/*
 * Zynovix AI shared site shell
 * Version: 2026-07-23
 *
 * Loaded after page-level styles to keep the public header, footer,
 * navigation, focus states, and common controls consistent.
 */

:root {
  --zx-shell-width: 1500px;
  --zx-header-height: 78px;
  --zx-bg-deep: #050816;
  --zx-bg-panel: #0b1228;
  --zx-text: #f8fafc;
  --zx-muted: #a8b5c7;
  --zx-line: rgba(148, 163, 184, 0.2);
  --zx-cyan: #22d3ee;
  --zx-blue: #2563eb;
  --zx-purple: #7c3aed;
  --zx-focus: #67e8f9;
  --zx-radius: 16px;
  --zx-shadow: 0 18px 55px rgba(0, 0, 0, 0.3);
}

html {
  scroll-padding-top: calc(var(--zx-header-height) + 18px);
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
}

img,
svg {
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

/* Shared public header */
:is(.header, .site-header) {
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: var(--zx-header-height);
  border-bottom: 1px solid var(--zx-line);
  background: rgba(5, 8, 22, 0.9);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.16);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.header .nav,
.site-header .header-inner {
  width: min(var(--zx-shell-width), 96%);
  min-height: var(--zx-header-height);
  height: auto;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

:is(.header, .site-header) .brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
  color: var(--zx-text);
  font-weight: 900;
  line-height: 1.1;
  text-decoration: none;
}

:is(.header, .site-header) .brand img,
:is(.footer, .site-footer) .brand img {
  width: 52px !important;
  height: 52px !important;
  flex: 0 0 52px !important;
  display: block;
  object-fit: contain;
  padding: 2px;
  border-radius: 11px !important;
  background: #fff;
}

:is(.nav-menu, .main-nav) {
  align-items: center;
  gap: clamp(18px, 2vw, 28px);
}

:is(.nav-menu, .main-nav) > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 0;
  color: #dbe5f3;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  transition: color 0.2s ease;
}

:is(.nav-menu, .main-nav) > a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--zx-blue), var(--zx-cyan));
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

:is(.nav-menu, .main-nav) > a:hover,
:is(.nav-menu, .main-nav) > a[aria-current="page"] {
  color: var(--zx-focus);
}

:is(.nav-menu, .main-nav) > a:hover::after,
:is(.nav-menu, .main-nav) > a[aria-current="page"]::after {
  transform: scaleX(1);
}

:is(.nav-menu, .main-nav) .nav-cta {
  min-height: 46px;
  padding: 11px 21px;
  border: 1px solid rgba(103, 232, 249, 0.32);
  border-radius: 999px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--zx-blue), #168fe8, var(--zx-cyan));
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.3);
  font-weight: 800;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

:is(.nav-menu, .main-nav) .nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(37, 99, 235, 0.4);
}

:is(.header, .site-header) .menu-btn {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--zx-line);
  border-radius: 13px;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  font: inherit;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
}

/* Common interaction states */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--zx-focus);
  outline-offset: 3px;
}

:where(.btn, .nav-cta, button) {
  touch-action: manipulation;
}

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 14px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

@media (hover: hover) {
  .btn:hover {
    transform: translateY(-2px);
  }
}

.card:focus-within,
.tool-card:focus-within,
.article-card:focus-within {
  border-color: rgba(34, 211, 238, 0.68);
}

/* Shared breadcrumbs and author modules */
.breadcrumb {
  color: var(--zx-muted);
}

.breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--zx-focus);
}

.author-box {
  border-color: var(--zx-line) !important;
  border-radius: 24px !important;
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.92), rgba(8, 13, 31, 0.92)) !important;
  box-shadow: var(--zx-shadow);
}

/* Shared public footer */
:is(.footer, .site-footer) {
  border-top: 1px solid var(--zx-line);
  padding: 38px 0;
  color: var(--zx-text);
  background: rgba(2, 6, 23, 0.72);
}

:is(.footer, .site-footer) .footer-inner {
  width: min(var(--zx-shell-width), 96%);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 22px;
}

:is(.footer, .site-footer) .footer-brand-group,
:is(.footer, .site-footer) .footer-brand-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

:is(.footer, .site-footer) .footer-links {
  display: flex;
  justify-self: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  color: #cbd5e1;
}

:is(.footer, .site-footer) .footer-links a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: color 0.2s ease;
}

:is(.footer, .site-footer) .footer-links a:hover {
  color: var(--zx-focus);
}

:is(.footer, .site-footer) .footer-inner > :last-child {
  justify-self: end;
  margin: 0;
  color: var(--zx-muted);
  text-align: right;
}

@media (min-width: 721px) {
  :is(.header, .site-header) :is(.nav-menu, .main-nav) {
    display: flex !important;
  }

  :is(.header, .site-header) .menu-btn {
    display: none !important;
  }
}

@media (max-width: 720px) {
  :root {
    --zx-header-height: 72px;
  }

  body.nav-open {
    overflow: hidden;
  }

  .header .nav,
  .site-header .header-inner {
    position: relative;
    width: min(94%, 680px);
    min-height: var(--zx-header-height);
  }

  :is(.header, .site-header) .brand img {
    width: 46px !important;
    height: 46px !important;
    flex-basis: 46px !important;
  }

  :is(.header, .site-header) .menu-btn {
    display: grid !important;
  }

  :is(.header, .site-header) :is(.nav-menu, .main-nav) {
    position: absolute !important;
    top: calc(100% + 10px) !important;
    right: 0 !important;
    left: 0 !important;
    z-index: 1100;
    display: none !important;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 5px;
    padding: 15px;
    border: 1px solid var(--zx-line);
    border-radius: 18px;
    background: rgba(8, 13, 31, 0.98);
    box-shadow: var(--zx-shadow);
  }

  :is(.header, .site-header) :is(.nav-menu, .main-nav).active {
    display: flex !important;
  }

  :is(.nav-menu, .main-nav) > a {
    width: 100%;
    min-height: 46px;
    padding: 11px 12px;
    border-radius: 11px;
  }

  :is(.nav-menu, .main-nav) > a:not(.nav-cta)::after {
    display: none;
  }

  :is(.nav-menu, .main-nav) > a:hover,
  :is(.nav-menu, .main-nav) > a[aria-current="page"] {
    background: rgba(34, 211, 238, 0.08);
  }

  :is(.nav-menu, .main-nav) .nav-cta {
    margin-top: 4px;
  }

  :is(.footer, .site-footer) .footer-inner {
    width: min(92%, 680px);
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 18px;
  }

  :is(.footer, .site-footer) .footer-links {
    justify-self: start;
    justify-content: flex-start;
  }

  :is(.footer, .site-footer) .footer-inner > :last-child {
    justify-self: start;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :is(.header, .site-header, .footer, .site-footer) {
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}