/* ChromaXP — Premium header & navigation (2026) */

:root {
  --header-h: 68px;
  --header-z: 200;
  --nav-accent: #2563eb;
  --nav-accent-2: #7c3aed;
  --nav-glass: rgba(255, 255, 255, 0.72);
  --nav-border: rgba(148, 163, 184, 0.25);
  --nav-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --nav-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme='dark'] {
  --nav-glass: rgba(15, 17, 24, 0.82);
  --nav-border: rgba(148, 163, 184, 0.12);
  --nav-shadow: 0 4px 28px rgba(0, 0, 0, 0.45);
}

/* —— Shell —— */
.cx-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--header-z);
  background: var(--nav-glass);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--nav-border);
  transition:
    background 0.3s var(--nav-ease),
    box-shadow 0.3s var(--nav-ease),
    border-color 0.3s var(--nav-ease);
}

.cx-header.is-scrolled {
  box-shadow: var(--nav-shadow);
  border-bottom-color: rgba(37, 99, 235, 0.15);
}

.cx-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 1440px;
  margin-inline: auto;
  padding: 0.65rem 1rem;
  min-height: var(--header-h);
}

@media (min-width: 768px) {
  .cx-header__inner {
    padding-inline: 1.25rem;
  }
}

/* —— Logo —— */
.cx-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-display, 'Inter', system-ui, sans-serif);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.035em;
  flex-shrink: 0;
  transition: opacity 0.2s var(--nav-ease);
}

.cx-logo:hover {
  opacity: 0.88;
}

.cx-logo:focus-visible {
  outline: 2px solid var(--nav-accent);
  outline-offset: 4px;
  border-radius: 8px;
}

.cx-logo__icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: block;
  object-fit: contain;
  border-radius: 8px;
}

.cx-logo__text strong {
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #06b6d4 75%, #f59e0b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}

/* —— Desktop nav —— */
.cx-nav {
  display: none;
}

@media (min-width: 1100px) {
  .cx-nav {
    display: block;
    flex: 1;
    min-width: 0;
    margin-inline: 0.5rem 1rem;
  }
}

.cx-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 0.1rem;
}

.cx-nav__item {
  position: relative;
  flex-shrink: 0;
}

@media (min-width: 1100px) and (max-width: 1319px) {
  .cx-nav__link {
    padding: 0.4rem 0.5rem;
    font-size: 0.75rem;
    gap: 0.2rem;
  }

  .cx-nav__list .cx-icon-chevron {
    width: 12px;
    height: 12px;
  }

  .cx-nav {
    margin-inline: 0.35rem 0.65rem;
  }
}

.cx-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.45rem 0.65rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color 0.2s var(--nav-ease),
    background 0.2s var(--nav-ease),
    box-shadow 0.2s var(--nav-ease);
}

a.cx-nav__link:hover,
button.cx-nav__link:hover,
.cx-nav__link:focus-visible {
  color: var(--nav-accent);
  background: rgba(37, 99, 235, 0.08);
}

.cx-nav__link.is-active {
  color: var(--nav-accent);
  background: rgba(37, 99, 235, 0.12);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.2);
}

.cx-icon-chevron {
  width: 14px;
  height: 14px;
  opacity: 0.55;
  transition: transform 0.2s var(--nav-ease);
}

.cx-nav__item--dropdown.is-open .cx-icon-chevron,
.cx-nav__item--dropdown:hover .cx-icon-chevron {
  transform: rotate(180deg);
}

/* —— Dropdowns —— */
.cx-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(6px) scale(0.98);
  min-width: 240px;
  max-width: min(320px, 90vw);
  padding: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: 14px;
  box-shadow:
    0 12px 40px rgba(15, 23, 42, 0.12),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.22s var(--nav-ease),
    visibility 0.22s var(--nav-ease),
    transform 0.22s var(--nav-ease);
  z-index: calc(var(--header-z) + 10);
}

[data-theme='dark'] .cx-dropdown {
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.cx-nav__item--dropdown:hover .cx-dropdown,
.cx-nav__item--dropdown:focus-within .cx-dropdown,
.cx-nav__item--dropdown.is-open .cx-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
}

.cx-dropdown__grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cx-dropdown__item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s var(--nav-ease);
}

.cx-dropdown__item:hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--text-primary);
  transform: translateX(2px);
}

.cx-dropdown__icon {
  font-size: 1.1rem;
  line-height: 1;
}

.cx-dropdown__cta {
  margin-top: 0.35rem;
  padding: 0.6rem 0.7rem;
  border-top: 1px solid var(--bg-border);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--nav-accent);
  text-align: center;
  text-decoration: none;
  display: block;
  border-radius: 0 0 8px 8px;
  transition: background 0.15s;
}

.cx-dropdown__cta:hover {
  background: rgba(37, 99, 235, 0.06);
}

.cx-dropdown a:not(.cx-dropdown__item):not(.cx-dropdown__cta) {
  display: block;
  padding: 0.45rem 0.7rem;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
}

.cx-dropdown a:not(.cx-dropdown__item):not(.cx-dropdown__cta):hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--text-primary);
}

/* —— Header actions —— */
.cx-header__actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.cx-header__cta {
  display: none;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 10px;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #06b6d4 75%, #f59e0b 100%);
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.35);
  transition:
    transform 0.2s var(--nav-ease),
    box-shadow 0.2s var(--nav-ease);
}

.cx-header__cta:hover,
.cx-header__cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
  color: #fff;
}

/* Beat global [data-theme] link colors (hcc-design.css) */
[data-theme='light'] a.cx-header__cta,
[data-theme='light'] a.cx-header__cta:hover,
[data-theme='light'] a.cx-header__cta:focus-visible,
[data-theme='dark'] a.cx-header__cta,
[data-theme='dark'] a.cx-header__cta:hover,
[data-theme='dark'] a.cx-header__cta:focus-visible {
  color: #fff;
  -webkit-text-fill-color: #fff;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #06b6d4 75%, #f59e0b 100%);
}

@media (min-width: 900px) {
  .cx-header__cta {
    display: inline-flex;
  }
}

.cx-search-trigger {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  min-width: 140px;
  max-width: 200px;
  background: var(--bg-elevated);
  border: 1px solid var(--bg-border);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s var(--nav-ease);
}

@media (min-width: 768px) {
  .cx-search-trigger {
    display: inline-flex;
  }
}

@media (min-width: 1100px) and (max-width: 1319px) {
  .cx-search-trigger {
    min-width: auto;
    max-width: none;
    padding: 0.45rem 0.55rem;
  }

  .cx-search-trigger__text,
  .cx-search-trigger kbd {
    display: none;
  }

  .cx-header__cta {
    padding: 0.45rem 0.7rem;
    font-size: 0.75rem;
  }
}

.cx-search-trigger:hover,
.cx-search-trigger:focus-visible {
  border-color: var(--nav-accent);
  color: var(--text-secondary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.cx-search-trigger kbd {
  margin-left: auto;
  padding: 0.12rem 0.4rem;
  font-size: 0.65rem;
  font-family: inherit;
  background: var(--bg-surface);
  border-radius: 5px;
  border: 1px solid var(--bg-border);
  color: var(--text-muted);
}

.cx-theme-toggle,
.cx-mobile-menu-trigger {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--bg-border);
  border-radius: 10px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s var(--nav-ease);
}

.cx-theme-toggle:hover,
.cx-mobile-menu-trigger:hover,
.cx-theme-toggle:focus-visible,
.cx-mobile-menu-trigger:focus-visible {
  color: var(--nav-accent);
  border-color: rgba(37, 99, 235, 0.35);
  background: rgba(37, 99, 235, 0.06);
}

.cx-theme-toggle .cx-icon-sun,
.cx-theme-toggle .cx-icon-moon {
  width: 20px;
  height: 20px;
}

[data-theme='dark'] .cx-icon-sun {
  display: none;
}

[data-theme='light'] .cx-icon-moon {
  display: none;
}

.cx-mobile-menu-trigger {
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

@media (min-width: 1100px) {
  .cx-mobile-menu-trigger {
    display: none;
  }
}

.cx-mobile-menu-trigger span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition:
    transform 0.25s var(--nav-ease),
    opacity 0.2s var(--nav-ease);
}

.cx-mobile-menu-trigger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.cx-mobile-menu-trigger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.cx-mobile-menu-trigger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* —— Mobile backdrop & drawer —— */
.cx-mobile-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--header-z) - 1);
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--nav-ease), visibility 0.3s;
}

.cx-mobile-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.cx-mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: var(--header-z);
  width: min(100%, 360px);
  height: 100dvh;
  background: var(--bg-surface);
  border-left: 1px solid var(--bg-border);
  box-shadow: -12px 0 48px rgba(15, 23, 42, 0.15);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.35s var(--nav-ease), visibility 0.35s;
  overflow: hidden;
}

.cx-mobile-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

@media (min-width: 1100px) {
  .cx-mobile-drawer,
  .cx-mobile-backdrop {
    display: none !important;
  }
}

.cx-mobile-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--bg-border);
  flex-shrink: 0;
}

.cx-mobile-drawer__title {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cx-mobile-drawer__close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--bg-border);
  border-radius: 10px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
}

.cx-mobile-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.15rem 2rem;
  -webkit-overflow-scrolling: touch;
}

.cx-mobile-drawer__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #06b6d4 75%, #f59e0b 100%);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

[data-theme='light'] a.cx-mobile-drawer__cta,
[data-theme='light'] a.cx-mobile-drawer__cta:hover,
[data-theme='light'] a.cx-mobile-drawer__cta:focus-visible,
[data-theme='dark'] a.cx-mobile-drawer__cta,
[data-theme='dark'] a.cx-mobile-drawer__cta:hover,
[data-theme='dark'] a.cx-mobile-drawer__cta:focus-visible {
  color: #fff;
  -webkit-text-fill-color: #fff;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 40%, #06b6d4 75%, #f59e0b 100%);
}

.cx-mobile-nav-group {
  border: 1px solid var(--bg-border);
  border-radius: 12px;
  margin-bottom: 0.5rem;
  overflow: hidden;
  background: var(--bg-elevated);
}

.cx-mobile-nav-group summary {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cx-mobile-nav-group summary::-webkit-details-marker {
  display: none;
}

.cx-mobile-nav-group summary::after {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform 0.2s;
}

.cx-mobile-nav-group[open] summary::after {
  transform: rotate(-135deg);
}

.cx-mobile-nav-group__links {
  padding: 0 0.5rem 0.5rem;
}

.cx-mobile-nav-group__links a {
  display: block;
  padding: 0.55rem 0.65rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
}

.cx-mobile-nav-group__links a:hover,
.cx-mobile-nav-group__links a.is-active {
  background: rgba(37, 99, 235, 0.1);
  color: var(--nav-accent);
}

.cx-mobile-drawer__link {
  display: block;
  padding: 0.75rem 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--bg-border);
}

body.cx-nav-open {
  overflow: hidden;
}

/* —— Search modal —— */
.cx-search-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: min(18vh, 140px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s var(--nav-ease);
}

.cx-search-modal.is-open {
  pointer-events: auto;
  opacity: 1;
}

.cx-search-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
}

.cx-search-modal__panel {
  position: relative;
  width: calc(100% - 2rem);
  max-width: 560px;
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.2);
  overflow: hidden;
  transform: translateY(-12px) scale(0.98);
  transition: transform 0.25s var(--nav-ease);
}

.cx-search-modal.is-open .cx-search-modal__panel {
  transform: translateY(0) scale(1);
}

.cx-search-modal__label {
  display: block;
  padding: 0.85rem 1.15rem 0;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.cx-search-modal input[type='search'] {
  width: 100%;
  padding: 0.75rem 1.15rem 1.15rem;
  font-size: 1.0625rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
}

.cx-search-modal input:focus {
  outline: none;
}

.cx-search-results {
  max-height: 50vh;
  overflow-y: auto;
  border-top: 1px solid var(--bg-border);
}

.cx-search-results:empty {
  display: none;
}

.cx-search-result {
  display: block;
  padding: 0.85rem 1.15rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--bg-border);
  font-size: 0.875rem;
  transition: background 0.15s;
}

.cx-search-result:hover {
  background: rgba(37, 99, 235, 0.08);
  color: var(--text-primary);
}

.cx-search-result strong {
  color: var(--nav-accent);
  font-weight: 600;
}