/* ============================================================
   FILE: assets/css/navbar.css
   ============================================================ */

/* ---------- theme variables ---------- */
:root {
  --kx9-topbar-bg: #0b1220;
  --kx9-topbar-text: #8ea0bd;
  --kx9-topbar-link: #cbd5e1;
  --kx9-navbar-bg: rgba(255,255,255,.94);
  --kx9-navbar-shadow: 0 10px 28px rgba(15,23,42,.10);
  --kx9-nav-link: #334155;
  --kx9-nav-link-hover-bg: #eef2ff;
  --kx9-submenu-bg: #fff;
  --kx9-submenu-shadow: 0 18px 44px rgba(15,23,42,.18);
  --kx9-submenu-border: var(--kx9-line);
  --kx9-sub-label: #8a93a6;
  --kx9-divider: var(--kx9-line);
  --kx9-mobile-menu-bg: #fff;
  --kx9-mobile-border: #f1f5f9;
  --kx9-mobile-shadow: 0 24px 34px rgba(15,23,42,.12);
  --kx9-toggle-bg: #fff;
  --kx9-toggle-border: #e2e8f0;
  --kx9-toggle-icon: var(--kx9-ink);
  --kx9-accordion-border: #dbeafe;
  /* NEW: submenu active variables */
  --kx9-sub-active-bg: rgba(99,102,241,.10);
  --kx9-sub-active-color: var(--kx9-brand);
  --kx9-sub-active-border: var(--kx9-brand);
}

[data-theme="dark"] {
  --kx9-topbar-bg: #060911;
  --kx9-topbar-text: #64748b;
  --kx9-topbar-link: #94a3b8;
  --kx9-navbar-bg: rgba(11,14,20,.94);
  --kx9-navbar-shadow: 0 10px 28px rgba(0,0,0,.35);
  --kx9-nav-link: #c3cbd7;
  --kx9-nav-link-hover-bg: #1b2330;
  --kx9-submenu-bg: #151a23;
  --kx9-submenu-shadow: 0 18px 44px rgba(0,0,0,.45);
  --kx9-submenu-border: #232a36;
  --kx9-sub-label: #5a6474;
  --kx9-divider: #232a36;
  --kx9-mobile-menu-bg: #0f1318;
  --kx9-mobile-border: #1e2530;
  --kx9-mobile-shadow: 0 24px 34px rgba(0,0,0,.4);
  --kx9-toggle-bg: #1b2330;
  --kx9-toggle-border: #2d3748;
  --kx9-toggle-icon: #e5e9f0;
  --kx9-accordion-border: #2563eb;
  /* NEW: submenu active variables (dark) */
  --kx9-sub-active-bg: rgba(99,102,241,.18);
  --kx9-sub-active-color: #818cf8;
  --kx9-sub-active-border: #818cf8;
}

/* ---------- top strip ---------- */
.kx9-topbar {
  background: var(--kx9-topbar-bg);
  color: var(--kx9-topbar-text);
  font-size: clamp(11px, .2vw + 10px, 12.5px);
  animation: kx9FadeDown .5s var(--kx9-ease);
}

.kx9-topbar-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 7px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.kx9-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.kx9-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 4px;
  background: #22c55e;
  animation: kx9PulseDot 2.2s ease-in-out infinite;
}

.kx9-topbar-actions {
  display: flex;
  gap: 18px;
  align-items: center;
}

.kx9-topbar a {
  color: var(--kx9-topbar-link);
  text-decoration: none;
  position: relative;
  transition: color .2s;
}

.kx9-topbar a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--kx9-accent);
  transition: right .25s var(--kx9-ease);
}

.kx9-topbar a:hover { color: #fff; }
.kx9-topbar a:hover::after { right: 0; }
.kx9-topbar i { color: var(--kx9-accent); margin-right: 5px; }

/* ---------- sticky navbar ---------- */
.kx9-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--kx9-navbar-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--kx9-line);
  transition: box-shadow .25s ease, background .3s;
  animation: kx9NavDrop .55s var(--kx9-ease);
}

.kx9-navbar.kx9-scrolled {
  box-shadow: var(--kx9-navbar-shadow);
}

.kx9-nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  height: var(--kx9-nav-h);
}

.kx9-brand {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: clamp(1.1rem, 1vw + .8rem, 1.4rem);
  color: var(--kx9-ink);
  text-decoration: none;
  letter-spacing: -.5px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  transition: color .3s;
}

.kx9-brand-mark {
  width: 30px;
  height: 30px;
  border-radius: var(--kx9-r);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  background: linear-gradient(135deg, var(--kx9-brand), var(--kx9-accent));
  box-shadow: 0 6px 14px rgba(37,99,235,.35);
}

.kx9-brand em {
  font-style: normal;
  background: linear-gradient(90deg, var(--kx9-brand), var(--kx9-accent), var(--kx9-brand2), var(--kx9-brand));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: kx9GradFlow 5s linear infinite;
}

/* ---------- menu ---------- */
.kx9-nav-menu {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0 0 0 auto;
  padding: 0;
}

.kx9-nav-menu a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--kx9-r);
  color: var(--kx9-nav-link);
  text-decoration: none;
  font-weight: 600;
  font-size: .92em;
  white-space: nowrap;
  transition: background .2s, color .2s;
}

.kx9-nav-menu a:hover {
  background: var(--kx9-nav-link-hover-bg);
  color: var(--kx9-brand);
}

.kx9-nav-menu li.kx9-active > a {
  color: var(--kx9-brand);
  background: var(--kx9-nav-link-hover-bg);
}

.kx9-nav-menu > li > a {
  position: relative;
}

.kx9-nav-menu > li > a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  border-radius: var(--kx9-r);
  background: linear-gradient(90deg, var(--kx9-brand), var(--kx9-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--kx9-ease);
}

.kx9-nav-menu > li:hover > a::after,
.kx9-nav-menu > li.kx9-active > a::after {
  transform: scaleX(1);
}

.kx9-chev {
  font-size: .62em;
  transition: transform .25s var(--kx9-ease);
}

.kx9-submenu .kx9-chev {
  margin-left: auto;
  transform: rotate(-90deg);
}

/* ---------- theme toggle ---------- */
.kx9-theme-toggle {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--kx9-toggle-border);
  background: var(--kx9-toggle-bg);
  color: var(--kx9-toggle-icon);
  font-size: 15px;
  cursor: pointer;
  display: grid;
  place-items: center;
  overflow: hidden;
  transition: transform .3s cubic-bezier(.4,0,.2,1), background .3s, border-color .3s, box-shadow .3s, color .3s;
  flex-shrink: 0;
  margin: 0 4px;
}

.kx9-theme-toggle:hover {
  transform: rotate(20deg) scale(1.08);
  box-shadow: 0 4px 16px rgba(37,99,235,.18);
  border-color: var(--kx9-brand);
}

.kx9-theme-toggle:active {
  transform: rotate(20deg) scale(.95);
}

.kx9-theme-toggle .kx9-theme-icon-dark,
.kx9-theme-toggle .kx9-theme-icon-light {
  position: absolute;
  transition: opacity .35s ease, transform .4s cubic-bezier(.4,0,.2,1);
}

:root:not([data-theme="dark"]) .kx9-theme-toggle .kx9-theme-icon-dark {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

:root:not([data-theme="dark"]) .kx9-theme-toggle .kx9-theme-icon-light {
  opacity: 0;
  transform: rotate(90deg) scale(.5);
}

[data-theme="dark"] .kx9-theme-toggle .kx9-theme-icon-dark {
  opacity: 0;
  transform: rotate(-90deg) scale(.5);
}

[data-theme="dark"] .kx9-theme-toggle .kx9-theme-icon-light {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: #fbbf24;
}

/* ---------- CTA ---------- */
.kx9-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: .85em;
  color: #fff;
  white-space: nowrap;
  padding: 10px 18px;
  border-radius: var(--kx9-r);
  background: linear-gradient(90deg, var(--kx9-brand), var(--kx9-brand2), var(--kx9-brand));
  background-size: 200% 100%;
  box-shadow: 0 8px 18px rgba(37,99,235,.28);
  transition: background-position .4s var(--kx9-ease), transform .2s, box-shadow .2s;
}

.kx9-nav-cta:hover {
  background-position: 100% 0;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(37,99,235,.38);
}

/* ---------- hamburger ---------- */
.kx9-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid var(--kx9-toggle-border);
  background: var(--kx9-toggle-bg);
  border-radius: 50%;
  cursor: pointer;
  transition: border-color .2s, background .3s;
  flex: none;
}

.kx9-nav-toggle:hover {
  border-color: var(--kx9-brand);
}

.kx9-nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--kx9-toggle-icon);
  border-radius: 2px;
  transition: transform .3s var(--kx9-ease), opacity .3s, background .3s;
}

body.kx9-nav-open .kx9-nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.kx9-nav-open .kx9-nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.kx9-nav-open .kx9-nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- dropdowns ---------- */
li.kx9-has-sub {
  position: relative;
}

li.kx9-has-sub:hover {
  z-index: 120;
}

.kx9-submenu {
  list-style: none;
  margin: 0;
  padding: 8px;
  min-width: 236px;
  background: var(--kx9-submenu-bg);
  border: 1px solid var(--kx9-submenu-border);
  border-radius: var(--kx9-r);
  box-shadow: var(--kx9-submenu-shadow);
  position: absolute;
  z-index: 100;
  isolation: isolate;
  transition: background .3s, border-color .3s;
}

.kx9-nav-menu > .kx9-has-sub > .kx9-submenu {
  top: 100%;
  left: 0;
}

.kx9-submenu .kx9-submenu {
  top: -9px;
  left: calc(100% + 6px);
  z-index: 110;
}

.kx9-submenu a {
  padding: 9px 12px;
  border-radius: var(--kx9-r);
  font-size: .9em;
  color: var(--kx9-nav-link);
  transition: background .2s, color .2s, transform .2s var(--kx9-ease);
}

.kx9-submenu a:hover {
  background: var(--kx9-nav-link-hover-bg);
  color: var(--kx9-brand);
  transform: translateX(3px);
}

.kx9-ico {
  width: 20px;
  text-align: center;
  color: #94a3b8;
  transition: color .2s;
}

.kx9-submenu a:hover .kx9-ico {
  color: var(--kx9-brand);
}

.kx9-sub-label {
  padding: 8px 12px 4px;
  font-size: .64rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--kx9-sub-label);
  transition: color .3s;
}

.kx9-divider {
  height: 1px;
  background: var(--kx9-divider);
  margin: 6px 8px;
  transition: background .3s;
}

.kx9-badge {
  margin-left: auto;
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: var(--kx9-r);
  color: #fff;
  background: linear-gradient(90deg, var(--kx9-brand2), var(--kx9-brand));
}

.kx9-badge.kx9-badge-alt {
  background: linear-gradient(90deg, #059669, #10b981);
}

/* auto-direction flips */
.kx9-nav-menu > .kx9-has-sub.kx9-flip-x > .kx9-submenu {
  left: auto;
  right: 0;
}

.kx9-submenu .kx9-has-sub.kx9-flip-x > .kx9-submenu {
  left: auto;
  right: calc(100% + 6px);
}

.kx9-nav-menu > .kx9-has-sub.kx9-flip-y > .kx9-submenu {
  top: auto;
  bottom: 100%;
}

.kx9-submenu .kx9-has-sub.kx9-flip-y > .kx9-submenu {
  top: auto;
  bottom: -9px;
}

/* ---------- submenu active link (sub-page highlight) ---------- */
.kx9-submenu a.kx9-sub-active {
  background: var(--kx9-sub-active-bg);
  color: var(--kx9-sub-active-color) !important;
  font-weight: 700;
  border-left: 3px solid var(--kx9-sub-active-border);
  padding-left: 9px;
  position: relative;
}

.kx9-submenu a.kx9-sub-active .kx9-ico {
  color: var(--kx9-sub-active-color) !important;
}

.kx9-submenu a.kx9-sub-active::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--kx9-brand), var(--kx9-accent));
}

.kx9-submenu a.kx9-sub-active:hover {
  background: var(--kx9-sub-active-bg);
  color: var(--kx9-sub-active-color) !important;
}

/* ---------- desktop behaviour ---------- */
@media (min-width: 901px) {
  .kx9-has-sub > .kx9-submenu {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(14px) scale(.98);
    transform-origin: top left;
    transition: opacity .22s var(--kx9-ease) .3s, transform .22s var(--kx9-ease) .3s, visibility 0s linear .52s;
  }

  .kx9-submenu .kx9-has-sub > .kx9-submenu {
    transform: translateX(14px) scale(.98);
    transform-origin: left top;
  }

  .kx9-has-sub:hover > .kx9-submenu,
  .kx9-has-sub:focus-within > .kx9-submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: opacity .2s var(--kx9-ease) .07s, transform .2s var(--kx9-ease) .07s, visibility 0s linear .07s;
  }

  .kx9-has-sub:hover > a > .kx9-chev {
    transform: rotate(180deg);
  }

  .kx9-submenu .kx9-has-sub:hover > a > .kx9-chev {
    transform: rotate(180deg);
  }

  .kx9-nav-menu > .kx9-has-sub::before {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 16px;
  }

  .kx9-submenu .kx9-has-sub::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 100%;
    width: 12px;
  }

  .kx9-submenu .kx9-has-sub.kx9-flip-x::before {
    left: auto;
    right: 100%;
  }
}

/* ---------- mobile nav ---------- */
@media (max-width: 900px) {
  .kx9-brand {
    margin-right: auto;
    order: 1;
  }

  .kx9-nav-cta {
    display: none;
  }

  .kx9-nav-inner {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .kx9-theme-toggle {
    order: 3;
    width: 38px;
    height: 38px;
    font-size: 14px;
    margin: 0 4px 0 0;
  }

  .kx9-nav-toggle {
    display: inline-flex;
    order: 4;
    margin-left: 0;
  }

  .kx9-nav-menu {
    order: 5;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 90;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0 14px;
    background: var(--kx9-mobile-menu-bg);
    border-bottom: 1px solid var(--kx9-line);
    box-shadow: var(--kx9-mobile-shadow);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height .35s var(--kx9-ease), visibility .35s, padding .35s, background .3s;
  }

  body.kx9-nav-open .kx9-nav-menu {
    max-height: min(72vh, 620px);
    overflow-y: auto;
    visibility: visible;
    padding: 10px 14px 16px;
  }

  .kx9-nav-menu::-webkit-scrollbar {
    width: 6px;
  }

  .kx9-nav-menu::-webkit-scrollbar-track {
    background: transparent;
  }

  .kx9-nav-menu::-webkit-scrollbar-thumb {
    background: var(--kx9-line);
    border-radius: 3px;
  }

  .kx9-nav-menu > li {
    border-bottom: 1px solid var(--kx9-mobile-border);
    transition: border-color .3s;
  }

  .kx9-nav-menu > li:last-child {
    border-bottom: none;
  }

  .kx9-nav-menu a {
    width: 100%;
    padding: 12px 10px;
  }

  .kx9-nav-menu > li > a::after {
    display: none;
  }

  .kx9-submenu {
    position: static !important;
    min-width: 0;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--kx9-accordion-border);
    border-radius: 0;
    margin-left: 14px;
    padding: 0 0 0 10px;
    max-height: 0;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none !important;
    transition: max-height .3s var(--kx9-ease), border-color .3s;
    z-index: auto;
    isolation: auto;
  }

  .kx9-has-sub.kx9-open > .kx9-submenu {
    max-height: 1200px;
    padding-bottom: 8px;
  }

  .kx9-sub-label {
    padding-left: 4px;
  }

  .kx9-chev {
    transform: none !important;
  }

  .kx9-has-sub.kx9-open > a > .kx9-chev {
    transform: rotate(180deg) !important;
  }

  /* Mobile: submenu active link — adjust left border to match accordion border */
  .kx9-submenu a.kx9-sub-active {
    border-left: 3px solid var(--kx9-sub-active-border);
    padding-left: 9px;
  }
}

@media (max-width: 560px) {
  .kx9-nav-inner {
    padding: 0 12px;
    height: 56px;
    --kx9-nav-h: 56px;
    gap: 6px;
  }

  .kx9-topbar-inner {
    justify-content: center;
    text-align: center;
  }

  .kx9-brand {
    font-size: clamp(1rem, 4vw, 1.2rem);
  }

  .kx9-brand-mark {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .kx9-theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 13px;
  }

  .kx9-nav-toggle {
    width: 38px;
    height: 38px;
  }

  .kx9-nav-toggle span {
    width: 18px;
  }
}

@media (max-width: 400px) {
  .kx9-topbar-actions {
    gap: 10px;
  }

  .kx9-theme-toggle {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }

  .kx9-nav-toggle {
    width: 36px;
    height: 36px;
  }

  .kx9-nav-toggle span {
    width: 16px;
  }
}