/* Opt-in shared desktop tokens. Stage 1 activates these only on the homepage. */
.desktop-content-window[hidden] { display: none !important; }
.reader-focus-dock[hidden] { display: none !important; }
.study-desk-theme {
  --desk-bg: #15191c;
  --desk-panel: #1b2226;
  --desk-raised: #222c31;
  --desk-border: #3a484f;
  --desk-text: #edf1ed;
  --desk-muted: #a8b8c0;
  --desk-accent: #81d6c4;
  color-scheme: dark;
}
body.study-desk-theme,
body.study-desk-theme.desktop-study-shell.home-blank-shell {
  color: var(--desk-text);
  background: var(--desk-bg);
  font-family: "Manrope", "Noto Sans KR", system-ui, sans-serif;
}
body.study-desk-theme::before,
body.study-desk-theme::after { display: none; }
body.study-desk-theme.desktop-study-shell > main.home-blank-canvas {
  width: auto;
  max-width: 1700px;
  min-height: calc(100dvh - 130px);
  height: auto;
  margin: 0 auto;
  padding: clamp(20px, 3vw, 48px);
  color: var(--desk-text);
  background: transparent;
  box-shadow: none;
  border: 0;
  overflow: visible;
}
.study-desk-theme .desk-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  align-items: start;
  gap: clamp(20px, 2.5vw, 38px);
}
.study-desk-theme .desk-window {
  min-width: 0;
  color: var(--desk-text);
  background: linear-gradient(135deg, #20282d 0, var(--desk-panel) 220px);
  border: 1px solid var(--desk-border);
  border-radius: 9px;
  box-shadow: 0 12px 32px #0002;
}
.study-desk-theme .desk-titlebar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--desk-border);
  color: var(--desk-text);
  font: 0.75rem/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.12em;
}
.study-desk-theme .desk-status-dot {
  width: 7px; height: 7px; flex: 0 0 auto;
  border-radius: 50%; background: var(--desk-accent);
}
.study-desk-theme .desk-status-warm { background: #e7aa69; }
.study-desk-theme .desk-content { padding: clamp(16px, 2vw, 24px); }
.study-desk-theme .desk-kicker {
  margin: 0 0 18px;
  color: var(--desk-accent);
  font: 0.7rem/1.6 ui-monospace, monospace;
  letter-spacing: 0.12em;
}
.study-desk-theme .desk-content h1 {
  max-width: none;
  margin: 0 0 10px;
  color: var(--desk-text);
  font-size: clamp(1.8rem, 2.8vw, 2.7rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.035em;
}
.study-desk-theme .desk-layout h2 {
  margin: 0 0 16px; color: var(--desk-text);
  font-size: 1.12rem; font-weight: 650; line-height: 1.5;
}
.study-desk-theme .desk-layout p {
  margin: 0 0 16px; font-size: 0.94rem; line-height: 1.8;
  color: var(--desk-muted);
}
.study-desk-theme .desk-content .desk-kicker { margin-bottom: 8px; }
.study-desk-theme .desk-content h2 { margin-bottom: 8px; }
.study-desk-theme .desk-content p { margin-bottom: 8px; }
.study-desk-theme .desk-lead { max-width: none; }
.study-desk-theme .desk-resume { margin: 18px 0; padding-bottom: 16px; border-bottom: 1px solid var(--desk-border); }
.study-desk-theme .desk-resume p:last-child { margin-bottom: 0; }
.study-desk-theme .desk-side { display: grid; min-width: 0; gap: 24px; }
.study-desk-theme .desk-panel-content { padding: 24px; }
.study-desk-theme .desk-layout a { color: var(--desk-accent); }
.study-desk-theme .desk-curricula {
  display: flex; flex-wrap: wrap; gap: 8px 24px; min-height: 45px;
  border-bottom: 1px solid var(--desk-border); margin-bottom: 10px;
}
.study-desk-theme .desk-curricula button {
  min-height: 44px; padding: 10px 0; border: 0; border-bottom: 2px solid transparent;
  border-radius: 0; color: var(--desk-muted); background: transparent;
  font: inherit; font-size: 0.88rem; cursor: pointer;
}
.study-desk-theme .desk-curricula button[aria-pressed="true"] {
  color: var(--desk-accent); border-bottom-color: var(--desk-accent);
}
.study-desk-theme .desk-course-group h3 {
  margin: 18px 0 6px; color: var(--desk-muted); font-size: 0.84rem; font-weight: 600;
}
.study-desk-theme .desk-course-link {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  min-width: 0; min-height: 48px; padding: 10px 6px;
  color: var(--desk-text); border-bottom: 1px solid var(--desk-border);
  text-decoration: none;
}
.study-desk-theme .desk-course-link:hover { background: #81d6c408; }
.study-desk-theme .desk-course-copy { min-width: 0; }
.study-desk-theme .desk-course-link strong { display: block; color: var(--desk-text); font-size: 0.96rem; font-weight: 600; }
.study-desk-theme .desk-course-copy small { display: block; margin-top: 5px; color: var(--desk-muted); font-size: 0.8rem; line-height: 1.65; }
.study-desk-theme .desk-link-arrow { flex: 0 0 auto; }
.study-desk-theme .desk-blog-entry { margin-top: 20px; }
.study-desk-theme .desk-text-link {
  display: inline-flex; gap: 12px; min-height: 44px; align-items: center;
  padding: 6px 0; color: var(--desk-accent); background: none; border: 0;
  font: inherit; font-size: 0.9rem; cursor: pointer;
}
.study-desk-theme .desk-focus > summary { cursor: pointer; list-style: none; }
.study-desk-theme .desk-focus > summary::-webkit-details-marker { display: none; }
.study-desk-theme .desk-collapse-hint { margin-left: auto; color: var(--desk-muted); font: 0.65rem/1.5 system-ui, sans-serif; letter-spacing: 0; }
.study-desk-theme .desk-field { display: grid; gap: 8px; color: var(--desk-muted); font-size: 0.82rem; }
.study-desk-theme .desk-field select { width: 100%; min-width: 0; padding: 10px; border: 1px solid var(--desk-border); border-radius: 4px; color: var(--desk-text); background: var(--desk-bg); font: inherit; }
.study-desk-theme [data-desk-timer-slot] .desktop-focus-timer-window {
  position: static !important; inset: auto !important; width: 100% !important;
  min-width: 0; max-width: none; height: auto; margin: 0 0 20px;
  border: 0; background: transparent; box-shadow: none; transform: none;
}
.study-desk-theme [data-desk-timer-slot] .focus-timer-window-titlebar { display: none; }
.study-desk-theme [data-desk-timer-slot] .focus-timer-window-body { padding: 0; }
.study-desk-theme [data-desk-timer-slot] .focus-timer-stack { position: static; width: 100%; }
.study-desk-theme [data-desk-timer-slot] .focus-player {
  position: static; width: 100%; min-width: 0; height: auto; min-height: 0; padding: 12px 0;
  color: var(--desk-text); background: transparent; border: 0; box-shadow: none;
  display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 12px;
}
.study-desk-theme [data-desk-timer-slot] .focus-player > strong { grid-column: 1 / -1; grid-row: 1; font-size: 2.8rem; font-weight: 500; color: var(--desk-text); font-variant-numeric: tabular-nums; }
.study-desk-theme [data-desk-timer-slot] .focus-play { width: 44px; height: 44px; color: #142c28; background: var(--desk-accent); border: 0; border-radius: 50%; }
.study-desk-theme [data-desk-timer-slot] .focus-player-copy { min-width: 0; color: var(--desk-muted); }
.study-desk-theme [data-desk-timer-slot] .focus-cycle-prompt { position: static; width: 100%; background: var(--desk-raised); color: var(--desk-text); border-color: var(--desk-border); }
.study-desk-theme .desk-focus .desk-titlebar { min-height: 36px; padding: 8px 12px; }
.study-desk-theme .desk-focus .desk-panel-content { padding: 10px 12px 12px; }
.study-desk-theme .desk-focus [data-desk-timer-slot] .desktop-focus-timer-window { margin-bottom: 4px; }
.study-desk-theme .desk-focus [data-desk-timer-slot] .focus-player {
  grid-template-columns: minmax(0, 1fr) 32px;
  gap: 3px 8px;
  padding: 0;
}
.study-desk-theme .desk-focus [data-desk-timer-slot] .focus-player > strong {
  grid-column: 1;
  grid-row: 1;
  font-size: 1.85rem;
  line-height: 1.15;
}
.study-desk-theme .desk-focus [data-desk-timer-slot] .focus-play {
  grid-column: 2;
  grid-row: 1;
  width: 32px;
  height: 32px;
  font-size: 0.72rem;
}
.study-desk-theme .desk-focus [data-desk-timer-slot] .focus-player-copy { grid-column: 1 / -1; grid-row: 2; }
.study-desk-theme .desk-focus .desk-field { gap: 4px; font-size: 0.72rem; }
.study-desk-theme .desk-focus .desk-field select { min-height: 32px; padding: 5px 8px; }
.study-desk-theme .desk-session { overflow: hidden; }
.study-desk-theme .desk-timer-controls { display: flex; align-items: end; gap: 8px; }
.study-desk-theme .desk-timer-controls .desk-field { flex: 1; min-width: 0; }
.study-desk-theme .desk-timer-controls [data-focus-reset] {
  flex: 0 0 auto; min-height: 32px; padding: 5px 8px;
  border: 1px solid var(--desk-border); border-radius: 4px;
  color: var(--desk-accent); background: transparent; font: inherit; font-size: 0.72rem; cursor: pointer;
}
.study-desk-theme .desk-visitors .desk-panel-content { padding: 14px 16px 12px; }
.study-desk-theme .desk-visitor-counts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.study-desk-theme .desk-visitor-counts > div { display: grid; gap: 4px; min-width: 0; }
.study-desk-theme .desk-visitor-counts > div + div {
  padding-left: 16px;
  border-left: 1px solid var(--desk-border);
}
.study-desk-theme .desk-visitor-counts span { color: var(--desk-muted); font-size: 0.72rem; }
.study-desk-theme .desk-visitor-counts strong {
  color: var(--desk-text);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.study-desk-theme .desk-visitors .desk-visitor-note {
  margin: 12px 0 0;
  color: var(--desk-muted);
  font-size: 0.68rem;
  line-height: 1.5;
}
.study-desk-theme .desk-layout :is(p, a, h1, h2, h3, small) { overflow-wrap: anywhere; }
.study-desk-theme :is(a, button, summary, select):focus-visible { outline: 2px solid var(--desk-accent); outline-offset: 4px; }
.study-desk-theme .desk-skip { position: absolute; top: 0; left: 16px; z-index: 120; padding: 12px; background: var(--desk-panel); color: var(--desk-text); transform: translateY(-200%); }
.study-desk-theme .desk-skip:focus { transform: none; }
.study-desk-theme.desktop-study-shell .workspace-topbar,
.study-desk-theme.desktop-study-shell .site-header,
.study-desk-theme.desktop-study-shell .main-nav,
.study-desk-theme.desktop-study-shell > .home-footer {
  background: #171e22; color: var(--desk-text); border-color: var(--desk-border); box-shadow: none;
}
.study-desk-theme .workspace-info-clock { background: transparent; border-color: var(--desk-border); box-shadow: none; }
.study-desk-theme .workspace-info-clock-time { color: var(--desk-text); }
.study-desk-theme.desktop-study-shell .signup-button {
  color: var(--desk-text);
  background: #274842;
  border-color: #4b756b;
}
.study-desk-theme.desktop-study-shell .signup-button:hover,
.study-desk-theme.desktop-study-shell .signup-button.active {
  color: #142c28;
  background: var(--desk-accent);
  border-color: var(--desk-accent);
}
.study-desk-theme .workspace-breadcrumb > strong,
.study-desk-theme .workspace-breadcrumb > i { display: none; }
.study-desk-theme.desktop-study-shell .main-nav > button { color: var(--desk-muted); }
.study-desk-theme.desktop-study-shell .main-nav > button:hover,
.study-desk-theme.desktop-study-shell .main-nav > button.active { color: var(--desk-accent); background: #223b3d; }
.study-desk-theme.desktop-study-shell .brand-mark { background: #274842; color: var(--desk-accent); }
.study-desk-theme .menu-window-titlebar,
.study-desk-theme .desktop-content-window > .content-window-titlebar { background: var(--desk-raised); color: var(--desk-text); border-color: var(--desk-border); font-family: ui-monospace, monospace; }
.study-desk-theme.desktop-study-shell .main-nav :is(.nav-hover-panel, .nav-hover-mindmap, .nav-lesson-flyout, .nav-topic-list) {
  color: var(--desk-text); background: var(--desk-panel); border-color: var(--desk-border);
}
/* All AP and Korean curriculum flyouts share this course heading. */
.study-desk-theme.desktop-study-shell .main-nav .nav-lesson-flyout-heading {
  color: var(--desk-text); background: var(--desk-panel); border-color: var(--desk-border);
}
.study-desk-theme.desktop-study-shell .main-nav .nav-lesson-flyout-heading .nav-mindmap-heading-icon {
  color: var(--desk-accent);
}
.study-desk-theme.desktop-study-shell .main-nav :is(.nav-hover-item, .nav-mindmap-node, .nav-lesson-link, .nav-lesson-group-summary) {
  color: var(--desk-text); background: transparent; border-color: var(--desk-border);
}
.study-desk-theme.desktop-study-shell .main-nav :is(.nav-hover-panel, .nav-hover-mindmap, .nav-lesson-flyout) :is(b, strong) { color: var(--desk-text); }
.study-desk-theme.desktop-study-shell .main-nav :is(.nav-hover-panel, .nav-hover-mindmap, .nav-lesson-flyout) small { color: var(--desk-muted); }
.study-desk-theme.desktop-study-shell .main-nav :is(.nav-hover-item, .nav-mindmap-node, .nav-lesson-link, .nav-lesson-group-summary):hover,
.study-desk-theme.desktop-study-shell .nav-lesson-group[open] > .nav-lesson-group-summary { background: #263b3d; color: var(--desk-accent); }
.study-desk-theme.desktop-study-shell > .home-footer { position: relative; inset: auto; font-weight: 500; }
@media (max-width: 1100px) {
  .study-desk-theme .desk-layout { grid-template-columns: minmax(0, 1fr); }
  .study-desk-theme .desk-side { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .study-desk-theme .desk-side > .desk-window { height: 100%; }
  .study-desk-theme .desk-panel-content { padding: 18px; }
}
@media (max-width: 920px) {
  .study-desk-theme .reader-focus-dock {
    position: fixed; z-index: 80; inset: auto 0 0;
    max-height: min(40dvh, 360px); overflow-y: auto;
    padding: 0 16px env(safe-area-inset-bottom);
    color: var(--desk-text); background: var(--desk-panel);
    border-top: 1px solid var(--desk-border);
  }
  .study-desk-theme .reader-focus-dock > summary { min-height: 48px; padding: 12px 0; cursor: pointer; }
  .study-desk-theme .reader-focus-dock > button {
    min-height: 44px; padding: 10px 14px; margin-bottom: 12px;
    color: var(--desk-accent); background: transparent; border: 1px solid var(--desk-border); border-radius: 4px;
  }
  body.study-desk-theme.reader-focus-visible:not(.course-route-open) > main {
    padding-bottom: calc(var(--reader-focus-height, 48px) + 24px);
  }
  body.study-desk-theme.course-route-open { overflow: hidden; height: 100dvh; min-height: 0; padding-bottom: 0; }
  body.study-desk-theme.course-route-open > main,
  body.study-desk-theme.course-route-open > footer { display: none !important; }
  .study-desk-theme.course-route-open .desktop-content-window:not(.course-route-current) { display: none !important; }
  .study-desk-theme.course-route-open .desktop-content-window.course-route-current {
    position: fixed; inset: 54px 0 var(--reader-focus-height, 0px) !important; width: 100% !important;
    height: calc(100dvh - 54px - var(--reader-focus-height, 0px)) !important; max-height: none; min-height: 0;
    border-radius: 0; resize: none; transform: none !important;
  }
  body.study-desk-theme.desktop-study-shell > main.home-blank-canvas { padding: 20px 16px; margin: 0; }
  .study-desk-theme.desktop-study-shell .site-header { background: transparent; }
  .study-desk-theme .desk-side { grid-template-columns: minmax(0, 1fr); }
  .study-desk-theme .desk-content { padding: 16px; }
  .study-desk-theme .workspace-info-clock { max-width: calc(100vw - 110px); }
}
@media (prefers-reduced-motion: reduce) {
  .study-desk-theme *, .study-desk-theme *::before, .study-desk-theme *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}