/* Navigation Component Styles: Sidebar & Topbar */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  padding: 16px 14px 20px;
  z-index: 80;
  transition: transform 240ms var(--ease);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 18px;
  text-decoration: none;
}
.brand-mark {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: white;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--accent-glow);
  flex-shrink: 0;
}
.brand-mark svg {
  width: 20px;
  height: 20px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.brand-name {
  font-size: 15.5px;
  font-weight: 750;
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  color: #ffffff;
  line-height: 1.15;
}
.brand-description {
  font-size: 11px;
  color: #94a3b8;
  font-weight: 500;
  line-height: 1.15;
  white-space: nowrap;
}

.workspace {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 9px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.workspace-logo {
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.workspace-logo svg {
  width: 14px;
  height: 14px;
}
.workspace strong {
  font-size: 13px;
  font-weight: 650;
  color: #ffffff;
  display: block;
  font-family: var(--font-display);
}
.workspace small {
  font-size: 11px;
  color: #94a3b8;
  display: block;
}

.nav-label {
  font-size: 10.5px;
  font-weight: 700;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  color: #64748b;
  padding: 0 10px 8px;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: relative;
  flex: 1;
}
.nav-marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 38px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
  transition: transform 220ms var(--ease);
}
.nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: 8px;
  color: #94a3b8;
  font-size: 13px;
  font-weight: 550;
  transition: all 150ms var(--ease);
  position: relative;
}
.nav a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}
.nav a.active {
  color: #ffffff;
  background: rgba(37, 99, 235, 0.15);
  font-weight: 650;
}
.nav a svg {
  width: 16px;
  height: 16px;
}
.nav a .count {
  margin-left: auto;
  background: var(--amber);
  color: #000;
  font-size: 11px;
  font-weight: 750;
  font-family: var(--font-mono);
  padding: 1px 6px;
  border-radius: 10px;
}

.sidebar-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.system-link, .sidebar-session {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  color: #94a3b8;
  font-size: 11.5px;
  border-radius: 6px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
}
.system-link:hover { color: #ffffff; background: rgba(255, 255, 255, 0.04); }
.system-link .dot { background: #22c55e; width: 6px; height: 6px; }
.system-link svg { width: 13px; height: 13px; margin-left: auto; }
.sidebar-session svg { width: 14px; height: 14px; color: #64748b; }

.sidebar .profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  text-align: left;
  margin-top: 4px;
  color: #ffffff;
  transition: background 160ms var(--ease);
}
.sidebar .profile:hover { background: rgba(255, 255, 255, 0.08); }
.sidebar .profile strong {
  font-size: 12.5px;
  display: block;
  font-weight: 650;
  font-family: var(--font-display);
}
.sidebar .profile small {
  font-size: 11px;
  color: #94a3b8;
  display: block;
}
.sidebar .profile svg {
  margin-left: auto;
  width: 14px;
  height: 14px;
  color: #64748b;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  height: 64px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--topbar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 60;
  backdrop-filter: blur(8px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb svg {
  width: 12px;
  height: 12px;
}
.breadcrumb strong {
  font-weight: 650;
  color: var(--ink-heading);
  font-family: var(--font-display);
}

.topbar-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search {
  position: relative;
  display: inline-flex;
  align-items: center;
}
#search-icon,
.search svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--muted);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
#search-icon svg {
  width: 15px;
  height: 15px;
  display: block;
}
.search input {
  height: 36px;
  padding: 0 56px 0 34px;
  border-radius: 8px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--ink);
  font-size: 12.5px;
  width: 220px;
  outline: none;
  transition: all 160ms var(--ease);
  box-sizing: border-box;
}
.search input::-webkit-search-cancel-button,
.search input::-webkit-search-decoration {
  -webkit-appearance: none;
  appearance: none;
}
.search input:focus {
  width: 280px;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.search kbd {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10.5px;
  font-family: var(--font-mono);
  background: var(--line);
  color: var(--muted);
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
  height: 19px;
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.icon-button {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 160ms var(--ease);
  position: relative;
}
.icon-button:hover {
  background: var(--surface-subtle);
  border-color: var(--line-strong);
  color: var(--ink-heading);
}
.icon-button.active {
  background: var(--blue-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.icon-button svg {
  width: 16px;
  height: 16px;
}
.icon-button.notification .unread {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 7px;
  height: 7px;
  background: var(--red);
  border-radius: 50%;
}

.topbar-tools .separator {
  width: 1px;
  height: 20px;
  background: var(--line);
  margin: 0 4px;
}

.avatar-button {
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  border-radius: 50%;
}
.avatar-button:hover .avatar {
  box-shadow: 0 0 0 2px var(--accent);
}

.mobile-menu { display: none; }
.mobile-shade { display: none; }

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .app { margin-left: 0; }
  .mobile-menu { display: flex; }
  .mobile-shade {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 75;
  }
  .topbar { padding: 0 16px; }
  .search input { width: 140px; }
  .search input:focus { width: 180px; }
}