/* ============================================================
   Twenty Read — стили приложения
   Визуальный язык повторяет лендинг:
   - чистый белый/светло-серый фон
   - глубокие чёрные карточки с большими радиусами
   - акценты: зелёный (цель), жёлтый (короткая сессия),
             фиолетовый (сегодня)
   - крупная типографика с минусовым tracking
   - скевоморф-корешки книг
   ============================================================ */

/* ---------- Шрифт ---------- */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ---------- Переменные ---------- */

:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text",
               "Helvetica Neue", Arial, sans-serif;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 28px;
  --radius-2xl: 32px;

  --tr-fast: 150ms ease;
  --tr-med: 280ms cubic-bezier(0.16, 1, 0.3, 1);
  --tr-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);

  /* СВЕТЛАЯ ТЕМА (как на лендинге) */
  --bg:           #f5f5f7;
  --bg-elev:      #ffffff;
  --bg-elev-2:    #efeff2;
  --text:         #0a0a0c;
  --text-soft:    #1d1d1f;
  --text-muted:   #86868b;
  --text-subtle:  #a8a8ae;
  --border:       #e5e5ea;
  --border-strong:#d2d2d7;

  /* Тёмная карточка / контраст */
  --dark:         #0a0a0c;
  --dark-elev:    #1c1c1f;
  --dark-elev-2:  #2a2a2e;
  --on-dark:      #ffffff;
  --on-dark-soft: rgba(255,255,255,0.72);
  --on-dark-mute: rgba(255,255,255,0.5);

  /* Акценты */
  --green:        #3ecf6f;
  --green-soft:   rgba(62, 207, 111, 0.16);
  --yellow:       #f5c842;
  --yellow-soft:  rgba(245, 200, 66, 0.18);
  --violet:       #5b3df5;
  --violet-soft:  rgba(91, 61, 245, 0.14);
  --red:          #e0464a;

  /* Тени */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.04);
  --shadow-md:  0 6px 20px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 22px 60px rgba(0,0,0,0.10), 0 4px 14px rgba(0,0,0,0.04);
  --shadow-card-dark: 0 20px 50px rgba(0,0,0,0.18), 0 8px 16px rgba(0,0,0,0.10);
}

/* ТЁМНАЯ ТЕМА (по системе) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:           #0a0a0c;
    --bg-elev:      #1a1a1d;
    --bg-elev-2:    #25252a;
    --text:         #ffffff;
    --text-soft:    #ececef;
    --text-muted:   #8e8e93;
    --text-subtle:  #636368;
    --border:       #2a2a2e;
    --border-strong:#3a3a3f;

    --dark:         #f5f5f7;
    --dark-elev:    #ffffff;
    --dark-elev-2:  #e5e5ea;
    --on-dark:      #0a0a0c;
    --on-dark-soft: rgba(0,0,0,0.7);
    --on-dark-mute: rgba(0,0,0,0.5);

    --shadow-sm:  0 2px 8px rgba(0,0,0,0.35);
    --shadow-md:  0 6px 20px rgba(0,0,0,0.4);
    --shadow-lg:  0 22px 60px rgba(0,0,0,0.5);
    --shadow-card-dark: 0 8px 28px rgba(0,0,0,0.5);
  }
}

/* Принудительная тёмная */
:root[data-theme="dark"] {
  --bg:           #0a0a0c;
  --bg-elev:      #1a1a1d;
  --bg-elev-2:    #25252a;
  --text:         #ffffff;
  --text-soft:    #ececef;
  --text-muted:   #8e8e93;
  --text-subtle:  #636368;
  --border:       #2a2a2e;
  --border-strong:#3a3a3f;
  --dark:         #f5f5f7;
  --dark-elev:    #ffffff;
  --dark-elev-2:  #e5e5ea;
  --on-dark:      #0a0a0c;
  --on-dark-soft: rgba(0,0,0,0.7);
  --on-dark-mute: rgba(0,0,0,0.5);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.35);
  --shadow-md:  0 6px 20px rgba(0,0,0,0.4);
  --shadow-lg:  0 22px 60px rgba(0,0,0,0.5);
  --shadow-card-dark: 0 8px 28px rgba(0,0,0,0.5);
}

/* ---------- Сброс ---------- */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior-y: none;
  text-rendering: optimizeLegibility;
}
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

/* ---------- Контейнер ---------- */

#app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(78px + env(safe-area-inset-bottom));
  padding-top: env(safe-area-inset-top);
}

.screens { flex: 1; padding: 12px 20px 24px; max-width: 720px; width: 100%; margin: 0 auto; }
.screen { display: none; animation: fadeIn .3s ease; }
.screen--active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- Шапка экрана ---------- */

.screen-header { padding: 8px 0 24px; }

.screen-header__label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.screen-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.screen-header__title {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
  color: var(--text);
}

/* ---------- Иконочная кнопка (в шапке) ---------- */

.icon-btn {
  background: var(--dark);
  color: var(--on-dark);
  border: 0;
  width: 44px;
  height: 44px;
  border-radius: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--tr-fast);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.icon-btn:active { transform: scale(0.94); }

/* ============================================================
   ОБЛОЖКИ КНИГ (скевоморф-корешки)
   Цвет задаётся переменными --cover-base через JS (auto-hash)
   ============================================================ */

.book-cover {
  position: relative;
  border-radius: 6px;
  background:
    linear-gradient(135deg,
      var(--cover-base, #1a1a1d) 0%,
      color-mix(in srgb, var(--cover-base, #1a1a1d) 70%, #000) 100%);
  box-shadow:
    inset -1px -2px 4px rgba(0,0,0,0.4),
    inset 2px 2px 2px rgba(255,255,255,0.07),
    0 4px 14px rgba(0,0,0,0.18),
    0 1px 2px rgba(0,0,0,0.1);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  padding: 10px 8px;
  color: rgba(255,255,255,0.95);
}

/* Блик слева — иллюзия корешка */
.book-cover::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 6px;
  background: linear-gradient(90deg,
    rgba(0,0,0,0.45) 0%,
    rgba(255,255,255,0.04) 50%,
    rgba(0,0,0,0) 100%);
}

/* Длинный блик-полоска по диагонали */
.book-cover__shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg,
    transparent 0%,
    transparent 40%,
    rgba(255,255,255,0.06) 50%,
    transparent 60%,
    transparent 100%);
  pointer-events: none;
}

.book-cover__title {
  font-size: 9px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.005em;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
  word-break: break-word;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  position: relative;
  z-index: 1;
}

/* Размеры обложек */
.book-cover--xs { width: 32px; height: 44px; padding: 4px; }
.book-cover--xs .book-cover__title { font-size: 6px; -webkit-line-clamp: 3; }

.book-cover--sm { width: 60px; height: 82px; padding: 8px 6px; }
.book-cover--sm .book-cover__title { font-size: 8px; -webkit-line-clamp: 4; }

.book-cover--md { width: 84px; height: 116px; padding: 10px 8px; }
.book-cover--md .book-cover__title { font-size: 10px; -webkit-line-clamp: 5; }

.book-cover--lg { width: 120px; height: 168px; padding: 14px 12px; }
.book-cover--lg .book-cover__title { font-size: 13px; -webkit-line-clamp: 6; }

/* Пустой слот (пунктир) */
.book-cover--empty {
  background: var(--bg-elev);
  box-shadow: none;
  border: 2px dashed var(--border-strong);
  color: var(--text-muted);
  align-items: center;
  justify-content: center;
  font-size: 28px;
  padding: 0;
}
.book-cover--empty::before { display: none; }

/* ============================================================
   ЭКРАН: СЕГОДНЯ
   ============================================================ */

/* Большая чёрная карточка "Сейчас читаю" */
.now-card {
  background: var(--dark);
  color: var(--on-dark);
  border-radius: var(--radius-2xl);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-card-dark);
  position: relative;
  overflow: hidden;
}

.now-card__label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-dark-mute);
  margin-bottom: 10px;
}

.now-card__title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 6px;
  color: var(--on-dark);
}

.now-card__author {
  font-size: 15px;
  color: var(--on-dark-soft);
  margin: 0 0 22px;
}

.now-card__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.now-card__stat {
  background: var(--dark-elev);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.now-card__stat-label {
  font-size: 12px;
  color: var(--on-dark-mute);
  margin-bottom: 4px;
  font-weight: 500;
}

.now-card__stat-value {
  font-size: 17px;
  font-weight: 700;
  color: var(--on-dark);
  letter-spacing: -0.01em;
}

/* Цель на сегодня — белая карточка */
.goal-card {
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  padding: 24px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}

.goal-card__label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--text);
  margin-bottom: 12px;
}

.goal-card__big {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 18px;
  color: var(--text);
}

.goal-card__big--muted { color: var(--text-muted); }
.goal-card__big--done  { color: var(--green); }

.goal-card__bar {
  height: 8px;
  background: var(--bg-elev-2);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 16px;
}

.goal-card__bar-fill {
  height: 100%;
  background: var(--text);
  border-radius: 4px;
  transition: width var(--tr-med);
}

.goal-card__bar-fill--done { background: var(--green); }

/* Кнопка запуска таймера */
.btn-start {
  background: var(--dark);
  color: var(--on-dark);
  border: 0;
  border-radius: 18px;
  padding: 18px 28px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: transform var(--tr-fast);
  box-shadow: var(--shadow-md);
}
.btn-start:active { transform: scale(0.98); }
.btn-start svg { width: 18px; height: 18px; }

/* Полоска streak + ссылка "вне приложения" */
.today-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.today-row .pill, .today-row .btn-soft {
  flex: 1;
}

/* Streak (пилюля) */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elev);
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.pill__icon { font-size: 16px; }
.pill__value { color: var(--text); font-weight: 800; }
.pill__sub { color: var(--text-muted); font-weight: 500; }

/* Мягкая кнопка */
.btn-soft {
  background: var(--bg-elev);
  color: var(--text);
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--tr-fast);
}
.btn-soft:active { transform: scale(0.97); }

/* Цитата дня */
.quote {
  margin-top: 22px;
  padding: 18px 22px;
  border-left: 3px solid var(--border-strong);
  font-size: 15px;
  font-style: italic;
  color: var(--text-muted);
  line-height: 1.5;
}
.quote__author {
  display: block;
  margin-top: 6px;
  font-style: normal;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-subtle);
}

/* Пустое состояние */
.empty {
  text-align: center;
  padding: 60px 24px 40px;
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
}

.empty__art {
  width: 90px;
  height: 120px;
  margin: 0 auto 24px;
  position: relative;
}
.empty__art .book-cover {
  width: 80px; height: 112px;
  position: absolute;
  left: 50%; top: 0;
  transform: translateX(-50%) rotate(-4deg);
  --cover-base: #3a3a3f;
}
.empty__art .book-cover:nth-child(2) {
  transform: translateX(-30%) rotate(5deg);
  --cover-base: #5b3df5;
  opacity: 0.55;
}

.empty__title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  color: var(--text);
}

.empty__text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 auto 24px;
  max-width: 320px;
}

/* ============================================================
   ЭКРАН: БИБЛИОТЕКА
   ============================================================ */

.section-label {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 28px 0 14px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.section-label:first-child { margin-top: 0; }
.section-label__sub {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: lowercase;
  letter-spacing: 0;
}

/* Текущая книга — большая карточка */
.current-book-card {
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  padding: 18px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform var(--tr-fast);
}
.current-book-card:active { transform: scale(0.99); }

.current-book-card__main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.current-book-card__title {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 4px;
  color: var(--text);
}

.current-book-card__author {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.current-book-card__progress {
  margin-top: auto;
}

.current-book-card__progress-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.current-book-card__progress-row strong {
  color: var(--text);
  font-weight: 700;
}

.current-book-card__bar {
  height: 6px;
  background: var(--bg-elev-2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}
.current-book-card__bar-fill {
  height: 100%;
  background: var(--text);
  border-radius: 3px;
  transition: width var(--tr-med);
}

.current-book-card__chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.mini-chip {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  background: var(--bg-elev-2);
  color: var(--text-soft);
  border-radius: 8px;
}
.mini-chip--accent {
  background: var(--text);
  color: var(--bg-elev);
}

/* Полка с книгами в очереди */
.shelf {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.shelf-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform var(--tr-fast);
}
.shelf-item:active { transform: translateY(2px); }

.shelf-item__cover-wrap {
  margin-bottom: 10px;
  display: flex;
  justify-content: center;
}

.shelf-item__title {
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  line-height: 1.2;
  margin: 0 0 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-width: 100%;
}

.shelf-item__author {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
}

/* "Прочитано" — компактный список */
.finished-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.finished-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--bg-elev);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--tr-fast);
}
.finished-item:active { background: var(--bg-elev-2); }

.finished-item__main { flex: 1; min-width: 0; }
.finished-item__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.finished-item__meta {
  font-size: 12px;
  color: var(--text-muted);
}

.finished-item__check {
  width: 24px; height: 24px;
  border-radius: 12px;
  background: var(--green);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}

/* ============================================================
   ЭКРАН: КАЛЕНДАРЬ
   ============================================================ */

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.calendar-nav__btn {
  background: var(--bg-elev);
  border: 0;
  border-radius: 14px;
  width: 40px;
  height: 40px;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  font-size: 18px;
  transition: transform var(--tr-fast);
}
.calendar-nav__btn:active { transform: scale(0.94); }

.calendar-nav__title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.calendar-card {
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  padding: 18px 14px 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  padding: 0 4px 10px;
}

.calendar-weekday {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  padding: 0 4px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  border-radius: 50%;
  position: relative;
  color: var(--text-subtle);
  border: 1.5px solid transparent;
  transition: transform var(--tr-fast);
  cursor: default;
}

.calendar-day--empty { visibility: hidden; }
.calendar-day--future { color: var(--text-subtle); }

.calendar-day--read-short {
  background: var(--yellow);
  color: #0a0a0c;
  cursor: pointer;
}
.calendar-day--read-goal {
  background: var(--green);
  color: #ffffff;
  cursor: pointer;
}
.calendar-day--finished {
  background: var(--green);
  color: #ffffff;
  cursor: pointer;
  box-shadow: 0 0 0 2px rgba(62,207,111,0.25);
}
.calendar-day--finished::after {
  content: "✓";
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 14px;
  height: 14px;
  background: #0a0a0c;
  color: #fff;
  border-radius: 50%;
  font-size: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.calendar-day--today {
  background: var(--violet);
  color: #ffffff;
  cursor: pointer;
}

.calendar-day--clickable:active { transform: scale(0.92); }

/* Статистика */
.stats-card {
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  padding: 6px 18px;
  box-shadow: var(--shadow-sm);
}

.stats-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.stats-row:last-child { border-bottom: 0; }

.stats-row__label {
  font-size: 14px;
  color: var(--text-soft);
}

.stats-row__value {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* Легенда */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 16px;
  padding: 0 4px;
  font-size: 12px;
  color: var(--text-muted);
}
.legend__item { display: flex; align-items: center; gap: 6px; }
.legend__dot {
  width: 12px; height: 12px; border-radius: 50%;
}
.legend__dot--short { background: var(--yellow); }
.legend__dot--goal  { background: var(--green); }
.legend__dot--today { background: var(--violet); }

/* ============================================================
   ЭКРАН: НАСТРОЙКИ
   ============================================================ */

.settings-group {
  background: var(--bg-elev);
  border-radius: var(--radius-2xl);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.settings-row:last-child { border-bottom: 0; }

.settings-row__main { flex: 1; min-width: 0; }

.settings-row__label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.settings-row__hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.4;
}

.settings-row__input {
  background: var(--bg-elev-2);
  border: 0;
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  width: 90px;
  text-align: center;
}

/* Toggle */
.toggle {
  position: relative;
  width: 48px;
  height: 28px;
  background: var(--border-strong);
  border-radius: 14px;
  border: 0;
  padding: 0;
  transition: background var(--tr-fast);
  flex-shrink: 0;
}
.toggle::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--tr-fast);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.toggle--on { background: var(--green); }
.toggle--on::after { transform: translateX(20px); }

/* Сегмент-переключатель */
.segmented {
  display: flex;
  background: var(--bg-elev-2);
  border-radius: 12px;
  padding: 3px;
  position: relative;
}
.segmented input { display: none; }
.segmented__opt {
  flex: 1;
  text-align: center;
  padding: 9px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 9px;
  cursor: pointer;
  transition: all var(--tr-fast);
}
.segmented input:checked + .segmented__opt {
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* Theme switch (3 опции) */
.theme-switch {
  display: flex;
  background: var(--bg-elev-2);
  border-radius: 10px;
  padding: 2px;
}
.theme-switch__opt {
  background: transparent;
  border: 0;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  color: var(--text-muted);
  transition: all var(--tr-fast);
}
.theme-switch__opt--active {
  background: var(--text);
  color: var(--bg-elev);
}

/* Версия внизу */
.app-version {
  text-align: center;
  font-size: 11px;
  color: var(--text-subtle);
  margin: 28px 0 12px;
  letter-spacing: 0.04em;
}

/* ============================================================
   НИЖНЯЯ НАВИГАЦИЯ
   ============================================================ */

.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  padding: 8px 4px calc(8px + env(safe-area-inset-bottom));
  z-index: 50;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  max-width: 720px;
  margin: 0 auto;
}

.tab {
  background: transparent;
  border: 0;
  padding: 6px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  transition: color var(--tr-fast);
}

.tab__icon { width: 22px; height: 22px; }
.tab__label { font-size: 10px; font-weight: 600; letter-spacing: 0.01em; }

.tab--active { color: var(--text); }

/* ============================================================
   КНОПКИ ОБЩИЕ
   ============================================================ */

.btn {
  border: 0;
  border-radius: 14px;
  padding: 13px 22px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.005em;
  transition: transform var(--tr-fast), opacity var(--tr-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  line-height: 1.2;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn--dark {
  background: var(--dark);
  color: var(--on-dark);
}
.btn--white {
  background: var(--on-dark);
  color: var(--dark);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border-strong);
}
.btn--block { width: 100%; }
.btn--danger-soft {
  background: transparent;
  color: var(--red);
  border: 1.5px solid var(--border);
}

/* ============================================================
   ТАЙМЕР (полноэкранный)
   ============================================================ */

.timer-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--dark);
  color: var(--on-dark);
  display: none;
  align-items: center;
  justify-content: center;
  padding: calc(env(safe-area-inset-top) + 24px) 24px calc(env(safe-area-inset-bottom) + 24px);
}

.timer-screen--open { display: flex; animation: fadeIn .3s ease; }

.timer-screen__inner {
  text-align: center;
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timer-screen__book {
  font-size: 13px;
  color: var(--on-dark-mute);
  margin-bottom: 32px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* Кольцо вокруг таймера */
.timer-ring {
  position: relative;
  width: 280px;
  height: 280px;
  margin-bottom: 28px;
}

.timer-ring__svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-ring__bg {
  fill: none;
  stroke: rgba(255,255,255,0.08);
  stroke-width: 6;
}

.timer-ring__fill {
  fill: none;
  stroke: var(--on-dark);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 628.3; /* 2*PI*100 */
  stroke-dashoffset: 628.3;
  transition: stroke-dashoffset 1s linear, stroke 0.5s ease;
}

.timer-ring__fill--goal {
  stroke: var(--green);
}

.timer-ring__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.timer-ring__icon {
  font-size: 36px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.timer-ring__time {
  font-size: 56px;
  font-weight: 200;
  letter-spacing: -0.04em;
  color: var(--on-dark);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 6px;
}

.timer-ring__status {
  font-size: 12px;
  color: var(--on-dark-mute);
  font-weight: 500;
}
.timer-ring__status--goal {
  color: var(--green);
  font-weight: 600;
}

/* Подсказка под таймером */
.timer-screen__hint {
  font-size: 14px;
  color: var(--on-dark-soft);
  line-height: 1.55;
  margin-bottom: 28px;
  padding: 16px 20px;
  background: var(--dark-elev);
  border-radius: var(--radius-md);
  max-width: 360px;
}

.timer-screen__hint--goal {
  background: var(--green-soft);
  color: var(--on-dark);
}

/* ============================================================
   МОДАЛКИ
   ============================================================ */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  align-items: flex-end;
  justify-content: center;
}
.modal--open { display: flex; }

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn .25s ease;
}

.modal__panel {
  position: relative;
  background: var(--bg-elev);
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  padding-bottom: env(safe-area-inset-bottom);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: slideUp .35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.modal__handle {
  width: 38px;
  height: 4px;
  background: var(--border-strong);
  border-radius: 2px;
  margin: 10px auto 0;
}

.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px 8px;
}

.modal__title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

.modal__close {
  background: var(--bg-elev-2);
  border: 0;
  width: 34px;
  height: 34px;
  border-radius: 17px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--tr-fast);
}
.modal__close:active { transform: scale(0.92); }

.modal__body {
  padding: 8px 22px 20px;
  overflow-y: auto;
}

.modal__foot {
  display: flex;
  gap: 10px;
  padding: 14px 22px calc(20px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
}
.modal__foot .btn { flex: 1; }

/* Превью обложки в модалке добавления книги */
.add-book-preview {
  display: flex;
  justify-content: center;
  margin: 4px 0 22px;
}

/* ============================================================
   ФОРМЫ
   ============================================================ */

.field { display: block; margin-bottom: 16px; }
.field--half { margin-bottom: 0; }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 8px;
}

.field__label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.field__input {
  width: 100%;
  background: var(--bg-elev-2);
  border: 1.5px solid transparent;
  border-radius: 12px;
  padding: 13px 14px;
  font-size: 15px;
  color: var(--text);
  transition: border var(--tr-fast), background var(--tr-fast);
  font-weight: 500;
}
.field__input:focus {
  outline: 0;
  border-color: var(--text);
  background: var(--bg-elev);
}

.hint {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 0 16px;
}
.hint--small { font-size: 12px; margin-top: -8px; margin-bottom: 18px; }

.chip-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}
.chip {
  background: var(--bg-elev-2);
  border: 0;
  border-radius: 12px;
  padding: 12px 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  transition: background var(--tr-fast), transform var(--tr-fast);
}
.chip:active { transform: scale(0.96); }
.chip--active { background: var(--text); color: var(--bg-elev); }

/* ============================================================
   ДЕТАЛЬНАЯ КАРТОЧКА КНИГИ
   ============================================================ */

.bd-header {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
}
.bd-header__main { flex: 1; min-width: 0; padding-top: 8px; }
.bd-header__title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 4px;
  line-height: 1.15;
  color: var(--text);
}
.bd-header__author {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 8px;
}
.bd-header__status {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--bg-elev-2);
  color: var(--text-soft);
}
.bd-header__status--reading { background: var(--text); color: var(--bg-elev); }
.bd-header__status--finished { background: var(--green); color: #fff; }

.bd-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 22px;
}
.bd-stat {
  background: var(--bg-elev-2);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
}
.bd-stat__value {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}
.bd-stat__label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  font-weight: 500;
}

.bd-progress {
  background: var(--bg-elev-2);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 22px;
}
.bd-progress__row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.bd-progress__row strong { color: var(--text); font-weight: 700; }
.bd-progress__bar {
  height: 8px;
  background: var(--bg-elev);
  border-radius: 4px;
  overflow: hidden;
}
.bd-progress__fill {
  height: 100%;
  background: var(--text);
  border-radius: 4px;
  transition: width var(--tr-med);
}

.bd-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.bd-sessions-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 14px 0 10px;
}

.session-list { display: flex; flex-direction: column; gap: 6px; }

.session-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-elev-2);
  border-radius: 10px;
  font-size: 13px;
}
.session-item__date { color: var(--text); font-weight: 500; }
.session-item__duration { color: var(--text); font-weight: 700; }
.session-item__badge {
  display: inline-block;
  margin-left: 8px;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--violet-soft);
  color: var(--violet);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ============================================================
   ТОСТ
   ============================================================ */

.toast {
  position: fixed;
  bottom: calc(94px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--dark);
  color: var(--on-dark);
  padding: 12px 20px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all var(--tr-med);
  z-index: 300;
  box-shadow: var(--shadow-lg);
  max-width: 86%;
  text-align: center;
}
.toast--show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   АДАПТИВ
   ============================================================ */

@media (max-width: 360px) {
  .screen-header__title { font-size: 32px; }
  .now-card__title { font-size: 26px; }
  .timer-ring { width: 240px; height: 240px; }
  .timer-ring__time { font-size: 46px; }
  .shelf { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .book-cover--md { width: 70px; height: 98px; }
}

@media (min-width: 720px) {
  .shelf { grid-template-columns: repeat(4, 1fr); }
}