/* Header styles for MMI CONSULTANTS LTD */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(26px);
  background: radial-gradient(circle at top left, rgba(15, 98, 254, 0.1), transparent 50%),
              linear-gradient(to bottom, rgba(5, 9, 21, 0.96), rgba(5, 9, 21, 0.86));
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  gap: var(--space-8);
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text);
}

.site-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: radial-gradient(circle at 10% 0, rgba(0, 229, 255, 0.38), transparent 55%),
              linear-gradient(145deg, var(--color-primary), #050915);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.7);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

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

.site-header__logo-name {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.site-header__logo-tagline {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav-item--cta {
  margin-left: var(--space-4);
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.1rem 0;
  text-transform: none;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: width var(--transition-normal);
}

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

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

.site-header__nav-cta {
  padding-inline: 1.4rem;
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background: rgba(5, 9, 21, 0.9);
  cursor: pointer;
  color: var(--color-text);
}

.site-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal),
              opacity var(--transition-normal),
              background-color var(--transition-normal);
}

/* Toggle active state */
.site-header__toggle--active .site-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header__toggle--active .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header__toggle--active .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive layout */
@media (max-width: 960px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform-origin: top;
    background: linear-gradient(to bottom, rgba(5, 9, 21, 0.98), rgba(5, 9, 21, 0.96));
    border-bottom: 1px solid var(--color-border-subtle);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-normal), visibility var(--transition-normal);
  }

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

  .site-header__nav-item--cta {
    margin-left: 0;
    margin-top: var(--space-2);
    width: 100%;
  }

  .site-header__nav-cta {
    width: 100%;
    justify-content: center;
  }

  .site-header__nav--open {
    max-height: 420px;
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 640px) {
  .site-header__logo-name {
    font-size: 0.8rem;
  }

  .site-header__logo-tagline {
    display: none;
  }
}