/* Reference interpretation: Kobra disclosures, useLayouts physical controls,
   Scrolltide narrative steps, Craft feedback. Native CSS and ES modules.
   Layers: section navigation 3, header panels 20, mobile dock 30, dialog top layer. */
:root { --motion-fast: 160ms; --motion-panel: 320ms; --ease-out: cubic-bezier(.2,.75,.25,1); }
:root:not([data-theme="dark"]) { --paper: #f8f9fc; --white: #ffffff; --panel: #eef1f8; --wash: #e9edf7; --line: #cbd2df; --border: #cbd2df; }
.header { min-height: 80px; z-index: 20; }
.header #main-nav { gap: 6px; }
.nav-group { position: relative; }
.nav-group > summary { list-style: none; display: flex; gap: 12px; align-items: center; min-height: 48px; padding: 10px 18px; border-radius: 5px; cursor: pointer; font-size: 15px; }
.nav-group > summary::-webkit-details-marker { display: none; }
.nav-group > summary:hover, .nav-group[open] > summary { background: var(--wash); color: var(--accent); }
.nav-group[data-active] > summary { color: var(--accent); }
.nav-chevron { width: 6px; height: 6px; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); margin-top: -3px; }
.nav-group[open] .nav-chevron { transform: rotate(225deg); margin-top: 3px; }
.nav-panel { position: absolute; top: calc(100% + 12px); left: 0; width: 330px; background: var(--white); border: 1px solid var(--line); border-radius: 7px; padding: 20px; box-shadow: 0 12px 32px #101b3320; }
.nav-group:last-child .nav-panel { left: auto; right: 0; }
.nav-panel > p { color: var(--muted); font-size: 13px; margin: 0 10px 12px; }
.header .nav-panel a { display: flex; justify-content: space-between; gap: 12px; padding: 12px 10px; border-radius: 4px; min-height: 66px; }
.header .nav-panel a:hover { background: var(--specimen); }
.nav-panel strong, .nav-panel small { display: block; }
.nav-panel strong { font-size: 17px; font-weight: 550; }
.nav-panel small { font: 13px/1.5 var(--font-body); margin-top: 2px; }
.nav-panel a > span:last-child { color: var(--accent); align-self: center; }
.header .nav-panel a[aria-current]::after { display: none; }
.root-specimen { overflow: hidden; background: var(--specimen); padding-top: 23px; }
.story-tabs { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); position: relative; isolation: isolate; background: var(--paper); border: 1px solid var(--specimen-line); padding: 3px; border-radius: 6px; margin-top: 22px; }
.story-tabs[hidden] { display: none; }
.story-tabs::before { content: ''; position: absolute; z-index: -1; inset: 3px auto 3px 3px; width: calc((100% - 6px)/3); background: var(--accent); border-radius: 3px; transform: translateX(0); }
.story-tabs:has([data-story-tab="1"][aria-selected="true"])::before { transform: translateX(100%); }
.story-tabs:has([data-story-tab="2"][aria-selected="true"])::before { transform: translateX(200%); }
.story-tabs button { border: 0; color: var(--muted); font-size: 14px; background: transparent; border-radius: 3px; min-height: 44px; }
.story-tabs button[aria-selected="true"] { color: var(--paper); }
.story-tabs button:active { translate: none; }
.story-slides { position: relative; }
[data-enhanced] .story-slides { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; overscroll-behavior-x: contain; }
.story-slides::-webkit-scrollbar { display: none; }
.story-panel { min-width: 0; padding: 20px 0 25px; display: flex; align-items: center; flex-direction: column; justify-content: center; text-align: center; }
[data-enhanced] .story-panel { flex: 0 0 100%; scroll-snap-align: start; min-height: 380px; }
.story-panel .specimen-root { font-size: 164px; min-height: 200px; padding: 0 0 26px; line-height: 1.2; }
.story-panel .specimen-name { padding-bottom: 14px; }
.story-caption { color: var(--muted); font-size: 14px; line-height: 1.65; margin: 0 0 12px; }
.story-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; gap: 12px; color: var(--accent); font: 550 14px/1.5 var(--font-body); border: 0; border-radius: 4px; padding: 8px 12px; }
.story-link:hover { background: var(--paper); }
.story-words .specimen-family { width: 100%; gap: 10px; border: 0; padding-block: 24px 32px; }
.story-words .specimen-family::before, .story-words .specimen-branch::before { display: none; }
.story-words .specimen-branch { padding: 18px 4px; min-height: 134px; border: 1px solid var(--specimen-line); background: var(--paper); }
.story-words .specimen-branch .ar { font-size: 40px; line-height: 1.6; padding: 0 0 12px; }
.story-words .specimen-branch > span:last-child { font-size: 12px; }
.story-verse-reference { display: inline-flex; gap: 12px; align-items: center; min-height: 44px; font-size: 13px; color: var(--accent); }
.story-context [data-story-verse] { font-size: clamp(38px,3.8vw,53px); line-height: 1.9; color: var(--accent); margin-bottom: 12px; }
.story-meal { font: 20px/1.55 var(--font-display); max-width: 400px; margin-bottom: 10px; }
.story-context small { font-size: 11px; margin-bottom: 16px; }
.root-specimen figcaption { margin-top: 0; }
.reading-steps a:hover strong { color: var(--accent); }
.word-context-nav { display: grid; grid-template-columns: 44px minmax(0,1fr) 44px; align-items: center; gap: 12px; margin-bottom: 18px; }
.word-context-nav button { min-height: 44px; padding: 8px; font-size: 20px; }
.word-position { font-size: 13px; color: var(--muted); text-align: center; }
.word-position a { display: block; color: var(--accent); font-size: 12px; }
.word-overview { background: var(--specimen); border: 1px solid var(--specimen-line); border-radius: 6px; padding: 20px; text-align: center; margin-bottom: 24px; }
.word-overview h2.ar { font-size: 60px; line-height: 1.7; }
.word-overview .entry-gloss { font: 26px/1.5 var(--font-display); margin: 2px 0 6px; }
.word-overview .fine { margin: 0; }
.word-panel-actions { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 20px; margin-top: 20px; border-top: 1px solid var(--line); }
.word-panel-actions > :is(a,button) { flex: 1 1 auto; }
button[data-save-state="saved"] { background: var(--specimen); border-color: var(--accent); color: var(--accent); }
.loading-orbit, [data-search-page][aria-busy="true"] [data-search-status]::before { display: inline-block; content: ''; width: 15px; height: 15px; border: 1.5px solid var(--line); border-top-color: var(--accent); border-radius: 50%; margin-right: 9px; vertical-align: -2px; }
@media (prefers-reduced-motion:no-preference) {
 .story-tabs::before { transition: transform var(--motion-panel) var(--ease-out); }
 .nav-panel { animation: panel-arrive var(--motion-fast) var(--ease-out); }
 .nav-chevron { transition: transform var(--motion-fast) var(--ease-out); }
 dialog[open][data-word-dialog] { animation: sheet-arrive var(--motion-panel) var(--ease-out); }
 button[data-save-state="saved"] { animation: save-confirm var(--motion-panel) var(--ease-out); }
 .loading-orbit, [data-search-page][aria-busy="true"] [data-search-status]::before { animation: orbit 850ms linear infinite; }
 @keyframes panel-arrive { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: none; } }
 @keyframes sheet-arrive { from { opacity: .3; transform: translateY(18px); } to { opacity: 1; transform: none; } }
 @keyframes save-confirm { 50% { transform: scale(.97); } }
 @keyframes orbit { to { transform: rotate(360deg); } }
}
@media (max-width:960px) {
 .header { min-height: 82px; }
 .header #main-nav { max-height: calc(100dvh - 165px); overflow-y: auto; padding: 14px 20px 22px; box-shadow: 0 12px 32px #101b3320; gap: 12px; }
 .nav-group { border-bottom: 1px solid var(--line); padding-bottom: 10px; }
 .nav-group:last-child { border-bottom: 0; }
 .nav-group > summary { padding: 6px 10px; font: 500 24px/1.4 var(--font-display); justify-content: space-between; color: var(--accent); }
 .nav-panel, .nav-group:last-child .nav-panel { position: static; width: 100%; border: 0; box-shadow: none; padding: 0; background: transparent; }
 .nav-panel > p { display: none; }
 .header .nav-panel a { border: 0; font-size: 16px; min-height: 62px; padding-block: 10px; }
 .header .nav-panel a:last-child { border: 0; }
}
@media (max-width:700px) {
 .story-tabs { margin-top: 18px; }
 [data-enhanced] .story-panel { min-height: 375px; }
 .story-panel .specimen-root { font-size: 150px; }
 .story-words .specimen-family { gap: 5px; }
 .story-words .specimen-branch .ar { font-size: 33px; }
 .story-context [data-story-verse] { font-size: 39px; }
 .story-meal { font-size: 21px; }
 .story-tabs button, .story-link { font-size: 13px; }
 dialog[data-word-dialog] { padding-inline: 22px; border-radius: 20px 20px 0 0; }
 .dialog-top { padding-top: 24px; }
 .dialog-top::before { content: ''; position: absolute; top: 8px; left: calc(50% - 18px); width: 36px; height: 3px; background: var(--line); border-radius: 2px; }
 .word-overview { padding: 12px 16px 20px; }
 .word-overview h2.ar { font-size: 56px; }
 .word-panel-actions { position: sticky; bottom: calc(-1 * max(24px,env(safe-area-inset-bottom))); background: var(--paper); margin-inline: -22px; padding: 14px 22px max(18px,env(safe-area-inset-bottom)); }
}

/* Source-grounded discovery controls; the shuffled deck advances only on request. */
.story-words .specimen-family { grid-template-columns: repeat(var(--story-branches,3),minmax(0,1fr)); }
.root-specimen figcaption:has(.story-next:not([hidden])) { flex-wrap: wrap; gap: 4px 12px; }
.root-specimen figcaption:has(.story-next:not([hidden])) > [data-story-stats] { flex-basis: 100%; }
.story-next { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-width: 104px; min-height: 44px; padding: 8px 12px; font-size: 13px; color: var(--accent); border-color: var(--specimen-line); background: var(--paper); }
.story-next[hidden] { display: none; }
.story-next:hover { background: var(--wash); }
.story-panel .specimen-root[data-letters="4"] { font-size: 138px; }
@media(max-width:760px) {
 .story-panel .specimen-root { font-size: clamp(104px,35vw,150px); }
 .story-panel .specimen-root[data-letters="4"] { font-size: 108px; }
 .story-words .specimen-family { grid-template-columns: 1fr; gap: 8px; padding-block: 14px 20px; }
 .story-words .specimen-branch { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 72px; padding: 8px 14px; }
 .story-words .specimen-branch .ar { font-size: 34px; padding: 0; }
 .story-words .specimen-branch > span:last-child { flex-shrink: 0; }
}