/* Header styles for CIKABOU LTD */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(20px);
  background: linear-gradient(to bottom, rgba(5, 11, 21, 0.9), rgba(5, 11, 21, 0.8));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}

/* Branding */
.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
}

.site-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 30% 70% 65% 35%;
  background: radial-gradient(circle at 30% 0%, #4fb9ff 0, rgba(31, 116, 255, 0.5) 30%, transparent 65%),
              conic-gradient(from 200deg, #1f74ff, #1dbf73, #1f74ff);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 0 18px rgba(31, 116, 255, 0.7);
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header__logo-name {
  font-family: "Space Grotesk", var(--font-sans);
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header__logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* Navigation */
.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1f74ff, #1dbf73);
  transition: width var(--transition-normal);
}

.site-header__nav-link:hover {
  color: var(--color-text);
}

.site-header__nav-link:hover::after {
  width: 100%;
}

.site-header__nav-item--cta .site-header__nav-link--button {
  padding-inline: 1.1rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: radial-gradient(circle at top left, rgba(31, 116, 255, 0.35), transparent 55%),
              rgba(10, 20, 40, 0.95);
  color: var(--color-text);
  box-shadow: 0 0 0 1px rgba(31, 116, 255, 0.18);
}

.site-header__nav-item--cta .site-header__nav-link--button:hover {
  background: radial-gradient(circle at top left, rgba(31, 116, 255, 0.5), transparent 55%),
              rgba(15, 28, 56, 1);
}

/* Mobile toggle */
.site-header__nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(7, 13, 26, 0.9);
  color: var(--color-text);
}

.site-header__nav-toggle-box {
  position: relative;
  width: 18px;
  height: 14px;
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 3px;
}

.site-header__nav-toggle-bar {
  display: block;
  width: 100%;
  height: 3px;
  border-radius: 999px;
  background-color: #ffffff;
  opacity: 1 !important;
  visibility: visible;
  flex: 0 0 auto;
  transition: transform var(--transition-normal), opacity var(--transition-normal), top var(--transition-normal), bottom var(--transition-normal);
}

/* When menu is open (class added via JS) */
.site-header--menu-open .site-header__nav-toggle-bar:nth-child(1) {
  transform: none !important;
  opacity: 1 !important;
}

.site-header--menu-open .site-header__nav-toggle-bar:nth-child(2) {
  opacity: 1 !important;
  transform: none !important;
}

.site-header--menu-open .site-header__nav-toggle-bar:nth-child(3) {
  transform: none !important;
  opacity: 1 !important;
}

/* Responsive behavior */
@media (max-width: 900px) {
  .site-header__inner {
    padding-block: var(--space-2);
  }

  .site-header__nav-toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 56px;
    background: radial-gradient(circle at top, rgba(31, 116, 255, 0.18), transparent 55%),
                rgba(5, 11, 21, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height var(--transition-slow), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--container-padding-inline) var(--space-6);
    gap: var(--space-3);
  }

  .site-header__nav-link {
    font-size: var(--font-size-md);
  }

  .site-header--menu-open .site-header__nav {
    max-height: 320px;
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 520px) {
  .site-header__logo-tagline {
    display: none;
  }
}

/* Ensure nav is visible without JS on large screens and progressively enhanced on small screens */
@media (min-width: 901px) {
  .site-header__nav {
    opacity: 1 !important;
    transform: none !important;
    max-height: none !important;
    position: static;
    background: transparent;
    border-top: none;
  }
}