.layout {
  display: flex;
  min-height: 100vh;
}

/* ==================== Sidebar ==================== */
.sidebar {
  width: 260px;
  background: var(--bg-white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
  transition:
    width 0.3s ease,
    transform 0.3s ease;
}

.sidebar.collapsed {
  width: 72px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  min-height: 72px;
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
  padding: 1.5rem 1rem;
}

.sidebar-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
}

.mobile-brand .sidebar-logo {
  width: 24px;
  height: 24px;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  white-space: nowrap;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-version {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  opacity: 0.7;
  margin-top: 1px;
}

/* Collapse Toggle Button - Circular design at edge */
.collapse-toggle {
  position: absolute;
  right: -14px;
  top: 36px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-white);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
  z-index: 101;
  padding: 0;
}

.collapse-toggle:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.collapse-toggle svg {
  width: 16px;
  height: 16px;
}

.sidebar.collapsed .collapse-toggle {
  right: -14px;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
}

.sidebar.collapsed .sidebar-nav {
  padding: 1rem 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 0.7rem;
}

.nav-item:hover {
  background: var(--bg-light);
  color: var(--text-primary);
  text-decoration: none;
}

.nav-item.active {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-item.active svg {
  color: var(--primary);
}

.sidebar-footer {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 1px solid var(--border);
}

.sidebar.collapsed .sidebar-footer {
  padding: 0.75rem 0.5rem;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.9rem;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  overflow: hidden;
}

.appearance-button-cue {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  /* Plain icon, no brand orb — the green swatch belonged to the removed palette picker. */
  color: inherit;
}

.sidebar.collapsed .theme-toggle-btn,
.sidebar.collapsed .logout-btn {
  justify-content: center;
  padding: 0.6rem;
}

.theme-toggle-btn:hover {
  background: var(--bg-light);
  color: var(--text-primary);
}

.language-menu,
.appearance-menu {
  position: relative;
}

.language-menu .theme-toggle-btn,
.appearance-menu .theme-toggle-btn {
  width: 100%;
}

.language-menu-list {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 0.35rem);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 160px;
  padding: 0.3rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.16);
  z-index: 120;
}

.language-menu-item {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 34px;
  padding: 0.45rem 0.6rem;
  color: var(--text-secondary);
  background: transparent;
  border: 0;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
}

.language-menu-item:hover {
  background: var(--bg-light);
  color: var(--text-primary);
}

.language-menu-item.active {
  background: var(--primary-soft);
  color: var(--primary);
}

.sidebar.collapsed .language-menu-list {
  right: auto;
  left: calc(100% + 0.5rem);
  bottom: 0;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.9rem;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  overflow: hidden;
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--error);
}

/* ==================== Main Content ==================== */
.main-content {
  flex: 1;
  margin-left: 260px;
  width: calc(100% - 260px);
  background: var(--bg-light);
  min-height: 100vh;
  overflow-x: hidden;
  transition:
    margin-left 0.3s ease,
    width 0.3s ease;
}

.main-content.expanded {
  margin-left: 72px;
  width: calc(100% - 72px);
}

/* ==================== Mobile Styles ==================== */
.mobile-header {
  display: none;
}

.sidebar-overlay {
  display: none;
}

@media (max-width: 767px) {
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    padding: 0 1rem;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    z-index: 90;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent !important;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius);
    transition: background 0.2s;
    padding: 0;
  }

  .mobile-menu-btn svg {
    color: var(--text-primary);
    stroke: var(--text-primary);
  }

  .mobile-menu-btn:hover {
    background: var(--bg-light) !important;
  }

  .mobile-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .mobile-brand .brand-name {
    font-size: 1rem;
  }

  .sidebar.mobile {
    transform: translateX(-100%);
    width: 280px;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
  }

  .sidebar.mobile.open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 95;
    animation: fadeIn 0.2s ease;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  .main-content.mobile {
    margin-left: 0;
    width: 100%;
    padding-top: 56px;
    height: 100vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .collapse-toggle {
    display: none;
  }
}

/* ==================== RTL support ==================== */
[dir='rtl'] .sidebar {
  border-right: none;
  border-left: 1px solid var(--border);
}

[dir='rtl'] .collapse-toggle {
  right: auto;
  left: -14px;
}

[dir='rtl'] .collapse-toggle svg {
  transform: scaleX(-1);
}

[dir='rtl'] .language-menu-item {
  text-align: right;
}

[dir='rtl'] .sidebar.collapsed .language-menu-list {
  right: calc(100% + 0.5rem);
  left: auto;
}

[dir='rtl'] .main-content {
  margin-left: 0;
  margin-right: 260px;
  transition:
    margin-right 0.3s ease,
    width 0.3s ease;
}

[dir='rtl'] .main-content.expanded {
  margin-right: 72px;
}

@media (max-width: 768px) {
  [dir='rtl'] .main-content,
  [dir='rtl'] .main-content.mobile {
    margin-right: 0;
  }
}