/* ============================================================
   nav.css
   PhoneDoc ATL — Navigation Styles
   ============================================================ */

/* ── Base Nav ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  height: var(--nav-height);
  transition: background-color var(--transition-normal),
              box-shadow var(--transition-normal),
              height var(--transition-normal);
}

/* ── Nav State Variants ──────────────────────────────────── */
.nav--transparent {
  background: transparent;
}

.nav--solid {
  background-color: var(--color-dark-bg);
  box-shadow: var(--shadow-nav);
}

.nav--scrolled {
  height: var(--nav-height-scrolled);
}

/* ── Inner Layout ────────────────────────────────────────── */
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
}

/* ── Logo ────────────────────────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  outline-offset: 4px;
}

.nav__logo-img {
  height: 62px;
  width: auto;
  object-fit: contain;
  transition: height var(--transition-normal),
              opacity var(--transition-fast);
}

.nav--scrolled .nav__logo-img {
  height: 46px;
}

.nav__logo:hover .nav__logo-img {
  opacity: 0.85;
}

/* ── Desktop Links List ──────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links li {
  display: flex;
  align-items: center;
}

/* ── Nav Link Base ───────────────────────────────────────── */
.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 4px 0 4px;
  white-space: nowrap;
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
  line-height: 1;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text-on-dark);
  outline: none;
}

/* Red underline slide-in from left */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-fast);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

/* Active state — underline always visible */
.nav-link--active {
  color: var(--color-text-on-dark);
}

.nav-link--active::after {
  transform: scaleX(1);
}

/* ── Nav Actions (right side) ────────────────────────────── */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* ── Nav Social Icons ────────────────────────────────────── */
.nav__social {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-right: 8px;
}

.nav__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.nav__social-link:hover {
  color: var(--color-text-on-dark);
  background-color: rgba(255, 255, 255, 0.08);
}

/* ── CTA Button ──────────────────────────────────────────── */
.nav__cta {
  font-size: 14px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  font-weight: 600;
}

/* ── Hamburger Button ────────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-btn);
  transition: background-color var(--transition-fast);
  flex-shrink: 0;
}

.nav__hamburger:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-on-dark);
  border-radius: 2px;
  transition: transform var(--transition-normal),
              opacity var(--transition-normal),
              width var(--transition-normal);
  transform-origin: center;
}

/* Hamburger → X animation */
.nav__hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.is-active span:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav__hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Drawer ───────────────────────────────────────── */
.nav__drawer {
  position: fixed;
  top: var(--nav-height);
  right: 0;
  width: 280px;
  height: calc(100vh - var(--nav-height));
  background-color: var(--color-dark-bg);
  padding: var(--space-3) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: 999;
  overflow-y: auto;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.nav--scrolled + .nav__drawer,
.nav--scrolled ~ .nav__drawer {
  top: var(--nav-height-scrolled);
  height: calc(100vh - var(--nav-height-scrolled));
}

.nav__drawer.is-open {
  transform: translateX(0);
}

/* Mobile drawer overlay */
.nav__drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 998;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.nav__drawer-overlay.is-visible {
  display: block;
}

/* Mobile drawer links */
.nav__drawer .drawer-link {
  display: block;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: var(--radius-btn);
  text-align: left;
  width: 100%;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
  letter-spacing: 0.01em;
}

.nav__drawer .drawer-link:hover,
.nav__drawer .drawer-link:focus-visible {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-text-on-dark);
  outline: none;
}

.nav__drawer .drawer-link--active {
  color: var(--color-primary);
  background-color: rgba(229, 57, 53, 0.08);
}

.nav__drawer .drawer-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin: 8px 0;
}

.nav__drawer .drawer-cta {
  margin-top: var(--space-2);
  text-align: center;
  border-radius: var(--radius-btn);
  padding: 12px;
  font-weight: 600;
}

/* ── Responsive Breakpoints ──────────────────────────────── */
@media (max-width: 1024px) {
  .nav__links {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  /* Hide desktop links and social */
  .nav__links {
    display: none;
  }

  .nav__social {
    display: none;
  }

  /* Show hamburger */
  .nav__hamburger {
    display: flex;
  }

  /* Adjust nav cta on mobile */
  .nav__cta {
    padding: 8px 16px;
    font-size: 13px;
  }
}

/* ── Drawer Social Icons ──────────────────────────────────── */
.drawer__social {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
}

.drawer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.drawer__social-link:hover {
  color: var(--color-text-on-dark);
  background-color: rgba(255, 255, 255, 0.08);
}

@media (max-width: 480px) {
  .nav__cta {
    display: none;
  }
}