/* V4: shared interface styles. The board and its animation remain in hybrid.css.
   Keep the warm comparison's former result field when ?palette=warm is selected. */
.result-copy {
  width: 100%;
  font: 12px/1.8 "DM Sans", sans-serif;
  color: #365443;
  border: 1px solid #dce3d4;
  background: #f4f6eb;
  border-radius: 9px;
  padding: 14px;
  resize: vertical;
}

/* A shared dialog keeps volume controls clear of the mobile wordmark. */
.sound-settings { min-inline-size: 0; font-size: 14px; line-height: 1.6; }
.sound-toggle-row, .volume-label-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sound-toggle-row { flex-wrap: wrap; margin-bottom: 24px; }
.sound-toggle-row > span { flex: 1; min-inline-size: 0; }
.sound-toggle {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-block-size: 44px; padding: 8px 10px; border: 1px solid var(--ui-border, #9aa99b);
  border-radius: 12px; color: var(--ink); background: var(--ui-surface, #fffdf7); font-size: 13px;
}
.sound-toggle:focus-visible, .volume-range:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
.sound-switch-track { display: block; direction: ltr; width: 44px; height: 26px; padding: 4px; border-radius: 20px; background: var(--ui-muted, #788178); flex: 0 0 auto; }
.sound-switch-track > span { display: block; width: 18px; height: 18px; background: #fff; border-radius: 50%; }
.sound-toggle[aria-checked="true"] .sound-switch-track { background: var(--ink); }
.sound-toggle[aria-checked="true"] .sound-switch-track > span { transform: translateX(18px); }
.volume-label-row { font-weight: 600; }
#volume-value { font-variant-numeric: tabular-nums; white-space: nowrap; }
.volume-range { display: block; width: 100%; min-width: 0; height: 44px; margin: 6px 0 0; accent-color: var(--ink); cursor: pointer; }
.sound-settings .modal-note { margin-block: 9px 0; color: var(--readable-muted, #526549); }
#modal .sound-settings .modal-actions > button { flex: 1 1 110px; min-height: 44px; font-size: 13px; white-space: normal; }
.sound-status { font-size: 12px; color: var(--readable-muted, #526549); margin: 12px 0 0; }
.sound-status:empty { margin: 0; }

html[data-palette="hybrid"] {
  --ui-navy: #14263a;
  --ui-navy-hover: #233b52;
  --ui-ivory: #f6f0e4;
  --ui-surface: #fdfcf9;
  --ui-wash: #edf0f2;
  --ui-muted: #526579;
  --ui-line: #d2d9de;
  --ui-border: #7b8c9a;
  --ui-gold: #ffd166;
  --ui-amber: #895a19;
  --ink: var(--ui-navy);
  --muted: var(--ui-muted);
  --readable-muted: var(--ui-muted);
  --readable-amber: var(--ui-amber);
  --line: var(--ui-line);
  --orange: #a77425;
  --shadow: 0 12px 36px rgba(20,38,58,.055);
}

/* Brand and navigation keep the circuit as the brightest element. */
html[data-palette="hybrid"] .brand,
html[data-palette="hybrid"] h1 em,
html[data-palette="hybrid"] .footer-brand { color: var(--ui-navy); }
html[data-palette="hybrid"] .site-header { border-color: var(--ui-line); }
html[data-palette="hybrid"] .main-nav { gap: 10px; }
html[data-palette="hybrid"] .nav-button {
  min-height: 42px;
  padding: 11px 16px;
  font-size: 13px;
  border: 1px solid transparent;
  border-radius: 11px;
  line-height: 1.4;
}
html[data-palette="hybrid"] .nav-button:hover { background: var(--ui-wash); }
html[data-palette="hybrid"] .nav-button.active {
  color: var(--ui-navy);
  background: var(--ui-surface);
  border-color: var(--ui-line);
  font-weight: 650;
}
html[data-palette="hybrid"] .nav-button.active:after { bottom: 4px; }
html[data-palette="hybrid"] .nav-dot { display: none; }
html[data-palette="hybrid"] .icon-button {
  width: 40px;
  height: 40px;
  color: var(--ui-navy);
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: 12px;
}
html[data-palette="hybrid"] .icon-button:hover { background: var(--ui-wash); }
html[data-palette="hybrid"] .sound-button[aria-pressed="true"] {
  color: var(--ui-ivory);
  background: var(--ui-navy);
  border-color: var(--ui-navy);
}
html[data-palette="hybrid"] .live-dot { background: var(--ui-amber); box-shadow: none; }

/* Warm-surface actions. Tile sizing and input behavior are deliberately separate. */
html[data-palette="hybrid"] .primary-button,
html[data-palette="hybrid"] #journey-continue {
  background: var(--ui-navy);
  color: var(--ui-surface);
  border: 1px solid var(--ui-navy);
  border-radius: 10px;
  min-height: 42px;
  padding: 11px 15px;
  font-size: 12px;
  font-weight: 550;
  line-height: 1.4;
  justify-content: center;
  box-shadow: 0 3px 9px rgba(20,38,58,.08);
}
html[data-palette="hybrid"] .primary-button:hover,
html[data-palette="hybrid"] #journey-continue:hover { background: var(--ui-navy-hover); }
html[data-palette="hybrid"] .secondary-button,
html[data-palette="hybrid"] #journey-map {
  background: var(--ui-surface);
  color: var(--ui-navy);
  border: 1px solid var(--ui-navy);
  border-radius: 10px;
  min-height: 40px;
  padding: 10px 13px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  justify-content: center;
}
html[data-palette="hybrid"] .secondary-button:hover,
html[data-palette="hybrid"] #journey-map:hover { background: var(--ui-wash); }
html[data-palette="hybrid"] .text-button { color: var(--ui-navy); }
html[data-palette="hybrid"] .text-button:hover { color: var(--ui-amber); }
html[data-palette="hybrid"] button:focus-visible,
html[data-palette="hybrid"] a:focus-visible,
html[data-palette="hybrid"] textarea:focus-visible {
  outline: 3px solid var(--ui-navy);
  outline-offset: 3px;
}
html[data-palette="hybrid"] .tile:focus-visible {
  outline-color: var(--ui-ivory);
  outline-offset: -3px;
}

/* Progress has three recognizable states: number, current outline, earned spark. */
html[data-palette="hybrid"] .journey-card {
  background: var(--ui-surface);
  border-color: var(--ui-line);
  box-shadow: 0 5px 18px rgba(20,38,58,.025);
}
html[data-palette="hybrid"] .journey-count {
  background: var(--ui-wash);
  color: var(--ui-navy);
  font-size: 11px;
  font-weight: 650;
  padding: 4px 8px;
  border-radius: 20px;
}
html[data-palette="hybrid"] .journey-card-actions {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 8px;
  align-items: stretch;
}
html[data-palette="hybrid"] #journey-continue { font-size: 11px; padding: 10px; text-align: center; }
html[data-palette="hybrid"] #journey-map { font-size: 11px; padding: 10px; }
html[data-palette="hybrid"] .journey-card p { margin-top: 10px; }
html[data-palette="hybrid"] .journey-step {
  height: 38px;
  color: var(--ui-navy);
  background: var(--ui-surface);
  border-color: var(--ui-border);
  font-size: 12px;
}
html[data-palette="hybrid"] .journey-step:hover { background: var(--ui-wash); }
html[data-palette="hybrid"] .journey-step.current {
  color: var(--ui-navy);
  background: #fff4dc;
  border-color: var(--ui-amber);
}
html[data-palette="hybrid"] .journey-step.earned,
html[data-palette="hybrid"] .path-list-number.earned {
  color: var(--ui-gold);
  background: var(--ui-navy);
  border-color: var(--ui-navy);
  font-size: 19px;
}
html[data-palette="hybrid"] .journey-step.earned:hover { background: var(--ui-navy-hover); }
html[data-palette="hybrid"] .journey-step.earned.current { border-color: var(--ui-gold); }
html[data-palette="hybrid"] .path-list-number {
  color: var(--ui-navy);
  background: var(--ui-wash);
  border-color: var(--ui-border);
}

/* Puzzle framing and controls inherit the same warm-surface hierarchy. */
html[data-palette="hybrid"] .game-panel { border-color: var(--ui-line); }
html[data-palette="hybrid"] .label-divider { color: var(--ui-border); }
html[data-palette="hybrid"] .difficulty-badge {
  background: var(--ui-wash);
  border-color: var(--ui-line);
  color: var(--ui-muted);
  font-size: 10px;
}
html[data-palette="hybrid"] .difficulty-badge.bright { background: #fff1d1; color: #765015; border-color: #ddc697; }
html[data-palette="hybrid"] .game-controls {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  align-items: stretch;
  gap: 8px;
  padding: 10px 0;
  border-color: var(--ui-line);
}
html[data-palette="hybrid"] .controls-spacer { display: none; }
.game-controls .next-control { flex-basis: 100%; justify-content: center; gap: 8px; }
html[data-palette="hybrid"] .game-controls .next-control { grid-column: 1 / -1; }
html[dir="rtl"] .next-control svg { transform: rotate(180deg); }
html[data-palette="hybrid"] .control-button {
  justify-content: center;
  gap: 5px;
  min-width: 0;
  min-height: 42px;
  padding: 7px 5px;
  border: 1px solid var(--ui-border);
  border-radius: 9px;
  color: var(--ui-navy);
  background: var(--ui-surface);
  font-weight: 500;
  line-height: 1.3;
  white-space: normal;
}
html[data-palette="hybrid"] .control-button:hover:not(:disabled) { color: var(--ui-navy); background: var(--ui-wash); }
html[data-palette="hybrid"] .game-bottomline { font-size: 10px; line-height: 1.5; }
html[data-palette="hybrid"] .game-bottomline .text-button { min-height: 36px; font-size: 11px; }
html[data-palette="hybrid"] .gentle-assist { background: #fff1d1; color: #765015; }
html[data-palette="hybrid"] .gentle-assist button { color: var(--ui-navy); }
html[data-palette="hybrid"] .connection-track { background: #e1e6e7; }
html[data-palette="hybrid"] .source-key { background: var(--ui-amber); box-shadow: 0 0 0 2px #f8e4b5; }

/* The win keeps its gold emblem and exact animation. Its actions use navy/ivory. */
html[data-palette="hybrid"] .completion-panel .primary-button {
  background: var(--ui-navy-hover);
  color: var(--ui-surface);
  border-color: #b3c6d2;
  box-shadow: none;
}
html[data-palette="hybrid"] .completion-panel .primary-button:hover { background: #2e4c65; }
html[data-palette="hybrid"] .completion-panel .secondary-button {
  background: var(--ui-surface);
  color: var(--ui-navy);
  border-color: var(--ui-surface);
  box-shadow: none;
}
html[data-palette="hybrid"] .completion-panel .secondary-button:hover { background: #e5ebee; }
html[data-palette="hybrid"] .completion-panel button:focus-visible { outline-color: var(--ui-ivory); }

/* Related puzzles use the same miniature circuit language. */
html[data-palette="hybrid"] .practice-card {
  background: var(--ui-surface);
  border-color: var(--ui-line);
  border-radius: 14px;
}
html[data-palette="hybrid"] .practice-card:hover { background: #f3f4f1; border-color: var(--ui-border); }
html[data-palette="hybrid"] .practice-meta { font-size: 9px; }
html[data-palette="hybrid"] .practice-card strong { font-size: 13px; color: var(--ui-navy); }
html[data-palette="hybrid"] .practice-card-copy>span:last-child { font-size: 11px; }
html[data-palette="hybrid"] .mini-board {
  border-color: #718698;
  background: linear-gradient(90deg,transparent 31%,#3c5465 32%,#3c5465 34%,transparent 35%,transparent 65%,#3c5465 66%,#3c5465 68%,transparent 69%),linear-gradient(transparent 31%,#3c5465 32%,#3c5465 34%,transparent 35%,transparent 65%,#3c5465 66%,#3c5465 68%,transparent 69%),#14263a;
}
html[data-palette="hybrid"] .mini-board:before { border-color: #22d3c5; }
html[data-palette="hybrid"] .mini-board:after { background: #22d3c5; }
html[data-palette="hybrid"] .side-note-icon { color: var(--ui-navy); background: var(--ui-wash); }

/* Help, privacy, lists, and share results use one dialog surface. */
html[data-palette="hybrid"] dialog {
  width: min(520px,calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  padding: 26px;
  background: var(--ui-surface);
  color: var(--ui-navy);
  border: 1px solid var(--ui-border);
  border-radius: 20px;
  box-shadow: 0 20px 70px rgba(20,38,58,.2);
}
html[data-palette="hybrid"] dialog::backdrop { background: rgba(20,38,58,.42); }
html[data-palette="hybrid"] .modal-header { padding-bottom: 16px; margin-bottom: 18px; border-bottom: 1px solid var(--ui-line); }
html[data-palette="hybrid"] .modal-header h2 { line-height: 1.2; min-width: 0; }
html[data-palette="hybrid"] .modal-header .icon-button { width: 40px; height: 40px; font-size: 24px; }
html[data-palette="hybrid"] .help-steps li { font-size: 13px; line-height: 1.75; gap: 12px; }
html[data-palette="hybrid"] .step-number { background: var(--ui-wash); color: var(--ui-navy); width: 28px; height: 28px; font-size: 12px; }
html[data-palette="hybrid"] .modal-note,
html[data-palette="hybrid"] .privacy-copy,
html[data-palette="hybrid"] .archive-empty { font-size: 13px; line-height: 1.8; }
html[data-palette="hybrid"] .privacy-copy h3 { font-size: 14px; }
html[data-palette="hybrid"] .keyboard-note {
  font-size: 12px;
  background: var(--ui-wash);
  border-radius: 10px;
  padding: 12px;
}
html[data-palette="hybrid"] .modal-actions { gap: 10px; }
html[data-palette="hybrid"] .puzzle-list-button { background: var(--ui-surface); border-color: var(--ui-border); border-radius: 11px; }
html[data-palette="hybrid"] .puzzle-list-button:hover { background: var(--ui-wash); }
html[data-palette="hybrid"] .puzzle-list-button strong { font-size: 13px; }
html[data-palette="hybrid"] .puzzle-list-button small { font-size: 11px; line-height: 1.5; }
html[data-palette="hybrid"] .puzzle-list-button>span,
html[data-palette="hybrid"] .path-list-copy { min-width: 0; }
html[data-palette="hybrid"] .puzzle-list-button .list-status { flex-shrink: 0; color: var(--ui-navy); }
html[data-palette="hybrid"] .playtest-table { font-size: 12px; }
html[data-palette="hybrid"] .playtest-table th,
html[data-palette="hybrid"] .playtest-table td { border-color: var(--ui-line); }
html[data-palette="hybrid"] .playtest-table thead { background: var(--ui-wash); }
html[data-palette="hybrid"] .playtest-table thead th { color: var(--ui-navy); font-size: 11px; }
html[data-palette="hybrid"] .return-note { color: var(--ui-navy); background: var(--ui-wash); font-size: 11px; }
html[data-palette="hybrid"] .result-copy {
  color: var(--ui-navy);
  background: #f5f6f4;
  border-color: var(--ui-border);
  font: 13px/1.75 "DM Sans",system-ui,sans-serif;
  min-height: 180px;
}
html[data-palette="hybrid"] .storage-warning { color: #805016; }

/* Quiet, readable footer and feedback. */
html[data-palette="hybrid"] .site-footer { font-size: 11px; line-height: 1.5; gap: 12px 18px; flex-wrap: wrap; }
html[data-palette="hybrid"] .site-footer>div { gap: 6px; flex-wrap: wrap; }
html[data-palette="hybrid"] .site-footer button { color: var(--ui-navy); font-size: 11px; min-height: 36px; padding: 8px 10px; border-radius: 8px; }
html[data-palette="hybrid"] .site-footer button:hover { background: var(--ui-wash); text-decoration: underline; }
html[data-palette="hybrid"] .preview-label { color: var(--ui-muted); font-size: 10px; background: var(--ui-wash); border: 1px solid var(--ui-line); padding: 5px 8px; }
html[data-palette="hybrid"] .toast { background: var(--ui-navy); color: var(--ui-surface); font-size: 13px; }
html[data-palette="hybrid"] .playtest-session-note { color: var(--ui-muted); background: var(--ui-wash); }

@media (max-width: 680px) {
  html[data-palette="hybrid"] .site-header { gap: 7px 12px; padding-top: 12px; padding-bottom: 9px; }
  html[data-palette="hybrid"] .brand { font-size: 31px; }
  html[data-palette="hybrid"] .main-nav { gap: 8px; }
  html[data-palette="hybrid"] .nav-button { min-height: 40px; padding: 9px 14px; font-size: 12px; }
  html[data-palette="hybrid"] .header-actions { gap: 6px; }
  html[data-palette="hybrid"] .header-actions .icon-button { width: 40px; height: 40px; }
}
@media (max-width: 480px) {
  html[data-palette="hybrid"] .journey-card { padding: 12px 14px; }
  html[data-palette="hybrid"] .journey-card p { margin-top: 8px; }
  html[data-palette="hybrid"] .game-controls { gap: 6px; }
  html[data-palette="hybrid"] .game-controls .control-button { font-size: 11px; }
  html[data-palette="hybrid"] .game-bottomline { flex-wrap: wrap; gap: 4px 10px; font-size: 9px; }
  html[data-palette="hybrid"] .game-bottomline .text-button { font-size: 10px; }
  html[data-palette="hybrid"] .completion-panel { padding: 12px; }
  html[data-palette="hybrid"] .completion-actions { gap: 5px; }
  html[data-palette="hybrid"] .completion-panel .primary-button,
  html[data-palette="hybrid"] .completion-panel .secondary-button { min-height: 32px; padding: 6px 9px; font-size: 10px; }
  html[data-palette="hybrid"] dialog { padding: 20px; border-radius: 16px; }
  html[data-palette="hybrid"] .modal-header { gap: 10px; }
  html[data-palette="hybrid"] .modal-header h2 { font-size: 25px; }
  html[data-palette="hybrid"] .modal-actions { display: grid; grid-template-columns: 1fr; }
  html[data-palette="hybrid"] .modal-actions button { width: 100%; min-height: 42px; }
  html[data-palette="hybrid"] .site-footer>div { width: 100%; margin-left: 0; justify-content: flex-start; gap: 3px; }
  html[data-palette="hybrid"] .site-footer .preview-label { margin-right: 0; }
}
@media (max-width: 360px) {
  html[data-palette="hybrid"] .site-header { gap: 6px 8px; padding-inline: 14px; }
  html[data-palette="hybrid"] .brand { font-size: 25px; gap: 4px; letter-spacing: -1.2px; }
  html[data-palette="hybrid"] .main-nav { gap: 6px; }
  html[data-palette="hybrid"] .nav-button { padding-inline: 12px; }
  html[data-palette="hybrid"] .completion-panel { padding: 10px; }
  html[data-palette="hybrid"] .completion-star { width: 30px; height: 30px; margin-bottom: 4px; }
  html[data-palette="hybrid"] .completion-eyebrow { margin-bottom: 4px; }
  html[data-palette="hybrid"] .completion-panel h3 { font-size: 20px; line-height: 1.15; margin-bottom: 4px; }
  html[data-palette="hybrid"] .completion-panel>p:last-of-type { font-size: 10px; line-height: 1.4; margin-bottom: 6px; }
  html[data-palette="hybrid"] .completion-actions { gap: 4px; }
  html[data-palette="hybrid"] .completion-panel .primary-button,
  html[data-palette="hybrid"] .completion-panel .secondary-button { min-height: 30px; padding: 5px 8px; font-size: 10px; }
  html[data-palette="hybrid"] .modal-header h2 { font-size: 23px; }
}
@media (pointer: coarse) {
  html[data-palette="hybrid"] .nav-button,
  html[data-palette="hybrid"] .control-button,
  html[data-palette="hybrid"] .header-actions .icon-button { min-height: 44px; }
}

/* Keep the playable board before progress in reading and keyboard order.
   The desktop grid retains the introduction/progress column beside the game. */
.main-shell {
  grid-template-areas: "intro game" "progress game";
  grid-template-rows: max-content 1fr;
  row-gap: 0;
}
.intro-panel { grid-area: intro; min-width: 0; }
.game-panel { grid-area: game; }
.progress-panel { grid-area: progress; min-width: 0; }

/* Completed milestones stay visible; the full ten-level path remains in View path. */
html .journey-card.is-complete {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}
.journey-card.is-complete .journey-card-heading { grid-column: 2; grid-row: 1; }
.journey-card.is-complete .journey-card-heading .eyebrow { display: none; }
.journey-card.is-complete h2 { grid-column: 1; grid-row: 1; font-size: 18px; line-height: 1.25; margin: 0; }
.journey-card.is-complete .journey-card-actions { grid-column: 1 / -1; }
html[data-palette="hybrid"] .journey-card.is-complete .journey-count { color: var(--ui-gold); background: var(--ui-navy); }

@media (max-width: 820px) {
  .main-shell { margin-top: 22px; gap: 20px; }
  .intro-panel h1 { font-size: clamp(28px,5vw,40px); margin: 0 0 8px; }
  .intro-panel>.eyebrow { margin-bottom: 10px; }
  .progress-panel { width: 100%; max-width: 475px; align-self: center; text-align: center; }
  .progress-panel .journey-card { margin-top: 0; }
}
@media (max-width: 480px) {
  .main-shell, .journey-mode .main-shell { margin-top: 18px; gap: 16px; }
}

/* Save failures belong beside the board, including in compact First Sparks. */
.save-status {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid #b88e4e;
  border-radius: 10px;
  background: #fff4dc;
  color: #654315;
  font-size: 12px;
  line-height: 1.6;
}
.save-status[hidden] { display: none; }
.save-status p { margin: 0; }
.save-status .text-button { color: #654315; min-height: 40px; margin-top: 4px; font-size: 12px; text-decoration: underline; }
.feedback-label { display: block; margin: 16px 0 8px; font-size: 13px; font-weight: 600; }
html[data-palette="hybrid"] .feedback-message, .feedback-message { min-height: 112px; }
.feedback-details { margin-top: 16px; font-size: 12px; line-height: 1.6; }
.feedback-details summary { cursor: pointer; padding: 5px 0; }
.feedback-details pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 11px/1.7 ui-monospace,monospace; }