/* Header styles for Event Flow Group */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.96), rgba(5, 6, 10, 0.88));
  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);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, var(--color-primary-strong), transparent 60%),
              radial-gradient(circle at 70% 80%, var(--color-accent), transparent 65%),
              #05060a;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.site-header__logo-chip {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 2px rgba(244, 194, 91, 0.9);
  position: relative;
}

.site-header__logo-chip::before,
.site-header__logo-chip::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px dashed rgba(244, 194, 91, 0.7);
}

.site-header__logo-chip::after {
  inset: 9px;
  border-style: solid;
  border-color: rgba(230, 57, 70, 0.8);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-header__brand-name {
  font-family: var(--font-family-heading);
  font-weight: 600;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.site-header__brand-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

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

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  padding-inline: 0.25rem;
  padding-block: 0.2rem;
  color: var(--color-text-muted);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.site-header__nav-link:focus-visible::after,
.site-header__nav-link:hover::after {
  transform: scaleX(1);
}

.site-header__nav-link--cta {
  padding-inline: 1.1rem;
  padding-block: 0.5rem;
  border-radius: var(--radius-pill);
  background-image: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #050509;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  box-shadow: var(--shadow-soft);
}

.site-header__nav-link--cta::after {
  display: none;
}

.site-header__nav-item--cta {
  margin-left: var(--space-2);
}

.site-header__nav-link--cta:hover,
.site-header__nav-link--cta:focus-visible {
  box-shadow: var(--shadow-strong);
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background-color: rgba(8, 9, 18, 0.9);
  color: var(--color-text);
  cursor: pointer;
}

.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), width var(--transition-normal);
}

/* Mobile layout */
@media (max-width: 768px) {
  .site-header__inner {
    padding-block: var(--space-2);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 56px;
    background: radial-gradient(circle at top, rgba(244, 194, 91, 0.06) 0, transparent 55%),
                rgba(5, 6, 10, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
  }

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

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

  .site-header__nav-link--cta {
    display: inline-flex;
    justify-content: center;
    width: 100%;
  }

  .site-header--menu-open .site-header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-header--menu-open .site-header__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header--menu-open .site-header__toggle-bar:nth-child(2) {
    opacity: 0;
    width: 0;
  }

  .site-header--menu-open .site-header__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (max-width: 480px) {
  .site-header__brand-tagline {
    display: none;
  }
}

/* Fallback when JS disabled: keep menu visible on mobile */
.no-js .site-header__nav {
  position: static;
  transform: none !important;
  opacity: 1 !important;
  visibility: visible !important;
  border-bottom: none;
  background: transparent;
}

.no-js .site-header__toggle {
  display: none !important;
}