/* Header styles for Card Night Kitchen */

.cnk-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 13, 0.96), rgba(5, 7, 13, 0.75));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

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

.cnk-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
}

.cnk-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 30%, var(--color-primary-strong), var(--color-primary));
  box-shadow: var(--shadow-soft);
  font-size: 1rem;
}

.cnk-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.cnk-header__logo-primary {
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cnk-header__logo-secondary {
  font-size: 1.05rem;
}

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

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

.cnk-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cnk-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-medium);
}

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

.cnk-header__nav-item--primary .cnk-header__nav-link--button {
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: radial-gradient(circle at 0 0, rgba(230, 57, 70, 0.35), transparent 55%);
  color: var(--color-text);
  font-weight: 600;
}

.cnk-header__nav-item--primary .cnk-header__nav-link--button:hover {
  background: radial-gradient(circle at 100% 0, rgba(255, 77, 90, 0.45), transparent 55%);
  color: #fff;
}

/* Toggle button (mobile burger) */
.cnk-header__toggle {
  display: none;
  width: 40px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background-color: rgba(5, 7, 13, 0.8);
  padding: 0 0.5rem;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  color: var(--color-text);
}

.cnk-header__toggle-bar {
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.cnk-header__toggle.is-open .cnk-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(40deg);
}

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

.cnk-header__toggle.is-open .cnk-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-40deg);
}

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

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

  .cnk-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 56px;
    background: radial-gradient(circle at top, rgba(5, 7, 13, 0.98), rgba(5, 7, 13, 0.96));
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-medium), opacity var(--transition-medium), visibility var(--transition-medium);
  }

  .cnk-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
    gap: var(--space-3);
  }

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

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

/* Larger screens */
@media (min-width: 769px) {
  .cnk-header__nav-list {
    gap: var(--space-5);
  }

  .cnk-header__nav-item--primary .cnk-header__nav-link--button {
    margin-left: var(--space-2);
  }
}

body.cnk-nav-open {
  overflow: hidden;
}