/* ==========================================================================
   Navigation Component - Side Pull-out & Header
   ========================================================================== */

/* ==========================================================================
   Sticky Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height-mobile);
  background-color: transparent;
  z-index: var(--z-fixed);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .header {
    height: var(--header-height);
  }
}

.header__container {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 100%;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .header__container {
    padding: 0 var(--space-8);
  }
}

/* Menu Toggle Button */
.header__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
}

.header__menu-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 24px;
  height: 24px;
  position: relative;
}

.header__menu-icon span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-base);
  position: absolute;
}

.header__menu-icon span:nth-child(1) {
  transform: translateY(-7px);
}

.header__menu-icon span:nth-child(2) {
  transform: translateY(0);
}

.header__menu-icon span:nth-child(3) {
  transform: translateY(7px);
}

/* Active state - X icon */
.header__menu-btn.is-active .header__menu-icon span:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.header__menu-btn.is-active .header__menu-icon span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.is-active .header__menu-icon span:nth-child(3) {
  transform: translateY(0) rotate(-45deg);
}

/* Header on hero */
.header:not(.is-scrolled) .header__menu-icon span {
  background-color: var(--color-white);
}

.header:not(.is-scrolled) .header__logo-img {
  /* Invert logo to white on dark hero background */
  filter: invert(1) brightness(2);
  height: 48px;
}

@media (min-width: 768px) {
  .header:not(.is-scrolled) .header__logo-img {
    height: 60px;
  }
}

@media (min-width: 1024px) {
  .header:not(.is-scrolled) .header__logo-img {
    height: 68px;
  }
}

.header:not(.is-scrolled) .header__cta {
  background-color: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

/* Override the slide animation for hero button - use black fill instead */
.header:not(.is-scrolled) .header__cta::before {
  background-color: var(--color-black);
}

.header:not(.is-scrolled) .header__cta:hover {
  color: var(--color-white);
}

/* Header Logo */
.header__logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__logo-img {
  height: 44px;
  width: auto;
  transition: filter var(--transition-base), opacity var(--transition-base);
}

@media (min-width: 768px) {
  .header__logo-img {
    height: 56px;
  }
}

@media (min-width: 1024px) {
  .header__logo-img {
    height: 64px;
  }
}

/* Header CTA */
.header__cta {
  font-size: var(--font-size-xs);
  padding: var(--space-2) var(--space-4);
}

@media (min-width: 768px) {
  .header__cta {
    font-size: var(--font-size-sm);
    padding: var(--space-3) var(--space-6);
  }
}

/* ==========================================================================
   Side Navigation
   ========================================================================== */

.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--nav-width-mobile);
  height: 100vh;
  height: 100dvh;
  background-color: var(--color-white);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  z-index: var(--z-nav);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

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

@media (min-width: 768px) {
  .side-nav {
    width: var(--nav-width);
  }
}

.side-nav__header {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-4);
}

.side-nav__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-black);
  transition: color var(--transition-fast);
}

.side-nav__close:hover {
  color: var(--color-gray-500);
}

.side-nav__logo {
  padding: var(--space-4) var(--space-8);
  text-align: center;
}

.side-nav__logo-img {
  height: 50px;
  width: auto;
  margin: 0 auto;
}

.side-nav__links {
  padding: var(--space-8) var(--space-8);
  flex: 1;
}

.side-nav__link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-black);
  border-bottom: 1px solid var(--color-gray-100);
  transition: color var(--transition-fast), padding-left var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}

.side-nav__link:hover {
  color: var(--color-gray-500);
  padding-left: var(--space-2);
}

.side-nav__link.is-active {
  color: var(--color-black);
  font-weight: var(--font-weight-semibold);
  border-bottom-color: var(--color-black);
}

/* Staggered animation for nav links */
.side-nav.is-open .side-nav__links li {
  opacity: 0;
  transform: translateX(-20px);
  animation: slideInNav 0.3s ease forwards;
}

.side-nav.is-open .side-nav__links li:nth-child(1) { animation-delay: 0.1s; }
.side-nav.is-open .side-nav__links li:nth-child(2) { animation-delay: 0.15s; }
.side-nav.is-open .side-nav__links li:nth-child(3) { animation-delay: 0.2s; }
.side-nav.is-open .side-nav__links li:nth-child(4) { animation-delay: 0.25s; }
.side-nav.is-open .side-nav__links li:nth-child(5) { animation-delay: 0.3s; }
.side-nav.is-open .side-nav__links li:nth-child(6) { animation-delay: 0.35s; }
.side-nav.is-open .side-nav__links li:nth-child(7) { animation-delay: 0.4s; }

@keyframes slideInNav {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.side-nav__cta {
  padding: var(--space-4) var(--space-8);
}

.side-nav__footer {
  padding: var(--space-6) var(--space-8);
  border-top: 1px solid var(--color-gray-100);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.side-nav__social,
.side-nav__phone {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
}

.side-nav__social:hover,
.side-nav__phone:hover {
  color: var(--color-black);
}

/* ==========================================================================
   Navigation Overlay
   ========================================================================== */

.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: calc(var(--z-nav) - 1);
}

.nav-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}