/* /styles/components/nav.css
   Navigation component only.
   Handles toggle, links and responsive behavior.
*/

/* ------------------------------ Nav Wrapper ------------------------------ */

.c-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  position: relative;
  min-width: 0;
}

/* ------------------------------ Toggle (mobile) ------------------------------ */

.c-nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-10);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition:
    background-color var(--dur-200) var(--ease-out),
    border-color var(--dur-200) var(--ease-out),
    box-shadow var(--dur-200) var(--ease-out);
}

.c-nav__toggle:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-2);
  box-shadow: var(--shadow-sm);
}

.c-nav__toggle:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* Hamburger lines */

.c-nav__toggle-lines {
  width: 18px;
  height: 12px;
  position: relative;
}

.c-nav__toggle-lines,
.c-nav__toggle-lines::before,
.c-nav__toggle-lines::after {
  display: block;
}

.c-nav__toggle-lines::before,
.c-nav__toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition:
    transform var(--dur-200) var(--ease-out),
    top var(--dur-200) var(--ease-out),
    opacity var(--dur-200) var(--ease-out);
}

.c-nav__toggle-lines::before {
  top: 2px;
}

.c-nav__toggle-lines::after {
  top: 8px;
}

/* Optional open state support */
.c-nav__toggle[aria-expanded="true"] .c-nav__toggle-lines::before {
  top: 5px;
  transform: rotate(45deg);
}

.c-nav__toggle[aria-expanded="true"] .c-nav__toggle-lines::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* ------------------------------ Nav Links ------------------------------ */

.c-nav__links {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

.c-nav__link {
  position: relative;
  color: var(--color-text-muted);
  font-weight: var(--font-weight-500);
  font-size: var(--font-size-14);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-10);
  transition:
    color var(--dur-200) var(--ease-out),
    background-color var(--dur-200) var(--ease-out);
}

.c-nav__link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.c-nav__link:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.c-nav__link.is-active {
  color: var(--color-accent-700);
  background: transparent;
}

.c-nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent-600);
  opacity: 0.9;
}

/* ------------------------------ Mobile Open State ------------------------------ */

.c-nav__links.is-open {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);

  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: min(320px, calc(100vw - 2 * var(--space-4)));

  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-18);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-nav);
}

.c-nav__links.is-open .c-nav__link {
  width: 100%;
  padding: var(--space-3) var(--space-4);
}

/* ------------------------------ Desktop ------------------------------ */

@media (min-width: 960px) {
  .c-nav__toggle {
    display: none;
  }

  .c-nav__links {
    display: inline-flex;
    position: static;
    padding: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    flex-direction: row;
    min-width: auto;
  }
}

/* ------------------------------ Header interplay ------------------------------ */

.c-header__cta {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

@media (max-width: 959px) {
  .c-header__inner {
    gap: var(--space-3);
  }

  .c-header__cta .c-button {
    padding-inline: var(--space-4);
  }
}

@media (max-width: 640px) {
  .c-brand__name {
    display: none;
  }

  .c-header__cta .c-button {
    min-width: auto;
  }
}