/* ═══════════════════════════════════════════
   HQ Layout Styles
   App shell, top bar, tab nav, view container,
   and responsive breakpoints.
   Depends on tokens.css.
   ═══════════════════════════════════════════ */

/* ── App shell ─────────────────────────────── */
.app-shell {
  background: var(--color-bg);
  color: var(--color-text);
  height: 100vh;
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Top bar ───────────────────────────────── */
.top-bar {
  padding: 12px var(--space-6);
  /* Respect iOS notch / status bar on landscape. `env()` falls back to 0
     on browsers without safe-area support, so non-iOS is unaffected. */
  padding-left: max(var(--space-6), env(safe-area-inset-left));
  padding-right: max(var(--space-6), env(safe-area-inset-right));
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-panel);
  flex-shrink: 0;
  /* Fixed height so tab nav and view always anchor correctly */
  min-height: 52px;
}

.top-bar__logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
}

.top-bar__logo-diamond {
  color: var(--color-amber);
}

.top-bar__status {
  font-size: 11px;
  color: var(--color-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.top-bar__spacer {
  flex: 1;
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ── Tab nav ───────────────────────────────── */
.tab-nav {
  display: flex;
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
  flex-shrink: 0;
  overflow-x: auto;
  overflow-y: hidden;
  /* Smooth momentum scrolling on iOS; otherwise the tab nav feels stiff
     compared to native horizontal scrollers. */
  -webkit-overflow-scrolling: touch;
  /* Hide scrollbar on the tab nav itself */
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-nav__tab {
  padding: 11px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid transparent;
  color: var(--color-dim);
  font-size: var(--text-md);
  font-weight: 600;
  margin-bottom: -1px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  user-select: none;
}

.tab-nav__tab:hover {
  color: var(--color-text);
}

.tab-nav__tab.active {
  border-bottom-color: var(--color-amber);
  color: var(--color-amber);
}

.tab-nav__tab-icon {
  font-size: var(--text-md);
}

.tab-nav__tab-badge {
  font-size: 9px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: #E8555533;
  color: var(--color-red);
  font-weight: 700;
  font-family: var(--font-mono);
}

/* ── View container ────────────────────────── */
.view-container {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  /* Each view manages its own internal scroll */
}

/* ── Chat drawer overlay (mobile) ──────────── */
.chat-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
}

.chat-drawer-overlay.open {
  display: block;
}

/* ── Mobile hamburger ──────────────────────── */
.hamburger-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-dim);
  padding: 8px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-xl);
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════
   Responsive: ≤768px
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {
  .top-bar {
    padding: 10px var(--space-4);
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
    gap: var(--space-2);
  }

  .top-bar__status {
    display: none;
  }

  /* Rate meter hogs horizontal space on phone — hide; the user can
     still see rate on Dashboard metrics cards. */
  .top-bar .rate-meter {
    display: none;
  }

  /* Tighten the action buttons on phone — keep 44px tap size but
     remove excess padding. Settings/Logout get icon-only treatment
     via the label-hiding spans below. */
  .top-bar__right {
    gap: 6px;
  }

  .top-bar__right .btn-icon {
    padding: 6px 10px;
    min-height: 40px;
  }

  .top-bar__logo {
    font-size: 18px;
  }

  .tab-nav {
    padding: 0 var(--space-3);
  }

  .tab-nav__tab {
    padding: 10px 12px;
    font-size: 12px;
  }

  .hamburger-btn {
    display: inline-flex;
  }

  /* Dashboard: single column — Chief chat moves below metrics */
  .dashboard-grid {
    grid-template-columns: 1fr !important;
  }

  .dashboard-chief {
    max-height: 420px !important;
  }

  /* Chat: directory becomes slide-out drawer */
  .chat-directory {
    position: fixed !important;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 101;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
  }

  .chat-directory.open {
    transform: translateX(0);
  }

  /* Feed / Tasks: ensure header wraps cleanly */
  .view-header {
    flex-wrap: wrap;
  }

  .filter-group {
    flex-wrap: wrap;
  }
}

/* ═══════════════════════════════════════════
   Responsive: ≤480px
   ═══════════════════════════════════════════ */
@media (max-width: 480px) {
  .top-bar {
    padding: 8px var(--space-3);
    padding-left: max(var(--space-3), env(safe-area-inset-left));
    padding-right: max(var(--space-3), env(safe-area-inset-right));
  }

  .top-bar__logo {
    font-size: 16px;
  }

  /* Alert badge: keep visible but compact the text (counter still shown). */
  .alert-badge {
    padding: 5px 9px;
    font-size: 10px;
  }

  .tab-nav__tab {
    padding: 10px 10px;
    font-size: 11px;
    gap: 4px;
  }

  .tab-nav__tab-label {
    display: none;
  }

  /* On very small screens hide the text, show only icons */
  .tab-nav__tab-icon {
    font-size: 15px;
  }

  /* Keep tap target honest even when the tab is icon-only. */
  .tab-nav__tab {
    min-width: 44px;
    justify-content: center;
  }

  .metric-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .project-grid {
    grid-template-columns: 1fr !important;
  }

  .tasks-grid {
    grid-template-columns: 1fr !important;
  }

  .team-grid {
    grid-template-columns: 1fr !important;
  }
}