/* ═══════════════════════════════════════════════════════════════
   Store Communications Portal — layout.css
   App shell, sidebar, responsive grid
═══════════════════════════════════════════════════════════════ */

/* ─── App Shell ─────────────────────────────────────────────── */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 1fr;
  min-height: 100vh;
  position: relative;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  background: var(--color-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 200;
  transition: var(--transition-normal);
  flex-shrink: 0;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
}
.sidebar-logo-mark {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.sidebar-logo-sub {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.sidebar-user {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.sidebar-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
  flex-shrink: 0;
}
.sidebar-user-info { min-width: 0; }
.sidebar-user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.55);
  text-transform: capitalize;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  overflow-y: auto;
}
.nav-section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.35);
  padding: 12px 8px 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,0.75);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  position: relative;
  margin-bottom: 2px;
}
.nav-item:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  text-decoration: none;
}
.nav-item.active {
  background: rgba(255,255,255,0.18);
  color: #fff;
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--color-primary-3);
  border-radius: 0 2px 2px 0;
}
.nav-icon { font-size: 1.1rem; width: 20px; text-align: center; flex-shrink: 0; }
.nav-label { flex: 1; }
.nav-badge {
  background: var(--color-danger);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--radius-full);
  min-width: 16px;
  text-align: center;
}

.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}

/* ─── Main Content Area ─────────────────────────────────────── */
.main-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.page-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}
.page-header-left  { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.page-header-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.page-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-body {
  padding: 24px;
  flex: 1;
}

/* ─── Content Grid ──────────────────────────────────────────── */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.content-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.content-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ─── Notification Bell ─────────────────────────────────────── */
.notif-btn {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--color-text-muted);
}
.notif-btn:hover { background: var(--color-bg-2); }
.notif-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}

/* ─── Notification Dropdown ─────────────────────────────────── */
.notif-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 360px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 500;
  overflow: hidden;
  animation: fadeIn 0.18s ease;
}
.notif-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.notif-list { max-height: 360px; overflow-y: auto; }
.notif-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-bg-2);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  gap: 10px;
}
.notif-item:hover { background: var(--color-bg-2); }
.notif-item.unread { background: var(--color-accent); }
.notif-dot-small {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary-2);
  flex-shrink: 0;
  margin-top: 6px;
}
.notif-item-text { font-size: 0.8125rem; line-height: 1.5; }
.notif-item-time { font-size: 0.75rem; color: var(--color-text-muted); margin-top: 2px; }

/* ─── Tablet (≤900px) ───────────────────────────────────────── */
@media (max-width: 900px) {
  .app-shell { grid-template-columns: var(--sidebar-width-tablet) 1fr; }
  .sidebar-logo-sub,
  .sidebar-user-info,
  .nav-label,
  .nav-badge,
  .nav-section-label,
  .sidebar-logo-mark { display: none; }
  .sidebar-logo { padding: 16px 12px; display: flex; justify-content: center; }
  .sidebar-user  { justify-content: center; padding: 12px; }
  .nav-item      { justify-content: center; padding: 12px; }
  .nav-item::before { display: none; }
  .nav-icon { width: auto; font-size: 1.2rem; }
  .content-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .content-grid-2 { grid-template-columns: 1fr; }
}

/* ─── Mobile (≤600px) ───────────────────────────────────────── */
@media (max-width: 600px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }
  .sidebar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--bottom-nav-height);
    flex-direction: row;
    overflow: hidden;
    top: auto;
  }
  .sidebar-logo,
  .sidebar-user,
  .sidebar-footer,
  .nav-section-label { display: none; }
  .sidebar-nav {
    display: flex;
    flex-direction: row;
    padding: 0;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    overflow: hidden;
  }
  .nav-item {
    flex-direction: column;
    gap: 2px;
    padding: 8px 4px;
    border-radius: 0;
    font-size: 0.625rem;
    min-width: 0;
    flex: 1;
  }
  .nav-item.active::before { display: none; }
  .nav-item.active {
    background: transparent;
    color: var(--color-primary-3);
  }
  .nav-label { display: block; font-size: 0.625rem; }
  .nav-icon  { font-size: 1.25rem; }
  .main-content { padding-bottom: var(--bottom-nav-height); }
  .page-body { padding: 16px; }
  .content-grid,
  .content-grid-2,
  .content-grid-3 { grid-template-columns: 1fr; }
  .notif-dropdown { width: calc(100vw - 16px); right: -8px; }
}