/* ============================================
   NOMADCOMPASS - NAVIGATION STYLES
   Sticky top navigation with mobile hamburger
   ============================================ */

/* --------------------------------------------
   TEMPORARILY HIDE LOGIN/SIGNUP BUTTONS
   Remove this block to show them again
   -------------------------------------------- */
.nav-login,
.nav-signup,
.nav-mobile-actions > a[href="login.html"],
.nav-mobile-actions > a[href="signup.html"] {
  display: none !important;
}

/* --------------------------------------------
   SCROLLBAR LAYOUT SHIFT PREVENTION
   Always reserve space for scrollbar
   -------------------------------------------- */
html {
  overflow-y: scroll;
  scrollbar-gutter: stable;
}

/* --------------------------------------------
   AUTH STATE FLASH PREVENTION
   Hide login buttons only when user is logged in
   -------------------------------------------- */

/* If user is logged in (detected via localStorage sync check),
   hide the default login/signup links until auth.js replaces them with user menu */
html.auth-logged-in .nav-login,
html.auth-logged-in .nav-signup,
html.auth-logged-in .nav-mobile-actions > a[href="login.html"],
html.auth-logged-in .nav-mobile-actions > a[href="signup.html"] {
  visibility: hidden;
}

/* For logged-in users, show nav-actions only after auth.js has replaced the content */
html.auth-logged-in .nav-actions,
html.auth-logged-in .nav-mobile-actions {
  visibility: hidden;
}

html.auth-logged-in.auth-ready .nav-actions,
html.auth-logged-in.auth-ready .nav-mobile-actions {
  visibility: visible;
}

/* --------------------------------------------
   MAIN NAVIGATION BAR
   Fixed to top, full width
   -------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background-color: transparent;
  border-bottom: 1px solid transparent;
  /* Only transition visual properties, not layout */
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
  transition-property: background-color, border-color, box-shadow;
}

/* Add solid background when page is scrolled */
.nav.scrolled {
  background-color: var(--color-cream);
  border-bottom-color: var(--color-sand-dark);
  box-shadow: var(--shadow-md);
}

/* Container for nav content */
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* --------------------------------------------
   LOGO
   Elegant branding with icon and styled text
   -------------------------------------------- */
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  text-decoration: none !important;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: transform var(--transition-fast);
}

.nav-logo * {
  text-decoration: none !important;
}

.nav-logo:hover {
  transform: scale(1.02);
}

/* Logo icon */
.nav-logo-icon {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 2px 4px rgba(192, 57, 43, 0.2));
  transition: transform var(--transition-fast);
}

.nav-logo:hover .nav-logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

/* Logo text wrapper */
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

/* "Nomad" part - black and bold */
.nav-logo-nomad {
  font-weight: 700;
  color: var(--color-ink, #1a1a1a);
  letter-spacing: -0.5px;
  transition: color var(--transition-fast);
}

/* "Compass" part - red accent */
.nav-logo-accent {
  color: #c0392b;
  font-weight: 700;
  letter-spacing: -0.5px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-logo:hover .nav-logo-nomad {
  color: #333;
}

.nav-logo:hover .nav-logo-accent {
  color: #e74c3c;
}

/* --------------------------------------------
   DESKTOP NAVIGATION LINKS
   Centered links
   -------------------------------------------- */
.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Show on desktop */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

/* Individual nav link */
.nav-link {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-charcoal);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-terracotta);
}

/* Active state indicator */
.nav-link.active {
  color: var(--color-terracotta);
}

/* Underline on hover/active */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-terracotta);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* --------------------------------------------
   NAVIGATION ACTIONS
   Login and Sign Up buttons (right side)
   -------------------------------------------- */
.nav-actions {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

/* Show on desktop */
@media (min-width: 768px) {
  .nav-actions {
    display: flex;
  }
}

/* Login link - ghost style */
.nav-login {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-charcoal);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  transition: color var(--transition-fast);
}

.nav-login:hover {
  color: var(--color-terracotta);
}

/* Sign Up button - primary style, slightly smaller */
.nav-signup {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
}

/* --------------------------------------------
   USER MENU (logged in state)
   -------------------------------------------- */

/* User button - profile link */
.nav-user-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3) var(--space-1) var(--space-1);
  text-decoration: none;
  border-radius: var(--radius-full);
  background: var(--color-sand);
  transition: all var(--transition-fast);
}

.nav-user-btn:hover {
  background: var(--color-sand-dark);
}

/* Avatar container */
.nav-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-forest) 0%, var(--color-forest-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.nav-avatar-lg {
  width: 40px;
  height: 40px;
}

.nav-avatar-initials {
  color: white;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
}

.nav-avatar-lg .nav-avatar-initials {
  font-size: 14px;
}

.nav-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* User name */
.nav-user-name {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-charcoal);
}

/* Logout button - icon only on desktop */
.nav-logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-stone);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.nav-logout-btn svg {
  width: 18px;
  height: 18px;
}

/* Mobile user button */
.nav-user-btn-mobile {
  width: 100%;
  justify-content: flex-start;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2);
}

.nav-user-btn-mobile .nav-user-name {
  font-size: var(--text-base);
}

.nav-logout-btn-mobile {
  width: 100%;
}

/* --------------------------------------------
   MOBILE HAMBURGER MENU
   Three-line icon that animates to X
   -------------------------------------------- */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  cursor: pointer;
  z-index: 1001;
}

/* Hide on desktop */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

/* Hamburger lines */
.nav-toggle-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-charcoal);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.nav-toggle-line:nth-child(1) {
  transform: translateY(-6px);
}

.nav-toggle-line:nth-child(3) {
  transform: translateY(6px);
}

/* Animate to X when open */
.nav-toggle.active .nav-toggle-line:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.nav-toggle.active .nav-toggle-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.active .nav-toggle-line:nth-child(3) {
  transform: translateY(0) rotate(-45deg);
}

/* --------------------------------------------
   MOBILE MENU OVERLAY
   Full-screen menu for mobile
   -------------------------------------------- */
.nav-mobile {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-cream);
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  z-index: 999;
}

/* Show mobile menu when active */
.nav-mobile.active {
  transform: translateX(0);
}

/* Hide on desktop */
@media (min-width: 768px) {
  .nav-mobile {
    display: none;
  }
}

/* Mobile menu links */
.nav-mobile-links {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-8) 0;
}

.nav-mobile-link {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-ink);
  text-decoration: none;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-sand-dark);
  transition: color var(--transition-fast);
}

.nav-mobile-link:hover,
.nav-mobile-link.active {
  color: var(--color-terracotta);
}

/* Mobile menu actions */
.nav-mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.nav-mobile-actions .btn {
  width: 100%;
  justify-content: center;
}

/* Prevent body scroll when mobile menu is open */
body.nav-open {
  overflow: hidden;
}