/* Mutolaa ko'rinishi — «Aa» paneli, ko'rsatma pufakchasi va fon almashuvi.
 *
 * Mavzu o'quvchisi, toifa javobi va sinov testi uchun umumiy. Mantiq —
 * `js/reading-view.js`, rang to'plamlari — `tokens.css`
 * (`data-lesson-theme`). Bu faylda rang yozilmaydi.
 */

/* Toifa javobi o'quvchisidagi yuqori qator: yo'l chapda, «Aa» o'ngda —
   mavzu o'quvchisidagi `.lesson-bar` bilan bir xil. */
.reading-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; }
.malaka-view-bar [data-view-toggle] { margin-left: auto; align-self: center; }

/* ─── Ko'rinish paneli ─────────────────────────────────────────────────
   Suzuvchi oyna: «Aa» tugmasining ostida, sahifa oqimidan tashqarida.
   Ilgari u oqim ichida edi va ochilganda butun matnni pastga surib
   yuborardi — o'qilayotgan satr joyidan sakrardi, yopilganda yana
   qaytardi. Endi sahifa qimirlamaydi.

   Joyi `js/reading-view.js` da hisoblanadi (tugma ostida, ekran chetidan
   chiqmaydi). DOM dagi o'rni o'zgarmadi: panel baribir «Aa» qatoridan
   keyin turadi, ya'ni Tab bilan yurish tartibi tabiiy qoladi. */
.lesson-type-panel {
  position: fixed; z-index: 34; top: 0; left: 0;
  /* Tanlov halqasining rangi shu yerda hisoblanadi. Fon tugmasi o'z tema
     atributini ko'taradi, ya'ni uning ichida `--accent` boshqa rang bo'ladi —
     halqa esa panelniki bo'lishi kerak. */
  --view-ring: var(--accent);
  --view-gap: var(--canvas);
  display: grid;
  width: min(380px, calc(100vw - 32px));
  /* Yotgan telefonda ekran past bo‘ladi: panel ekrandan chiqib ketmasin,
     ichida aylantirilsin. Balandlik JS ga ham shu yerdan ko‘rinadi —
     joylashtirish hisobi to‘g‘ri chiqadi. */
  max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px);
  overflow-y: auto; overscroll-behavior: contain;
  padding: 6px 16px 18px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-panel);
  background: var(--canvas); box-shadow: var(--shadow-float);
}
/* Ochilish va yopilish — `js/oyna.js` (spec 2026-09-23 §6). Ilgari bu yerda
   faqat kirish animatsiyasi turardi va panel `hidden = true` bilan darrov
   g'oyib bo'lardi. Endi ikkala tomon ham JS da: CSS animatsiyasi qolsa u
   WAAPI bilan bir vaqtda ishlab, panel ikki marta qimirlardi. */

/* Sarlavha qatori: nomi chapda, o'ngda «asl holat» va yopish belgisi.
   Telefonda panel deyarli butun ekran kengligida ochiladi, shuning uchun
   «tashqariga bosish» dan tashqari ko'rinadigan yopish yo'li ham kerak. */
.view-head { display: flex; align-items: center; gap: 4px; padding-bottom: 6px; border-bottom: 1px solid var(--border-subtle); }
.view-title { margin: 0 auto 0 0; color: var(--text-primary); font-size: 15px; font-weight: 600; letter-spacing: -.01em; }

/* Yorliq tanlov ustida turadi — yonida emas. Tanlov belgi bilan
   ko'rsatiladi (egasi talabi, 2026-09-24): nomi `aria-label` da, ekranda
   esa fonning o'zi, harf o'lchami va qator oralig'i rasmi. Belgi o'z-o'zini
   tushuntiradi, shuning uchun yorliq ham baqirmaydi — kichik va sokin. */
.view-row { display: grid; gap: 10px; padding-top: 16px; }
.view-label { color: var(--text-tertiary); font-size: 13px; font-weight: 500; }

.view-options { display: flex; flex-wrap: wrap; gap: 8px; }
.view-option {
  flex: 1 1 auto; min-height: 44px; padding: 0 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-subtle); border-radius: var(--radius-control);
  background: var(--canvas); color: var(--text-secondary);
  font: inherit; font-size: 14px; font-weight: 500; line-height: 1;
  cursor: pointer;
  transition: border-color 160ms var(--ease-standard), background-color 160ms var(--ease-standard), color 160ms var(--ease-standard), box-shadow 160ms var(--ease-standard);
}
.view-option[aria-pressed="true"] { border-color: var(--view-ring); background: var(--accent-soft); color: var(--accent); }
.view-option[aria-disabled="true"] { color: var(--text-tertiary); opacity: .45; cursor: default; }
@media (hover: hover) and (pointer: fine) { .view-option:not([aria-disabled="true"]):not([aria-pressed="true"]):hover { border-color: var(--border-strong); color: var(--text-primary); } }

/* Fon — beshta doira, har biri o'sha fonning o'zi: tugma o'z to'plamini
   atribut bilan oladi (data-theme / data-reader-theme), ya'ni ichida
   --canvas va --text-primary o'sha fonning rangi. «Aa» — shu fondagi matn.
   Tanlangani panel fonida ajratilgan halqa oladi: halqa rangi va oraliq
   rangi panelda hisoblanadi (tugma ichida --canvas boshqa). */
.view-options-theme { flex-wrap: nowrap; justify-content: space-between; gap: 6px; }
.view-options-theme .view-option { flex: 0 0 48px; width: 48px; height: 48px; padding: 0; border-color: var(--border-strong); border-radius: 999px; background: var(--canvas); color: var(--text-primary); font-size: 15px; font-weight: 600; letter-spacing: -.01em; }
.view-options-theme .view-option[aria-pressed="true"] { background: var(--canvas); border-color: transparent; box-shadow: 0 0 0 2px var(--view-gap), 0 0 0 4px var(--view-ring); }
/* «Sayt» — tizim belgisi: doira sayt temasining foni va matni bilan
   diagonal bo'lingan. Ikkala rang ham shu tugmaning to'plamidan. */
.view-options-theme .view-option[data-view-theme="auto"] { background: linear-gradient(135deg, var(--canvas) 50%, var(--text-primary) 50%); color: transparent; }

/* O'lcham: kichik A · foiz · katta A — bitta yaxlit boshqaruv, ichida
   chiziq yo'q. Chegarada tugma xiralashadi. */
.view-options-size { flex-wrap: nowrap; align-items: center; gap: 0; border: 1px solid var(--border-subtle); border-radius: var(--radius-control); background: var(--canvas-raised); }
.view-options-size .view-option { flex: 0 0 64px; border-color: transparent; background: transparent; color: var(--text-primary); font-weight: 600; }
.view-harf-kichik { font-size: 13px; }
.view-harf-katta { font-size: 21px; }
.view-size-value { flex: 1 1 auto; color: var(--text-secondary); font-size: 13px; text-align: center; font-variant-numeric: tabular-nums; }

/* Qator oralig'i: uchta chiziq — oraliq rasmning o'zida ko'rinadi.
   Chiziqlar fon gradienti bilan chiziladi, SVG kerak emas; oxirgisi
   qisqaroq, matn abzatsining oxiri kabi. */
.view-options-leading { flex-wrap: nowrap; }
.view-options-leading .view-option { flex: 1 1 0; }
.view-qatorlar {
  display: block; width: 22px; height: 12px;
  background:
    linear-gradient(currentColor 0 0) left top / 100% 2px no-repeat,
    linear-gradient(currentColor 0 0) left center / 100% 2px no-repeat,
    linear-gradient(currentColor 0 0) left bottom / 64% 2px no-repeat;
  border-radius: 1px;
}
[data-view-leading="normal"] .view-qatorlar { height: 16px; }
[data-view-leading="loose"] .view-qatorlar { height: 20px; }

/* Ko'rsatma pufakchasi — chat xabari kabi, alohida uchburchaksiz: tugmaga
   qaragan burchak kichik radius bilan «uchi» bo'ladi, qolgan uchtasi panel
   radiusida. Yuza teskari (`--inverse`): har fonda fondan ajralib turadi —
   nisbat foundation testida hisoblanadi. Joyi JS da, tugma ostida. */
.view-hint {
  position: fixed; z-index: 32; top: 0; left: 0;
  width: max-content;
  max-width: min(480px, calc(100vw - 32px));
  padding: 10px 14px;
  border-radius: var(--radius-panel) 4px var(--radius-panel) var(--radius-panel);
  background: var(--inverse); color: var(--text-on-inverse);
  box-shadow: var(--shadow-float);
  font-size: 14px; line-height: 1.45; text-wrap: pretty;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  pointer-events: none;
  transition: opacity 160ms var(--ease-standard), transform 200ms var(--ease-out), visibility 0s linear 200ms;
}
.view-hint[data-open="true"] { opacity: 1; visibility: visible; transform: none; transition: opacity 200ms var(--ease-standard), transform 200ms var(--ease-out), visibility 0s; }
.view-hint-icon { display: inline-flex; vertical-align: -3px; margin: 0 2px; padding: 1px 4px; border-radius: 6px; border: 1px solid currentColor; }
@media (prefers-reduced-motion: reduce) { .view-hint, .view-hint[data-open="true"] { transform: none; transition: none; } }

/* Fon almashuvi sahifa o'tishi emas: ko'tarilish yo'q, joyida crossfade.
   Tur `mavzu.js` dagi `startViewTransition({ types: ['fon'] })` dan. */
@keyframes view-fade-in { from { opacity: 0; } }
:root:active-view-transition-type(fon) ::view-transition-old(root),
:root:active-view-transition-type(fon) ::view-transition-old(site-header),
:root:active-view-transition-type(fon) ::view-transition-old(bottom-nav) {
  animation: page-fade-out 240ms var(--ease-standard) both;
}
:root:active-view-transition-type(fon) ::view-transition-new(root),
:root:active-view-transition-type(fon) ::view-transition-new(site-header),
:root:active-view-transition-type(fon) ::view-transition-new(bottom-nav) {
  animation: view-fade-in 240ms var(--ease-standard) both;
}
/* «Asl holat» — sarlavhadagi belgi. Hech narsa o'zgartirilmagan bo'lsa
   ko'rinmaydi: bosilsa hech narsa bo'lmaydigan tugma ekranda turmaydi. */
.view-reset { transition: opacity 160ms var(--ease-standard), visibility 0s; }
.view-reset[aria-disabled="true"] { opacity: 0; visibility: hidden; transition: opacity 160ms var(--ease-standard), visibility 0s linear 160ms; }

/* ─── Mundarija paneli ────────────────────────────────────────────────── */

.toc-backdrop { position: fixed; inset: 0; z-index: 35; display: grid; place-items: end center; background: var(--backdrop); }
.toc-panel { width: min(520px, calc(100% - 32px)); max-height: min(70vh, 640px); margin-bottom: max(88px, calc(env(safe-area-inset-bottom) + 88px)); padding: 8px 20px 16px; border: 1px solid var(--border-strong); border-radius: var(--radius-panel); background: var(--canvas); box-shadow: var(--shadow-float); overflow-y: auto; }
.toc-head { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; min-height: 52px; background: var(--canvas); font-size: 15px; }
.toc-list { margin: 0; padding: 0 0 4px 0; list-style: none; counter-reset: toc; }
.lesson-toc-link { display: grid; grid-template-columns: 2.2em minmax(0, 1fr); gap: 8px; align-items: baseline; min-height: 44px; padding: 10px 0; border-top: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: 14px; line-height: 1.4; text-decoration: none; }
.toc-list li:first-child .lesson-toc-link { border-top: 0; }
.lesson-toc-link::before { counter-increment: toc; content: counter(toc, decimal-leading-zero); font-family: var(--font-mono); font-size: 12px; color: var(--text-tertiary); }
.lesson-toc-link[aria-current="true"] { color: var(--accent); }
@media (hover: hover) and (pointer: fine) { .lesson-toc-link:hover { color: var(--text-primary); } }
/* Mundarija ro'yxati siqiq — fokus halqasi qator ichida qolsin. */
.lesson-toc-link:focus-visible { outline-offset: -2px; }

/* Toifa savollari mundarijasi: raqam — savolning o'z tartib raqami (counter
   emas), matn ikki qatorda qirqiladi. */
.toifa-toc-link { display: grid; grid-template-columns: 2.2em minmax(0, 1fr); gap: 8px; align-items: baseline; min-height: 44px; padding: 10px 0; border-top: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: 14px; line-height: 1.4; text-decoration: none; }
.toc-list li:first-child .toifa-toc-link { border-top: 0; }
.toifa-toc-position { font-family: var(--font-mono); font-size: 12px; color: var(--text-tertiary); }
.toifa-toc-text { overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.toifa-toc-link[aria-current="true"] { color: var(--accent); }
.toifa-toc-link[aria-current="true"] .toifa-toc-position { color: var(--accent); }
@media (hover: hover) and (pointer: fine) { .toifa-toc-link:hover { color: var(--text-primary); } }
.toifa-toc-link:focus-visible { outline-offset: -2px; }
/* Suzuvchi panel oxirgi amallarni yopib qo'ymasin. */
section[data-malaka-view="reader"] { padding-bottom: 104px; }

/* Telefonda panel ekran kengligiga yaqinlashadi, qatorlar esa ish stolidagidek
   qoladi: yorliq tepada, tugma nomi tugmaning ichida. */
@media (max-width: 900px) {
  .toc-panel { max-height: 62vh; }
  .lesson-type-panel { padding: 6px 14px 16px; }
}

/* ─── Atama belgisi va oynasi ──────────────────────────────────────────────
   Spec: docs/superpowers/specs/2026-09-23-atama-oynasi-va-yumshoq-yopilish-design.md §5

   Belgi matn rangida qoladi va faqat nuqtali tagchiziq oladi. Ko'k EMAS:
   matnda allaqachon ikkita ko'k belgi bor — iqtibos `[3]` va mavzu havolasi.
   Uchalasi bir xil ko'rinsa o'quvchi qaysi biri qayerga olib borishini
   bilmaydi. Nuqtali chiziq esa «bu yerda izoh bor» degan eski, o'qilgan
   belgi hisoblanadi.

   O'lchangan zichlik: 54 belgi/mavzu, ya'ni ekranga ~2 ta. Shuning uchun
   belgi fon rangi yoki ramka olmaydi — u matn oqimini buzmasligi kerak. */
.lesson-atama {
  margin: 0; padding: 0; border: 0; background: none; color: inherit;
  font: inherit; text-align: inherit; cursor: pointer;
  text-decoration: underline dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
  text-decoration-color: var(--text-tertiary);
  border-radius: 3px;
}
.lesson-atama:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.lesson-atama[aria-expanded="true"] { text-decoration-color: var(--accent); color: var(--accent); }
@media (hover: hover) and (pointer: fine) {
  .lesson-atama:hover { text-decoration-color: var(--accent); }
}

/* Oyna hujjat oqimidan TASHQARIDA: matn undan qimirlamaydi va o'quvchi
   aylantirish joyini yo'qotmaydi — butun g'oyaning o'zi shu. */
.atama-oyna {
  position: fixed; z-index: 45; top: 0; left: 0;
  width: min(360px, calc(100vw - 32px));
  padding: 12px 16px 14px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-panel);
  background: var(--canvas); color: var(--text-primary);
  box-shadow: var(--shadow-float);
}
.atama-oyna[hidden] { display: none; }
.atama-oyna-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.atama-oyna-title { margin: 0; font-size: 16px; font-weight: 550; letter-spacing: -.01em; line-height: 1.3; }
.atama-oyna-title:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; border-radius: 4px; }
.atama-oyna-original { margin: 2px 0 0; color: var(--text-tertiary); font-size: 12.5px; font-style: italic; }
.atama-oyna-text { margin: 8px 0 0; font-size: 14.5px; line-height: 1.55; color: var(--text-body); }
.atama-oyna-status { margin: 8px 0 0; font-size: 14px; color: var(--text-secondary); }
/* Pastki qator: ta'rif qaysi mavzudan kelgani va to'liq yozuvga havola. */
.atama-oyna-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin: 12px 0 0; padding-top: 10px; border-top: 1px solid var(--border-subtle);
  font-size: 13px;
}
.atama-oyna-manba { color: var(--text-tertiary); font-family: var(--font-mono); }

/* Telefonda — pastdan chiqadigan varaq: barmoq uchun kattaroq nishon va
   ekran chetiga yopishmaydigan matn (kitob o'quvchisidagi naqsh). */
@media (max-width: 600px) {
  .atama-oyna {
    top: auto; bottom: 0; left: 0; right: 0;
    width: 100%; max-height: 70vh; overflow-y: auto;
    padding: 14px 20px max(20px, env(safe-area-inset-bottom));
    border-width: 1px 0 0; border-radius: var(--radius-panel) var(--radius-panel) 0 0;
  }
}