/* Header styles for Slavia Deck */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(5, 8, 18, 0.92), rgba(5, 8, 18, 0.82));
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-8);
  gap: var(--space-8);
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 50%;
  transform: translate(-50%, -150%);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  background: #f6f2ea;
  color: #050812;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  z-index: 50;
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* Brand */

.header-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
}

.brand-mark {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #fff7e4 0, #f1c27d 32%, #12b886 72%, #050812 100%);
  box-shadow: 0 0 0 1px rgba(241, 194, 125, 0.5), 0 12px 30px rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.brand-orb {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 20%, #fff 0, #ffe0b5 30%, #f08c68 70%, #050812 100%);
  box-shadow: 0 0 12px rgba(241, 194, 125, 0.8);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-name {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

/* Navigation */

.site-nav {
  position: relative;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

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

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

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

.nav-cta-btn {
  font-size: var(--font-size-xs);
  padding-inline: 1.1rem;
}

.nav-cta-btn:hover {
  color: var(--color-text);
}

/* Mobile nav toggle */

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(246, 242, 234, 0.16);
  color: var(--color-text);
  background: rgba(22, 27, 42, 0.9);
  cursor: pointer;
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 0.24rem;
}

.nav-toggle-line {
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle-label {
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 3px;
}

/* Toggle active state */

.nav-open .nav-toggle-line:first-child {
  transform: translateY(4px) rotate(42deg);
}

.nav-open .nav-toggle-line:last-child {
  transform: translateY(-4px) rotate(-42deg);
}

/* Layout & responsiveness */

@media (max-width: 767.98px) {
  .header-inner {
    align-items: center;
  }

  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform: translateY(0.3rem);
    padding-inline: var(--space-16);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12);
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(9, 14, 26, 0.98), rgba(15, 20, 36, 0.98));
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-soft);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform-origin: top;
    transform: scaleY(0.96);
    transition: max-height var(--transition-slow), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .nav-list.is-open {
    max-height: 320px;
    opacity: 1;
    transform: scaleY(1);
  }

  .nav-toggle {
    display: inline-flex;
  }
}

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

  .site-nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
  }

  .nav-list {
    background: transparent;
    box-shadow: none;
    border: none;
  }

  .nav-cta {
    margin-left: var(--space-8);
  }
}