/* kf-nav.css — Karst Firewall 5.0 sidebar navigation
   Replaces Metronic icon-only flyout sidebar with an accessible 3-mode sidebar.
   Depends on: kf-tokens.css */

/* ═══════════════════════════════════════════════════════
   SKIP LINK
══════════════════════════════════════════════════════════ */

.kf-skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-2) var(--space-4);
  background: var(--color-info-500);
  color: #fff;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}
.kf-skip-link:focus {
  top: var(--space-2);
}

/* ═══════════════════════════════════════════════════════
   ASIDE CONTAINER — override Metronic width
══════════════════════════════════════════════════════════ */

#kt_aside {
  width: var(--kf-nav-width, 240px) !important;
  min-width: var(--kf-nav-width, 240px) !important;
  max-width: var(--kf-nav-width, 240px) !important;
  background-color: var(--color-nav-bg) !important;
  transition: width var(--transition-normal), min-width var(--transition-normal), max-width var(--transition-normal) !important;
  overflow: hidden !important;
  flex-shrink: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  height: 100vh !important;
  position: sticky !important;
  top: 0 !important;
  z-index: 100 !important;
}

/* Mobile off-canvas */
@media (max-width: 768px) {
  #kt_aside {
    position: fixed !important;
    left: 0;
    top: 0;
    transform: translateX(0);
    transition: transform var(--transition-normal), width var(--transition-normal) !important;
  }
  body.kf-nav--hidden #kt_aside {
    transform: translateX(-100%) !important;
    width: 240px !important;
    min-width: 240px !important;
    max-width: 240px !important;
  }
}

/* Mobile overlay backdrop */
.kf-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 99;
}
body.kf-nav--mobile-open .kf-nav-overlay {
  display: block;
}
body.kf-nav--mobile-open #kt_aside {
  transform: translateX(0) !important;
}

/* ═══════════════════════════════════════════════════════
   ASIDE HEADER — brand + toggle button
══════════════════════════════════════════════════════════ */

.kf-aside__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  flex-shrink: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  min-height: 64px;
}

.kf-aside__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  overflow: hidden;
  white-space: nowrap;
  min-width: 0;
}

.kf-aside__brand-icon {
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
  width: 32px;
  text-align: center;
}

.kf-aside__brand-text {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity var(--transition-normal), width var(--transition-normal);
}

.kf-aside__brand-text strong {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kf-aside__brand-text small {
  font-size: 11px;
  color: var(--color-nav-text-muted);
  white-space: nowrap;
}

/* Hide brand text in compact mode */
body.kf-nav--compact .kf-aside__brand-text {
  width: 0;
  opacity: 0;
  overflow: hidden;
}

.kf-aside__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  color: var(--color-nav-text-muted);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.kf-aside__toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.kf-aside__toggle:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
  color: #fff;
}

/* ═══════════════════════════════════════════════════════
   NAV SCROLL AREA
══════════════════════════════════════════════════════════ */

.kf-aside__nav {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-3) 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.20) transparent;
}

.kf-aside__nav::-webkit-scrollbar {
  width: 4px;
}
.kf-aside__nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.20);
  border-radius: 2px;
}

/* ═══════════════════════════════════════════════════════
   NAV LIST
══════════════════════════════════════════════════════════ */

.kf-nav__list,
.kf-nav__sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ═══════════════════════════════════════════════════════
   HOME LINK (direct, no group)
══════════════════════════════════════════════════════════ */

.kf-nav__home {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  color: var(--color-nav-text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}

.kf-nav__home:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.kf-nav__home:focus-visible {
  outline: var(--focus-outline);
  outline-offset: calc(-1 * var(--focus-outline-offset));
  background: rgba(255, 255, 255, 0.08);
}

.kf-nav__home[aria-current="page"] {
  background: var(--color-nav-active-bg);
  border-left-color: var(--color-nav-active-bar);
  color: #fff;
  font-weight: 600;
}

.kf-nav__home-icon {
  font-size: 16px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  color: var(--color-nav-icon);
  transition: color var(--transition-fast);
}

.kf-nav__home[aria-current="page"] .kf-nav__home-icon,
.kf-nav__home:hover .kf-nav__home-icon {
  color: #fff;
}

.kf-nav__home-label {
  font-size: 13px;
  font-weight: 500;
  transition: opacity var(--transition-normal), width var(--transition-normal);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* ═══════════════════════════════════════════════════════
   GROUP — accordion trigger
══════════════════════════════════════════════════════════ */

.kf-nav__group {
  margin-bottom: var(--space-1);
}

.kf-nav__group-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  color: var(--color-nav-text);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}

.kf-nav__group-trigger:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.kf-nav__group-trigger:focus-visible {
  outline: var(--focus-outline);
  outline-offset: calc(-1 * var(--focus-outline-offset));
  background: rgba(255, 255, 255, 0.08);
}

.kf-nav__group-trigger[aria-expanded="true"] {
  color: #fff;
}

.kf-nav__group-trigger.kf-nav--group-active {
  border-left-color: rgba(255, 255, 255, 0.40);
}

.kf-nav__group-icon {
  font-size: 16px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  color: var(--color-nav-icon);
  transition: color var(--transition-fast);
}

.kf-nav__group-trigger:hover .kf-nav__group-icon,
.kf-nav__group-trigger[aria-expanded="true"] .kf-nav__group-icon {
  color: #fff;
}

.kf-nav__group-label {
  flex: 1;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: opacity var(--transition-normal);
}

.kf-nav__group-chevron {
  font-size: 11px;
  flex-shrink: 0;
  color: var(--color-nav-text-muted);
  transition: transform var(--transition-fast), opacity var(--transition-normal);
}

.kf-nav__group-trigger[aria-expanded="true"] .kf-nav__group-chevron {
  transform: rotate(180deg);
  color: var(--color-nav-text);
}

/* ═══════════════════════════════════════════════════════
   GROUP PANEL (accordion body)
══════════════════════════════════════════════════════════ */

.kf-nav__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-normal);
}

.kf-nav__panel[aria-hidden="false"] {
  max-height: 600px;
}

/* ═══════════════════════════════════════════════════════
   SUB-ITEMS
══════════════════════════════════════════════════════════ */

.kf-nav__sublist {
  padding: var(--space-1) 0 var(--space-2) 0;
}

.kf-nav__sublink {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 7px var(--space-4) 7px calc(var(--space-4) + 26px);
  color: var(--color-nav-text-muted);
  text-decoration: none;
  font-size: 13px;
  border-left: 3px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}

.kf-nav__sublink:hover {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.90);
}

.kf-nav__sublink:focus-visible {
  outline: var(--focus-outline);
  outline-offset: calc(-1 * var(--focus-outline-offset));
  background: rgba(255, 255, 255, 0.06);
}

.kf-nav__sublink[aria-current="page"] {
  background: rgba(255, 255, 255, 0.10);
  border-left-color: #fff;
  color: #fff;
  font-weight: 500;
}

.kf-nav__sublabel {
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--transition-normal);
}

/* ═══════════════════════════════════════════════════════
   COMPACT MODE — collapse labels
══════════════════════════════════════════════════════════ */

body.kf-nav--compact .kf-nav__group-label,
body.kf-nav--compact .kf-nav__group-chevron,
body.kf-nav--compact .kf-nav__home-label,
body.kf-nav--compact .kf-nav__sublabel {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

/* In compact mode, group triggers are centered icon-only */
body.kf-nav--compact .kf-aside__nav {
  padding-left: 0;
  padding-right: 0;
}

body.kf-nav--compact .kf-nav__group-trigger,
body.kf-nav--compact .kf-nav__home {
  justify-content: center;
  padding: var(--space-2) 0;
}

/* Keep icons centered */
body.kf-nav--compact .kf-nav__group-icon,
body.kf-nav--compact .kf-nav__home-icon {
  width: auto;
  font-size: 18px;
}

/* Compact: panels render as absolute popover via JS */
body.kf-nav--compact .kf-nav__panel {
  position: absolute;
  left: var(--kf-nav-width-compact);
  background: #fff;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-3);
  width: 240px;
  z-index: 200;
  max-height: none;
  overflow: visible;
}

body.kf-nav--compact .kf-nav__panel[aria-hidden="false"] {
  max-height: none;
}

body.kf-nav--compact .kf-nav__panel .kf-nav__sublink {
  color: #374151;
  border-left-color: transparent;
  padding: 8px var(--space-4);
}

body.kf-nav--compact .kf-nav__panel .kf-nav__sublink:hover {
  background: #f3f4f6;
  color: #111;
}

body.kf-nav--compact .kf-nav__panel .kf-nav__sublink[aria-current="page"] {
  background: #ede9fe;
  border-left-color: var(--color-nav-bg);
  color: var(--color-nav-bg);
}

body.kf-nav--compact .kf-nav__panel .kf-nav__sublabel {
  opacity: 1;
  width: auto;
}

/* Compact panel header */
body.kf-nav--compact .kf-nav__panel-title {
  display: block;
  padding: var(--space-3) var(--space-4) var(--space-2);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9ca3af;
  border-bottom: 1px solid #f0f0f0;
}

/* Expanded mode: hide compact panel title */
.kf-nav__panel-title {
  display: none;
}

/* ═══════════════════════════════════════════════════════
   ASIDE FOOTER — user info
══════════════════════════════════════════════════════════ */

.kf-aside__footer {
  flex-shrink: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  padding: var(--space-3);
}

.kf-aside__user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-1);
  overflow: hidden;
}

.kf-aside__user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.kf-aside__user-info {
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--transition-normal), width var(--transition-normal);
}

.kf-aside__user-name {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kf-aside__user-role {
  display: block;
  font-size: 11px;
  color: var(--color-nav-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
}

body.kf-nav--compact .kf-aside__user-info {
  width: 0;
  opacity: 0;
}

body.kf-nav--compact .kf-aside__user {
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════
   TOPBAR HAMBURGER (mobile + desktop toggle)
══════════════════════════════════════════════════════════ */

.kf-nav-hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: #6b7280;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.kf-nav-hamburger:hover {
  background: #f3f4f6;
  color: #111;
}

.kf-nav-hamburger:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
}

/* ═══════════════════════════════════════════════════════
   TOPBAR icon-button a11y improvements
══════════════════════════════════════════════════════════ */

/* Every icon-only toolbar button gets a visible focus ring */
#kt_header .btn-icon:focus-visible {
  outline: var(--focus-outline) !important;
  outline-offset: var(--focus-outline-offset) !important;
  border-radius: var(--radius-sm);
}

/* ═══════════════════════════════════════════════════════
   FIXED HEADER ALIGNMENT WITH SIDEBAR
   Metronic's stock CSS hardcodes .header-fixed .header { left:100px }
   and .wrapper { padding-left:100px } for a 100px aside. Our sidebar is
   3-mode (240 / 72 / 0 px via --kf-nav-width). Override both so the page
   title doesn't slide under the sidebar.
══════════════════════════════════════════════════════════ */

@media (min-width: 992px) {
  .header-fixed .header {
    left: var(--kf-nav-width, 240px) !important;
    transition: left var(--transition-normal);
  }
  .wrapper {
    padding-left: 0 !important; /* sidebar is sticky in flex, not fixed */
  }
}

/* Vertical divider between topbar groups */
.kf-topbar-divider {
  width: 1px;
  height: 24px;
  background: #e5e7eb;
  margin: 0 var(--space-2);
  flex-shrink: 0;
  align-self: center;
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — show hamburger only at ≤ 768px
══════════════════════════════════════════════════════════ */

@media (min-width: 769px) {
  .kf-nav-hamburger--mobile-only {
    display: none;
  }
}