/**
 * Boutme Design System — Layout
 * App shell, sidebar, page structure
 */

/* ─── App Shell ───────────────────────────────────────────────── */
#bm-app {
  display: flex;
  min-height: 100dvh;
  background: var(--bm-bg-base);
  position: relative;
}

/* ─── Sidebar ─────────────────────────────────────────────────── */
#bm-sidebar {
  width: var(--bm-sidebar-w);
  height: 100dvh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--bm-z-sidebar);
  display: flex;
  flex-direction: column;
  background: var(--bm-bg-elevated);
  border-right: 1px solid var(--bm-border-subtle);
  transition: transform var(--bm-dur-slow) var(--bm-ease-out),
              width var(--bm-dur-slow) var(--bm-ease-out);
  overflow: hidden;
  overflow-y: auto;
  scrollbar-width: none;
}
#bm-sidebar::-webkit-scrollbar { display: none; }

/* Sidebar collapsed state (desktop) */
#bm-sidebar.collapsed {
  width: var(--bm-sidebar-collapsed);
}
#bm-sidebar.collapsed .bm-nav-label,
#bm-sidebar.collapsed .bm-sidebar-group-label,
#bm-sidebar.collapsed .bm-sidebar-user-info,
#bm-sidebar.collapsed .bm-sidebar-header-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
  white-space: nowrap;
}
#bm-sidebar.collapsed .bm-nav-item { justify-content: center; padding: 10px; }

/* ─── Sidebar Header ──────────────────────────────────────────── */
.bm-sidebar-header {
  padding: var(--bm-space-5) var(--bm-space-4);
  display: flex;
  align-items: center;
  gap: var(--bm-space-3);
  border-bottom: 1px solid var(--bm-border-subtle);
  min-height: 72px;
  flex-shrink: 0;
}
.bm-sidebar-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: var(--bm-radius-sm);
}
.bm-sidebar-brand {
  font-size: var(--bm-text-md);
  font-weight: var(--bm-weight-bold);
  color: var(--bm-text-primary);
  letter-spacing: -0.03em;
  white-space: nowrap;
  transition: opacity var(--bm-dur-base) var(--bm-ease-out);
}

/* ─── Sidebar User Card ───────────────────────────────────────── */
.bm-sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--bm-space-3);
  padding: var(--bm-space-3) var(--bm-space-4);
  margin: var(--bm-space-2);
  border-radius: var(--bm-radius-md);
  background: var(--bm-bg-raised);
  border: 1px solid var(--bm-border-subtle);
  cursor: pointer;
  transition: background var(--bm-dur-fast) var(--bm-ease-out);
  flex-shrink: 0;
}
.bm-sidebar-user:hover { background: var(--bm-bg-overlay); }
.bm-sidebar-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--bm-radius-full);
  flex-shrink: 0;
  background: var(--bm-gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--bm-text-sm);
  font-weight: var(--bm-weight-semibold);
  color: #fff;
  overflow: hidden;
}
.bm-sidebar-avatar img { width: 100%; height: 100%; object-fit: cover; }
.bm-sidebar-user-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  transition: opacity var(--bm-dur-base) var(--bm-ease-out);
}
.bm-sidebar-username {
  font-size: var(--bm-text-sm);
  font-weight: var(--bm-weight-semibold);
  color: var(--bm-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}
.bm-sidebar-plan {
  font-size: var(--bm-text-xs);
  color: var(--bm-brand);
  white-space: nowrap;
  display: block;
}

/* ─── Sidebar Navigation ──────────────────────────────────────── */
.bm-sidebar-nav {
  flex: 1;
  padding: var(--bm-space-2);
  display: flex;
  flex-direction: column;
  gap: var(--bm-space-1);
}
.bm-sidebar-group {
  margin-top: var(--bm-space-3);
}
.bm-sidebar-group-label {
  font-size: var(--bm-text-xs);
  font-weight: var(--bm-weight-semibold);
  color: var(--bm-text-tertiary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 var(--bm-space-3);
  margin-bottom: var(--bm-space-1);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--bm-dur-base) var(--bm-ease-out);
}
.bm-nav-item {
  display: flex;
  align-items: center;
  gap: var(--bm-space-3);
  padding: 10px var(--bm-space-3);
  border-radius: var(--bm-radius-md);
  color: var(--bm-text-secondary);
  font-size: var(--bm-text-sm);
  font-weight: var(--bm-weight-medium);
  cursor: pointer;
  transition: background var(--bm-dur-fast) var(--bm-ease-out),
              color var(--bm-dur-fast) var(--bm-ease-out);
  text-decoration: none;
  position: relative;
  white-space: nowrap;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}
.bm-nav-item:hover {
  background: var(--bm-bg-hover);
  color: var(--bm-text-primary);
}
.bm-nav-item.active {
  background: var(--bm-accent-dim);
  color: var(--bm-accent);
}
.bm-nav-item.active .bm-nav-icon { color: var(--bm-accent); }
.bm-nav-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--bm-bg-hover);
  color: var(--bm-text-secondary);
  transition: all var(--bm-dur-fast) var(--bm-ease-out);
}
.bm-nav-item:hover .bm-nav-icon {
  background: var(--bm-bg-overlay);
  color: var(--bm-text-primary);
  transform: scale(1.05);
}
.bm-nav-item.active .bm-nav-icon {
  background: var(--bm-accent-dim);
  color: var(--bm-accent);
}
.bm-nav-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--bm-dur-base) var(--bm-ease-out);
}
.bm-nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--bm-red);
  color: #fff;
  font-size: 10px;
  font-weight: var(--bm-weight-bold);
  border-radius: var(--bm-radius-full);
}

/* ─── Sidebar Footer ──────────────────────────────────────────── */
.bm-sidebar-footer {
  padding: var(--bm-space-2);
  border-top: 1px solid var(--bm-border-subtle);
  flex-shrink: 0;
}

/* ─── Topbar ──────────────────────────────────────────────────── */
#bm-topbar {
  position: fixed;
  top: 0;
  left: var(--bm-sidebar-w);
  right: 0;
  height: var(--bm-topbar-h);
  z-index: var(--bm-z-topbar);
  display: flex;
  align-items: center;
  padding: 0 var(--bm-space-6);
  background: rgba(9,9,11,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--bm-border-subtle);
  gap: var(--bm-space-4);
  transition: left var(--bm-dur-slow) var(--bm-ease-out);
}
#bm-topbar.sidebar-collapsed { left: var(--bm-sidebar-collapsed); }

.bm-topbar-title {
  font-size: var(--bm-text-md);
  font-weight: var(--bm-weight-semibold);
  color: var(--bm-text-primary);
  letter-spacing: -0.01em;
  flex: 1;
  min-width: 0;
}
.bm-topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--bm-space-2);
}

/* ─── Mobile Topbar ───────────────────────────────────────────── */
#bm-mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--bm-topbar-h);
  z-index: var(--bm-z-topbar);
  align-items: center;
  padding: 0 var(--bm-space-4);
  gap: var(--bm-space-3);
  background: rgba(9,9,11,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bm-border-subtle);
}
.bm-mobile-logo {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bm-mobile-logo img { height: 26px; width: auto; }

/* ─── Main Content ────────────────────────────────────────────── */
#bm-content {
  margin-left: var(--bm-sidebar-w);
  padding-top: var(--bm-topbar-h);
  padding-bottom: var(--bm-space-12);
  min-height: 100dvh;
  transition: margin-left var(--bm-dur-slow) var(--bm-ease-out);
  flex: 1;
}
#bm-content.sidebar-collapsed { margin-left: var(--bm-sidebar-collapsed); }

.bm-page {
  max-width: var(--bm-content-max);
  margin: 0 auto;
  padding: var(--bm-space-8) var(--bm-space-6);
}

/* ─── Page Header ─────────────────────────────────────────────── */
.bm-page-header {
  margin-bottom: var(--bm-space-8);
}
.bm-page-header-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--bm-space-4);
}
.bm-page-title {
  font-size: var(--bm-text-2xl);
  font-weight: var(--bm-weight-bold);
  color: var(--bm-text-primary);
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.bm-page-subtitle {
  font-size: var(--bm-text-sm);
  color: var(--bm-text-secondary);
  margin-top: var(--bm-space-1);
}
.bm-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--bm-space-2);
  font-size: var(--bm-text-xs);
  color: var(--bm-text-tertiary);
  margin-bottom: var(--bm-space-2);
}
.bm-breadcrumb a { color: var(--bm-text-tertiary); }
.bm-breadcrumb a:hover { color: var(--bm-text-secondary); }
.bm-breadcrumb-sep { color: var(--bm-border-strong); }

/* ─── Grid System ─────────────────────────────────────────────── */
.bm-grid { display: grid; gap: var(--bm-space-4); }
.bm-grid-2 { grid-template-columns: repeat(2, 1fr); }
.bm-grid-3 { grid-template-columns: repeat(3, 1fr); }
.bm-grid-4 { grid-template-columns: repeat(4, 1fr); }
.bm-grid-auto { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }

/* ─── Sidebar Toggle Button ───────────────────────────────────── */
.bm-sidebar-toggle {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--bm-radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--bm-text-secondary);
  transition: background var(--bm-dur-fast), color var(--bm-dur-fast);
  flex-shrink: 0;
}
.bm-sidebar-toggle:hover { background: var(--bm-bg-hover); color: var(--bm-text-primary); }

/* ─── Overlay (mobile) ────────────────────────────────────────── */
#bm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: calc(var(--bm-z-sidebar) - 1);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
#bm-overlay.active { display: block; }

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  #bm-sidebar {
    transform: translateX(-100%);
    width: var(--bm-sidebar-w) !important;
  }
  #bm-sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: var(--bm-shadow-xl);
  }
  #bm-topbar { display: none; }
  #bm-mobile-topbar { display: flex; }
  #bm-content {
    margin-left: 0 !important;
    padding-top: var(--bm-topbar-h);
    padding-bottom: calc(var(--bm-bottomnav-h) + var(--bm-space-4));
  }
  .bm-page { padding: var(--bm-space-4); }
  .bm-page-title { font-size: var(--bm-text-xl); }
  .bm-grid-3, .bm-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .bm-grid-2 { grid-template-columns: 1fr; }
  .bm-page-header-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .bm-grid-3, .bm-grid-4, .bm-grid-2 { grid-template-columns: 1fr; }
  .bm-grid-auto { grid-template-columns: repeat(2, 1fr); }
}

/* Theme toggle sun/moon icon visibility */
[data-theme="light"] .show-light { display: block !important; }
[data-theme="dark"] .show-dark { display: block !important; }