7e9;
  --radius: 20px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #071021;
  --surface: #101a2f;
  --surface-2: #14213a;
  --surface-3: #1a2945;
  --text: #eef4ff;
  --muted: #9eacc5;
  --border: #263853;
  --border-strong: #38506f;
  --primary: #5592ff;
  --primary-2: #77a8ff;
  --cyan: #54e8ff;
  --danger: #ff7c8d;
  --success: #62d5a7;
  --warning: #ffd27a;
  --shadow: 0 18px 50px rgba(0, 0, 0, .32);
  --cell-bg: #27364f;
  --cell-text: #ffffff;
  --cell-border: #a8b8d0;
  --cell-active: #405e88;
  --cell-word: #334a6b;
  --cell-wrong: #6a3740;
  --cell-correct: #275a48;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    color-scheme: dark;
    --bg: #071021;
    --surface: #101a2f;
    --surface-2: #14213a;
    --surface-3: #1a2945;
    --text: #eef4ff;
    --muted: #9eacc5;
    --border: #263853;
    --border-strong: #38506f;
    --primary: #5592ff;
    --primary-2: #77a8ff;
    --cyan: #54e8ff;
    --danger: #ff7c8d;
    --success: #62d5a7;
    --warning: #ffd27a;
    --shadow: 0 18px 50px rgba(0, 0, 0, .32);
    --cell-bg: #27364f;
    --cell-text: #ffffff;
    --cell-border: #a8b8d0;
    --cell-active: #405e88;
    --cell-word: #334a6b;
    --cell-wrong: #6a3740;
    --cell-correct: #275a48;
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, color-mix(in srgb, var(--primary) 11%, transparent), transparent 34rem),
    radial-gradient(circle at 95% 8%, color-mix(in srgb, var(--cyan) 10%, transparent), transparent 28rem),
    var(--bg);
  transition: background-color .25s ease, color .25s ease;
}
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: var(--primary); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.muted { color: var(--muted); }

.app-shell { width: min(1500px, 100%); margin: 0 auto; padding: 0 24px 28px; }
.topbar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(145deg, #1a2850, #0d1530); color: var(--cyan);
  border: 1px solid rgba(84, 232, 255, .25); font-weight: 900; font-size: .82rem;
  box-shadow: 0 8px 20px rgba(13, 21, 48, .2);
}
.brand-copy { display: grid; line-height: 1.1; gap: 4px; }
.brand-copy strong { font-size: 1rem; }
.brand-copy span { color: var(--muted); font-size: .83rem; font-weight: 700; letter-spacing: .02em; }
.top-actions { display: flex; align-items: center; justify-content: flex-end; gap: 9px; flex-wrap: wrap; }
.compact-select select, .icon-button {
  min-height: 42px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--text); box-shadow: 0 4px 12px rgba(24, 35, 59, .04);
}
.compact-select select { padding: 0 34px 0 12px; }
.icon-button { width: 42px; padding: 0; display: grid; place-items: center; font-weight: 900; font-size: 1.05rem; }
.icon-button:hover, .compact-select select:hover { border-color: var(--border-strong); background: var(--surface-2); }

.hero {
  margin: 28px 0 20px; padding: 30px 34px; border-radius: 26px;
  display: flex; justify-content: space-between; align-items: center; gap: 30px;
  background: linear-gradient(135deg, #101936 0%, #142349 64%, #0d3951 100%);
  color: #f4f8ff; box-shadow: 0 18px 40px rgba(12, 24, 56, .2); overflow: hidden; position: relative;
}
.hero::after { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; right: -90px; top: -150px; background: rgba(84,232,255,.09); }
.eyebrow { display: inline-block; color: #54e8ff; font-size: .75rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { margin: 8px 0 10px; font-size: clamp(1.8rem, 3.3vw, 3rem); line-height: 1.08; }
.hero p { max-width: 800px; margin: 0; color: #c8d3ea; font-size: clamp(.94rem, 1.5vw, 1.08rem); line-height: 1.65; }
.hero-badge { flex: 0 0 auto; padding-right: 14px; z-index: 1; }
.mini-grid { display: grid; grid-template-columns: repeat(5, 24px); gap: 3px; transform: rotate(5deg); }
.mini-grid span { width: 24px; height: 24px; border-radius: 4px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.08); }
.mini-grid span.on { display: grid; place-items: center; background: #f8fbff; color: #142349; font-weight: 900; font-size: .72rem; border-color: #fff; }

.mode-tabs { display: flex; gap: 8px; margin: 0 0 18px; }
.mode-tab {
  border: 1px solid var(--border); background: var(--surface); color: var(--muted); min-height: 44px; padding: 0 18px; border-radius: 13px; font-weight: 800; display: inline-flex; align-items: center; gap: 8px;
}
.mode-tab.active { background: var(--text); color: var(--surface); border-color: var(--text); }
.workspace-panel { display: none; }
.workspace-panel.active { display: block; }
.workspace-grid { display: grid; grid-template-columns: minmax(350px, .85fr) minmax(520px, 1.3fr); gap: 18px; align-items: start; }
.card { background: color-mix(in srgb, var(--surface) 96%, transparent); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.editor-card, .preview-card, .play-toolbar, .player-card { padding: 22px; }
.card-heading, .preview-toolbar, .player-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.card h2 { margin: 0; font-size: 1.25rem; }
.card-heading p, .preview-toolbar p, .play-toolbar p { margin: 7px 0 0; font-size: .9rem; line-height: 1.5; }
.field-label { display: block; margin: 16px 0 7px; color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .02em; }
.text-input {
  width: 100%; min-height: 43px; border: 1px solid var(--border); border-radius: 11px; padding: 9px 11px; background: var(--surface-2); color: var(--text); outline: none;
}
.text-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 16%, transparent); background: var(--surface); }
.two-column-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.word-table-head { display: grid; grid-template-columns: .8fr 1.3fr 32px; gap: 8px; margin-top: 19px; padding: 0 4px; color: var(--muted); font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.word-table-head span:last-child { grid-column: 2; }
.word-rows { display: grid; gap: 7px; margin-top: 7px; max-height: 460px; overflow-y: auto; padding-right: 3px; }
.word-row { display: grid; grid-template-columns: .8fr 1.3fr 32px; gap: 8px; align-items: center; }
.word-row .text-input { min-height: 40px; }
.remove-row { width: 32px; height: 32px; border-radius: 9px; border: 1px solid transparent; background: transparent; color: var(--muted); font-size: 1.2rem; }
.remove-row:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 25%, transparent); }
.editor-actions-row, .toolbar-buttons, .export-actions, .player-actions-top { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.editor-actions-row { margin-top: 12px; }
.generate-wrap { margin-top: 17px; }
.button {
  min-height: 42px; padding: 9px 14px; border-radius: 11px; border: 1px solid transparent; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; gap: 7px; transition: transform .15s ease, background .15s ease, border .15s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--primary); color: white; }
.button.primary:hover { background: var(--primary-2); }
.button.secondary { background: var(--surface-3); color: var(--text); border-color: var(--border); }
.button.secondary:hover, .button.ghost:hover { border-color: var(--border-strong); background: var(--surface-2); }
.button.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.button.large { width: 100%; min-height: 50px; font-size: .98rem; }
.button.compact { min-height: 36px; padding: 7px 10px; font-size: .8rem; }
.danger-text { color: var(--danger) !important; }
.message { min-height: 22px; margin-top: 10px; font-size: .82rem; line-height: 1.4; color: var(--muted); }
.message.success { color: var(--success); }
.message.warning { color: var(--warning); }
.message.error { color: var(--danger); }

.preview-card { min-height: 650px; }
.preview-toolbar { margin-bottom: 14px; }
.empty-state { min-height: 470px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: var(--muted); padding: 30px; }
.empty-state strong { margin-top: 12px; color: var(--text); font-size: 1rem; }
.empty-state span { margin-top: 7px; max-width: 420px; font-size: .86rem; line-height: 1.5; }
.empty-icon { width: 68px; height: 68px; display: grid; place-items: center; border-radius: 20px; background: var(--surface-3); color: var(--primary); font-size: 2rem; border: 1px solid var(--border); }
.crossword-area { display: grid; gap: 18px; }
.grid-scroll { overflow: auto; max-width: 100%; padding: 8px 2px 3px; }
.crossword-grid {
  --cell-size: 35px;
  display: grid; width: max-content; margin: 0 auto; gap: 0; background: transparent; user-select: none;
}
.cw-cell { width: var(--cell-size); height: var(--cell-size); position: relative; }
.cw-cell.block { background: transparent; }
.cw-cell.open { background: var(--cell-bg); border: 1px solid var(--cell-border); margin-right: -1px; margin-bottom: -1px; color: var(--cell-text); }
.cw-cell .number { position: absolute; top: 1px; left: 2px; z-index: 2; font-size: calc(var(--cell-size) * .25); font-weight: 800; line-height: 1; color: var(--cell-text); opacity: .86; pointer-events: none; }
.cw-cell .solution-letter { position: absolute; inset: 0; display: grid; place-items: center; padding-top: 2px; font-weight: 800; font-size: calc(var(--cell-size) * .5); color: var(--cell-text); }
.crossword-grid.hide-solution .solution-letter { opacity: 0; }
.clues-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; border-top: 1px solid var(--border); padding-top: 16px; }
.clues-layout h3, .player-clues h3 { margin: 0 0 8px; font-size: .93rem; }
.clue-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.clue-list li { font-size: .83rem; line-height: 1.45; color: var(--muted); }
.clue-list li strong { color: var(--text); margin-right: 5px; }
.export-actions { border-top: 1px solid var(--border); padding-top: 15px; }

.play-toolbar { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; margin-bottom: 18px; }
.play-picker { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.play-picker label { min-width: 170px; }
.play-picker .field-label { margin-top: 0; }
.play-empty { min-height: 430px; }
.player-heading { align-items: center; }
.player-heading h2 { margin-top: 8px; font-size: 1.35rem; }
.pill { display: inline-block; padding: 5px 9px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 11%, var(--surface)); color: var(--primary); border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--border)); font-size: .72rem; font-weight: 800; }
.player-layout { display: grid; grid-template-columns: minmax(430px, 1.2fr) minmax(260px, .65fr); gap: 22px; margin-top: 18px; align-items: start; }
.player-grid-scroll { padding: 6px; }
.player-clues { display: grid; gap: 20px; max-height: 660px; overflow-y: auto; padding-right: 4px; }
.clue-list.clickable li { border-radius: 8px; padding: 5px 7px; margin-left: -7px; cursor: pointer; }
.clue-list.clickable li:hover, .clue-list.clickable li.active { background: var(--surface-3); color: var(--text); }
.cw-cell input {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0; padding: 5px 1px 0; outline: none; text-align: center; text-transform: uppercase; font-weight: 800; font-size: calc(var(--cell-size) * .5); background: transparent; color: var(--cell-text); caret-color: transparent;
}
.cw-cell.word-active { background: var(--cell-word); }
.cw-cell.cell-active { background: var(--cell-active); z-index: 1; }
.cw-cell.wrong { background: var(--cell-wrong); }
.cw-cell.correct { background: var(--cell-correct); }

footer { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .8rem; padding: 8px 3px 0; }
footer a { color: var(--muted); text-decoration: none; font-weight: 700; }
footer a:hover { color: var(--primary); }

.modal-backdrop { position: fixed; inset: 0; background: rgba(2, 8, 20, .6); backdrop-filter: blur(4px); z-index: 1000; }
.modal-panel {
  position: fixed; z-index: 1001; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: min(880px, calc(100vw - 28px)); max-height: min(88vh, 860px); overflow-y: auto;
  background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 23px; box-shadow: 0 28px 90px rgba(0,0,0,.38); padding: 26px;
}
.modal-close { position: sticky; float: right; top: 0; z-index: 2; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); font-size: 1.5rem; line-height: 1; }
.modal-content { padding-top: 2px; }
.modal-content > h2 { margin: 7px 54px 16px 0; }
.instructions-content { display: grid; gap: 12px; }
.instruction-step { display: grid; grid-template-columns: 34px 1fr; gap: 11px; align-items: start; padding: 13px; border-radius: 14px; border: 1px solid var(--border); background: var(--surface-2); }
.instruction-step .step-number { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--primary); color: white; font-size: .8rem; font-weight: 900; }
.instruction-step strong { display: block; margin: 2px 0 5px; }
.instruction-step p { margin: 0; color: var(--muted); line-height: 1.55; font-size: .88rem; }
.instructions-tip { margin-top: 4px; padding: 14px 16px; border-radius: 14px; background: color-mix(in srgb, var(--cyan) 9%, var(--surface)); border: 1px solid color-mix(in srgb, var(--cyan) 28%, var(--border)); line-height: 1.55; font-size: .88rem; }

.info-panel { background: linear-gradient(155deg, #111a3b, #080c20); color: #eef4ff; border-color: rgba(84,232,255,.28); }
.info-panel .modal-close { background: #132344; border-color: rgba(84,232,255,.2); color: #eef4ff; }
.info-panel .info-lead { color: #c7d2ee; line-height: 1.65; }
.info-charity { margin: 18px 0; padding: 16px 18px; background: #0b1430; border: 1px solid rgba(91,128,230,.25); border-radius: 16px; }
.info-charity strong { color: #f5f8ff; }
.info-charity p { margin: 7px 0 0; color: #b7c4df; line-height: 1.55; font-size: .9rem; }
.payment-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.payment-card { display: flex; flex-direction: column; padding: 18px; min-width: 0; background: #0b1430; border: 1px solid rgba(91,128,230,.32); border-radius: 17px; }
.payment-brand { display: flex; align-items: center; gap: 10px; }
.payment-brand > div { display: grid; gap: 3px; }
.payment-brand strong { color: #f4f7ff; }
.payment-brand small { color: #96a6c9; }
.payment-icon { width: 42px; height: 42px; flex: 0 0 42px; display: grid; place-items: center; border-radius: 12px; background: rgba(84,232,255,.09); border: 1px solid rgba(84,232,255,.28); color: #54e8ff; font-weight: 900; }
.payment-badges { display: flex; flex-wrap: wrap; gap: 7px; margin: 15px 0 16px; }
.payment-badges span { padding: 5px 9px; border-radius: 999px; background: #101a3b; border: 1px solid rgba(91,128,230,.28); color: #c4d0ec; font-size: .72rem; font-weight: 700; }
.payment-action { display: flex; align-items: center; justify-content: center; min-height: 46px; margin-top: auto; padding: 9px 12px; border-radius: 12px; text-decoration: none; color: #061018; font-weight: 900; text-align: center; background: linear-gradient(90deg,#54e8ff,#4da3ff); }
.payment-card.stripe .payment-action { background: linear-gradient(90deg,#ffe45c,#ffb84d); }
.payment-action:hover { filter: brightness(1.06); }
.payment-note { color: #94a3c7; font-size: .8rem; line-height: 1.55; }
.crypto-card { margin-top: 16px; padding: 16px; background: #071126; border: 1px solid rgba(91,128,230,.25); border-radius: 16px; }
.crypto-card h3 { margin: 0; color: #54e8ff; font-size: 1rem; }
.crypto-card > p { margin: 7px 0 13px; color: #98a8c9; font-size: .84rem; }
.wallet-list { display: grid; gap: 8px; }
.wallet-row { display: grid; grid-template-columns: 54px minmax(0,1fr) auto; gap: 9px; align-items: center; padding: 9px 10px; border-radius: 11px; background: rgba(255,255,255,.035); }
.wallet-row strong { color: #54e8ff; }
.wallet-row code { overflow-wrap: anywhere; color: #dbe6ff; font-size: .76rem; }
.copy-wallet { min-height: 34px; border: 1px solid rgba(84,232,255,.22); border-radius: 9px; background: #132344; color: #eaf2ff; font-weight: 800; padding: 6px 9px; }
.copy-wallet:hover { background: #1a315b; }

@media (max-width: 1050px) {
  .workspace-grid { grid-template-columns: 1fr; }
  .preview-card { min-height: 0; }
  .empty-state { min-height: 330px; }
  .player-layout { grid-template-columns: 1fr; }
  .player-clues { grid-template-columns: 1fr 1fr; max-height: none; }
  .play-toolbar { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 720px) {
  .app-shell { padding: 0 12px 20px; }
  .topbar { min-height: 70px; align-items: flex-start; padding: 12px 0; }
  .brand-copy { display: none; }
  .brand-mark { width: 42px; height: 42px; }
  .top-actions { gap: 6px; }
  .compact-select select { max-width: 126px; padding-left: 8px; min-height: 40px; font-size: .78rem; }
  .theme-select-wrap select { max-width: 94px; }
  .icon-button { width: 40px; min-height: 40px; }
  .hero { margin-top: 15px; padding: 22px 20px; border-radius: 20px; }
  .hero-badge { display: none; }
  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: .9rem; }
  .mode-tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .mode-tab { justify-content: center; padding: 0 8px; font-size: .8rem; }
  .editor-card, .preview-card, .play-toolbar, .player-card { padding: 15px; border-radius: 16px; }
  .two-column-fields, .clues-layout, .player-clues, .payment-grid { grid-template-columns: 1fr; }
  .word-table-head { grid-template-columns: 1fr 1.15fr 30px; }
  .word-row { grid-template-columns: 1fr 1.15fr 30px; gap: 5px; }
  .word-row .text-input { font-size: .78rem; padding: 7px; }
  .editor-actions-row .button { flex: 1 1 auto; }
  .preview-toolbar { flex-direction: column; }
  .crossword-grid { --cell-size: 31px; }
  .export-actions .button { flex: 1 1 46%; }
  .play-picker { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  .play-picker label { min-width: 0; }
  .play-picker #loadPuzzleButton { grid-column: 1 / -1; }
  .player-heading { align-items: flex-start; flex-direction: column; }
  .player-actions-top { width: 100%; }
  .player-actions-top .button { flex: 1 1 auto; }
  .modal-panel { width: calc(100vw - 18px); max-height: 92vh; padding: 18px; border-radius: 18px; }
  .wallet-row { grid-template-columns: 44px minmax(0,1fr); }
  .copy-wallet { grid-column: 1 / -1; }
}

@media (max-width: 460px) {
  .compact-select select { max-width: 112px; }
  .theme-select-wrap { display: none; }
  .word-table-head { display: none; }
  .word-row { grid-template-columns: 1fr 32px; padding: 9px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); }
  .word-row .answer-input, .word-row .clue-input { grid-column: 1; }
  .word-row .remove-row { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
  .crossword-grid { --cell-size: 29px; }
  .play-picker { grid-template-columns: 1fr; }
  .play-picker #loadPuzzleButton { grid-column: auto; }
}

@media print {
  @page { size: auto; margin: 12mm; }
  body { background: white !important; color: black !important; }
  .topbar, .hero, .mode-tabs, .editor-card, .preview-toolbar .toolbar-buttons, .export-actions, footer, .modal-panel, .modal-backdrop, #playPanel { display: none !important; }
  .app-shell { width: 100%; padding: 0; }
  #createPanel { display: block !important; }
  .workspace-grid { display: block; }
  .preview-card { border: 0; box-shadow: none; padding: 0; background: white !important; }
  .preview-toolbar { display: block; margin-bottom: 10mm; }
  .preview-toolbar h2 { color: black !important; font-size: 20pt; }
  .preview-toolbar p { color: #333 !important; }
  .crossword-grid { --cell-size: 8mm; }
  .cw-cell.open { background: white !important; border-color: black !important; color: black !important; }
  .cw-cell .number, .cw-cell .solution-letter { color: black !important; }
  .crossword-grid.hide-solution .solution-letter { opacity: 0 !important; }
  .clues-layout { color: black !important; border-color: #777; break-inside: avoid; }
  .clue-list li, .clue-list li strong, .clues-layout h3 { color: black !important; }
  .grid-scroll { overflow: visible; }
}