/* ===== Site Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  height: 80px;
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s ease, height 0.3s ease;
}

.site-header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  height: 70px;
}

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

.site-header__logo {
  display: flex;
  align-items: center;
}

.site-header__logo img {
  height: 40px;
  width: auto;
}

.site-header__nav {
  display: none;
}

@media (min-width: 1024px) {
  .site-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }
}

.site-header__nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-dark-gray);
  letter-spacing: 0.05em;
  position: relative;
  padding: 0.25rem 0;
  transition: color 0.2s ease;
}

.site-header__nav a:hover,
.site-header__nav a.is-active {
  color: var(--color-primary);
}

.site-header__nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.site-header__nav a:hover::after,
.site-header__nav a.is-active::after {
  width: 100%;
}

.site-header__nav a.nav-external {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Mobile Nav Toggle (Hamburger) ===== */
.mobile-nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1010;
}

@media (min-width: 1024px) {
  .mobile-nav-toggle {
    display: none;
  }
}

.mobile-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-near-black);
  transition: all 0.3s ease;
  margin: 3px 0;
}

.mobile-nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ===== Mobile Navigation Overlay ===== */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 1005;
  background: rgba(255, 255, 255, 0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav--open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-near-black);
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
}

.mobile-nav--open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav--open a:nth-child(1) { transition-delay: 0.05s; }
.mobile-nav--open a:nth-child(2) { transition-delay: 0.1s; }
.mobile-nav--open a:nth-child(3) { transition-delay: 0.15s; }
.mobile-nav--open a:nth-child(4) { transition-delay: 0.2s; }
.mobile-nav--open a:nth-child(5) { transition-delay: 0.25s; }

.mobile-nav a:hover {
  color: var(--color-primary);
}

/* ===== Site Footer ===== */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-2xl);
  }
}

.site-footer__brand img {
  height: 36px;
  width: auto;
  margin-bottom: var(--space-md);
  filter: brightness(0) invert(1);
}

.site-footer__brand p {
  font-size: var(--text-small);
  line-height: var(--leading-normal);
}

.site-footer__heading {
  font-size: var(--text-small);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer__links a {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.site-footer__links a:hover {
  color: var(--color-white);
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Hero Section (TOP - Full Height) ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  color: var(--color-white);
  max-width: 700px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.hero__main-copy {
  font-size: var(--text-hero-main);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  letter-spacing: 0.08em;
  color: var(--color-white);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero__sub-copy {
  font-size: var(--text-hero-sub);
  font-weight: 500;
  line-height: var(--leading-normal);
  margin-bottom: var(--space-md);
}

.hero__small-copy {
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-normal);
  opacity: 0.85;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-white);
  opacity: 0.6;
  animation: scrollBounce 2s infinite;
}

.hero__scroll-indicator span {
  font-size: var(--text-small);
  font-family: var(--font-english);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Page Hero (Sub-pages - Half Height) ===== */
.page-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: var(--space-3xl) 0 var(--space-2xl);
  padding-top: calc(80px + var(--space-3xl));
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.6) 0%,
    rgba(0, 0, 0, 0.2) 100%
  );
  z-index: 1;
}

.page-hero > * {
  position: relative;
  z-index: 2;
}

.page-hero__title {
  color: var(--color-white);
}

/* ===== Grid Systems ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ===== Section Padding ===== */
.section-padding {
  padding: var(--space-2xl) 0;
}

@media (min-width: 768px) {
  .section-padding {
    padding: var(--space-3xl) 0;
  }
}

.section-padding-lg {
  padding: var(--space-3xl) 0;
}

@media (min-width: 768px) {
  .section-padding-lg {
    padding: var(--space-4xl) 0;
  }
}

/* ===== Body offset for fixed header ===== */
.page-body {
  padding-top: 80px;
}

/* ===== Body scroll lock ===== */
.no-scroll {
  overflow: hidden;
}