/* ============================================
   BuildMate Layout — Sidebar + Content
   ============================================ */

/* ---- App Shell ---- */
.app-shell {
  display: flex;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
  background-color: transparent; /* Let body gradient show through */
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  height: 100dvh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--transition-slow), min-width var(--transition-slow);
  overflow: hidden;
  box-shadow: 4px 0 24px rgba(0,0,0,0.02);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.sidebar-brand {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 60px;
}

.sidebar-brand-icon {
  width: 24px;
  height: 24px;
  background: var(--primary-500);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-brand-icon svg {
  width: 14px;
  height: 14px;
  color: white;
}

.sidebar-brand-text h2 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
  width: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  color: var(--sidebar-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
  white-space: nowrap;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--sidebar-bg-light);
  color: var(--sidebar-text-hover);
  transform: translateX(4px); /* Premium hover shift */
}

.nav-item.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-active-text);
  border-radius: 8px; /* Softer radius */
  font-weight: var(--font-weight-bold);
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.1); /* Subtle blue glow */
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-item.active svg,
.nav-item:hover svg {
  opacity: 1;
}

.nav-item span {
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.sidebar-avatar {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  background: #1e293b;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
}

.sidebar-user-info .name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.sidebar-user-info .role {
  font-size: 0.65rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar-logout {
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
}

.sidebar-logout:hover {
  color: var(--text-primary);
}

.sidebar-logout svg {
  width: 18px;
  height: 18px;
}

/* ---- Main Area ---- */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ---- Mobile Header ---- */
.mobile-header {
  display: none;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
}

.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--page-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
}

.menu-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-header-title {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
}

/* ---- Content ---- */
.content-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 32px 40px;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    left: -260px;
    top: 0;
    bottom: 0;
    height: 100%;
    z-index: 1000;
    transition: left var(--transition-slow);
  }
  .sidebar.open {
    left: 0;
  }
  .sidebar-overlay {
    z-index: 999;
  }
  .mobile-header {
    display: flex;
  }
}

@media (max-width: 768px) {
  .content-area {
    padding: 16px;
  }
}

/* ---- Sidebar Overlay for Mobile ---- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sidebar) - 1);
}

.sidebar-overlay.active {
  display: block;
}