/* ============================================================
   КАР-точки — 1b iOS-минимализм · терракота · Baloo 2 + Nunito
   Экраны подключаются параллельными <link> в index.html (не через @import).
   ============================================================ */

:root {
  /* 1b iOS-минимализм: светлее фон, белые карточки, глубина тенями */
  --bg: #FBFAF7;
  --bg-raised: #FFFFFF;
  --bg-sunken: #F1EBE1;
  --paper-deep: #EBE2D6;
  --ink: #1C1611;
  --ink-soft: #6E6052;
  --ink-faint: #857260;
  --ink-muted: #A08D77; /* подписи / вторичные метки */
  --ink-muted-soft: #B9AB98;
  --line: #DDD2C4;
  --accent: #C45528;
  --accent-bright: #E06F38;
  --accent-soft: #FAEBE0;
  --terra-deep: #8F3D18;
  --accent-text: #B04A1F;
  --danger: #E06D64;
  --danger-soft: #FBE4E1;
  --danger-text: #A63A32;
  --ok: #4A8F5D;
  --ok-soft: #E0F0E5;
  --ok-text: #3E7A4F;
  --btn-ink: #fff;
  --hl-sky: #E3EEF8;
  --shadow: 0 2px 10px rgba(44,34,25,.06), 0 16px 40px rgba(44,34,25,.06);
  --shadow-sm: 0 1px 6px rgba(44,34,25,.06);
  --shadow-lg: 0 2px 10px rgba(44,34,25,.07), 0 24px 56px rgba(44,34,25,.1);
  --radius: 24px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --folder-gap: 14px;
  --main-pad-y: 32px;
  --header-h: 67px;
  --sidebar-gutter: 5px;
  --sidebar-scale: 0.9;
  --font-display: 'Baloo 2', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ease: cubic-bezier(.22,.9,.3,1);
  --dur: .28s;

  /* шкала отступов — для консистентности */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px;
  --sp-4: 16px; --sp-5: 24px; --sp-6: 32px;

  /* чипы SRS с нормальным контрастом */
  --chip-bg:     color-mix(in srgb, var(--ink) 7%, var(--bg-raised));
  --chip-ink:    var(--ink-soft);
  --chip-due-bg: color-mix(in srgb, var(--accent) 16%, var(--bg-raised));
  --chip-new-bg: color-mix(in srgb, var(--ok) 16%, var(--bg-raised));

  /* единое кольцо фокуса */
  --focus-ring: 0 0 0 3px var(--accent-soft), 0 0 0 1.5px var(--accent);
}

@media (max-width: 520px) {
  :root {
    --folder-gap: 10px;
    --main-pad-y: 18px;
  }
}

/* Тёмная тема управляется js/lib/theme.js через data-theme (инлайн-скрипт в index.html
   выставляет её до первой отрисовки), поэтому селектор — по атрибуту, а не по media:
   иначе ручной переключатель не работал бы. */
:root[data-theme="dark"] {
    color-scheme: dark; /* нативные скроллбары, инпуты, автозаполнение */
    --bg: #1A1612;
    --bg-raised: #242018;
    --bg-sunken: #14110E;
    --paper-deep: #2E2820;
    --ink: #F3EBE0;
    --ink-soft: #B8AA9A;
    --ink-faint: #948875; /* контраст 4.66 (было #7A6E62 — 3.27) */
    --line: #3A332B;
    --accent: #E07840;
    --accent-bright: #F09058;
    --accent-soft: #3D2A1C;
    --terra-deep: #C45528;
    --accent-text: #F09058;
    --ink-muted: #948875;
    --ink-muted-soft: #7A6E62;
    --danger: #E06D64;
    --danger-soft: #3B2422;
    --danger-text: #E06D64;
    --ok: #6FBB84;
    --ok-soft: #1F3326;
    --ok-text: #6FBB84;
    --btn-ink: #1A1612;   /* тёмный текст на оранжевом: 5.9 против 3.0 у белого */
    --hl-sky: #263441;
    --shadow: 0 2px 10px rgba(0,0,0,.35), 0 16px 40px rgba(0,0,0,.35);
    --shadow-sm: 0 1px 6px rgba(0,0,0,.3);
    --shadow-lg: 0 2px 10px rgba(0,0,0,.4), 0 24px 56px rgba(0,0,0,.5);
    --chip-bg:     color-mix(in srgb, var(--ink) 8%, var(--bg-raised));
    --chip-due-bg: color-mix(in srgb, var(--accent) 22%, var(--bg-raised));
    --chip-new-bg: color-mix(in srgb, var(--ok) 22%, var(--bg-raised));
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html {
  height: 100%; overflow: hidden;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}
body {
  margin: 0; height: 100%; overflow: hidden;
  background: var(--bg); color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px; line-height: 1.55;
  font-style: normal;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4,
.brand-name, .page-title, .auth-title,
.streak-num, .cal-title,
.review-hero h2, .review-done h2,
.grade-btn, .btn, .nav-btn, .tab-btn,
.modal-title, .folder-card h3 {
  font-family: var(--font-display);
  font-style: normal;
  font-synthesis: none;
  letter-spacing: -.01em;
  text-wrap: balance;
}

button { font: inherit; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }

/* --- заставка при загрузке ------------------------------- */
.boot-splash {
  position: fixed; inset: 0; display: grid; place-items: center;
  color: var(--ink); background: var(--bg); z-index: 50;
  animation: fadeIn .4s var(--ease);
}
.boot-eye { fill: var(--bg); }
.boot-dot { animation: bootPulse 1.1s ease-in-out infinite; }
.boot-dot.d2 { animation-delay: .18s; }
.boot-dot.d3 { animation-delay: .36s; }
@keyframes bootPulse { 0%,100% { opacity: .25; } 40% { opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; } }

/* --- каркас ------------------------------------------------ */
.app { height: 100%; min-height: 100dvh; display: flex; flex-direction: column; }

.header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 6%, transparent);
}
.header-in {
  max-width: 1200px; margin: 0 auto;
  padding: calc(14px + env(safe-area-inset-top, 0px)) 24px 14px;
  display: flex; align-items: center; gap: 10px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 700; font-size: 18px; letter-spacing: -.01em;
  cursor: pointer; user-select: none; border: 0; background: none; padding: 0;
}
.brand-logo {
  width: 34px; height: 34px; flex: none; display: block;
  object-fit: contain;
  transition: transform .5s var(--ease), opacity .7s var(--ease), visibility .7s var(--ease);
}
.brand:hover .brand-logo { transform: rotate(-8deg); }
.brand .kar { color: var(--accent); }
[data-theme="dark"] .brand-logo { filter: brightness(1.25) contrast(1.05); }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav-desktop {
  display: flex; align-items: center; gap: 0;
  background: color-mix(in srgb, var(--ink) 5%, transparent);
  border-radius: 999px; padding: 3px;
}

/* Переключатель светлой / тёмной темы (js/ui/theme-toggle.js) */
.theme-toggle {
  flex: none; position: relative; cursor: pointer; padding: 0;
  width: 58px; height: 30px;
  border: 1.5px solid var(--line); border-radius: 999px;
  background: var(--bg-sunken);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.theme-toggle:hover { border-color: var(--accent); }
.theme-toggle:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.theme-toggle-track {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: space-between; padding: 0 7px;
}
.theme-toggle-icon {
  position: relative; z-index: 1; width: 15px; height: 15px;
  display: grid; place-items: center; color: var(--ink-faint);
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.theme-toggle-icon svg { width: 15px; height: 15px; display: block; }
.theme-toggle-sun { color: var(--accent); }
.theme-toggle-moon { opacity: .55; }
.theme-toggle.is-dark .theme-toggle-sun { color: var(--ink-faint); opacity: .55; }
.theme-toggle.is-dark .theme-toggle-moon { color: var(--accent); opacity: 1; }
.theme-toggle-knob {
  position: absolute; top: 50%; left: 3px; z-index: 0;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-raised); box-shadow: 0 1px 3px rgba(0,0,0,.22);
  transform: translateY(-50%);
  transition: transform .34s cubic-bezier(.34,1.4,.4,1);
}
.theme-toggle.is-dark .theme-toggle-knob { transform: translate(28px, -50%); }
.nav-btn {
  border: 0; background: none; padding: 7px 16px; border-radius: 999px;
  color: var(--ink-soft); font-family: var(--font-body);
  font-weight: 600; font-size: 13.5px; cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  display: flex; align-items: center; gap: 6px;
}
.nav-btn:hover { color: var(--ink); }
.nav-btn.active {
  background: var(--bg-raised); color: var(--ink); font-weight: 700;
  box-shadow: 0 1px 4px rgba(44,34,25,.12);
}
[data-theme="dark"] .nav-btn.active {
  box-shadow: 0 1px 4px rgba(0,0,0,.35);
}
.nav-btn .badge {
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 800;
  border-radius: 999px; padding: 1px 7px; line-height: 1.4;
}
.nav-btn.active .badge { background: var(--accent); color: #fff; }

.main {
  flex: 1; min-height: 0; width: 100%; max-width: 1200px; margin: 0 auto;
  overflow-y: auto; overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  padding: var(--main-pad-y) 24px calc(68px + env(safe-area-inset-bottom));
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* старый Edge */
}
.main::-webkit-scrollbar { display: none; width: 0; height: 0; } /* Chrome, Safari */
@media (min-width: 720px) { .main { padding-bottom: 48px; } }
@media (max-width: 719px) {
  .app--study-session .main {
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
    overflow: hidden;
    overscroll-behavior: none;
  }
  .app--study-session .header {
    display: none;
  }
  .app--study-session {
    --header-h: 0px;
  }
  .app--study-session input,
  .app--study-session textarea {
    scroll-margin: 0;
  }
}

/* переключение экранов */
.view { animation: viewIn .34s var(--ease); }
@keyframes viewIn { from { opacity: 0; transform: translateY(10px); } }

html.motion-ui .view { animation: none; }
html.motion-ui .stagger-in { animation: none; }
html.motion-ui .auth-wrap { animation: none; }

/* --- нижняя навигация (мобильная) -------------------------- */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-around;
  background: color-mix(in srgb, var(--bg-raised) 92%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
  min-height: calc(52px + env(safe-area-inset-bottom, 0px));
  padding: 2px 8px env(safe-area-inset-bottom, 0px);
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease), visibility 0.28s var(--ease);
}
@media (min-width: 720px) { .tabbar { display: none; } }
@media (max-width: 719px) {
  .app--study-session .tabbar {
    transform: translateY(100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .app--study-session .toasts {
    bottom: calc(20px + env(safe-area-inset-bottom));
  }
}
.tab-btn {
  border: 0; background: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  color: var(--ink-soft); font-size: 10px; font-weight: 600;
  min-height: 44px; min-width: 44px;
  padding: 4px 10px 2px; border-radius: 12px; position: relative;
  transition: color var(--dur) var(--ease), transform .18s var(--ease);
}
.tab-btn:active { transform: scale(.92); }
.tab-btn.active { color: var(--ink); }
.tab-btn svg { width: 22px; height: 22px; flex: none; }
.tab-btn .badge {
  position: absolute; top: 0; right: 4px;
  background: var(--accent); color: var(--btn-ink); font-size: 10px; font-weight: 700;
  border-radius: 999px; padding: 0 5px; line-height: 1.5; min-width: 15px;
}
@media (max-width: 719px) { .nav-desktop { display: none; } }

/* --- общие элементы ---------------------------------------- */
.btn {
  border: 0; cursor: pointer; border-radius: var(--radius-sm);
  min-height: 44px; min-width: 44px;
  padding: 11px 18px; font-weight: 600; font-size: 15px;
  background: var(--bg-sunken); color: var(--ink);
  transition: transform .16s var(--ease), background var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), opacity var(--dur);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.btn:hover { background: var(--line); }
.btn:active { transform: scale(.96); }
.btn.primary { background: var(--ink); color: var(--bg); }
.btn.primary:hover { opacity: .85; }
.btn.accent { background: var(--terra-deep); color: var(--btn-ink); }
.btn.accent:hover { opacity: .92; filter: brightness(1.04); }
[data-theme="dark"] .btn.accent { background: var(--accent); }
.btn.ghost { background: transparent; color: var(--ink-soft); }
.btn.ghost:hover { background: var(--bg-sunken); color: var(--ink); }
.btn.secondary {
  background: var(--accent-soft);
  color: var(--terra-deep);
  border: 1.5px solid color-mix(in srgb, var(--accent) 38%, var(--line));
  box-shadow: 0 1px 2px rgba(44, 34, 25, .05);
}
.btn.secondary:hover {
  background: color-mix(in srgb, var(--accent) 12%, var(--accent-soft));
  border-color: color-mix(in srgb, var(--accent) 52%, var(--line));
}
.btn.danger { background: var(--danger); color: var(--btn-ink); }
.btn.danger:hover { opacity: .88; }
.btn.big { padding: 14px 24px; font-size: 16px; border-radius: 14px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .45; pointer-events: none; }
.btn svg { width: 17px; height: 17px; flex: none; pointer-events: none; }

.icon-btn {
  border: 0; background: none; cursor: pointer; padding: 8px;
  min-width: 44px; min-height: 44px;
  border-radius: 10px; color: var(--ink-faint); display: inline-flex;
  align-items: center; justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--dur), color var(--dur), transform .16s var(--ease);
}
.icon-btn:hover { background: var(--bg-sunken); color: var(--ink); }
.icon-btn:active { transform: scale(.9); }
.icon-btn svg { width: 20px; height: 20px; pointer-events: none; }
.icon-btn .app-icon {
  width: 20px; height: 20px; display: block; object-fit: contain;
  pointer-events: none;
}

.input, textarea.input {
  width: 100%; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--bg-sunken); color: var(--ink);
  padding: 12px var(--sp-3); outline: none; font: inherit;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.input:focus { border-color: var(--accent); box-shadow: var(--focus-ring); }
textarea.input { resize: vertical; min-height: 72px; }
.field { margin-bottom: var(--sp-4); }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-soft); margin-bottom: var(--sp-2); }
.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: nowrap;
}
.field-label-row label { margin-bottom: 0; flex: none; }
.field-label-row .rich-toolbar { margin-bottom: 0; }


.page-head { display: flex; align-items: center; gap: 12px; margin: 4px 0 20px; flex-wrap: nowrap; }
.page-head .page-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.page-head .icon-btn.back-btn { z-index: 3; }
.page-title { font-size: clamp(22px, 5.4vw, 26px); font-weight: 800; letter-spacing: -.02em; margin: 0; }
.page-sub { color: var(--ink-soft); margin: -14px 0 20px; font-size: 14.5px; }

/* --- утилиты ----------------------------------------------- */
.text-center { text-align: center; }
.stagger-in { animation-delay: var(--stagger-delay, 0ms); }

/* --- авторизация ------------------------------------------- */
.auth-wrap {
  max-width: 420px; width: 100%;
  margin: max(2vh, env(safe-area-inset-top, 0px)) auto 0;
  padding: 0 4px;
  animation: itemIn .45s var(--ease);
}
.auth-logo {
  display: block;
  width: min(264px, 72vw); height: min(264px, 72vw);
  margin: 0 auto 6px;
  object-fit: contain;
}
.auth-logo.icon-float { animation: iconFloat 3s ease-in-out infinite; }
@keyframes iconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@media (prefers-reduced-motion: reduce) {
  .auth-logo.icon-float { animation: none; }
}
.auth-brand { justify-content: center; margin: 0 auto 4px; cursor: default; }
.auth-brand .brand-logo { width: 48px; height: 48px; }
.auth-brand:hover .brand-logo { transform: none; }
.auth-brand .auth-title { text-align: left; margin: 0; }
.auth-title { text-align: center; font-size: clamp(24px, 6.2vw, 30px); font-weight: 800; letter-spacing: -.03em; margin: 0 0 4px; }
.auth-title .kar { color: var(--accent); }
.auth-sub { text-align: center; color: var(--ink-soft); margin: 0 0 26px; font-size: 15px; }
.auth-card {
  background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: 20px; padding: 22px; box-shadow: var(--shadow);
  margin-bottom: 14px;
}
.auth-or { text-align: center; color: var(--ink-faint); font-size: 13px; margin: 18px 0; }
.auth-note { font-size: 13px; color: var(--ink-faint); text-align: center; margin-top: 10px; }
.link-btn { border: 0; background: none; color: var(--accent-text); cursor: pointer; font-weight: 600; padding: 0; }
.link-btn:hover { text-decoration: underline; }

/* --- тосты -------------------------------------------------- */
.toasts {
  position: fixed; bottom: calc(72px + env(safe-area-inset-bottom)); left: 0; right: 0;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 60; pointer-events: none; padding: 0 16px;
}
@media (min-width: 720px) { .toasts { bottom: 28px; } }
.toast {
  background: var(--ink); color: var(--bg); border-radius: 12px;
  padding: 11px 18px; font-size: 14.5px; font-weight: 550;
  box-shadow: var(--shadow-lg); max-width: 420px;
  opacity: 0; transform: translateY(14px) scale(.96);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.toast.show { opacity: 1; transform: none; }
html.motion-ui .toast { transition: none; }
html.motion-ui .toast.show { opacity: 1; transform: none; }
.toast.error { background: var(--danger); color: var(--btn-ink); }
.toast.ok { background: var(--ok); color: var(--btn-ink); }
.toast-actionable {
  pointer-events: auto;
  display: flex; align-items: center; gap: 14px;
  max-width: min(420px, calc(100vw - 32px));
  background: var(--bg-raised);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  font-weight: 500;
}
.toast-msg { flex: 1; min-width: 0; }
.toast-action {
  flex: none; border: 0; border-radius: 8px; cursor: pointer;
  padding: 6px 12px; font-weight: 650; font-size: 13px;
  background: var(--paper-deep); color: var(--ink);
}
.toast-action:hover { background: var(--line); }
.toast.ok .toast-action { background: rgba(0,0,0,.12); }
.toast.ok .toast-action:hover { background: rgba(0,0,0,.18); }

/* --- спиннер ------------------------------------------------ */
.spinner {
  width: 22px; height: 22px; border-radius: 999px;
  border: 2.5px solid var(--line); border-top-color: var(--accent);
  animation: spin .8s linear infinite; margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }
.center-pad { padding: 60px 0; }

/* --- разное -------------------------------------------------- */
.row { display: flex; align-items: center; gap: 10px; }
.grow { flex: 1; }
.muted { color: var(--ink-faint); font-size: 13px; }
.mt { margin-top: 16px; }
.hidden { display: none !important; }

.btn:focus-visible, .tab-btn:focus-visible, .nav-btn:focus-visible, .icon-btn:focus-visible,
.card-row:focus-visible, .folder-card:focus-visible, .box-card:focus-visible, .add-tile:focus-visible {
  outline: none; box-shadow: var(--focus-ring);
}

.offline-banner {
  background: var(--accent-soft);
  color: var(--ink);
  font-size: 13px;
  text-align: center;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  border: 1px solid var(--line);
}
.sync-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
}
.sync-banner[hidden] { display: none; }
.sync-banner-failed {
  background: color-mix(in srgb, var(--danger, #B3261E) 12%, var(--bg));
  border-color: color-mix(in srgb, var(--danger, #B3261E) 28%, var(--line));
}
.sync-banner-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}
.sync-banner-btn {
  font-size: 13px;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .sync-banner { align-items: flex-start; flex-direction: column; }
  .sync-banner-actions { justify-content: flex-start; }
}

/* --- Study modes --- */
.mode-pick-grid {
  display: grid;
  gap: 10px;
  margin-bottom: 4px;
}
.mode-pick-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: var(--bg-sunken);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.mode-pick-item:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--bg);
}
.mode-pick-item.is-last:not(:disabled) {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}
.mode-pick-item.is-disabled { opacity: .55; cursor: not-allowed; }
.mode-pick-title { font-size: 16px; font-weight: 750; }
.mode-pick-desc { font-size: 13px; color: var(--ink-soft); line-height: 1.35; }

.mode-pick-side-block {
  margin-bottom: 16px;
  padding: 14px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: var(--bg-sunken);
}
.mode-pick-side-label { margin: 0 0 10px !important; font-weight: 650; }
.mode-pick-side-seg { width: 100%; display: flex; }
.mode-pick-side-seg button { flex: 1; }
.mode-pick-side-hint {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.35;
}
.mode-pick-modes-label { margin: 0 0 10px !important; font-weight: 650; }
.mode-pick-limit-block { margin-bottom: 4px; }
.mode-pick-limit-seg { flex-wrap: nowrap; width: 100%; }
.mode-pick-limit-seg > button { flex: 0 0 auto; min-width: 2.6rem; padding-left: 10px; padding-right: 10px; }
.mode-pick-limit-other {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  align-items: stretch;
  border-radius: 9px;
  transition: background var(--dur) var(--ease), box-shadow var(--dur);
}
.mode-pick-limit-other.active {
  background: var(--bg-raised);
  box-shadow: var(--shadow);
}
.mode-pick-limit-input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 7px 10px;
  border-radius: 9px;
  font: inherit;
  font-weight: 600;
  font-size: 13.5px;
  color: var(--ink);
  outline: none;
}
.mode-pick-limit-input::placeholder { color: var(--ink-soft); font-weight: 600; }
.mode-pick-limit-input::-webkit-outer-spin-button,
.mode-pick-limit-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.mode-pick-limit-input[type='number'] { -moz-appearance: textfield; appearance: textfield; }
.review-stats {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--accent);
}

.hero-btns { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
.pack-chip {
  display: inline-block;
  margin-top: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--accent) 14%, var(--bg));
  color: var(--accent);
}
.pack-folder-note { margin: -8px 0 14px; font-size: 13px; text-align: center; }

.vocab-pack-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; max-height: min(62vh, 520px); overflow-y: auto; }
.vocab-pack-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: var(--bg-sunken);
}
@media (max-width: 520px) {
  .vocab-pack-item { grid-template-columns: auto 1fr; }
  .vocab-pack-actions { grid-column: 1 / -1; justify-content: flex-end; }
}
.vocab-pack-swatch {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 13px;
}
.vocab-pack-title-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.vocab-pack-title { font-size: 16px; }
.vocab-pack-sub { margin: 4px 0 0; font-size: 13px; color: var(--ink-soft); line-height: 1.35; }
.vocab-pack-meta { margin: 4px 0 0; font-size: 12px; }
.vocab-pack-status {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-raised);
  color: var(--ink-faint);
}
.vocab-pack-status.is-installed {
  background: var(--ok-soft);
  color: var(--ok);
}
.vocab-pack-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.danger-text { color: var(--danger); }

.modal-box.has-pack-install { overflow: hidden; position: relative; }
.vocab-pack-install-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 20px;
  border-radius: inherit;
  background: color-mix(in srgb, var(--bg-raised) 92%, transparent);
  backdrop-filter: blur(6px);
  animation: packInstallIn .28s var(--ease) both;
}
.vocab-pack-install-panel {
  width: min(100%, 320px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.vocab-pack-install-panel.is-done .vocab-pack-install-spin { opacity: 0; transform: scale(0.85); }
.vocab-pack-install-spin { transition: opacity .2s, transform .2s; }
.vocab-pack-install-title { font-size: 17px; }
.vocab-pack-install-level { margin: 0; font-size: 13px; }
.vocab-pack-install-status { margin: 4px 0 0; font-size: 15px; font-weight: 650; }
.vocab-pack-install-bar {
  width: 100%;
  height: 10px;
  margin-top: 4px;
  background: var(--paper-deep);
  box-shadow: inset 0 1px 2px rgba(44,34,25,.08);
}
.vocab-pack-install-bar > div {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--terra-deep), var(--accent-bright));
  border-radius: 999px;
  transition: width .12s linear;
}
.vocab-pack-install-bar.is-indeterminate > div {
  width: 38% !important;
  animation: packInstallIndeterminate 1.1s ease-in-out infinite;
}
.vocab-pack-install-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
  font-size: 13px;
}
.vocab-pack-install-pct { font-weight: 750; font-size: 14px; color: var(--accent); }
.vocab-pack-install-detail { margin: 0; }
@keyframes packInstallIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes packInstallIndeterminate {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(320%); }
}

.study-prompt-card {
  background: var(--bg-raised);
  border: 1.5px solid var(--line);
  border-radius: 16px;
  padding: 28px 20px;
  margin-bottom: 14px;
  min-height: 0;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}
.study-prompt-card .word { font-size: clamp(34px, 7vw, 46px); line-height: 1.15; }
.study-prompt-card .flip-face-scroll { max-height: min(42vh, 280px); overflow: auto; }
.study-hint { margin: 0 0 10px; font-size: 13px; color: var(--ink-faint); text-align: center; }
.study-answer-input { width: 100%; margin-bottom: 10px; font-size: 17px; }
.study-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.study-check-btn { min-width: 140px; }
.study-voice-card, .study-type-card { max-width: 520px; margin: 0 auto; position: relative; }
.study-voice-card {
  display: flex;
  flex-direction: column;
  min-height: min(56dvh, 500px);
  padding-top: clamp(12px, 3.5dvh, 28px);
}
.study-voice-card .study-prompt-card {
  flex: 1 1 auto;
  min-height: min(38dvh, 340px);
  margin-bottom: 8px;
  padding: clamp(32px, 7dvh, 52px) clamp(20px, 5vw, 28px);
  border-radius: 20px;
}
.study-voice-card .study-prompt-card .flip-face-scroll {
  max-height: none;
  min-height: min(24dvh, 200px);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.study-voice-card .study-voice-status {
  flex: none;
  margin: 10px 0 6px;
}
.study-voice-card .study-voice-actions {
  flex: none;
  margin-top: auto;
  padding-top: clamp(14px, 3.5dvh, 28px);
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  transition:
    opacity 0.32s var(--ease),
    transform 0.32s var(--ease),
    visibility 0.32s var(--ease);
}
.study-voice-actions.is-action-hidden {
  opacity: 0;
  transform: translateY(10px);
  visibility: hidden;
  pointer-events: none;
}
.study-voice-actions.is-action-enter.is-action-visible {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}
.study-voice-card:focus,
.study-voice-card:focus-visible {
  outline: none;
}

.study-answer-input.is-correct { border-color: var(--ok); box-shadow: 0 0 0 2px color-mix(in srgb, var(--ok) 25%, transparent); }
.study-answer-input.is-wrong { border-color: var(--danger); box-shadow: 0 0 0 2px color-mix(in srgb, var(--danger) 20%, transparent); }
.study-answer-input.is-animating.is-correct { animation: inputSuccessBounce .48s var(--ease); }
.study-answer-input.is-animating.is-wrong { animation: inputWrongShake .42s ease; }

.study-feedback { margin: 0 0 12px; font-size: 14px; font-weight: 650; text-align: center; width: 100%; }
.study-feedback.is-correct { color: var(--ok); }
.study-feedback.is-wrong { color: var(--danger); }
.study-feedback.is-enter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  animation: feedbackPopIn .44s var(--ease) both;
}
.answer-feedback-row {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  /* Иконка слева визуально тянет блок — лёгкий сдвиг вправо */
  transform: translateX(4px);
}
.answer-feedback-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
  flex: none;
  padding-top: 1px;
  animation: iconPop .36s var(--ease) .05s both;
}
.study-feedback.is-correct .answer-feedback-icon {
  background: var(--ok-soft);
  color: var(--ok);
}
.study-feedback.is-wrong .answer-feedback-icon {
  background: var(--danger-soft);
  color: var(--danger);
}
.answer-feedback-text { line-height: 1.2; text-align: center; }

.study-prompt-card.answer-flash-correct {
  animation: promptTintOk .7s var(--ease);
}
.study-prompt-card.answer-flash-wrong {
  animation: promptTintBad .7s var(--ease);
}
@keyframes promptTintOk {
  0%, 100% {
    background: var(--bg-raised);
    border-color: var(--line);
  }
  30% {
    background: color-mix(in srgb, var(--ok) 13%, var(--bg-raised));
    border-color: color-mix(in srgb, var(--ok) 38%, var(--line));
  }
}
@keyframes promptTintBad {
  0%, 100% {
    background: var(--bg-raised);
    border-color: var(--line);
  }
  30% {
    background: color-mix(in srgb, var(--danger) 12%, var(--bg-raised));
    border-color: color-mix(in srgb, var(--danger) 35%, var(--line));
  }
}

@keyframes inputSuccessBounce {
  0% { transform: scale(1); }
  35% { transform: scale(1.018); }
  100% { transform: scale(1); }
}
@keyframes inputWrongShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
@keyframes feedbackPopIn {
  from { opacity: 0; transform: translateY(10px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes iconPop {
  from { opacity: 0; transform: scale(0.4); filter: blur(3px); }
  to { opacity: 1; transform: scale(1); filter: blur(0); }
}
.study-voice-actions [hidden] { display: none !important; }
.study-mic-btn, .study-check-btn { min-width: 160px; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.study-mic-btn.is-listening,
.study-check-btn.is-listening {
  animation: micPulse 1s ease-in-out infinite;
  border-color: var(--accent);
}
@keyframes micPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .65; }
}
.study-voice-status { text-align: center; margin: 0 0 12px; min-height: 1.4em; }

.match-round-label { text-align: center; font-weight: 700; margin: 0 0 4px; }
.match-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: start;
}
@media (max-width: 520px) {
  .match-board { grid-template-columns: 1fr; }
}
.match-col { display: flex; flex-direction: column; gap: 8px; }
.match-col-terms::before,
.match-col-defs::before {
  content: 'Термины';
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 0 4px;
}
.match-col-defs::before { content: 'Переводы'; }
.match-item {
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.35;
  cursor: pointer;
  transition: border-color .12s, background .12s, transform .12s;
}
.match-item:hover:not(:disabled) { border-color: var(--accent); }
.match-item.is-selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--bg)); }
.match-item.is-paired {
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 10%, var(--bg));
  opacity: .85;
  cursor: default;
}
.match-item.match-shake { animation: matchShake .38s ease; }
.match-item.match-pair-success {
  animation: matchPairSuccess .44s var(--ease) both;
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 16%, var(--bg));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--ok) 22%, transparent);
}
.match-item.match-pair-wrong {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 10%, var(--bg));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--danger) 18%, transparent);
}
.match-hint.match-hint-success { animation: hintFlashOk .5s var(--ease); color: var(--ok); }
.match-hint.match-hint-wrong { animation: hintFlashBad .5s var(--ease); color: var(--danger); }
@keyframes matchShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
@keyframes matchPairSuccess {
  0% { transform: scale(1); }
  45% { transform: scale(1.045); }
  100% { transform: scale(1); }
}
@keyframes hintFlashOk {
  0% { opacity: .5; transform: scale(0.96); }
  40% { opacity: 1; transform: scale(1.02); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes hintFlashBad {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-3px); }
  75% { transform: translateX(3px); }
}

.setting-row-stack { flex-direction: column; align-items: stretch; gap: 12px; }

.sound-settings-compact .sound-pickers {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}
.sound-mode-row { margin-top: 4px; }

.melody-picker-wrap { position: relative; width: 100%; }
.melody-picker-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: var(--bg-sunken);
  font-size: 15px;
  cursor: pointer;
  text-align: left;
  transition: border-color .12s, background .12s;
}
.melody-picker-trigger:hover,
.melody-picker-wrap.is-open .melody-picker-trigger {
  border-color: var(--accent);
}
.melody-picker-lab {
  flex: none;
  font-weight: 650;
  color: var(--text-muted);
  min-width: 4.5em;
}
.melody-picker-value {
  flex: 1;
  font-weight: 650;
}
.melody-picker-chevron {
  flex: none;
  font-size: 12px;
  opacity: .55;
  transition: transform .15s;
}
.melody-picker-wrap.is-open .melody-picker-chevron { transform: rotate(180deg); }

.melody-picker-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 6px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: var(--bg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
}
.melody-picker-wrap.is-open .melody-picker-menu {
  display: flex;
}
.melody-picker-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  background: transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background .1s;
}
.melody-picker-option:hover { background: var(--bg-sunken); }
.melody-picker-option.is-active {
  background: color-mix(in srgb, var(--accent) 12%, var(--bg));
  color: var(--accent);
}
.melody-picker-option-label { flex: 1; }
.melody-picker-play {
  flex: none;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 10px;
  border: 1.5px solid var(--line);
  background: var(--bg-sunken);
  font-size: 12px;
  cursor: pointer;
  transition: border-color .1s, background .1s;
}
.melody-picker-play:hover { border-color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  .study-answer-input.is-animating.is-correct,
  .study-answer-input.is-animating.is-wrong,
  .study-feedback.is-enter,
  .answer-feedback-icon,
  .study-prompt-card.answer-flash-correct,
  .study-prompt-card.answer-flash-wrong,
  .match-item.match-pair-success,
  .match-item.match-shake,
  .match-hint.match-hint-success,
  .match-hint.match-hint-wrong {
    animation: none !important;
  }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* Пасхалка: дождь из перьев после 10 нажатий на ворону */
.brand-logo.is-raven-hidden {
  visibility: hidden;
  opacity: 0;
  transform: scale(0.5) rotate(-12deg);
  transition: transform 0.22s var(--ease), opacity 0.2s var(--ease), visibility 0.2s;
}
.feather-storm {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  overflow: hidden;
}
.feather-storm__feather {
  position: absolute;
  top: -12%;
  opacity: 0.88;
  object-fit: contain;
  animation: feather-fall var(--dur, 1.6s) var(--delay, 0s) ease-in forwards;
  will-change: transform, opacity;
}
@keyframes feather-fall {
  0% {
    transform: translate(var(--x0, 0), 0) rotate(var(--r0, 0deg));
    opacity: 0.92;
  }
  85% { opacity: 0.75; }
  100% {
    transform: translate(var(--x1, 0), 115vh) rotate(var(--r1, 180deg));
    opacity: 0;
  }
}
@media (max-width: 520px) {
  .main { padding-left: 16px; padding-right: 16px; }
  .header-in { padding-left: 16px; padding-right: 16px; }
  .auth-card { padding: 18px 16px; }
  .mode-pick-limit-seg { flex-wrap: wrap; }
  .mode-pick-limit-seg > button { flex: 1 1 auto; min-width: 2.4rem; }
  .mode-pick-limit-other { flex: 1 1 100%; }
  .toast-action { min-height: 36px; padding: 8px 14px; }
}