@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500;1,600;1,700&display=swap');

/* ─── Переменные ──────────────────────────────────────────────────────────── */
:root {
  /* Фон и нейтральные */
  --bg:         #F4F7FF;
  --white:      #FFFFFF;
  --black:      #1B2D6B;

  /* Stone-палитра (текст, рамки) */
  --stone-50:   #F8FAFF;
  --stone-100:  #EDF1FB;
  --stone-200:  #D9E0F5;
  --stone-300:  #B8C4E8;
  --stone-400:  #8898C8;
  --stone-500:  #5C6FA8;
  --stone-600:  #3D5090;
  --stone-800:  #1E3070;
  --stone-900:  #1B2D6B;

  /* Брендовые цвета */
  --blue:        #4B7BF5;
  --blue-dark:   #1B2D6B;
  --blue-mid:    #3461E8;
  --blue-light:  #E8EFFE;
  --blue-soft:   #C7D7FC;
  --pink:        #F472B6;
  --pink-dark:   #BE185D;
  --pink-light:  #FCE7F3;
  --pink-soft:   #F9A8D4;
  --violet:      #818CF8;

  /* Amber (оставляем для предупреждений) */
  --amber-100:  #FEF3C7;
  --amber-200:  #FDE68A;
  --amber-500:  #F59E0B;

  /* Радиусы */
  --radius-xs:  8px;
  --radius-sm:  16px;
  --radius:     24px;
  --radius-lg:  32px;
  --radius-xl:  40px;
  --radius-2xl: 48px;

  /* Тени */
  --shadow-sm:  0 2px 8px rgba(75,123,245,0.08), 0 1px 3px rgba(75,123,245,0.04);
  --shadow:     0 4px 20px rgba(75,123,245,0.12), 0 2px 6px rgba(75,123,245,0.06);
  --shadow-lg:  0 16px 48px rgba(27,45,107,0.14), 0 6px 18px rgba(75,123,245,0.08);
  --shadow-xl:  0 28px 72px rgba(27,45,107,0.16), 0 10px 28px rgba(75,123,245,0.1);
  --shadow-blue: 0 12px 32px rgba(75,123,245,0.32);
  --shadow-pink: 0 8px 24px rgba(244,114,182,0.3);
}

/* ─── Сброс ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  height: 100%;
  overflow-x: hidden;
}
html, body { height: 100%; max-width: 100vw; overflow-x: hidden; }

body {
  font-family: 'Outfit', 'Inter', sans-serif;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(75,123,245,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75,123,245,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--stone-900);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font-family: inherit; }

/* ─── Шрифт-компаньон ─────────────────────────────────────────────────────── */
.serif { font-family: 'Cormorant Garamond', serif; }

/* ─── Логотип ─────────────────────────────────────────────────────────────── */
.logo-wrap {
  display: flex; align-items: center; gap: 12px;
}

.logo-icon {
  background: linear-gradient(135deg, var(--blue-mid), var(--blue-dark));
  color: white;
  border-radius: var(--radius-sm); display: flex;
  align-items: center; justify-content: center;
  flex-shrink: 0; box-shadow: var(--shadow-blue);
}
.logo-icon-lg { width: 52px; height: 52px; }
.logo-icon-md { width: 44px; height: 44px; }
.logo-icon-sm { width: 36px; height: 36px; border-radius: 10px; }

.logo-text-block { display: flex; flex-direction: column; line-height: 1; }
.logo-name {
  font-family: 'Outfit', sans-serif;
  font-weight: 900; letter-spacing: -0.03em; color: var(--blue-dark);
}
.logo-name-lg { font-size: 1.5rem; }
.logo-name-md { font-size: 1.25rem; }
.logo-name-sm { font-size: 1rem; }

.logo-sub {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.22em; color: var(--blue); margin-top: 3px;
}

/* Большой логотип для auth-страниц */
.logo-auth {
  text-align: center;
  margin-bottom: 40px;
}
.logo-auth .logo-icon {
  width: 72px; height: 72px; border-radius: 22px;
  margin: 0 auto 20px;
}
.logo-auth .logo-name {
  font-size: 2rem; display: block; margin-bottom: 4px;
}
.logo-auth .logo-sub {
  font-size: 0.72rem; margin-top: 0;
}

/* ─── Auth страницы ───────────────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center; padding: 24px;
  position: relative; overflow: hidden;
}

/* Декоративные blobs */
.bg-blobs { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.blob {
  position: absolute; border-radius: 50%;
  animation: blobFloat 20s infinite ease-in-out;
}
.blob-1 {
  width: 500px; height: 500px;
  background: rgba(75,123,245,0.08);
  top: -15%; left: -10%;
}
.blob-2 {
  width: 400px; height: 400px;
  background: rgba(244,114,182,0.08);
  bottom: -10%; right: -10%;
  animation-delay: -7s;
}
.blob-3 {
  width: 300px; height: 300px;
  background: rgba(129,140,248,0.07);
  top: 40%; left: 40%;
  animation-delay: -14s;
}
@keyframes blobFloat {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(30px,-25px) scale(1.04); }
  66%      { transform: translate(-20px, 20px) scale(0.97); }
}

.auth-card {
  position: relative; z-index: 1;
  width: 100%; max-width: 440px;
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: 48px 44px;
  box-shadow: var(--shadow-xl);
  border: 1.5px solid var(--blue-soft);
}

.auth-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem; font-weight: 600; font-style: italic;
  text-align: center; margin-bottom: 6px; color: var(--blue-dark);
}
.auth-subtitle {
  font-size: 0.9rem; color: var(--stone-400);
  text-align: center; margin-bottom: 36px; font-weight: 300;
}

/* ─── Форма ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }

.form-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.7rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.18em; color: var(--stone-400); margin-bottom: 10px;
}

.form-input, .form-select {
  width: 100%;
  background: var(--stone-50);
  border: 1.5px solid var(--stone-100);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  color: var(--stone-900); font-size: 1rem;
  font-family: 'Outfit', sans-serif;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  outline: none; appearance: none;
}
.form-input:focus, .form-select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(75,123,245,0.1);
  background: var(--white);
}
.form-input::placeholder { color: var(--stone-300); }
textarea.form-input { min-height: 110px; resize: vertical; }

/* Инвайт-поле */
.invite-field .form-input {
  font-family: 'Courier New', monospace;
  letter-spacing: 3px; font-size: 1.1rem; font-weight: 700;
  text-transform: uppercase; text-align: center;
}

.form-hint { font-size: 0.78rem; color: var(--stone-400); margin-top: 6px; }

/* ─── Кнопки ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 14px 24px;
  border-radius: var(--radius-lg);
  font-size: 0.95rem; font-weight: 700; font-family: 'Outfit', sans-serif;
  cursor: pointer; border: none;
  transition: all 0.2s; white-space: nowrap;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  box-shadow: var(--shadow-blue);
}
.btn-primary:not(:disabled):hover {
  background: linear-gradient(135deg, var(--blue-mid), var(--blue-dark));
  box-shadow: 0 16px 40px rgba(75,123,245,0.42);
  transform: translateY(-1px);
}

.btn-full { width: 100%; padding: 18px; font-size: 1rem; }

.btn-ghost {
  background: var(--white); color: var(--blue-dark);
  border: 1.5px solid var(--blue-soft);
}
.btn-ghost:hover { background: var(--blue-light); border-color: var(--blue); }

.btn-outline {
  background: transparent; color: var(--blue-dark);
  border: 1.5px solid var(--stone-300);
}
.btn-outline:hover { background: var(--blue-light); border-color: var(--blue); }

.btn-danger {
  background: #FEF2F2; color: #DC2626;
  border: 1.5px solid #FECACA;
}
.btn-danger:hover { background: #FEE2E2; }

.btn-success {
  background: #F0FDF4; color: #16A34A;
  border: 1.5px solid #BBF7D0;
}
.btn-success:hover { background: #DCFCE7; }

.btn-pink {
  background: linear-gradient(135deg, var(--pink), var(--pink-dark));
  color: white;
  box-shadow: var(--shadow-pink);
}
.btn-pink:not(:disabled):hover {
  box-shadow: 0 12px 36px rgba(244,114,182,0.45);
  transform: translateY(-1px);
}

.btn-sm  { padding: 9px 16px; font-size: 0.82rem; border-radius: var(--radius-sm); }
.btn-xs  { padding: 6px 12px; font-size: 0.75rem; border-radius: var(--radius-xs); }
.btn-icon { padding: 10px; width: 38px; height: 38px; border-radius: var(--radius-sm); }
.btn-pill { border-radius: 100px; }

/* ─── Алёрты ──────────────────────────────────────────────────────────────── */
.alert {
  padding: 14px 18px; border-radius: var(--radius);
  font-size: 0.88rem; margin-bottom: 20px;
  display: none; align-items: flex-start; gap: 10px; line-height: 1.55;
}
.alert.show { display: flex; }

.alert-error   { background: #FEF2F2; border: 1.5px solid #FECACA; color: #DC2626; }
.alert-success { background: #F0FDF4; border: 1.5px solid #BBF7D0; color: #16A34A; }
.alert-info    { background: var(--blue-light); border: 1.5px solid var(--blue-soft); color: var(--blue-mid); }
.alert-amber   { background: var(--amber-100); border: 1.5px solid var(--amber-200); color: #92400E; }

.auth-footer {
  text-align: center; margin-top: 28px;
  font-size: 0.85rem; color: var(--stone-400); font-weight: 300;
}
.auth-footer a { color: var(--blue); font-weight: 700; }
.auth-footer a:hover { text-decoration: underline; }

/* ─── Layout: sidebar + main ──────────────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 264px; flex-shrink: 0;
  background: rgba(255,255,255,0.88);
  border-right: 1.5px solid var(--blue-soft);
  display: flex; flex-direction: column;
  position: fixed; left: 0; top: 0; bottom: 0; z-index: 200;
  padding: 32px 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.sidebar-logo { padding: 0 8px 28px; border-bottom: 1.5px solid var(--blue-soft); margin-bottom: 16px; }

.nav-group-label {
  font-size: 0.65rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--stone-300); padding: 10px 12px 4px;
}

.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 12px 14px; border-radius: var(--radius);
  cursor: pointer; transition: all 0.15s;
  color: var(--stone-400); font-size: 0.88rem; font-weight: 700;
  border: 1.5px solid transparent; user-select: none;
}
.nav-item:hover { background: var(--blue-light); color: var(--blue-dark); border-color: var(--blue-soft); }
.nav-item.active {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  box-shadow: var(--shadow-blue);
  transform: translateX(3px);
  border-color: transparent;
}
.nav-item.active svg { stroke: white; }
.nav-icon { width: 18px; flex-shrink: 0; }

.sidebar-footer {
  margin-top: auto; padding-top: 16px; border-top: 1.5px solid var(--blue-soft);
}

.user-chip {
  display: flex; align-items: center; gap: 11px; padding: 12px 10px;
}

.avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  display: flex; align-items: center; justify-content: center;
  font-family: 'Outfit', sans-serif; font-weight: 900; font-size: 0.9rem;
  color: white; flex-shrink: 0; text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(75,123,245,0.3);
}

.user-info-block .user-name  { font-size: 0.88rem; font-weight: 700; color: var(--blue-dark); }
.user-info-block .user-role  { font-size: 0.72rem; color: var(--stone-400); font-weight: 500; }

/* ─── Main content ────────────────────────────────────────────────────────── */
.main-content {
  flex: 1; margin-left: 264px;
  padding: 40px 48px; min-height: 100vh;
}

/* ─── Секции страниц ──────────────────────────────────────────────────────── */
.page-section { display: none; animation: fadeUp 0.25s ease; }
.page-section.active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-header { margin-bottom: 32px; }

.page-title {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem; font-weight: 900;
  color: var(--blue-dark); line-height: 1.15; letter-spacing: -0.02em;
}
.page-title em { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 600; color: var(--blue); }
.page-subtitle { color: var(--stone-400); font-size: 0.9rem; margin-top: 6px; font-weight: 400; }

.section-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 24px;
}

/* ─── Карточки ────────────────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1.5px solid var(--blue-soft);
  border-radius: var(--radius-xl);
  padding: 28px 30px;
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
  box-shadow: var(--shadow-sm);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--blue);
}
.card-flat:hover { transform: none; box-shadow: var(--shadow-sm); border-color: var(--blue-soft); }

.card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.card-title  { font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 800; line-height: 1.3; color: var(--blue-dark); }
.card-meta   { font-size: 0.78rem; color: var(--stone-400); margin-bottom: 10px; font-weight: 500; }
.card-body   { font-size: 0.9rem; color: var(--stone-500); line-height: 1.7; font-weight: 400; }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; align-items: center; }
.card-actions-mobile { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.card-actions-mobile .btn { width: 100%; justify-content: center; padding: 13px 20px; font-size: 0.95rem; }

/* ─── Гриды ───────────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px,1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 16px; }

/* ─── Статистика ──────────────────────────────────────────────────────────── */
.stats-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: 16px; margin-bottom: 36px; }

.stat-card {
  background: var(--white); border: 1.5px solid var(--blue-soft);
  border-radius: var(--radius-xl); padding: 24px;
  text-align: center; box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--violet), var(--pink));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.stat-value {
  font-family: 'Outfit', sans-serif; font-size: 2.5rem; font-weight: 900;
  color: var(--blue-dark); line-height: 1;
}
.stat-label { font-size: 0.72rem; color: var(--stone-400); margin-top: 6px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }

/* ─── Таблица ─────────────────────────────────────────────────────────────── */
.table-wrap {
  background: var(--white); border: 1.5px solid var(--blue-soft);
  border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-sm);
}

table { width: 100%; border-collapse: collapse; }

th {
  padding: 14px 18px; text-align: left;
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--blue); border-bottom: 1.5px solid var(--blue-soft);
  background: var(--blue-light); font-weight: 800;
}

td {
  padding: 16px 18px; font-size: 0.88rem;
  border-bottom: 1px solid var(--stone-100); vertical-align: middle;
  color: var(--stone-600);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--stone-50); }

/* ─── Бейджи ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.04em;
}
.badge-dark   { background: var(--blue-dark); color: white; }
.badge-blue   { background: var(--blue-light); color: var(--blue-mid); border: 1px solid var(--blue-soft); }
.badge-pink   { background: var(--pink-light); color: var(--pink-dark); border: 1px solid var(--pink-soft); }
.badge-light  { background: var(--stone-100); color: var(--stone-600); }
.badge-green  { background: #DCFCE7; color: #15803D; }
.badge-red    { background: #FEE2E2; color: #DC2626; }
.badge-yellow { background: #FEF9C3; color: #A16207; }
.badge-amber  { background: var(--amber-100); color: #92400E; }

/* ─── Модальные окна ──────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(27,45,107,0.35);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; visibility: hidden; transition: all 0.2s;
}
.modal-backdrop.open { opacity: 1; visibility: visible; }

.modal-box {
  background: var(--white); border: 1.5px solid var(--blue-soft);
  border-radius: var(--radius-2xl); padding: 36px;
  width: 100%; max-width: 580px; max-height: 90vh; overflow-y: auto;
  transform: scale(0.93); transition: transform 0.2s;
  box-shadow: var(--shadow-xl);
}
.modal-backdrop.open .modal-box { transform: scale(1); }

.modal-head {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px;
}
.modal-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem; font-weight: 900; color: var(--blue-dark);
}

.modal-close {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: var(--blue-light); border: 1.5px solid var(--blue-soft);
  color: var(--blue); cursor: pointer; display: flex;
  align-items: center; justify-content: center; font-size: 1.1rem;
  transition: all 0.15s;
}
.modal-close:hover { background: var(--blue-soft); color: var(--blue-dark); }

/* ─── Код приглашения ─────────────────────────────────────────────────────── */
.invite-code-display {
  font-family: 'Courier New', monospace;
  font-size: 1.3rem; font-weight: 800; letter-spacing: 4px;
  color: var(--blue-dark); text-align: center;
  background: var(--blue-light); border: 2px dashed var(--blue-soft);
  border-radius: var(--radius-lg); padding: 18px;
  cursor: pointer; transition: all 0.15s; user-select: all;
}
.invite-code-display:hover { background: var(--blue-soft); border-color: var(--blue); }

/* ─── Вложения ────────────────────────────────────────────────────────────── */
.files-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.file-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue-light); border: 1.5px solid var(--blue-soft);
  border-radius: var(--radius-sm); padding: 7px 14px;
  font-size: 0.78rem; color: var(--blue-dark); font-weight: 700;
  text-decoration: none; transition: all 0.15s;
  max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.file-chip:hover { background: var(--blue-soft); border-color: var(--blue); }

/* ─── Пустое состояние ────────────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 72px 24px; color: var(--stone-400);
}
.empty-icon  { font-size: 2.8rem; margin-bottom: 16px; opacity: 0.5; display: block; }
.empty-title { font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1.1rem; color: var(--blue-dark); margin-bottom: 6px; }
.empty-text  { font-size: 0.85rem; font-weight: 400; }

/* ─── Уведомление-тост ────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 28px; right: 28px;
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  padding: 14px 22px; border-radius: var(--radius-lg);
  font-size: 0.88rem; font-weight: 700; z-index: 9999;
  opacity: 0; transform: translateY(14px); transition: all 0.3s;
  pointer-events: none; max-width: 320px; box-shadow: var(--shadow-blue);
}
.toast.error { background: #DC2626; }
.toast.show  { opacity: 1; transform: translateY(0); }

/* ─── Разделитель ─────────────────────────────────────────────────────────── */
hr.divider { border: none; border-top: 1.5px solid var(--blue-soft); margin: 24px 0; }

/* ─── Содержимое урока ────────────────────────────────────────────────────── */
.lesson-content {
  font-size: 1rem; line-height: 1.85; color: var(--stone-600);
  white-space: pre-wrap; word-break: break-word; font-weight: 400;
}

/* ─── Скроллбар ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--blue-soft); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue); }

/* ─── Адаптив ─────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .main-content {
    margin-left: 0;
    padding: 24px 20px;
    padding-top: calc(24px + env(safe-area-inset-top, 0px));
    padding-bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .section-toolbar { flex-direction: column; align-items: flex-start; gap: 12px; }
}
@media (max-width: 480px) {
  .auth-card { padding: 36px 24px; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .main-content {
    padding: 20px 16px;
    padding-top: calc(20px + env(safe-area-inset-top, 0px));
    padding-bottom: calc(84px + env(safe-area-inset-bottom, 0px));
    overflow-x: hidden;
    max-width: 100vw;
  }
  .card { max-width: 100%; word-break: break-word; }
  .card-header { flex-wrap: wrap; }
  .card-title { word-break: break-word; min-width: 0; }
}

/* ─── Просмотрщик заданий — мобильная адаптация ──────────────────────────── */
#assignmentViewer {
  overflow-x: hidden !important;
}

/* Сетка разделов: одна колонка на телефоне */
@media (max-width: 600px) {
  #avOverview {
    padding: 16px 14px !important;
  }
  #avSectionView {
    padding: 16px 14px !important;
  }
  #avSectionGrid {
    grid-template-columns: 1fr !important;
  }

  /* Баннер «Повторение теории» — стекируем вертикально */
  #av-theory-banner {
    flex-direction: column !important;
    gap: 12px !important;
    padding: 20px !important;
  }

  /* Заголовок вьювера меньше */
  #avTitle {
    font-size: 1.4rem !important;
  }

  /* Блок завершения раздела — убираем min-width */
  #avSectionSubmitWrap .av-complete-inner {
    flex-direction: column !important;
    align-items: flex-start !important;
  }
  #avSectionSubmitWrap .av-complete-inner > div {
    min-width: 0 !important;
  }

  /* Теория: уменьшаем отступы */
  #avTheoryText {
    padding: 16px !important;
    font-size: 0.85rem !important;
  }

  /* Вопросы: уменьшаем отступы карточек */
  #avSectionQuestions > div {
    padding: 16px !important;
  }

  /* Опции ответов — не дают уехать за экран */
  #avSectionQuestions label {
    word-break: break-word;
  }
  #avSectionQuestions input[type="text"],
  #avSectionQuestions textarea {
    max-width: 100%;
  }

  /* Верхняя строка навигации */
  #avTopTitle {
    font-size: 0.8rem !important;
  }
}

/* ─── Мобильная нижняя навигация ──────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1.5px solid var(--blue-soft);
  padding: 8px 4px;
  padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
  z-index: 200;
  justify-content: space-around;
  align-items: center;
  box-shadow: 0 -4px 24px rgba(75,123,245,0.1);
}
.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 5px 6px;
  cursor: pointer;
  color: var(--stone-400);
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-radius: 14px;
  transition: color 0.15s, background 0.15s;
  flex: 1;
  max-width: 62px;
}
.mobile-nav-item svg { width: 20px; height: 20px; stroke-width: 2; }
.mobile-nav-item.active {
  color: var(--blue-dark);
  background: linear-gradient(135deg, #dbeafe, #e0e7ff);
}
.mobile-nav-item.active svg { stroke: var(--blue-dark); }
@media (max-width: 900px) {
  .mobile-nav { display: flex; }
  /* Улучшаем mobile nav для больших телефонов */
  .mobile-nav-item { max-width: 72px; padding: 6px 8px; font-size: 0.58rem; }
}

/* ─── Календарь ──────────────────────────────────────────────────────────── */
.cal-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cal-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 6px; min-width: 560px; }
.cal-col {
  background: white; border-radius: 16px;
  border: 1.5px solid var(--blue-soft);
  display: flex; flex-direction: column; min-height: 130px; overflow: hidden;
}
.cal-col-weekend { background: var(--stone-50); }
.cal-day-header {
  display: flex; flex-direction: column; align-items: center;
  padding: 8px 4px 6px; border-bottom: 1.5px solid var(--blue-soft); gap: 1px;
}
.cal-day-header.cal-today { background: linear-gradient(135deg, var(--blue), var(--blue-mid)); }
.cal-day-name { font-size: 0.6rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; color: var(--stone-400); }
.cal-today .cal-day-name { color: rgba(255,255,255,0.7); }
.cal-day-num { font-size: 1.1rem; font-weight: 800; color: var(--blue-dark); line-height: 1; }
.cal-today .cal-day-num { color: white; }
.cal-events { flex: 1; padding: 5px; display: flex; flex-direction: column; gap: 3px; }
.cal-event {
  padding: 5px 7px; border-radius: 8px; cursor: pointer;
  font-size: 0.72rem; display: flex; flex-direction: column; gap: 1px;
  transition: opacity 0.15s;
  overflow: hidden; word-break: normal; overflow-wrap: break-word;
}
.cal-event:hover { opacity: 0.85; transform: translateY(-1px); transition: opacity 0.15s, transform 0.1s; }
.cal-event-time { font-weight: 800; font-size: 0.65rem; opacity: 0.75; flex-shrink: 0; }
.cal-event-header { display: flex; align-items: flex-start; gap: 4px; overflow: hidden; }
.cal-event-emoji { font-size: 0.8rem; flex-shrink: 0; line-height: 1.35; }
.cal-event-title {
  font-weight: 700; line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.cal-event-student { font-size: 0.65rem; opacity: 0.7; flex-shrink: 0; }
/* AI-событие: описание — не более 3 строк */
.cal-event-desc {
  font-size: 0.67rem; line-height: 1.45; opacity: 0.82; margin-top: 2px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
/* AI-события — чуть более структурированная карточка */
.cal-event-ai {
  padding: 6px 8px; gap: 3px; border-left: 3px solid rgba(0,0,0,0.12);
}
.cal-ev-0 { background: #dbeafe; color: #1d4ed8; }
.cal-ev-1 { background: #dcfce7; color: #15803d; }
.cal-ev-2 { background: #fef3c7; color: #b45309; }
.cal-ev-3 { background: #f3e8ff; color: #7c3aed; }
.cal-ev-4 { background: #fee2e2; color: #dc2626; }
.cal-ev-5 { background: #fce7f3; color: #be185d; }
.cal-ev-6 { background: #e0f2fe; color: #0369a1; }
/* Кнопка очистки дня */
.cal-clear-btn {
  border: none; background: none; color: var(--stone-300); font-size: 0.85rem;
  padding: 6px 7px; cursor: pointer; transition: all 0.15s;
  border-top: 1px dashed var(--blue-soft); flex-shrink: 0;
}
.cal-clear-btn:hover { background: #fef2f2; color: #ef4444; border-radius: 0 0 8px 0; }
.cal-add-btn {
  width: 100%; border: none; background: none; color: var(--stone-300);
  font-size: 1.2rem; padding: 6px; cursor: pointer; transition: all 0.15s;
  border-top: 1px dashed var(--blue-soft); flex-shrink: 0;
}
.cal-add-btn:hover { background: var(--blue-light); color: var(--blue); }

/* Месячный календарь (ученик) */
.month-cal-wrap { background: white; border-radius: 20px; border: 1.5px solid var(--blue-soft); overflow: hidden; }
.month-weekdays {
  display: grid; grid-template-columns: repeat(7,1fr);
  border-bottom: 1.5px solid var(--blue-soft);
  background: var(--blue-light);
}
.month-wd {
  text-align: center; font-size: 0.62rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--blue); padding: 8px 0;
}
.month-wd.is-weekend { color: var(--pink-dark); }
.month-cal { display: grid; grid-template-columns: repeat(7,1fr); }
.month-cell {
  min-height: 72px; padding: 4px 3px 3px;
  border-right: 1px solid var(--stone-100);
  border-bottom: 1px solid var(--stone-100);
  cursor: pointer; transition: background .12s;
  display: flex; flex-direction: column; gap: 2px;
}
.month-cell:nth-child(7n) { border-right: none; }
.month-cell:hover { background: var(--blue-light); }
.month-cell.other-month { background: var(--stone-50); }
.month-day-num-wrap {
  display: flex; justify-content: center; margin-bottom: 2px;
}
.month-day-num {
  font-size: 0.85rem; font-weight: 600; color: var(--stone-700);
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.month-cell.other-month .month-day-num { color: var(--stone-300); font-weight: 400; }
.month-cell.cal-today .month-day-num { background: linear-gradient(135deg, var(--blue), var(--blue-mid)); color: white; font-weight: 800; }
.month-cell.selected .month-day-num { background: var(--pink); color: white; font-weight: 800; }
.month-cell.cal-today.selected .month-day-num { background: var(--pink); }

/* Мини-события */
.month-ev-pill {
  font-size: 0.62rem; font-weight: 700; line-height: 1.2;
  border-radius: 5px; padding: 1px 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 100%;
}
.month-ev-lesson    { background: #fef3c7; color: #92400e; }
.month-ev-assignment { background: #dcfce7; color: #166534; }
.month-ev-custom    { background: var(--blue-light); color: var(--blue-mid); }
.month-ev-more { font-size: 0.58rem; color: var(--stone-400); padding: 0 3px; }

/* ─── Фильтры-пилюли ─────────────────────────────────────────────────────── */
.filter-pill {
  border: 1.5px solid var(--blue-soft);
  background: white;
  color: var(--stone-600);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.filter-pill:hover { border-color: var(--blue); color: var(--blue-dark); background: var(--blue-light); }
.filter-pill.active {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-blue);
}

/* ─── Карточки заданий ────────────────────────────────────────────────────── */
.task-card-body { padding: 18px; }
.task-action-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1.5px solid var(--blue-soft);
  padding-top: 14px;
  margin-top: 4px;
}
.task-answer-input { flex: 1; min-width: 0; }
.task-action-btns { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; }
@media (max-width: 560px) {
  .task-card-body { padding: 14px; }
  .task-action-row { flex-direction: column; align-items: stretch; }
  .task-answer-input { max-width: 100%; }
  .task-action-btns { justify-content: stretch; }
  .task-action-btns .btn { flex: 1; text-align: center; }
}

/* ─── Главная страница — новый дизайн ─── */
.home-hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 60%, #6366f1 100%);
  border-radius: 28px;
  padding: 28px 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}
.home-hero::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
}
.home-hero::after {
  content: '';
  position: absolute;
  bottom: -50px; right: 80px;
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.home-greeting {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
  margin-bottom: 2px;
}
.home-name {
  font-size: 1.8rem;
  font-weight: 900;
  color: white;
  line-height: 1.1;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.home-progress-line {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.9);
  font-size: 0.85rem;
}
.home-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 2.5px solid rgba(255,255,255,0.4);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  font-weight: 900;
  color: white;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

/* Стат-карточки */
.home-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.home-stat-card {
  border-radius: 20px;
  padding: 18px 16px;
  position: relative;
  overflow: hidden;
  cursor: default;
}
.home-stat-blue  { background: linear-gradient(135deg, #eff6ff, #dbeafe); border: 1.5px solid #bfdbfe; }
.home-stat-pink  { background: linear-gradient(135deg, #fdf2f8, #fce7f3); border: 1.5px solid #fbcfe8; }
.home-stat-green { background: linear-gradient(135deg, #f0fdf4, #dcfce7); border: 1.5px solid #bbf7d0; }
.home-stat-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--blue-dark);
  line-height: 1;
  margin-bottom: 4px;
}
.home-stat-lbl {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--stone-400);
}
.home-stat-icon-bg {
  position: absolute;
  bottom: -4px; right: 8px;
  font-size: 2.2rem;
  opacity: 0.18;
}

/* Блок-заголовки */
.home-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  margin-top: 4px;
}
.home-block-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--blue-dark);
}
.home-see-all {
  background: none;
  border: none;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--blue);
  cursor: pointer;
  padding: 0;
}

/* Карточки уроков на главной */
.home-lesson-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: white;
  border: 1.5px solid var(--blue-soft);
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.home-lesson-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(75,123,245,0.12);
  border-color: var(--blue);
}
.home-lesson-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-light), var(--blue-soft));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.home-lesson-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--blue-dark);
  line-height: 1.3;
}
.home-lesson-sub {
  font-size: 0.75rem;
  color: var(--stone-400);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Карточки несданных заданий */
.home-assign-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: white;
  border: 1.5px solid var(--blue-soft);
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 10px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.home-assign-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(75,123,245,0.1);
}
.home-assign-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}
.home-assign-title {
  flex: 1;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--blue-dark);
  min-width: 0;
}
.home-assign-due {
  font-size: 0.73rem;
  color: var(--stone-400);
  margin-top: 2px;
}

/* Улучшенные карточки уроков */
.lesson-card-new {
  background: white;
  border: 1.5px solid var(--blue-soft);
  border-radius: 22px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.lesson-card-new:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(75,123,245,0.14);
  border-color: var(--blue);
}
.lesson-card-top {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.lesson-card-body { padding: 16px 18px 18px; }
.lesson-card-title { font-weight: 800; font-size: 0.95rem; color: var(--blue-dark); line-height: 1.3; margin-bottom: 6px; }
.lesson-card-desc  { font-size: 0.82rem; color: var(--stone-400); line-height: 1.5; margin-bottom: 12px; }
.lesson-card-tags  { display: flex; flex-wrap: wrap; gap: 6px; }

/* Улучшенные карточки заданий */
.assign-card-new {
  background: white;
  border-radius: 22px;
  padding: 22px;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s;
  position: relative;
  overflow: hidden;
}
.assign-card-new:hover {
  transform: translateY(-4px);
}
.assign-status-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.assign-type-badge { font-size: 0.65rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); }
.assign-status-badge { font-size: 0.72rem; font-weight: 800; }
.assign-title { font-weight: 900; font-size: 1rem; color: var(--blue-dark); line-height: 1.3; margin-bottom: 8px; }
.assign-desc  { font-size: 0.83rem; color: var(--stone-400); line-height: 1.6; margin-bottom: 14px; }
.assign-btn { width: 100%; text-align: center; border-radius: 100px; padding: 11px; font-size: 0.88rem; font-weight: 800; border: none; cursor: pointer; transition: opacity 0.15s; }
.assign-btn:hover { opacity: 0.85; }

/* Mobile adjustments for home */
@media (max-width: 480px) {
  .home-hero { padding: 22px 20px 26px; border-radius: 22px; }
  .home-name  { font-size: 1.5rem; }
  .home-stats-row { gap: 8px; }
  .home-stat-card { padding: 14px 12px; border-radius: 16px; }
  .home-stat-val  { font-size: 1.6rem; }
  .home-stat-icon-bg { font-size: 1.8rem; }
}

/* ─── Утилиты ─────────────────────────────────────────────────────────────── */
.flex   { display: flex; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.mt-4   { margin-top: 4px; }
.mt-8   { margin-top: 8px; }
.mt-16  { margin-top: 16px; }
.mt-24  { margin-top: 24px; }
.mb-16  { margin-bottom: 16px; }
.text-muted  { color: var(--stone-400); }
.text-sm     { font-size: 0.85rem; }
.font-bold   { font-weight: 700; }
.truncate    { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-center { text-align: center; }

/* ─── 🎨 Маркерные подчёркивания ─────────────────────────────────────────── */
.mark-pink {
  background: linear-gradient(transparent 55%, rgba(249,168,212,0.55) 45%);
  padding: 0 2px;
}
.mark-blue {
  background: linear-gradient(transparent 55%, rgba(147,197,253,0.55) 45%);
  padding: 0 2px;
}
.mark-yellow {
  background: linear-gradient(transparent 55%, rgba(253,224,71,0.55) 45%);
  padding: 0 2px;
}
.mark-green {
  background: linear-gradient(transparent 55%, rgba(134,239,172,0.55) 45%);
  padding: 0 2px;
}

/* Слово/фраза в кружке (как на референсе) */
.pill-outline {
  display: inline-block;
  border: 2.5px solid var(--pink);
  border-radius: 100px;
  padding: 2px 14px;
  color: var(--pink-dark);
  font-weight: 800;
  white-space: nowrap;
}
.pill-outline-blue {
  display: inline-block;
  border: 2.5px solid var(--blue);
  border-radius: 100px;
  padding: 2px 14px;
  color: var(--blue-mid);
  font-weight: 800;
  white-space: nowrap;
}

/* ─── 🌸 Декоративные плавающие шарики ────────────────────────────────────── */
.deco-blob {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 0;
  animation: blobFloat 18s infinite ease-in-out;
}

/* ─── 📌 Карточки «заметки» с булавкой (референс-стиль) ──────────────────── */
.note-card {
  background: white;
  border: 2px solid var(--blue-soft);
  border-radius: 20px;
  padding: 22px 24px;
  position: relative;
  box-shadow: 0 4px 20px rgba(75,123,245,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}
.note-card:hover { transform: translateY(-3px) rotate(-0.5deg); box-shadow: 0 8px 32px rgba(75,123,245,0.16); }
.note-card-pink {
  border-color: var(--pink-soft);
  box-shadow: 0 4px 20px rgba(244,114,182,0.12);
}
.note-card-pink:hover { box-shadow: 0 8px 32px rgba(244,114,182,0.2); }
.note-card::before {
  content: '📌'; position: absolute; top: -10px; right: 18px; font-size: 1.3rem;
}
.note-card-pink::before { content: '📍'; }

/* ─── 🎀 Уютные секции-баннеры ────────────────────────────────────────────── */
.cozy-banner {
  background: linear-gradient(135deg, var(--blue-light), var(--pink-light));
  border: 2px solid var(--blue-soft);
  border-radius: 24px;
  padding: 24px 28px;
  position: relative;
  overflow: hidden;
}
.cozy-banner-pink {
  background: linear-gradient(135deg, var(--pink-light), #fff7ed);
  border-color: var(--pink-soft);
}

/* ─── Цветные левые полосы у карточек ────────────────────────────────────── */
.card-accent-blue  { border-left: 4px solid var(--blue) !important; }
.card-accent-pink  { border-left: 4px solid var(--pink) !important; }
.card-accent-green { border-left: 4px solid #34d399 !important; }
.card-accent-amber { border-left: 4px solid #f59e0b !important; }

/* ─── Анимация пульса для важных элементов ────────────────────────────────── */
@keyframes pulse-blue {
  0%, 100% { box-shadow: 0 0 0 0 rgba(75,123,245,0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(75,123,245,0); }
}
.pulse-blue { animation: pulse-blue 2s infinite; }

/* ─── 🖼 Улучшенная адаптивность admin/dashboard ─────────────────────────── */
/* ─── Sort question ──────────────────────────────────────────────────────── */
.av-sort-pool {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border: 1.5px dashed var(--blue-soft);
  border-radius: 14px;
  min-height: 52px;
  transition: background 0.15s, border-color 0.15s;
}
.av-sort-pool.dragover {
  background: var(--blue-light);
  border-color: var(--blue);
}
.av-sort-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.84rem;
  font-weight: 700;
  background: white;
  border: 1.5px solid var(--blue-soft);
  color: var(--blue-dark);
  cursor: grab;
  user-select: none;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.1s;
}
.av-sort-chip:hover { background: var(--blue-light); border-color: var(--blue); }
.av-sort-chip.av-sort-selected {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(75,123,245,0.3);
}
.av-sort-chip.av-sort-dragging { opacity: 0.35; cursor: grabbing; }
.av-sort-chip.av-sort-chip-ok { background: #dcfce7; border-color: #86efac; color: #16a34a; cursor: default; }
.av-sort-chip.av-sort-chip-err { background: #fee2e2; border-color: #fca5a5; color: #dc2626; cursor: default; }
.av-sort-baskets { display: flex; gap: 12px; flex-wrap: wrap; }
.av-sort-basket {
  flex: 1;
  min-width: 140px;
  border: 1.5px solid var(--blue-soft);
  border-radius: 14px;
  padding: 12px;
  background: var(--stone-50);
  transition: background 0.15s, border-color 0.15s;
  cursor: pointer;
}
.av-sort-basket.dragover { background: var(--blue-light); border-color: var(--blue); border-style: dashed; }
.av-sort-basket-done { cursor: default; }
.av-sort-basket-label { font-size: 0.75rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.07em; color: var(--stone-400); margin-bottom: 8px; }
.av-sort-basket-items { display: flex; flex-wrap: wrap; gap: 6px; min-height: 32px; }

@media (max-width: 768px) {
  .page-title { font-size: 1.6rem; }
  .stat-value { font-size: 2rem; }
  .modal-box  { padding: 24px 20px; border-radius: 28px; }
  .card       { padding: 20px; }
  th, td      { padding: 12px 14px; font-size: 0.82rem; }
}
@media (max-width: 480px) {
  .page-title  { font-size: 1.4rem; }
  .stat-value  { font-size: 1.8rem; }
  .btn         { font-size: 0.88rem; padding: 12px 18px; }
  .modal-box   { border-radius: 24px; padding: 20px 16px; }
  .table-wrap  { border-radius: 20px; }
  th, td       { padding: 10px 12px; font-size: 0.78rem; }
  .section-toolbar { gap: 8px; }
  .filter-pill { padding: 5px 12px; font-size: 0.73rem; }
}

/* ── Группы домашних заданий ─────────────────────────────────────────────── */
.assign-group {
  background: white;
  border: 1.5px solid var(--stone-200);
  border-radius: 22px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.18s;
}
.assign-group:hover { box-shadow: 0 4px 24px rgba(75,123,245,0.08); }

/* Заголовок группы */
.ag-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  cursor: pointer;
  user-select: none;
  flex-wrap: wrap;
}
.ag-header:hover { background: var(--stone-50); }
.ag-header-left  { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.ag-header-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.ag-folder-icon  { font-size: 1.5rem; flex-shrink: 0; }
.ag-group-title  { font-weight: 900; font-size: 1.02rem; color: var(--stone-900); line-height: 1.3; }
.ag-group-sub    { font-size: 0.78rem; color: var(--stone-400); margin-top: 2px; }
.ag-toggle-arrow { font-size: 1rem; color: var(--stone-400); transition: transform 0.2s; flex-shrink: 0; }
.assign-group.ag-collapsed .ag-toggle-arrow { transform: rotate(-90deg); }

/* Прогресс в заголовке */
.ag-progress-wrap { display: flex; align-items: center; gap: 8px; }
.ag-progress      { width: 80px; height: 6px; background: var(--stone-100); border-radius: 100px; overflow: hidden; }
.ag-progress-bar  { height: 100%; background: linear-gradient(90deg, var(--blue), #7c3aed); border-radius: 100px; transition: width 0.4s; }
.ag-progress-label{ font-size: 0.72rem; font-weight: 700; color: var(--stone-400); white-space: nowrap; }

/* Кнопка теории */
.ag-theory-btn { white-space: nowrap; }

/* Тело группы */
.ag-body { padding: 0 16px 16px; }
.assign-group.ag-collapsed .ag-body { display: none; }
.ag-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }

/* Карточка ДЗ внутри группы */
.ag-card {
  background: var(--stone-50);
  border: 1.5px solid var(--stone-200);
  border-radius: 18px;
  padding: 16px 18px;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s;
}
.ag-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(75,123,245,0.12); }
.ag-card-top  { display: flex; gap: 12px; align-items: flex-start; }
.ag-card-badges { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 6px; }
.ag-kind-badge  { font-size: 0.65rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; padding: 3px 8px; border-radius: 100px; }
.ag-card-title  { font-weight: 800; font-size: 0.94rem; color: var(--stone-900); line-height: 1.3; margin-bottom: 4px; }
.ag-card-desc   { font-size: 0.78rem; color: var(--stone-400); line-height: 1.5; }
.ag-card-status { text-align: center; font-size: 1.2rem; flex-shrink: 0; }
.ag-card-status span { display: block; font-size: 0.62rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.04em; margin-top: 2px; }
.ag-card-foot   { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; gap: 8px; }
.ag-open-btn    { background: var(--blue); color: white; border: none; border-radius: 100px; padding: 8px 14px; font-size: 0.78rem; font-weight: 800; cursor: pointer; white-space: nowrap; transition: opacity 0.15s; }
.ag-open-btn:hover { opacity: 0.85; }
.ag-feedback    { margin-top: 10px; padding: 8px 12px; background: var(--blue-light); border-radius: 10px; font-size: 0.75rem; color: var(--blue-dark); }

@media (max-width: 600px) {
  .ag-header     { padding: 14px 16px; }
  .ag-body       { padding: 0 10px 12px; }
  .ag-cards      { grid-template-columns: 1fr; }
  .ag-progress   { width: 56px; }
  .ag-header-right { gap: 8px; }
  .ag-theory-btn { display: none; }  /* на мобиле теория открывается через урок */
}