/**
 * Edufin - Navigation Bar Component Styles
 * Two states: default (transparent) and scrolled (glass morphism)
 * 
 * Figma Design References:
 * - Desktop Default: 1012:11726
 * - Desktop Scrolled: 1023:1564 (Floating pill with glass effect)
 * - Mobile Default: 1028:8573
 * - Mobile Scrolled: 1028:8674
 */

/* =================================
   BASE NAVBAR STYLES
   ================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-5) var(--space-30);
  transition:
    padding var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-5);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

/* Hide hamburger on desktop */
.navbar-toggle {
  display: none;
}

/* =================================
   LOGO STYLES
   ================================= */

.navbar-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar-logo img {
  width: 7.875rem;
  height: 2.375rem;
}

/* =================================
   NAVIGATION MENU (Desktop)
   ================================= */

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Nav links - matching Figma exactly */
.nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  line-height: 1.25rem;
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  text-decoration: none;
}

/* Active nav link - same padding, just different colors */
.nav-link.is-active {
  /* Padding inherited from base .nav-link */
}

/* =================================
   CTA BUTTON STYLES
   ================================= */

.navbar-cta {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar-cta .btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1.875rem;
  border-radius: var(--radius-xl);
  background-color: var(--color-primary-orange);
  color: var(--color-base-white);
  text-decoration: none;
  transition: background-color var(--transition-fast);
  white-space: nowrap;
}

.navbar-cta .btn-cta:hover {
  background-color: #d64008;
}

/* =================================
   MOBILE TOGGLE BUTTON (Hidden on desktop)
   ================================= */

.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  width: auto;
  height: auto;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--space-2);
  cursor: pointer;
  box-shadow: none;
  flex-shrink: 0;
  gap: 0.25rem;
}

.navbar-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: #303030;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.navbar-toggle span:last-child {
  width: 0.875rem;
}

/* =================================
   MOBILE DROPDOWN MENU
   ================================= */

.navbar-mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: var(--space-5);
  right: var(--space-5);
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-base-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-base-white-stroke);
  animation: slideDown var(--transition-base);
}

.navbar-mobile-menu.is-open {
  display: flex;
}

.navbar-mobile-menu .nav-link {
  width: 100%;
  justify-content: flex-start;
  padding: var(--space-3) var(--space-4);
  color: var(--color-base-gray-text) !important;
  background-color: transparent !important;
}

.navbar-mobile-menu .nav-link:hover {
  color: var(--color-base-black) !important;
  background-color: var(--color-primary-green-lightest) !important;
}

.navbar-mobile-menu .nav-link.is-active {
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-primary-green-lightest) !important;
  color: var(--color-base-black) !important;
}

/* =================================
   DEFAULT STATE (Transparent on hero)
   ================================= */

.navbar:not(.is-scrolled) .navbar-container {
  background: transparent;
  border: 1px solid transparent;
}

/* Logo: Show white version on transparent background */
.navbar:not(.is-scrolled) .navbar-logo-color {
  display: none;
}

.navbar:not(.is-scrolled) .navbar-logo-white {
  display: block;
}

/* Nav links: White text on transparent background */
.navbar:not(.is-scrolled) .nav-link {
  color: var(--color-base-white);
}

.navbar:not(.is-scrolled) .nav-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Active state: green lightest bg with black text */
.navbar:not(.is-scrolled) .nav-link.is-active {
  background-color: var(--color-base-white);
  color: var(--color-base-black);
}

/* =================================
   SCROLLED STATE (Desktop - Floating Pill)
   ================================= */

.navbar.is-scrolled {
  top: var(--space-5);
  padding: var(--space-2) var(--space-30);
}

.navbar.is-scrolled .navbar-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-base-white-stroke);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-4);
}

/* Logo: Show color version on scrolled state */
.navbar.is-scrolled .navbar-logo-color {
  display: block;
}

.navbar.is-scrolled .navbar-logo-white {
  display: none;
}

/* Nav links: Gray text on scrolled state */
.navbar.is-scrolled .nav-link {
  color: var(--color-base-gray-text);
}

.navbar.is-scrolled .nav-link:hover {
  color: var(--color-base-black);
  background-color: var(--color-primary-green-lightest);
}

.navbar.is-scrolled .nav-link.is-active {
  color: var(--color-base-black);
  background-color: var(--color-primary-green-lightest);
}

/* =================================
   RESPONSIVE - TABLET & MOBILE (< 1024px)
   ================================= */

@media (max-width: 1024px) {
  .navbar {
    padding: var(--space-2) 0;
    background: transparent;
  }

  .navbar-container {
    width: 100%;
    max-width: none;
    margin: 0;
    border-radius: 0;
    padding: var(--space-2) var(--space-5);
    background: transparent !important;
    backdrop-filter: none !important;
    border: none !important;
  }

  /* Show hamburger on mobile */
  .navbar-toggle {
    display: flex;
    order: 1;
  }

  /* Logo in center */
  .navbar-logo {
    order: 2;
    margin-left: var(--space-6);
  }

  .navbar-logo img {
    width: 7.125rem;
    height: 2.125rem;
  }

  /* CTA on right */
  .navbar-cta {
    order: 3;
    margin-left: auto;
  }

  /* Mobile CTA button - smaller size */
  .navbar-cta .btn-cta {
    padding: 0.625rem var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: var(--text-base);
    letter-spacing: 0.5px;
    border-radius: var(--space-2);
    min-width: 3.75rem;
  }

  /* Hide desktop menu */
  .navbar-menu {
    display: none;
  }

  /* Mobile Default: white logo on dark hero */
  .navbar:not(.is-scrolled) .navbar-logo-color {
    display: none;
  }

  .navbar:not(.is-scrolled) .navbar-logo-white {
    display: block;
  }

  /* Mobile Default: hamburger button transparent */
  .navbar:not(.is-scrolled) .navbar-toggle {
    background: transparent;
    border: none;
  }

  .navbar:not(.is-scrolled) .navbar-toggle span {
    background-color: var(--color-base-white);
  }

  /* =================================
     MOBILE SCROLLED STATE
     ================================= */

  .navbar.is-scrolled {
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0px 2px 4px 0px rgba(27, 28, 29, 0.04);
    padding: var(--space-2) 0;
  }

  .navbar.is-scrolled .navbar-container {
    background: transparent !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
    padding: var(--space-2) var(--space-5);
  }

  /* Mobile Scrolled: show color logo */
  .navbar.is-scrolled .navbar-logo-color {
    display: block;
  }

  .navbar.is-scrolled .navbar-logo-white {
    display: none;
  }
}

/* =================================
   SMALL MOBILE (< 480px)
   ================================= */

@media (max-width: 480px) {
  .navbar-cta .btn-cta {
    padding: var(--space-2) 0.625rem;
    font-size: 0.8125rem;
  }

  .navbar-logo img {
    width: 6.25rem;
    height: 1.875rem;
  }
}

/* =================================
   ANIMATIONS
   ================================= */

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}