/* ============================================================
   Z PLUS ENTERPRISES — HEADER
   header.css
   ============================================================ */

/* ── SITE HEADER ────────────────────────────────────────────── */

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  transition: background var(--t-slow), box-shadow var(--t-slow), padding var(--t-slow);
  padding-block: 22px;
}

/* Transparent mode — over hero */
.site-header--transparent {
  background: transparent;
}

/* Solid mode — after scroll */
.site-header--solid {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 1px 0 var(--c-border);
  padding-block: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ── HEADER INNER ───────────────────────────────────────────── */

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

/* ── LOGO ───────────────────────────────────────────────────── */

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  flex-shrink: 0;
  color: inherit;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--c-primary);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: var(--fw-bold);
  color: #fff;
  letter-spacing: -0.5px;
  flex-shrink: 0;
  transition: background var(--t-base);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: 13px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.01em;
  color: var(--c-ink);
  transition: color var(--t-base);
}

.logo-tagline {
  font-size: 9px;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--c-muted);
  transition: color var(--t-base);
}

/* Logo on transparent header */
.site-header--transparent .logo-name,
.site-header--transparent .logo-mark + .logo-text .logo-name {
  color: #fff;
}

.site-header--transparent .logo-mark {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
}

.site-header--transparent .logo-tagline {
  color: rgba(255,255,255,0.5);
}

.site-logo:hover .logo-mark {
  background: var(--c-accent);
}

/* ── MAIN NAVIGATION ────────────────────────────────────────── */

.main-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: 7px 14px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
  color: var(--c-body);
  text-decoration: none;
  border-radius: var(--radius-xs);
  transition: color var(--t-base), background var(--t-base);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--c-primary);
  background: var(--c-primary-lt);
}

.nav-link.active {
  color: var(--c-primary);
  font-weight: var(--fw-semibold);
}

/* Nav links on transparent header */
.site-header--transparent .nav-link {
  color: rgba(255,255,255,0.85);
}

.site-header--transparent .nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ── HEADER CTA ─────────────────────────────────────────────── */

.header-cta {
  margin-left: var(--sp-4);
  flex-shrink: 0;
}

/* CTA on transparent header — white outline */
.site-header--transparent .header-cta .btn--primary {
  background: transparent;
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}

.site-header--transparent .header-cta .btn--primary:hover {
  background: #fff;
  border-color: #fff;
  color: var(--c-ink);
}

/* ── MENU TOGGLE (mobile) ───────────────────────────────────── */

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  border-radius: var(--radius-xs);
  transition: background var(--t-base);
}

.menu-toggle:hover {
  background: rgba(0,0,0,0.05);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-ink);
  border-radius: 2px;
  transition: all var(--t-base);
  transform-origin: center;
}

.site-header--transparent .menu-toggle span {
  background: #fff;
}

/* Open state */
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── MOBILE NAV OVERLAY ─────────────────────────────────────── */

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--c-dark-bg);
  z-index: calc(var(--z-sticky) - 1);
  display: flex;
  flex-direction: column;
  padding: 100px var(--container-px) var(--sp-12);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-slow);
  overflow-y: auto;
}

.mobile-nav.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav-list li {
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transform: translateY(20px);
  opacity: 0;
  transition: transform var(--t-slow), opacity var(--t-slow);
}

.mobile-nav.is-open .mobile-nav-list li {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav.is-open .mobile-nav-list li:nth-child(1) { transition-delay: 60ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(2) { transition-delay: 100ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(3) { transition-delay: 140ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(4) { transition-delay: 180ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(5) { transition-delay: 220ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(6) { transition-delay: 260ms; }
.mobile-nav.is-open .mobile-nav-list li:nth-child(7) { transition-delay: 300ms; }

.mobile-nav-link {
  display: block;
  padding: var(--sp-5) 0;
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  letter-spacing: var(--ls-tight);
  transition: color var(--t-base);
}

.mobile-nav-link:hover {
  color: #fff;
}

.mobile-nav-cta {
  margin-top: var(--sp-10);
}

.mobile-nav-contact {
  margin-top: var(--sp-10);
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav-contact a {
  display: block;
  color: rgba(255,255,255,0.5);
  font-size: var(--fs-sm);
  padding: var(--sp-2) 0;
  text-decoration: none;
  transition: color var(--t-base);
}

.mobile-nav-contact a:hover {
  color: #fff;
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .main-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .logo-text {
    display: none;
  }

  .site-header {
    padding-block: 16px;
  }
}

/* ── THINKLANE HEADER ───────────────────────────────────────── */
.site-header--thinklane {
  background: var(--c-thinklane, #EF3239);
  box-shadow: none;
  padding-block: 14px;
}
.site-header--thinklane .nav-link,
.site-header--thinklane .logo-name {
  color: rgba(255,255,255,0.9);
}
.site-header--thinklane .nav-link:hover,
.site-header--thinklane .nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
}
.site-header--thinklane .logo-tagline {
  color: rgba(255,255,255,0.6);
}
.site-header--thinklane .logo-mark {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
}
.site-logo:hover .logo-mark {
  background: rgba(255,255,255,0.25);
}
.site-header--thinklane .header-cta .btn--primary {
  background: #fff;
  color: var(--c-thinklane, #EF3239);
  border: 1px solid #fff;
}
.site-header--thinklane .header-cta .btn--primary:hover {
  background: #f8f8f8;
}
.site-header--thinklane .menu-toggle span {
  background: #fff;
}