:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-subtle: #f1f5f9;
  --border: #e2e8f0;
  --border-focus: #2563eb;
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --success-bg: #f0fdf4;
  --success-text: #15803d;
  --ru-badge-bg: #eff6ff;
  --ru-badge-text: #1d4ed8;
  --en-badge-bg: #f0fdf4;
  --en-badge-text: #15803d;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Шапка */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.navbar-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-main);
  text-decoration: none;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-pill {
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--surface-subtle);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

/* Основной контейнер */
.container {
  max-width: 980px;
  margin: 28px auto 60px;
  padding: 0 20px;
}

/* Авторизация */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-md);
}

.auth-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--surface-subtle);
  color: var(--text-main);
}

.btn-danger-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 4px 8px;
  font-size: 0.8rem;
}

.btn-danger-ghost:hover {
  background: var(--danger-bg);
  color: var(--danger);
}

.btn-block {
  width: 100%;
}

/* Поля форм */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 6px;
}

.input,
.textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-main);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus,
.textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Уведомления */
.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 18px;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

.alert-success {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid #bbf7d0;
}

/* Панель поиска и фильтров */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.search-form {
  position: relative;
  flex: 1;
  min-width: 250px;
  display: flex;
  gap: 8px;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-input {
  width: 100%;
  padding: 10px 34px 10px 36px;
  font-size: 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.15rem;
  line-height: 1;
  text-decoration: none;
}

.lang-tabs {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 3px;
}

.lang-tab {
  border: none;
  background: transparent;
  padding: 6px 12px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.lang-tab.active {
  background: var(--primary);
  color: #ffffff;
}

.meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

/* Список карточек Вопрос/Ответ */
.qa-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.qa-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.qa-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--surface-subtle);
}

.qa-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.qa-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.qa-grid.single-col {
  grid-template-columns: 1fr;
}

.qa-lang-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.lang-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.lang-badge.ru {
  background: var(--ru-badge-bg);
  color: var(--ru-badge-text);
}

.lang-badge.en {
  background: var(--en-badge-bg);
  color: var(--en-badge-text);
}

.qa-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  margin-bottom: 3px;
  font-weight: 600;
}

.qa-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  white-space: pre-wrap;
}

.qa-answer {
  font-size: 0.93rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
}

mark {
  background-color: #fef08a;
  color: var(--text-main);
  padding: 0 2px;
  border-radius: 2px;
}

/* Страница добавления */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.page-title {
  font-size: 1.35rem;
  font-weight: 600;
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.bilingual-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

.lang-column {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px;
}

.lang-column-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-weight: 600;
  font-size: 0.95rem;
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.empty-state {
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 48px 20px;
  color: var(--text-secondary);
}

.empty-state h3 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

@media (max-width: 720px) {
  .qa-grid,
  .bilingual-form-grid {
    grid-template-columns: 1fr;
  }
  .navbar-inner {
    flex-wrap: wrap;
  }
}