/* ============================================================
   Layout: header, sidebar, bottom-nav, drawer, page container
   ============================================================ */

.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  background: var(--bg);
  box-sizing: border-box;
}

/* --- Header --- */
.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 0 var(--s-5);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top, 0);
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  color: var(--text);
  text-decoration: none;
  min-width: 0;
}

.app-header__logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: var(--fw-bold);
  flex-shrink: 0;
  overflow: hidden;
}
.app-header__logo img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.app-header__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-header__spacer { flex: 1; }

.app-header__actions {
  display: flex;
  align-items: center;
  gap: var(--s-1);
}

.icon-btn {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background var(--t-fast), color var(--t-fast);
}

.icon-btn:hover { background: var(--bg-hover); color: var(--text); }
.icon-btn:active { transform: scale(0.95); }

/* Подсказки при наведении на иконочные кнопки */
.icon-btn[data-tooltip]::after,
.feed-icon-btn[data-tooltip]::after,
.ai-hdr-btn[data-tooltip]::after,
.tab[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%) translateY(4px);
  padding: 6px 10px;
  border-radius: 8px;
  background: #1A1A1A;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity .12s ease, transform .12s ease, visibility .12s ease;
  z-index: 40;
  box-shadow: 0 8px 20px rgba(0,0,0,.28);
}
.icon-btn[data-tooltip]::before,
.feed-icon-btn[data-tooltip]::before,
.ai-hdr-btn[data-tooltip]::before,
.tab[data-tooltip]::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: calc(100% + 2px);
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1A1A1A;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity .12s ease, visibility .12s ease;
  z-index: 40;
}
.icon-btn[data-tooltip]:hover::after,
.icon-btn[data-tooltip]:focus-visible::after,
.feed-icon-btn[data-tooltip]:hover::after,
.feed-icon-btn[data-tooltip]:focus-visible::after,
.ai-hdr-btn[data-tooltip]:hover::after,
.ai-hdr-btn[data-tooltip]:focus-visible::after,
.tab[data-tooltip]:hover::after,
.tab[data-tooltip]:focus-visible::after,
.icon-btn[data-tooltip]:hover::before,
.icon-btn[data-tooltip]:focus-visible::before,
.feed-icon-btn[data-tooltip]:hover::before,
.feed-icon-btn[data-tooltip]:focus-visible::before,
.ai-hdr-btn[data-tooltip]:hover::before,
.ai-hdr-btn[data-tooltip]:focus-visible::before,
.tab[data-tooltip]:hover::before,
.tab[data-tooltip]:focus-visible::before {
  opacity: 1;
  visibility: visible;
}
.icon-btn[data-tooltip]:hover::after,
.icon-btn[data-tooltip]:focus-visible::after,
.feed-icon-btn[data-tooltip]:hover::after,
.feed-icon-btn[data-tooltip]:focus-visible::after,
.ai-hdr-btn[data-tooltip]:hover::after,
.ai-hdr-btn[data-tooltip]:focus-visible::after,
.tab[data-tooltip]:hover::after,
.tab[data-tooltip]:focus-visible::after {
  transform: translateX(-50%) translateY(0);
}
[data-theme="dark"] .icon-btn[data-tooltip]::after,
[data-theme="dark"] .feed-icon-btn[data-tooltip]::after,
[data-theme="dark"] .ai-hdr-btn[data-tooltip]::after,
[data-theme="dark"] .tab[data-tooltip]::after {
  background: #2A2A2A;
  color: #F0EDE8;
  border: 1px solid #4A4A4A;
}
[data-theme="dark"] .icon-btn[data-tooltip]::before,
[data-theme="dark"] .feed-icon-btn[data-tooltip]::before,
[data-theme="dark"] .ai-hdr-btn[data-tooltip]::before,
[data-theme="dark"] .tab[data-tooltip]::before {
  border-top-color: #2A2A2A;
}

.icon-btn__badge {
  position: absolute;
  top: 6px;
  right: 6px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background: var(--danger);
  color: white;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--fw-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.avatar-btn { padding: 0; overflow: hidden; }
.avatar-btn .avatar { pointer-events: none; }

.avatar-menu {
  position: fixed;
  z-index: 1200;
  min-width: 200px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  display: flex;
  flex-direction: column;
}
.avatar-menu__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  background: transparent;
  border: 0;
  font: inherit;
  cursor: pointer;
  text-align: left;
}
.avatar-menu__item:hover { background: var(--bg-hover); }
.avatar-menu__item--danger { color: var(--danger); }
.avatar-menu__item .fas { width: 18px; color: var(--primary); }
.avatar-menu__item--danger .fas { color: var(--danger); }

/* --- Main --- */
.app-main {
  flex: 1;
  padding: var(--s-5);
  padding-bottom: calc(var(--bottom-nav-h) + var(--s-6) + env(safe-area-inset-bottom, 0));
  max-width: none;
  margin: 0;
  width: 100%;
  box-sizing: border-box;
}

.app-main--narrow { max-width: 480px; margin-left: auto; margin-right: auto; }
.app-main--wide { max-width: none; }

/* --- Page header --- */
.page-head {
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
}

.page-head__back {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  flex-shrink: 0;
  margin-top: 2px;
}

.page-head__back:hover { background: var(--bg-hover); color: var(--text); }

.page-head__text {
  flex: 1;
  min-width: 0;
}

.page-head__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.page-head__title > .fas,
.page-head__title > .fab {
  color: var(--primary);
  flex-shrink: 0;
  font-size: 0.92em;
  width: 1.15em;
  text-align: center;
}

.page-head__title-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-head__subtitle {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: 2px;
  line-height: var(--lh-base);
}

.page-head__spacer { flex: 1; }

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--s-1);
  flex-shrink: 0;
  margin-left: auto;
}

/* --- Greeting --- */
.greeting {
  margin-bottom: var(--s-5);
}

.greeting__hello {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  margin-bottom: var(--s-1);
}

.greeting__sub {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
}

/* --- Section --- */
.section {
  margin-bottom: var(--s-6);
}

.section__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--s-3);
  gap: var(--s-3);
}

.section__head-text {
  flex: 1;
  min-width: 0;
}

.section__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.section__title > .fas,
.section__title > .fab {
  color: var(--primary);
  flex-shrink: 0;
  font-size: 0.95em;
  width: 1.1em;
  text-align: center;
}

.section__subtitle {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: 2px;
  line-height: var(--lh-base);
}

.section__link {
  font-size: var(--fs-sm);
  color: var(--primary);
  font-weight: var(--fw-medium);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- Grid --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-3);
}

.stack { display: flex; flex-direction: column; gap: var(--s-3); }
.stack--sm { gap: var(--s-2); }
.stack--lg { gap: var(--s-5); }
.row-flex { display: flex; gap: var(--s-3); align-items: center; }

/* --- Bottom navigation (mobile) --- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: calc(var(--bottom-nav-h) + env(safe-area-inset-bottom, 0));
  padding-bottom: env(safe-area-inset-bottom, 0);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: center;
  box-shadow: 0 -4px 20px rgba(20, 20, 20, 0.04);
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  height: 100%;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: color var(--t-fast);
  padding: 0 var(--s-1);
}

.bottom-nav__item--active { color: var(--primary); }

.bottom-nav__icon {
  font-size: 20px;
  line-height: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bottom-nav__badge {
  position: absolute;
  top: -6px;
  right: -10px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--accent, #c62828);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
}
.bottom-nav__icon .fas {
  font-size: inherit;
}

.bottom-nav__item--primary .bottom-nav__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: var(--primary-contrast);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: -20px;
  box-shadow: var(--shadow-md);
  font-size: 20px;
  border: 3px solid var(--bg);
}

.bottom-nav__item--primary .bottom-nav__label {
  margin-top: 2px;
  color: var(--primary);
  font-weight: var(--fw-semibold);
}

/* --- Sidebar (desktop sticky / mobile drawer) --- */
.sidebar {
  display: none;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-2) 0;
}

.sidebar__logo {
  width: 60px;
  height: 60px;
  border-radius: 0;
  background: transparent;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  overflow: visible;
  flex-shrink: 0;
}
.sidebar__logo img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 0;
}

.sidebar__name {
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  line-height: var(--lh-tight);
  color: var(--text);
}

.sidebar__user {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}

.sidebar__link:hover { background: var(--bg-hover); color: var(--text); }

.sidebar__link--active {
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: var(--fw-semibold);
}

.sidebar__link-icon {
  width: 24px;
  text-align: center;
  font-size: var(--fs-md);
  color: var(--primary);
  opacity: 0.85;
}
.sidebar__link--active .sidebar__link-icon { opacity: 1; }

.sidebar__section {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: var(--s-4) 0 var(--s-2);
  padding-left: var(--s-3);
}

.sidebar__close {
  display: none;
  margin-left: auto;
}

.drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.drawer-backdrop.is-open {
  display: block;
  opacity: 1;
  pointer-events: auto;
}

/* Mobile: sidebar as right drawer */
@media (max-width: 899px) {
  .sidebar {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 88vw);
    z-index: var(--z-drawer);
    padding: var(--s-5);
    padding-top: calc(var(--s-5) + env(safe-area-inset-top, 0));
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    gap: var(--s-4);
    overflow-y: auto;
    transform: translateX(105%);
    transition: transform 0.25s ease;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.14);
  }
  .sidebar.is-drawer-open {
    transform: translateX(0);
  }
  .sidebar__close {
    display: inline-flex;
  }
  #menuBtn { display: inline-flex !important; }
}

@media (min-width: 900px) {
  .app {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-rows: 1fr;
    min-height: 100dvh;
  }

  .bottom-nav { display: none; }

  .app-header { display: none; }

  .app-main {
    grid-column: 2;
    grid-row: 1;
    padding-bottom: var(--s-8);
    max-width: none;
    margin: 0;
    width: 100%;
  }

  .drawer-backdrop { display: none !important; }
  #menuBtn { display: none !important; }

  .sidebar {
    display: flex;
    flex-direction: column;
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 0;
    align-self: start;
    height: 100dvh;
    width: var(--sidebar-w);
    padding: var(--s-5);
    background: var(--bg-elevated);
    border-right: 1px solid var(--border);
    z-index: var(--z-sticky);
    gap: var(--s-6);
    overflow-y: auto;
    transform: none;
    box-shadow: none;
  }
  .sidebar__close { display: none !important; }

}

/* --- SPA content swap --- */
.app-main {
  transition: opacity .15s ease;
}
.app-main.is-spa-loading {
  opacity: 0.55;
  pointer-events: none;
}

/* --- Bottom safe area --- */
.safe-bottom { padding-bottom: env(safe-area-inset-bottom, 0); }

/* --- Animations --- */
.fade-in { animation: fade-in var(--t-base); }
.slide-in { animation: slide-up var(--t-spring); }


/* RU/ENG locale switcher (header + drawer) */
.locale-switcher-host { display: inline-flex; align-items: center; flex-shrink: 0; }
.locale-switcher {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 2px; border: 1px solid var(--border, #e5e7eb);
  border-radius: 8px; background: var(--bg-elevated, #fff);
}
.locale-switcher .locale-btn {
  appearance: none; border: 0; background: transparent;
  color: var(--text-secondary, #6b7280);
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
  padding: 6px 8px; border-radius: 6px; cursor: pointer; line-height: 1;
}
.locale-switcher .locale-btn:hover { color: var(--primary, #3F6B56); }
.locale-switcher .locale-btn.active {
  background: color-mix(in srgb, var(--primary, #3F6B56) 14%, transparent);
  color: var(--primary, #3F6B56);
}
.page-actions .locale-switcher-host { margin-right: 4px; }

/* single-header-locale */
.sidebar__locale, #clientLocaleSwitcher { display: none !important; }