/* Header styles for ARBOR-ZA Zofia Kubica */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(2, 6, 23, 0.96),
    rgba(2, 6, 23, 0.82)
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.45);
}

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

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

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.site-header__logo-mark {
  position: relative;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 30% 20%, #22c55e 0, #4f46e5 45%, #020617 100%);
  box-shadow: var(--shadow-glow-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.site-header__logo-chip {
  position: absolute;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
  border: 2px solid rgba(15, 23, 42, 0.9);
}

.site-header__logo-chip--poker {
  left: 0.2rem;
  top: 0.65rem;
  background: radial-gradient(circle, var(--color-chip-poker), #15803d);
}

.site-header__logo-chip--social {
  right: 0.1rem;
  bottom: 0.35rem;
  background: radial-gradient(circle, var(--color-chip-social), #0369a1);
}

.site-header__text-group {
  display: flex;
  flex-direction: column;
}

.site-header__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-tight);
}

.site-header__subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

/* Nav */

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-inline: 0.9rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
  white-space: nowrap;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 0.18rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #6366f1, #22c55e);
  transform-origin: center;
  transform: scaleX(0);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-gray-50);
  background: rgba(15, 23, 42, 0.85);
}

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

.site-header__nav-link--cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #f9fafb;
  box-shadow: var(--shadow-sm);
}

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

.site-header__nav-link--cta:hover,
.site-header__nav-link--cta:focus-visible {
  background: linear-gradient(135deg, var(--color-primary-strong), #22c55e);
}

/* Mobile toggle */

.site-header__toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 0.85rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-gray-100);
}

.site-header__toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 0.18rem;
}

.site-header__toggle-line {
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-gray-100);
  transition: transform var(--transition-fast), opacity var(--transition-fast), translate var(--transition-fast);
}

.site-header__toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* Mobile layout */

@media (max-width: 880px) {
  .site-header__inner {
    padding-block: var(--space-2);
  }

  .site-header__subtitle {
    display: none;
  }

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

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
    border-bottom: 1px solid rgba(148, 163, 184, 0.5);
    transform-origin: top;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--transition-slow), opacity var(--transition-slow);
  }

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

  .site-header__nav-link {
    width: 100%;
    padding-block: 0.6rem;
  }

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

  .site-header__nav--open {
    max-height: 18rem;
    opacity: 1;
  }

  .site-header__toggle--open .site-header__toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }

  .site-header__toggle--open .site-header__toggle-line:nth-child(2) {
    opacity: 0;
  }

  .site-header__toggle--open .site-header__toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
  }
}

@media (max-width: 480px) {
  .site-header__title {
    font-size: var(--font-size-base);
  }
}