/* Header styles for Kravo Lounge */

.kl-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(5, 7, 11, 0.96), rgba(5, 7, 11, 0.9));
  border-bottom: 1px solid var(--color-border-subtle);
}

.kl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

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

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

.kl-header__logo-link::after {
  /* disable base link underline for logo */
  display: none;
}

.kl-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 40px;
  background: radial-gradient(circle at 30% 0, rgba(31, 122, 255, 0.7), transparent 60%),
              radial-gradient(circle at 70% 100%, rgba(22, 196, 127, 0.5), transparent 55%),
              var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-inset-glow);
}

.kl-header__logo-icon {
  font-size: 1.1rem;
  color: #ffffff;
}

.kl-header__logo-text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.kl-header__site-name {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.kl-header__site-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */
.kl-header__nav {
  margin-left: auto;
}

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

.kl-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.4rem 0.1rem;
}

.kl-header__nav-link::after {
  height: 2px;
  bottom: -0.3rem;
}

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

.kl-header__nav-item--cta .kl-header__nav-link--cta {
  --btn-bg: var(--color-primary);
  --btn-color: #ffffff;
  --btn-border: rgba(255, 255, 255, 0.12);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-border);
  background: radial-gradient(circle at top left, rgba(31, 122, 255, 0.3), transparent 55%),
              var(--btn-bg);
  color: var(--btn-color);
  box-shadow: var(--shadow-soft);
}

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

.kl-header__nav-item--cta .kl-header__nav-link--cta:hover,
.kl-header__nav-item--cta .kl-header__nav-link--cta:focus-visible {
  filter: brightness(1.05);
}

/* Mobile toggle */
.kl-header__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(11, 16, 24, 0.9);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  color: var(--color-text);
}

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

/* Mobile layout */
@media (max-width: 768px) {
  .kl-header__inner {
    gap: var(--space-3);
  }

  .kl-header__toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .kl-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 56px;
    background: radial-gradient(circle at top, rgba(31, 122, 255, 0.16), transparent 65%),
                var(--color-background);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

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

  .kl-header__nav-link {
    width: 100%;
  }

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

  .kl-header--open .kl-header__toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

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

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .kl-header__nav {
    transition: none;
  }
  .kl-header__toggle-bar {
    transition: none;
  }
}