/* ============================================
   NAVIGATION MODULE
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.nav__container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  transition: color var(--transition-fast);
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__logo:hover {
  color: var(--color-accent);
}

/* Desktop Menu */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

/* Actions */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-bounce);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: rotate(20deg) scale(1.05);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

/* Mobile Drawer */
.nav__drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 90vw);
  height: 100dvh;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  padding: 6rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

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

.nav__drawer .nav__link {
  font-size: 1.125rem;
  padding: 0.75rem 1rem;
  display: block;
  border-radius: var(--radius-md);
}

.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(4px);
}

.nav__overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Resume CTA in Nav */
.nav__cta {
  background: var(--color-accent);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem !important;
  box-shadow: var(--shadow-accent);
  transition: all var(--transition-bounce) !important;
}

.nav__cta:hover {
  background: var(--color-accent-dark) !important;
  color: white !important;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79,142,247,0.4) !important;
}

@media (max-width: 768px) {
  .nav__menu { display: none; }
  .nav__hamburger { display: flex; }
  .nav__cta { display: none; }
}