/* ── Topbar ── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 12px rgba(14, 25, 52, 0.08);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 0 18px 0 12px;
  z-index: 1000;
}

/* Purple accent strip on top */
.topbar::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-purple) 0%, #9b6fe0 60%, var(--brand-yellow) 100%);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-row .brand-logo {
  height: 40px;
  width: auto;
}

/* ── Top nav links ── */
.top-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.top-link {
  border-radius: 8px;
  color: var(--text-muted);
  padding: 6px 12px;
  border: 1px solid transparent;
  font-size: 0.87rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.top-link.active,
.top-link:hover {
  text-decoration: none;
  color: var(--brand-purple);
  background: var(--brand-purple-light);
  border-color: #ddd0f5;
}

.top-link.active {
  font-weight: 700;
}

/* ── Top actions ── */
.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  position: relative;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-muted);
  transition: background 0.15s, border-color 0.15s;
}

.icon-btn:hover {
  background: var(--brand-purple-light);
  border-color: #cdb8f0;
  color: var(--brand-purple);
}

.icon-btn .dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--danger);
  border: 2px solid #fff;
}

.profile-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px 4px 4px;
  background: var(--surface);
  transition: background 0.15s, border-color 0.15s;
}

.profile-toggle:hover {
  background: var(--brand-purple-light);
  border-color: #cdb8f0;
}

.avatar {
  width: 30px; height: 30px;
  border-radius: 999px;
  background: linear-gradient(140deg, var(--brand-purple), #9561d4);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: #ffffff;
  border-right: 1px solid var(--line);
  padding: 12px 10px 20px;
  overflow-y: auto;
  overflow-x: hidden;
  transition: width 0.22s ease;
  z-index: 920;
}

.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar .toggle-row {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 8px;
}

.sidebar-title {
  margin: 14px 6px 4px;
  color: #a0aac0;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav-list { display: grid; gap: 2px; }

.nav-link {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 10px;
  border-radius: 10px;
  padding: 9px 8px;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  border-left: 3px solid transparent;
}

.nav-link:hover {
  text-decoration: none;
  color: var(--brand-purple);
  background: var(--brand-purple-light);
}

.nav-link.active {
  text-decoration: none;
  color: var(--brand-purple);
  background: var(--brand-purple-light);
  font-weight: 700;
  border-left-color: var(--brand-purple);
}

.nav-link .icon {
  width: 22px;
  text-align: center;
  font-size: 1rem;
}

.nav-link .label { font-size: 0.87rem; }

/* Collapsed sidebar */
.sidebar.collapsed .nav-link {
  grid-template-columns: 1fr;
  justify-items: center;
  border-left-color: transparent;
}

.sidebar.collapsed .nav-link.active {
  border-left-color: transparent;
  border-bottom: 2px solid var(--brand-purple);
}

.sidebar.collapsed .nav-link .label,
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .toggle-row .label {
  display: none;
}

/* ── Content shell ── */
.content-shell {
  padding-top: calc(var(--topbar-height) + 18px);
  padding-left: calc(var(--sidebar-width) + 18px);
  padding-right: 18px;
  padding-bottom: 20px;
  transition: padding-left 0.22s ease;
  min-height: 100vh;
}

.content-shell.public-mode {
  padding: 0;
}

.content-shell.public-mode .content-area { min-height: 100vh; }
.content-shell.public-mode .app-footer { display: none; }

.content-shell.sidebar-collapsed {
  padding-left: calc(var(--sidebar-collapsed) + 18px);
}

.content-area {
  min-height: calc(100vh - var(--topbar-height) - 52px);
}

.app-footer {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.77rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .topbar { grid-template-columns: auto 1fr auto; padding-right: 10px; }
  .top-links { display: none; }
  .sidebar { width: 80px; }
  .sidebar .nav-link { grid-template-columns: 1fr; justify-items: center; }
  .sidebar .label, .sidebar .sidebar-title, .sidebar .toggle-row .label { display: none; }
  .content-shell, .content-shell.sidebar-collapsed { padding-left: 96px; }
}

@media (max-width: 700px) {
  .profile-toggle .meta { display: none; }
  .sidebar { display: none; }
  .content-shell, .content-shell.sidebar-collapsed {
    padding-left: 12px;
    padding-right: 12px;
  }
  .topbar { padding-left: 8px; }
  .brand-row .brand-logo { height: 36px; }
}