/* Ruch 13: quiet surfaces and a board-first training workspace.
   Append after experience-v12.css. All colors follow the selected appearance.
   Board sizing, square geometry and focus-mode reservations remain untouched. */

/* One rhythm across the navigation and the page frame. */
.app-shell .topbar > strong { letter-spacing: -.15px; }
.app-shell .top-search { background: transparent; border-color: var(--line); }
.app-shell .avatar { border: 1px solid var(--line); box-shadow: none; background: var(--green-soft); color: var(--green); }
.app-shell .daily-chip { font-variant-numeric: tabular-nums; }
.app-shell .sidebar .nav-button { letter-spacing: -.1px; }
.app-shell .sidebar .nav-button.active { color: var(--ink); background: var(--green-soft); }
.app-shell .sidebar .nav-button.active .icon { color: var(--green); }
.app-shell .sidebar-challenge { box-shadow: none; border-color: var(--line); }
.app-shell .sidebar-challenge .progress-track { height: 4px; background: var(--line); }
.app-shell .sidebar-challenge .progress-fill { background: var(--green); }
.app-shell .sidebar .nav-group-label { font-size: 9px; letter-spacing: 1.3px; }
.app-shell .page-heading { margin-bottom: 22px; }
.app-shell .page-heading h1 { letter-spacing: -.75px; }

/* The four training modes form one small, predictable control. */
.training-workspace .puzzle-hub-tabs {
  gap: 3px;
  padding: 4px;
  margin: 0;
  border-radius: 10px;
  background: color-mix(in srgb,var(--paper) 80%,var(--bg));
}
.training-workspace .puzzle-hub-tabs .pill {
  min-height: 53px;
  padding: 7px 3px;
  gap: 5px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
}
.training-workspace .puzzle-hub-tabs .pill.active {
  color: var(--green);
  background: var(--green-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb,var(--green) 18%,transparent);
}
.training-workspace .puzzle-hub-tabs .pill:hover:not(.active) {
  color: var(--ink);
  background: var(--surface-hover);
}
.training-workspace .puzzle-hub-tabs .icon { width: 17px; height: 17px; }

/* Puzzle information stays subordinate to the board and the current action. */
.training-workspace .right-panel { gap: 12px; }
.training-workspace .right-panel > .panel {
  border-radius: 12px;
  border-color: var(--line);
  box-shadow: none;
}
.training-workspace .puzzle-main-panel { padding: 19px; }
.training-workspace .puzzle-main-panel > .panel-header {
  align-items: center;
  margin-bottom: 12px;
}
.training-workspace .puzzle-main-panel .training-badge {
  margin: 0;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: none;
  line-height: 1.4;
}
.training-workspace .puzzle-main-panel .training-badge .icon { width: 16px; height: 16px; color: var(--green); }
.training-workspace .puzzle-panel-tools { gap: 7px; }
.training-workspace .puzzle-panel-tools .timer { font-size: 11px; }
.training-workspace .puzzle-favorite { width: 29px; height: 29px; border-radius: 6px; }
.training-workspace .puzzle-rating-header {
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0 14px;
  margin-bottom: 18px;
  border-bottom-color: var(--line);
}
.training-workspace .puzzle-rating-header > span { font-size: 11px; }
.training-workspace .puzzle-rating-header > strong { font-size: 23px; letter-spacing: -.5px; line-height: 1; }
.training-workspace .puzzle-rating-header .puzzle-level-label {
  margin-left: auto;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: 10px;
  text-align: right;
}
.training-workspace .puzzle-level-label b { font-size: 15px; font-weight: 650; line-height: 1.2; }
.training-workspace .puzzle-player-strip { gap: 11px; margin-bottom: 15px; }
.training-workspace .puzzle-player-strip > .puzzle-player-avatar {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 11px;
  background: var(--green-soft);
  color: var(--green);
}
.training-workspace .puzzle-player-strip strong { font-size: 16px; font-weight: 700; letter-spacing: -.2px; }
.training-workspace .puzzle-player-strip small { font-size: 11px; }
.training-workspace .puzzle-main-panel .status-message {
  align-items: center;
  min-height: 44px;
  padding: 11px 12px;
  margin: 12px 0;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
}
.training-workspace .puzzle-main-panel .status-message.info {
  border: 1px solid var(--line);
  color: var(--ink);
  background: color-mix(in srgb,var(--surface-raised) 70%,var(--paper));
}
.training-workspace .puzzle-main-panel .status-message > .icon { margin-top: 0; width: 16px; height: 16px; }
.training-workspace .puzzle-main-panel .puzzle-combination-strip { margin: 15px 0 2px; gap: 6px; }
.training-workspace .puzzle-main-panel .combination-dot { width: 6px; height: 6px; flex-basis: 6px; }
.training-workspace .puzzle-main-panel .puzzle-combination-strip > span { margin-left: 5px; font-size: 10px; }
.training-workspace .puzzle-main-panel .puzzle-toolrow {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 17px;
}
.training-workspace .puzzle-main-panel .puzzle-toolrow .button { min-height: 38px; padding: 8px 10px; border-radius: 7px; }
.training-workspace .puzzle-main-panel .puzzle-toolrow [data-action="hint"] { flex: 1; }
.training-workspace .puzzle-main-panel > .puzzle-session-strip { margin-top: 19px; padding-top: 14px; gap: 8px; }
.training-workspace .puzzle-main-panel > .puzzle-session-strip .progress-track { height: 5px; border-radius: 3px; }
.training-workspace .puzzle-main-panel > .puzzle-session-strip strong { font-size: 14px; }
.training-workspace .puzzle-played-line { gap: 5px; padding: 0; }
.training-workspace .puzzle-played-line .move-token { min-height: 25px; padding: 4px 7px; font-size: 12px; background: var(--surface-raised); border: 0; }
.training-workspace .puzzle-result-card { padding: 14px; border-radius: 9px; }
.training-workspace .puzzle-result-stats { padding-top: 11px; border-top: 1px solid color-mix(in srgb,var(--green) 15%,var(--line)); gap: 8px; }
.training-workspace .puzzle-result-stats span { font-size: 10px; }
.training-workspace .puzzle-result-stats strong { font-size: 16px; }
.training-workspace .puzzle-session-panel .panel-header { margin-bottom: 12px; }
.training-workspace .puzzle-session-numbers { gap: 10px; margin-top: 12px; padding-top: 13px; }
.training-workspace .puzzle-session-numbers strong { font-size: 17px; }
.training-workspace .puzzle-session-numbers small { font-size: 10px; }
.training-workspace .puzzle-rating-spark.empty { min-height: 40px; padding: 6px 0; text-align: left; justify-content: flex-start; }
.training-workspace .puzzle-filter-panel { padding: 15px 18px; }
.training-workspace .puzzle-filter-panel > summary { min-height: 24px; font-size: 12px; font-weight: 600; }
.training-workspace .puzzle-filter-panel[open] > summary { padding-bottom: 13px; margin-bottom: 13px; border-bottom: 1px solid var(--line); }
.training-workspace .puzzle-filter-content .field { margin-bottom: 12px; }
.training-workspace .puzzle-filter-content .field label { font-size: 11px; }
.training-workspace .puzzle-recent-panel .panel-header { margin-bottom: 6px; }
.training-workspace .puzzle-recent-list { margin-top: 6px; }
.training-workspace .puzzle-recent-item { padding: 10px 4px; border-radius: 5px; }

/* Transport and hints share the same restrained visual vocabulary. */
.puzzle-replay-controls { padding-top: 10px; }
.puzzle-replay-status { padding-inline: 1px; }
.puzzle-replay-buttons { gap: 4px; }
.puzzle-replay-buttons .icon-button {
  width: 43px;
  height: 34px;
  border-color: transparent;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
}
.puzzle-replay-buttons .icon-button:hover:not(:disabled) { color: var(--ink); border-color: var(--line); background: var(--surface-raised); }
.puzzle-replay-buttons .icon-button[data-action="puzzle-back"],
.puzzle-replay-buttons .icon-button[data-action="puzzle-forward"] { color: var(--ink); background: var(--surface-raised); }
.puzzle-replay-buttons .icon-button:disabled { opacity: .26; }
.puzzle-replay-controls p { margin-top: 5px; opacity: .8; }
.puzzle-hint-card { margin: 0; padding: 14px 15px; border-radius: 10px; border-left-width: 3px; background: color-mix(in srgb,var(--green) 7%,var(--paper)); }
.puzzle-hint-card .puzzle-hint-heading { margin-bottom: 8px; }
.puzzle-hint-card p { line-height: 1.65; }
.puzzle-hint-arrow .puzzle-hint-arrow-outline { stroke-width: 13; opacity: .3; }
.puzzle-hint-arrow polygon { stroke-width: 1.4; stroke-opacity: .3; }
.puzzle-review-notice { margin-bottom: 0; border-color: color-mix(in srgb,var(--green) 40%,var(--line)); }
.board-study-tools .button { border-radius: 6px; }
.board-study-tools .button[aria-pressed="false"] { background: transparent; border-color: var(--line); color: var(--muted); }
.board-study-tools small { line-height: 1.4; }
.board-study-tools [data-action="board-appearance"] { margin-left: auto; color: var(--muted); background: transparent; border-color: transparent; }
.board-study-tools [data-action="board-appearance"]:hover { color: var(--ink); border-color: var(--line); background: var(--surface-raised); }
.mainline-board-column .board-study-tools small { display: none; }

/* The board's appearance picker stays in context and never replaces a game. */
.modal.board-appearance-modal {
  display: flex;
  flex-direction: column;
  width: min(720px,calc(100vw - 36px));
  max-width: 720px;
  max-height: min(85dvh,840px);
  padding: 0;
  overflow: hidden;
  border-color: var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--paper);
}
.board-appearance-heading {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}
.board-appearance-heading h2 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -.3px; }
.board-appearance-heading .icon-button { width: 32px; height: 32px; color: var(--muted); }
.board-appearance-content { overflow: auto; min-height: 0; padding: 0 22px 22px; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.board-appearance-content .appearance-card { margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.board-appearance-content .appearance-card > h2 { display: none; }
.board-appearance-content .appearance-card .setting-label { margin-top: 18px; }
.board-appearance-content .appearance-card h3 { margin-top: 23px; font-size: 13px; }
.board-appearance-content .piece-theme-options { grid-template-columns: repeat(3,minmax(0,1fr)); }

/* A compact home with generous copy spacing and contained artwork. */
.home-v11 .home-welcome { margin-bottom: 25px; }
.home-v11 .home-kicker { color: var(--muted); letter-spacing: 1.45px; }
.home-v11 .home-welcome h1 { letter-spacing: -1.1px; }
.home-v11 .home-action { border-radius: 13px; box-shadow: none; }
.home-v11 .home-action:not(.home-play) { background: var(--paper); }
.home-v11 .home-play { background: color-mix(in srgb,var(--green) 8%,var(--paper)); }
.home-v11 .home-action .home-card-tag { margin-bottom: 15px; }
.home-v11 .home-action h2 { font-size: 23px; line-height: 1.18; max-width: 180px; }
.home-v11 .home-action p { line-height: 1.65; }
.home-v11 .home-cta { display: inline-flex; align-items: center; gap: 10px; }
.home-v11 .home-cta > span { margin: 0; }
.home-v11 .home-middle > .panel { border-radius: 12px; }
.home-v11 .home-shortcuts > button { border-radius: 7px; padding: 10px 6px; }
.home-v11 .home-shortcuts > button:hover { background: var(--surface-raised); }
.home-v11 .home-course { border-radius: 10px; min-height: 87px; }
.home-v11 .home-course strong { line-height: 1.4; }

/* Catalog filters and courses retain every detail without a noisy card frame. */
.page-openings .opening-catalog-toolbar { padding: 0; margin-bottom: 15px; }
.page-openings .opening-course-grid { gap: 15px; }
.page-openings .illustrated-course-card { border-radius: 12px; }
.page-openings .illustrated-course-card .opening-course-preview { background: color-mix(in srgb,var(--green) 3%,var(--paper)); }
.page-openings .illustrated-course-card .opening-course-copy { gap: 10px; padding: 17px 18px; }
.page-openings .illustrated-course-card .opening-card-head strong { font-size: 17px; font-weight: 700; letter-spacing: -.3px; }
.page-openings .illustrated-course-card .opening-card-description { font-size: 12px; line-height: 1.55; }
.page-openings .catalog-results-count { margin: 9px 0 17px; }
.page-opening-course .mainline-lesson { border-radius: 12px; }
.page-opening-course .mainline-speech { border-radius: 10px; padding: 17px 18px; line-height: 1.65; }
.page-opening-course .mainline-score { margin-top: 20px; }
.page-opening-course .opening-mode-card { border-radius: 10px; box-shadow: none; }
.page-themes .theme-card { border-radius: 12px; box-shadow: none; }
.page-themes .theme-card .theme-description { line-height: 1.55; }

/* Swatches are choices, rather than oversized decorative cards. */
.page-settings .settings-card { border-radius: 12px; }
.page-settings .settings-card h2 { margin-bottom: 19px; font-size: 18px; letter-spacing: -.35px; }
.page-settings .appearance-card .appearance-options { gap: 8px; }
.page-settings .appearance-card :is(.appearance-option,.color-theme-option,.board-theme-option,.piece-theme-option) { border-radius: 8px; }
.page-settings .appearance-card :is(.color-theme-option,.piece-theme-option):hover { color: var(--ink); border-color: var(--green); background: var(--surface-hover); }
.page-settings .appearance-card :is(.color-theme-option,.piece-theme-option).active { background: var(--green-soft); border-color: var(--green); }
.page-settings .setting-row { padding-block: 13px; gap: 15px; }
.page-settings .training-settings .hint-text { margin-top: 0; }
.page-settings .storage-settings .muted { line-height: 1.7; }

/* Focus mode already has exact height reservations; do not add to its header. */
.focus-mode .topbar { border: 0; padding-bottom: 0; }
.focus-mode .training-workspace .puzzle-main-panel { padding: 17px; }
.focus-mode .training-workspace .puzzle-rating-header { padding-top: 6px; margin-bottom: 15px; }
.focus-mode .training-workspace .puzzle-player-strip { margin-bottom: 12px; }
.focus-mode .training-workspace .puzzle-main-panel > .puzzle-session-strip { margin-top: 17px; }

@media (hover:hover) and (pointer:fine) {
  .home-v11 .home-action:hover { transform: translateY(-2px); }
  .page-openings .illustrated-course-card:hover .opening-course-preview > .ruch-art { transform: translateY(-2px); }
}
@media (min-width:901px) {
  .app-shell:not(.focus-mode) .training-workspace .right-panel { scrollbar-color: var(--line) transparent; }
}
@media (max-width:1100px) and (min-width:601px) {
  .training-workspace .puzzle-main-panel { padding: 17px; }
  .training-workspace .puzzle-main-panel .puzzle-toolrow .button { padding-inline: 8px; font-size: 10px; }
  .home-v11 .home-action h2 { font-size: 21px; }
}
@media (max-width:1100px) {
  .board-study-tools small { display: none; }
}
@media (max-width:700px) {
  .page-openings .illustrated-course-card .opening-course-copy { padding: 15px; }
}
@media (max-width:600px) {
  .app-shell .topbar-right { gap: 6px; }
  .app-shell .top-search { padding: 6px; border-color: transparent; }
  .app-shell .topbar .avatar { width: 30px; height: 30px; }
  .training-workspace .right-panel { gap: 11px; }
  .training-workspace .puzzle-main-panel { padding: 18px; }
  .training-workspace .puzzle-hub-tabs .pill { min-height: 55px; font-size: 10px; padding-inline: 2px; }
  .training-workspace .puzzle-rating-header { margin-bottom: 16px; }
  .training-workspace .puzzle-player-strip strong { font-size: 16px; }
  .training-workspace .puzzle-main-panel .puzzle-toolrow .button { min-height: 41px; }
  .training-workspace .puzzle-filter-panel { padding: 14px 17px; }
  .training-workspace .puzzle-filter-panel > summary { min-height: 30px; }
  .puzzle-hint-card { padding: 13px 15px; }
  .puzzle-replay-buttons .icon-button { width: 40px; min-width: 36px; height: 34px; }
  .home-v11 .home-action h2 { max-width: 190px; font-size: 23px; }
  .home-v11 .home-course { min-height: 81px; }
  .home-v11 .home-welcome { margin-bottom: 21px; }
  .page-settings .settings-card h2 { margin-bottom: 17px; }
  .focus-mode .topbar { margin-bottom: 8px; padding-bottom: 0; }
  .modal.board-appearance-modal { width: calc(100vw - 26px); max-height: 89dvh; border-radius: 12px; }
  .board-appearance-heading { padding: 14px 16px; }
  .board-appearance-heading h2 { font-size: 16px; }
  .board-appearance-content { padding: 0 16px 18px; }
  .board-appearance-content .piece-theme-options { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width:360px) {
  .training-workspace .puzzle-main-panel { padding: 15px; }
  .training-workspace .puzzle-main-panel .puzzle-toolrow { gap: 4px; }
  .training-workspace .puzzle-main-panel .puzzle-toolrow .button { padding-inline: 7px; font-size: 10px; }
  .home-v11 .home-action h2 { max-width: 160px; font-size: 21px; }
}
@media (prefers-reduced-motion:reduce) {
  .home-v11 .home-action,
  .page-openings .opening-course-preview > .ruch-art { transition: none; }
  .home-v11 .home-action:hover,
  .page-openings .illustrated-course-card:hover .opening-course-preview > .ruch-art { transform: none; }
}
[data-reduced-motion="true"] .home-v11 .home-action:hover,
[data-reduced-motion="true"] .page-openings .illustrated-course-card:hover .opening-course-preview > .ruch-art { transform: none; }