/* ── App Shell (Instagram-style) ── */
.f-app {
  display: flex; height: 100vh;
  background: var(--bg-app);
  overflow: hidden; font-family: var(--font); position: relative;
}

/* ── Overlay (mobile sidebar backdrop) ── */
.f-overlay {
  position: fixed; inset: 0; background: var(--bg-overlay);
  z-index: 40; opacity: 0; pointer-events: none; transition: opacity .32s;
}
.f-overlay.show { opacity: 1; pointer-events: all; }

/* ── Main Column ── */
.f-main {
  flex: 1; display: flex; flex-direction: column;
  min-width: 0; height: 100vh; overflow: hidden;
}

/* ── Topbar (mobile only; desktop uses the nav sidebar) ── */
.f-topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  position: sticky; top: 0; z-index: 10;
}
.f-menu-btn {
  background: none; border: none; cursor: pointer;
  padding: 6px; border-radius: 8px; transition: background .15s;
  flex-shrink: 0; line-height: 0; width: 32px;
  color: var(--text-primary);
}
.f-menu-btn:hover { background: var(--hover-bg); }
.f-topbar-center { flex: 1; display: flex; justify-content: center; min-width: 0; }
.f-topbar-wordmark {
  color: var(--text-primary); font-weight: 900; font-size: 1.05rem;
  letter-spacing: -.4px; white-space: nowrap; margin-left: 2px;
}
.f-topbar-spacer { width: 32px; flex-shrink: 0; }

/* ── Topbar Profile ── */
.f-topbar-profile {
  width: 32px; height: 32px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border-radius: 50%;
  transition: background .15s;
}
.f-topbar-profile:hover { background: var(--hover-bg); }
.f-topbar-profile .f-profile-avatar {
  width: 28px; height: 28px; border-width: 1.5px;
}
.f-topbar-profile .f-profile-avatar-placeholder {
  width: 28px; height: 28px; font-size: 1rem;
}
.f-topbar-login-icon { font-size: 1.1rem; line-height: 1; }

/* ── Search Bar ── */
.f-search-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.f-search-icon {
  width: 18px; height: 18px; flex-shrink: 0;
  color: var(--muted);
}

.f-search-input {
  flex: 1; min-width: 0;
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 18px;
  font-family: var(--font); font-size: 0.9rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.f-search-input::placeholder { color: var(--muted); }
.f-search-input:focus {
  border-color: var(--border);
  background: var(--bg-surface);
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
}

.f-search-clear {
  background: none; border: none; cursor: pointer;
  color: var(--muted); padding: 4px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: color .15s, background .15s;
}
.f-search-clear:hover { color: var(--text-primary); background: var(--hover-bg); }

/* ── Filter Bar ── */
.f-filter-bar {
  display: flex; gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  justify-content: center;
}

.f-filter-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 999px;
  font-family: var(--font); font-size: 0.85rem; font-weight: 600;
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--muted); cursor: pointer;
  transition: all 0.2s ease;
}
.f-filter-btn:hover {
  background: var(--hover-bg); color: var(--text-primary);
}
.f-filter-btn.active {
  background: rgba(var(--teal-rgb), .08);
  border-color: rgba(var(--teal-rgb), .5);
  color: var(--teal); font-weight: 700;
}

/* ── City Multiselect ── */
.f-city-filter-wrap {
  position: relative; z-index: 20;
  display: flex; align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.f-city-multiselect {
  position: relative; flex: 1;
  width: 100%; max-width: 440px; margin: 0 auto;
}

.f-city-ms-control {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  min-height: 42px;
  cursor: text;
  transition: border-color .2s, box-shadow .2s;
}
.f-city-ms-control.open {
  border-color: rgba(var(--teal-rgb), .5);
  box-shadow: 0 0 0 3px rgba(var(--teal-rgb), .12);
}

.f-city-ms-icon {
  width: 18px; height: 18px; flex-shrink: 0; color: var(--muted);
}

.f-city-ms-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  flex: 1; min-width: 0; align-items: center;
}

.f-city-ms-tag {
  display: inline-flex; align-items: center; gap: 4px;
  background: rgba(var(--teal-rgb), .1);
  border: 1px solid rgba(var(--teal-rgb), .35);
  color: var(--teal);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 0.78rem; font-weight: 600;
  white-space: nowrap;
}
.f-city-ms-tag-remove {
  background: none; border: none; color: inherit; cursor: pointer;
  padding: 0; display: flex; align-items: center; line-height: 0;
  opacity: .7; transition: opacity .15s;
}
.f-city-ms-tag-remove:hover { opacity: 1; }

.f-city-ms-input {
  flex: 1; min-width: 90px;
  border: none; outline: none; background: transparent;
  color: var(--text-primary);
  font-family: var(--font); font-size: 0.9rem;
  padding: 2px 0;
}
.f-city-ms-input::placeholder { color: var(--muted); }

.f-city-ms-clear {
  background: none; border: none; cursor: pointer;
  color: var(--muted); padding: 4px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: color .15s, background .15s;
}
.f-city-ms-clear:hover { color: var(--text-primary); background: var(--hover-bg); }

.f-city-ms-chevron {
  width: 16px; height: 16px; flex-shrink: 0; color: var(--muted);
  transition: transform .2s;
}
.f-city-ms-control.open .f-city-ms-chevron { transform: rotate(180deg); }

.f-city-ms-dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--bg-surface-solid);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, .18);
  max-height: 260px; overflow-y: auto;
  z-index: 30; padding: 6px;
}
.f-city-ms-dropdown::-webkit-scrollbar { width: 4px; }
.f-city-ms-dropdown::-webkit-scrollbar-track { background: transparent; }
.f-city-ms-dropdown::-webkit-scrollbar-thumb { background: var(--muted2); border-radius: 2px; }

.f-city-ms-option {
  display: flex; align-items: center; gap: 10px;
  width: 100%; text-align: left;
  padding: 9px 10px; border: none; border-radius: 8px;
  background: none; color: var(--text-primary);
  font-family: var(--font); font-size: 0.9rem; cursor: pointer;
  transition: background .15s;
}
.f-city-ms-option:hover { background: var(--hover-bg); }
.f-city-ms-option.selected { color: var(--teal); font-weight: 600; }
.f-city-ms-option.f-city-ms-add { color: var(--teal); font-weight: 600; }

.f-city-ms-check {
  width: 18px; height: 18px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--border); border-radius: 5px;
  font-size: 0.8rem; color: var(--teal);
}
.f-city-ms-option.selected .f-city-ms-check {
  border-color: var(--teal);
  background: rgba(var(--teal-rgb), .12);
}
.f-city-ms-option.f-city-ms-add .f-city-ms-check {
  border-color: rgba(var(--teal-rgb), .5);
}

.f-city-ms-empty {
  padding: 10px; text-align: center; color: var(--muted); font-size: 0.85rem;
}

/* ── Bottom Navigation (Instagram-style) ── */
.f-bottom-nav {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; justify-content: space-around;
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  background: var(--bg-surface-solid);
  border-top: 1px solid var(--border);
  z-index: 35;
}
.f-bn-item {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: none; background: none; cursor: pointer;
  color: var(--text-primary);
  transition: color .15s, transform .1s;
}
.f-bn-item:active { transform: scale(.92); }
.f-bn-item svg { width: 26px; height: 26px; }
.f-bn-item.active { color: var(--teal); }
.f-bn-item.active::before {
  content: ""; position: absolute; inset: 3px;
  border-radius: 50%;
  background: rgba(var(--teal-rgb), .12);
}

/* Create button — бирюзовая рамка как у старой кнопки «Разместить» */
.f-bn-create {
  width: 44px; height: 44px;
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  box-shadow: 0 2px 10px rgba(var(--teal-rgb), .35);
}
.f-bn-create:hover { background: var(--teal2); }
.f-bn-create svg { color: #fff; }

/* Profile avatar inside the nav */
.f-bn-profile .f-profile-avatar,
.f-bn-profile .f-profile-avatar-placeholder {
  width: 28px; height: 28px;
}
.f-bn-profile .f-profile-avatar-placeholder { font-size: 1rem; }
.f-bn-item.f-bn-profile.active::before {
  inset: -1px;
  box-shadow: 0 0 0 2px var(--teal);
}

/* Indicator: активные фильтры поиска */
.f-bn-dot {
  position: absolute; top: 6px; right: 4px;
  width: 8px; height: 8px; border-radius: 50%;
  background: #ff3040;
  box-shadow: 0 0 0 2px var(--bg-surface-solid);
}

/* Search panel — видна только во вкладке «Поиск» (на десктопе всегда) */
.f-search-panel { display: none; }
.f-app.f-search-view .f-search-panel { display: block; }

/* ── Feed Wrap + Scroll ── */
.f-wrap { display: flex; flex: 1; overflow: hidden; min-height: 0; }

.f-feed {
  flex: 1; overflow-y: scroll; overscroll-behavior: contain; min-height: 0;
  padding: 20px 16px; display: flex; flex-direction: column; gap: 16px;
  width: 100%; max-width: 660px; margin: 0 auto;
}
.f-feed::-webkit-scrollbar { width: 4px; }
.f-feed::-webkit-scrollbar-track { background: transparent; }
.f-feed::-webkit-scrollbar-thumb { background: var(--muted2); border-radius: 2px; }

@media (min-width: 900px) {
  .f-main-feed .f-topbar {
    display: none;
  }
  .f-search-panel {
    display: block;
  }
  .f-bottom-nav {
    display: none;
  }
}

@media (max-width: 900px) {
  .f-feed {
    padding: 10px;
    gap: 12px;
  }

  .f-topbar {
    padding: 8px 12px;
  }

  .f-post-btn {
    padding: 8px 14px;
    font-size: 0.78rem;
  }

  .f-login-btn {
    padding: 6px 14px;
    font-size: 0.78rem;
  }

  .f-filter-bar {
    padding: 8px 12px;
    gap: 6px;
  }
  .f-filter-btn {
    padding: 7px 13px;
    font-size: 0.82rem;
  }

  .f-city-filter-wrap { padding: 8px 12px; }
  .f-city-ms-control { padding: 5px 12px; min-height: 38px; }
  .f-city-ms-input { font-size: 0.85rem; }
  .f-city-ms-tag { font-size: 0.75rem; padding: 2px 8px; }

  /* Нижняя панель fixed — освобождаем место в конце ленты */
  .f-feed {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 600px) {
  .f-post-btn {
    padding: 7px 10px;
    font-size: 0.7rem;
    gap: 4px;
    border-radius: 8px;
  }

  .f-post-btn span {
    width: 12px;
    height: 12px;
    font-size: 0.7rem;
  }

  .f-login-btn {
    padding: 4px 10px;
    font-size: 0.7rem;
    border-radius: 8px;
  }

  .f-filter-btn {
    padding: 7px 12px;
    font-size: 0.78rem;
  }
}