/* nav.css — Shared navigation chrome styles.
 *
 * Uses design tokens from tokens.css. Responsive: horizontal bar on desktop,
 * hamburger menu on mobile (<768px).
 */

.rd-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  min-height: 48px;
  position: relative;
}

.rd-nav__logo {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent-rust);
  text-decoration: none;
  flex-shrink: 0;
}

/* Desktop links */
.rd-nav__links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-1);
  flex: 1;
}

.rd-nav__link {
  display: block;
  padding: var(--space-1) var(--space-3);
  border-radius: 4px;
  color: var(--color-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.rd-nav__link:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}

.rd-nav__link--active {
  background: var(--color-accent-teal);
  color: #fff;
  font-weight: 500;
}

/* Right-side actions */
.rd-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
  flex-shrink: 0;
}

.rd-nav__theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1;
}

.rd-nav__theme-toggle:hover {
  background: var(--color-bg);
}

.rd-nav__user {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Hamburger — hidden on desktop */
.rd-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  background: none;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
}

.rd-nav__hamburger-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: transform 0.2s;
}

/* Mobile: <768px */
@media (max-width: 767px) {
  .rd-nav__hamburger {
    display: flex;
  }

  .rd-nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-4);
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .rd-nav__links--open {
    display: flex;
  }

  .rd-nav__link {
    padding: var(--space-2) var(--space-3);
  }
}