/* ==========================================================================
   Layout - Sidebar, Topbar, Content Shell
   ========================================================================== */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar ----------------------------------------------------------------*/
.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: linear-gradient(180deg, #201f4a 0%, #372f8f 60%, var(--color-primary) 100%);
  color: var(--color-text-inverse);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 1030;
  transition: width var(--transition-base);
}

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

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-4);
  min-height: var(--topbar-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar-brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  white-space: nowrap;
  overflow: hidden;
}

.app-shell.sidebar-collapsed .sidebar-brand-name,
.app-shell.sidebar-collapsed .sidebar-nav-text,
.app-shell.sidebar-collapsed .sidebar-user-details {
  display: none;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-2);
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: rgba(255, 255, 255, 0.78);
  padding: 10px var(--space-3);
  border-radius: var(--border-radius-sm);
  margin-bottom: 2px;
  font-weight: 500;
  font-size: 0.92rem;
  position: relative;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-nav-link i {
  font-size: 1.15rem;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-inverse);
}

.sidebar-nav-link.active {
  background: rgba(255, 255, 255, 0.16);
  color: var(--color-text-inverse);
  font-weight: 700;
}

.sidebar-nav-link.active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: var(--border-radius-pill);
  background: var(--color-accent);
}

.sidebar-nav-badge {
  margin-left: auto;
  background: var(--color-accent);
  color: var(--color-text-on-accent);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--border-radius-pill);
}

.sidebar-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.sidebar-user-details {
  overflow: hidden;
}

.sidebar-user-name {
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.65);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-logout-btn {
  margin-left: auto;
  color: rgba(255, 255, 255, 0.7);
  background: transparent;
  border: none;
  font-size: 1.1rem;
  padding: 6px;
  border-radius: var(--border-radius-sm);
}

.sidebar-logout-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text-inverse);
}

.sidebar-collapse-toggle {
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text-inverse);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  flex-shrink: 0;
}

.sidebar-collapse-toggle:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Main content -------------------------------------------------------------*/
.app-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.app-topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-4);
  position: sticky;
  top: 0;
  z-index: 1020;
}

.topbar-mobile-toggle {
  border: none;
  background: transparent;
  font-size: 1.35rem;
  color: var(--color-text-primary);
  display: none;
}

.topbar-search {
  position: relative;
  flex: 1;
  max-width: 420px;
}

.topbar-search input {
  padding-left: 40px;
}

.topbar-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.topbar-icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  position: relative;
  flex-shrink: 0;
}

.topbar-icon-btn:hover {
  background: var(--color-background);
  color: var(--color-primary);
}

.topbar-icon-badge {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-danger);
  border: 2px solid var(--color-surface);
}

.topbar-user-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--border-radius-pill);
  padding: 4px 14px 4px 4px;
}

.topbar-user-btn:hover {
  background: var(--color-background);
}

.topbar-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.topbar-user-meta {
  text-align: left;
  line-height: 1.2;
}

.topbar-user-name {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.topbar-user-role {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.app-content {
  flex: 1;
  padding: var(--space-5);
  background: var(--color-background);
}

/* Content Header ---------------------------------------------------------*/
.breadcrumb-bar {
  margin-bottom: var(--space-3);
}

.breadcrumb-bar .breadcrumb {
  margin-bottom: 0;
  font-size: var(--font-size-small);
}

.content-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.content-header-text .page-title {
  margin-bottom: 4px;
}

.content-header-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-body);
}

.content-header-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* Auth layout --------------------------------------------------------------*/
.auth-shell {
  min-height: 100vh;
  display: flex;
}

.auth-visual {
  flex: 1.1;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 55%, var(--color-secondary) 100%);
  color: var(--color-text-inverse);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-7);
  text-align: center;
}

.auth-visual-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-top: var(--space-5);
}

.auth-visual-desc {
  color: rgba(255, 255, 255, 0.85);
  max-width: 420px;
  margin-top: var(--space-2);
}

.auth-form-side {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background: var(--color-background);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}