/* Header styles for Kitlinea */

.kl-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-xs);
}

.kl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.kl-header__brand-wrap {
  flex-shrink: 0;
}

.kl-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-text);
  text-decoration: none;
}

.kl-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  box-shadow: var(--shadow-xs);
}

.kl-header__logo-mark i {
  font-size: 1rem;
}

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

.kl-header__site-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
}

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

/* Navigation */
.kl-header__nav {
  flex: 1 1 auto;
}

.kl-header__nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-10);
}

.kl-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  padding: 0.25rem 0;
}

.kl-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

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

/* Actions */
.kl-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.kl-header__action-btn--desktop {
  display: none;
}

.kl-header__icon-btn {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  cursor: pointer;
  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}

.kl-header__icon-btn:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary-soft);
  box-shadow: var(--shadow-xs);
  transform: translateY(-1px);
}

.kl-header__icon-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.kl-header__icon-btn i {
  font-size: 0.95rem;
}

/* Mobile nav toggle */
.kl-header__nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.kl-header__nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}

.kl-header__nav-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.kl-header__nav-toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Mobile-first: nav collapsed */
@media (max-width: 767.98px) {
  .kl-header__inner {
    align-items: center;
  }

  .kl-header__nav {
    position: fixed;
    inset: 0;
    top: 56px;
    background-color: rgba(32, 33, 36, 0.35);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
  }

  .kl-header__nav-list {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    max-width: 260px;
    width: 82%;
    padding: var(--space-20) var(--space-16);
    background-color: var(--color-surface);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
  }

  .kl-header__nav-link {
    font-size: var(--font-size-md);
  }

  .kl-header--nav-open .kl-header__nav {
    opacity: 1;
    pointer-events: auto;
  }

  .kl-header--nav-open .kl-header__nav-toggle-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

  .kl-header--nav-open .kl-header__nav-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .kl-header--nav-open .kl-header__nav-toggle-line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
  }
}

/* Desktop layout */
@media (min-width: 768px) {
  .kl-header__inner {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }

  .kl-header__nav-toggle {
    display: none;
  }

  .kl-header__nav {
    display: block;
  }

  .kl-header__nav-list {
    justify-content: flex-start;
  }

  .kl-header__actions {
    gap: var(--space-6);
  }

  .kl-header__action-btn--desktop {
    display: inline-flex;
  }
}

/* Larger screens */
@media (min-width: 1024px) {
  .kl-header__inner {
    gap: var(--space-16);
  }

  .kl-header__nav-list {
    gap: var(--space-12);
  }
}