/* ============================================
   Navigation — N6 Newspaper Masthead
   Hallmark · macrostructure: nav · tone: editorial · anchor hue: 155
   genre: editorial · family: DraftSOS
   design-system: draftsos-family-design.md
   ============================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-paper);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid var(--border-default);
}

.nav .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
}

/* ── Masthead Row: logo + CTA ── */
.nav-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* ── Logo (prominent wordmark) ── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-paper);
  font-size: 0.75rem;
  font-weight: 700;
}

/* ── Editorial Nav Links (centered below masthead) ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin-top: var(--space-xs);
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
  position: relative;
  font-family: var(--font-body);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* ── CTA (integrated naturally) ── */
.nav-cta {
  padding: 6px 16px;
  font-size: 0.8125rem;
  font-weight: 600;
}

/* ── Masthead Actions (theme toggle + mobile toggle) ── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1;
  transition: color var(--duration-fast) var(--ease-default),
              border-color var(--duration-fast) var(--ease-default);
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }

[data-theme="light"] .theme-toggle .icon-moon,
:root:not([data-theme="dark"]) .theme-toggle .icon-moon { display: block; }

[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* ── Mobile Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast) var(--ease-default);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Dark Mode Nav Overrides ── */
[data-theme="dark"] .nav {
  background: var(--color-void);
  border-bottom-color: var(--border-default);
}

[data-theme="dark"] .nav-links a:hover,
[data-theme="dark"] .nav-links a.active {
  color: var(--text-primary);
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav .container {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }

  .nav-masthead {
    width: auto;
  }

  .nav-actions {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    background: var(--color-paper);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-out);
    z-index: 200;
    margin-top: 0;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.125rem;
  }

  .nav-cta {
    display: none;
  }

  [data-theme="dark"] .nav-links {
    background: var(--color-void);
  }
}