/* ============================================================
   Pigeon Pedigree Pro — Layout System
   ============================================================ */

/* ── App Shell ──────────────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg);
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: width var(--transition-normal);
  overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-4);
  border-bottom: 1px solid rgba(255,255,255,.08);
  text-decoration: none;
  flex-shrink: 0;
  min-height: var(--topbar-height);
}
.sidebar-brand-icon {
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}
.sidebar-brand-text {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
  color: var(--color-white);
  white-space: nowrap;
  line-height: 1.1;
}
.sidebar-brand-sub {
  font-size: var(--font-size-xs);
  color: var(--color-primary-light);
  font-weight: var(--font-weight-medium);
}
.sidebar.collapsed .sidebar-brand-text,
.sidebar.collapsed .sidebar-brand-sub { display: none; }

.sidebar-nav {
  flex: 1;
  padding: var(--space-3) 0;
  overflow-y: auto;
  overflow-x: hidden;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,.12);
  border-radius: var(--radius-full);
}

.nav-section-label {
  padding: var(--space-3) var(--space-4) var(--space-1);
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.3);
  white-space: nowrap;
}
.sidebar.collapsed .nav-section-label { display: none; }

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 9px var(--space-4);
  margin: 1px var(--space-2);
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}
.nav-item:hover {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-active);
  text-decoration: none;
}
.nav-item.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-text-active);
}
.nav-item-icon {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 16px;
}
.nav-item-text { flex: 1; }
.sidebar.collapsed .nav-item-text { display: none; }

.nav-badge {
  background: var(--color-danger);
  color: white;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  padding: 1px 5px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}
.sidebar.collapsed .nav-badge {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  padding: 0;
  border-radius: 50%;
}

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid rgba(255,255,255,.08);
}
.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.sidebar-user:hover { background: var(--sidebar-hover-bg); }
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: var(--sidebar-text);
}
.sidebar.collapsed .sidebar-user-info { display: none; }

/* ── Main Content ───────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}
.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed);
}

/* ── Topbar ─────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-height);
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--topbar-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-xs);
}
.topbar-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text-secondary);
  border: none; background: none;
  transition: background var(--transition-fast);
}
.topbar-toggle:hover { background: var(--color-bg); }

.topbar-breadcrumb {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.topbar-breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

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

.topbar-icon-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text-secondary);
  border: none; background: none;
  transition: background var(--transition-fast);
  position: relative;
}
.topbar-icon-btn:hover { background: var(--color-bg); }

.notif-dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid var(--topbar-bg);
}

/* ── Page Content ───────────────────────────────────────────── */
.page-content {
  flex: 1;
  padding: var(--space-6);
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.2;
}
.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ── Grid ───────────────────────────────────────────────────── */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1200px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width:  900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width:  640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
  .page-content { padding: var(--space-4); }
}

/* ── Auth Layout ────────────────────────────────────────────── */
.auth-shell {
  min-height: 100vh;
  background: linear-gradient(135deg, #1C1C1E 0%, #2C2C2E 50%, #3C1A00 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.auth-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
}
.auth-card-header {
  background: var(--sidebar-bg);
  padding: var(--space-8) var(--space-6) var(--space-6);
  text-align: center;
}
.auth-logo {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
  margin: 0 auto var(--space-4);
}
.auth-title {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0 0 var(--space-1);
}
.auth-subtitle {
  color: var(--sidebar-text);
  font-size: var(--font-size-sm);
}
.auth-card-body { padding: var(--space-6); }
.auth-card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  background: var(--color-off-white);
}