/**
 * Techno Throne – Global header (SaaS-style)
 * Sticky, white background, shadow on scroll, center nav, CTA, mobile hamburger
 */

/* Header wrapper */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #ffffff;
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
}

/* Inner container – max-width, generous horizontal padding */
.site-header__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

@media (min-width: 768px) {
  .site-header__inner {
    padding: 1.25rem 2rem;
  }
}

/* Logo (left) */
.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #111827;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.site-header__logo:hover {
  color: #1d4ed8;
}

.site-header__logo-icon {
  width: 32px;
  height: 32px;
  color: #2563eb;
  flex-shrink: 0;
}

/* Center navigation – hidden on mobile, visible from md up */
.site-header__nav {
  display: none;
}

@media (min-width: 768px) {
  .site-header__nav {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    max-width: 560px;
  }
}

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-header__nav-link {
  text-decoration: none;
  color: #4b5563;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.25rem 0;
  transition: color 0.15s ease;
}

.site-header__nav-link:hover {
  color: #1d4ed8;
}

/* CTA (right) */
.site-header__cta-wrap {
  flex-shrink: 0;
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  background: #111827;
  color: #ffffff;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

.site-header__cta:hover {
  background: #1f2937;
}

.site-header__cta:active {
  transform: scale(0.98);
}

/* Hamburger button (mobile only) */
.site-header__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: #374151;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

@media (min-width: 768px) {
  .site-header__menu-btn {
    display: none;
  }
}

.site-header__menu-btn:hover {
  background: #f3f4f6;
  color: #111827;
}

.site-header__menu-btn[aria-expanded="true"] .site-header__menu-icon--open {
  display: none;
}

.site-header__menu-btn[aria-expanded="true"] .site-header__menu-icon--close {
  display: block;
}

.site-header__menu-icon--close {
  display: none;
}

/* Mobile menu overlay */
.site-header__mobile-nav {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.site-header__mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 768px) {
  .site-header__mobile-nav {
    display: none;
  }
}

/* Mobile menu panel */
.site-header__mobile-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 100%);
  height: 100%;
  background: #ffffff;
  z-index: 999;
  padding: 5rem 1.5rem 2rem;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.08);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  overflow-y: auto;
}

.site-header__mobile-nav.is-open .site-header__mobile-panel {
  transform: translateX(0);
}

.site-header__mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__mobile-list li {
  border-bottom: 1px solid #f3f4f6;
}

.site-header__mobile-list .site-header__nav-link {
  display: block;
  padding: 1rem 0;
  font-size: 1rem;
}

.site-header__mobile-cta {
  margin-top: 1.5rem;
}

.site-header__mobile-cta .site-header__cta {
  width: 100%;
  padding: 0.875rem 1.25rem;
}

/* Prevent body scroll when mobile menu open */
body.site-header--menu-open {
  overflow: hidden;
}