/* Session Hub: one playable mission, optional controls. Educational state is untouched. */
.map-shell[data-panel="session"] > :is(.map-heading, .branch-rail, .learning-path, .journey-notice) { display: none; }
.map-shell[data-panel="session"] { padding-bottom: calc(var(--nav-h) + 30px); }
.session-sheet {
  position: relative; z-index: 1; inset: auto; transform: none;
  width: min(680px, 100%); max-height: none; margin: 26px auto 0; padding: 0;
  border: 0; border-radius: 0; background: none; box-shadow: none; overflow: visible;
}
.session-sheet > header { margin-bottom: 20px; align-items: center; }
.session-sheet > header h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.session-sheet > header p { letter-spacing: .09em; }
.session-sheet > header button { width: 44px; height: 44px; }
.session-sheet-content { display: block; }
.session-sheet .session-hub { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 0; border: 0; background: none; }
.session-sheet .session-hero {
  position: relative; display: grid; grid-template-columns: 1fr; gap: 18px; align-content: start;
  min-width: 0; width: 100%; margin: 0; padding: 24px;
  border: 1px solid #68d9d745; border-radius: 24px;
  background: radial-gradient(ellipse at 95% 0, #3e979928, transparent 65%), linear-gradient(145deg, #102c48, #0b2038);
  box-shadow: 0 12px 30px #0003;
}
.session-sheet .session-hero > div { display: grid; gap: 14px; }
.session-sheet .session-eyebrow { margin: 0; color: var(--teal); text-transform: uppercase; letter-spacing: .09em; font-size: .68rem; font-weight: 850; }
.session-sheet .session-eyebrow span { color: var(--muted); }
.session-sheet .session-hero h3 { margin: 0; font-size: clamp(1.65rem, 3vw, 2.25rem); color: var(--text); line-height: 1.18; text-transform: none; text-wrap: balance; }
.session-sheet .session-focus-title { font-size: 1rem; color: var(--teal); line-height: 1.4; }
.session-sheet .session-purpose { color: #c4d6e5; font-size: .95rem; line-height: 1.6; margin: 0; text-transform: none; font-weight: 400; }
.session-sheet .session-provenance { color: #d4c4ff; font-size: .8rem; }
.session-block-progress { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 14px; width: 100%; color: var(--muted); font-size: .8rem; }
.session-block-progress progress, .mission-choice progress { appearance: none; width: 100%; height: 7px; border: 0; border-radius: 20px; overflow: hidden; background: #071a32; }
.session-block-progress progress::-webkit-progress-bar, .mission-choice progress::-webkit-progress-bar { background: #294765; border-radius: 20px; }
.session-block-progress progress::-webkit-progress-value, .mission-choice progress::-webkit-progress-value { background: var(--teal); border-radius: 20px; transition: width .2s ease; }
.session-block-progress progress::-moz-progress-bar, .mission-choice progress::-moz-progress-bar { background: var(--teal); border-radius: 20px; }
.session-sheet .session-hero :is([data-entry-start-recommended], [data-adaptive-resume], [data-adaptive-start], .session-play) { display: grid; place-items: center; text-decoration: none; width: 100%; min-height: 56px; border-radius: 14px; background: var(--gold); color: var(--ink); border-color: var(--gold); box-shadow: 0 3px 0 #ae7d27; font-size: 1rem; font-weight: 850; }
.session-sheet .session-hero button:active { translate: 0 2px; box-shadow: none; }
.session-sheet summary { display: list-item; min-height: 48px; padding-block: 14px; align-content: center; font-size: .86rem; cursor: pointer; font-weight: 650; color: #d1e4ee; }
.session-sheet summary > span { float: right; color: var(--teal); }
.session-sheet details { border-top: 1px solid var(--line); padding: 0; }
.session-sheet details[open] > summary { color: var(--teal); }
.session-sheet details > :not(summary) { margin-top: 0; }
.session-sheet details p { margin: 0 0 12px; font-size: .84rem; line-height: 1.5; color: var(--muted); font-weight: 400; text-transform: none; }
.session-sheet details button { margin-bottom: 10px; }
.session-sheet details[open] > :last-child:not(summary) { margin-bottom: 12px; }
.session-sheet .session-support { display: grid; gap: 12px; min-width: 0; align-content: start; }
.session-sheet .session-support > details { border: 1px solid var(--line); border-radius: 16px; padding: 0 16px; background: #0a203bea; }
.session-sheet .session-support > .session-options { border: 0; border-radius: 0; background: none; }
.session-sheet .session-options > summary { list-style: none; color: var(--muted); font-size: .8rem; font-weight: 500; }
.session-sheet .session-options > summary::-webkit-details-marker { display: none; }
.map-shell[data-panel="session"] .map-backdrop { opacity: .35; }
.session-sheet .session-review-card { display: grid; gap: 12px; padding: 20px; border: 1px solid #91cae845; border-radius: 20px; background: #0c2843ed; }
.session-review-card h3 { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; margin: 0; font-size: 1.15rem; }
.session-review-card h3 span { color: var(--muted); font-size: .8rem; font-weight: 500; }
.session-review-card > p:not(.session-eyebrow) { color: var(--muted); font-size: .88rem; margin: 0; }
.session-review-play { display: flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 10px 14px; border: 1px solid #5990ab; border-radius: 12px; background: #173e59; color: var(--text); text-decoration: none; font-weight: 750; }
.session-review-play:hover { border-color: var(--teal); }
.session-sheet .session-review-item { display: block; color: var(--text); padding: 12px 0; font-size: .87rem; text-decoration: none; border-top: 1px solid var(--line); }
.session-review-item small { display: block; color: var(--muted); }
.session-sheet .session-change-content, .session-sheet .session-options-content { display: grid; gap: 12px; }
.mission-picker { padding: 0; margin: 0; border: 0; display: grid; gap: 8px; max-height: 320px; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
.mission-picker legend { padding-bottom: 8px; color: var(--muted); font-size: .8rem; }
.session-sheet .mission-choice { display: flex; align-items: center; gap: 12px; cursor: pointer; padding: 13px 12px; border: 1px solid var(--line); border-radius: 12px; background: #0a1c32; }
.mission-choice:has(:checked) { border-color: var(--teal); background: #143a49; }
.mission-choice input { flex: none; width: 18px; height: 18px; accent-color: var(--teal); }
.mission-choice > span { display: grid; gap: 6px; flex: 1; min-width: 0; }
.mission-choice strong { font-size: .88rem; font-weight: 650; line-height: 1.35; }
.mission-choice small { font-size: .74rem; color: var(--muted); }
.mission-choice progress { height: 4px; }
.session-sheet .session-selected { margin: 0; }
.session-selected strong { display: block; color: var(--text); }
.session-sheet [data-entry-start-branch] { color: var(--ink); background: var(--teal); font-weight: 800; border-color: var(--teal); }
.session-sheet .session-personalize summary { font-size: .8rem; }
.session-sheet .game-entry-general { padding: 0; background: none; border: 0; }
.session-sheet .game-entry-general .adaptive-session-actions { display: grid; gap: 8px; }
.session-sheet .game-entry-general button { margin: 0; }
.session-sheet .session-other-proposal { display: grid; gap: 12px; }
.session-sheet .session-other-proposal h3 { font-size: 1.1rem; text-transform: none; }
.session-sheet .session-other-proposal [data-entry-start-recommended] { background: #193d65; color: var(--text); }
.session-sheet .session-other-proposal .session-block-progress { display: none; }
.session-sheet .learning-coach-card { padding: 0; background: none; border: 0; }
.session-sheet .learning-coach-card header { margin-bottom: 10px; }
.session-sheet .learning-coach-card header h2 { font-size: 1.1rem; }
.session-sheet .learning-coach-card header p { font-size: .75rem; text-transform: none; }
.session-sheet .learning-coach-card > strong { font-size: .87rem; font-weight: 400; line-height: 1.5; }
.session-sheet .learning-coach-card li { font-size: .84rem; line-height: 1.5; }
.session-sheet .game-entry-diagnostics { margin-top: 6px; }
.session-sheet .game-entry-diagnostics summary { font-size: .75rem; }
.session-sheet :is(button, a, select, input, summary):focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
.session-sheet [data-entry-action-status] { grid-column: 1/-1; }
.session-sheet-content > :is(.onboarding-tip, .installation-offer) { margin-top: 16px; }
@media (min-width: 900px) {
  .session-sheet { margin-top: 40px; }
  .session-sheet .session-hub { align-items: start; gap: 16px; }
  .session-sheet .session-hero { padding: 32px; gap: 24px; }
  .session-sheet .session-hero > div { gap: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .session-sheet * { animation: none !important; transition: none !important; }
  .session-block-progress progress::-webkit-progress-value { animation: none !important; transition: none !important; }
  .session-block-progress progress::-moz-progress-bar { animation: none !important; transition: none !important; }
}