/* ==========================================================================
   CyFun Tool - Layout (Header, Sidebar, Main, Side Panel)
   ========================================================================== */

/* --- Unofficial Copy Banner --- */
.cyfun-origin-banner {
  background: #f59e0b;
  color: #1a1a1a;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  font-family: var(--font-body, Mulish, sans-serif);
  font-weight: 600;
  z-index: 99999;
  position: relative;
}

.cyfun-origin-banner a {
  color: #1a1a1a;
  text-decoration: underline;
  font-weight: 700;
}

.cyfun-origin-banner a:hover {
  color: #000;
}

/* --- App Shell --- */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* --- Header --- */
.header {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 var(--space-lg);
  background: var(--color-header-bg);
  color: var(--color-header-text);
  z-index: var(--z-header);
  flex-shrink: 0;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-header-text);
}

.header__link {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--color-text-muted, #999);
  font-size: var(--text-xs, 12px);
  font-weight: var(--weight-semibold, 600);
  padding: 4px 10px;
  border-radius: var(--radius-sm, 4px);
  transition: color var(--transition-fast, 0.15s), background var(--transition-fast, 0.15s);
}

.header__link:hover {
  color: var(--color-header-text, #fff);
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.header__logo:hover {
  text-decoration: none;
}

.header__logo img {
  height: 40px;
  width: 40px;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.header__spacer {
  flex: 1;
}

.header__org-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-header-text);
  background: rgba(255, 255, 255, 0.08);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.header__org-switcher:hover {
  background: rgba(255, 255, 255, 0.15);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: var(--space-lg);
}

.header__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  color: var(--color-header-text);
  transition: background var(--transition-fast);
}

.header__btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* --- Language Switcher --- */
.header__lang {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-right: var(--space-sm);
}

.lang-btn {
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
}

/* --- Tools Menu (Hamburger Dropdown) --- */
.header__tools-wrap {
  position: relative;
  margin-right: var(--space-sm);
}

.tools-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 240px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-overlay);
  overflow: hidden;
}

.tools-menu.open {
  display: block;
}

.tools-menu__label {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border-light);
}

.tools-menu__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.tools-menu__item:hover {
  background: var(--color-bg-alt);
  text-decoration: none;
}

.tools-menu__item--active {
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.tools-menu__item svg {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.tools-menu__badge {
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  font-weight: var(--weight-semibold);
}

.tools-menu__divider {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-xs) 0;
}

/* --- Org Dropdown --- */
.org-dropdown {
  position: absolute;
  top: calc(var(--header-height) - 6px);
  right: 0;
  min-width: 200px;
  width: 260px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-overlay);
  overflow: hidden;
  max-height: 60vh;
  overflow-y: auto;
}

.org-dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.org-dropdown__item:hover {
  background: var(--color-bg-alt);
  text-decoration: none;
}

.org-dropdown__item--active {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.org-dropdown__divider {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-xs) 0;
}

.org-dropdown__empty {
  padding: var(--space-lg);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Body (Sidebar + Main) --- */
.app__body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  flex-shrink: 0;
  transition: width var(--transition-base);
  overflow: hidden;
}

#sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

#sidebar-nav:hover {
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

#sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

#sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

#sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

#sidebar-nav:hover::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
  overflow: hidden;
}

.sidebar.collapsed .sidebar__subitems,
.sidebar.collapsed .sidebar__shortcuts,
.sidebar.collapsed .sidebar__search {
  display: none;
}

.sidebar.collapsed .sidebar__item {
  justify-content: center;
  padding: var(--space-md) 0;
}

.sidebar.collapsed .sidebar__section {
  padding: var(--space-xs) 0;
}

.sidebar__section {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar__label {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.sidebar.collapsed .sidebar__label {
  display: none;
}

.sidebar__item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  color: var(--color-sidebar-text);
  font-size: var(--text-base);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.sidebar__item:hover {
  background: var(--color-sidebar-hover);
  color: #ffffff;
  text-decoration: none;
}

.sidebar__item.active {
  background: var(--color-sidebar-active);
  color: var(--color-primary-light);
  border-right: 2px solid var(--color-primary);
}

.sidebar.collapsed .sidebar__item.active {
  border-right: none;
  border-left: 3px solid var(--color-primary);
  padding-left: calc(var(--space-md) - 3px);
}

.sidebar__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  text-align: center;
  font-size: var(--text-lg);
  line-height: 24px;
}

.sidebar.collapsed .sidebar__item span:not(.sidebar__icon) {
  display: none;
}

/* --- Sidebar Groups (expandable) --- */
.sidebar__group {}

.sidebar__expand {
  margin-left: auto;
  transition: transform var(--transition-fast);
  opacity: 0.4;
  flex-shrink: 0;
}

.sidebar__group--open .sidebar__expand {
  transform: rotate(90deg);
  opacity: 0.7;
}

.sidebar__subitems {
  padding: 0 0 var(--space-xs) 0;
}

.sidebar__subitem {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-xl);
  padding-left: calc(var(--space-xl) + 28px);
  color: var(--color-sidebar-text);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  opacity: 0.75;
}

.sidebar__subitem:hover {
  background: var(--color-sidebar-hover);
  color: #ffffff;
  opacity: 1;
  text-decoration: none;
}

.sidebar__subitem.active {
  color: var(--color-primary-light);
  opacity: 1;
}

.sidebar__subitem-meta {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  opacity: 0.6;
}

.sidebar__func-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 18px;
  border-radius: var(--radius-sm);
  background: rgba(51, 153, 17, 0.2);
  color: var(--color-primary-light);
  font-size: 9px;
  font-weight: var(--weight-bold);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.sidebar__func-badge--icon {
  background: none;
  color: var(--color-primary);
  width: 20px;
  height: 20px;
}

.sidebar__item--back {
  opacity: 0.6;
  font-size: var(--text-sm);
}

.sidebar__item--back:hover {
  opacity: 1;
}

.sidebar__item-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar__icon--badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 18px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: var(--weight-bold);
  color: #ffffff;
  flex-shrink: 0;
}

.sidebar__icon--badge.badge--basic { background: var(--color-level-basic); }
.sidebar__icon--badge.badge--important { background: var(--color-level-important); }
.sidebar__icon--badge.badge--essential { background: var(--color-level-essential); }

/* --- Keyboard Shortcuts Hint --- */
.sidebar__shortcuts {
  opacity: 0.5;
  padding-bottom: var(--space-md);
}

.sidebar__shortcut {
  padding: 2px var(--space-xl);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.sidebar__shortcut kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.05);
}

/* --- Sidebar Footer --- */
.sidebar__footer {
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  opacity: 0.4;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar__footer a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.sidebar__footer a:hover {
  color: #ffffff;
}

.sidebar.collapsed .sidebar__footer {
  display: none;
}

.sidebar__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
}

.sidebar__toggle:hover {
  color: #ffffff;
}

/* --- Main Content --- */
.main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.main__content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg) var(--space-xl);
}

/* When assessment is active, the layout manages its own padding/scrolling */
.main__content:has(.assess-layout) {
  padding: 0;
  overflow: hidden;
}

/* --- Side Panel (Requirement Detail) --- */
.side-panel {
  width: var(--side-panel-width);
  min-width: var(--side-panel-min-width);
  max-width: var(--side-panel-max-width);
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  overflow-y: auto;
  display: none;
  flex-direction: column;
}

.side-panel.open {
  display: flex;
}

.side-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.side-panel__title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}

.side-panel__close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.side-panel__close:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.side-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

/* --- Resize Handle --- */
.side-panel__resize {
  position: absolute;
  left: -3px;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  z-index: 10;
}

.side-panel__resize:hover {
  background: var(--color-primary-bg);
}