/* ─── Fonts ─────────────────────────────────────────────── */
@font-face {
  font-family: 'Fraunces';
  src: url('../assets/fonts/fraunces-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Fraunces';
  src: url('../assets/fonts/fraunces-400i.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Fraunces';
  src: url('../assets/fonts/fraunces-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('../assets/fonts/dm-sans-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('../assets/fonts/dm-sans-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('../assets/fonts/dm-sans-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ─── Base ───────────────────────────────────────────────── */
html {
  font-size: var(--font-size-base);
}
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: var(--heading-letter-spacing);
  line-height: var(--heading-line-height);
}

/* ─── Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
}
.site-header__inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header__logo {
  display: flex;
  align-items: center;
}
.site-header__logo img {
  height: 72px;
  width: auto;
}
.site-header__right {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.site-nav {
  display: none;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.site-nav__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-base);
  padding: var(--space-1) 0;
  border-bottom: 2px solid transparent;
}
.site-nav__link:hover {
  color: var(--color-accent);
}
.site-nav__link.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Language dropdown */
.lang-dropdown {
  position: relative;
}
.lang-dropdown__btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: border-color var(--transition-base);
}
.lang-dropdown__btn:hover {
  border-color: var(--color-accent);
}
.lang-dropdown__btn .chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
}
.lang-dropdown.is-open .chevron {
  transform: rotate(180deg);
}
.lang-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  min-width: 100%;
  z-index: 10;
}
.lang-dropdown.is-open .lang-dropdown__menu {
  display: block;
}
.lang-dropdown__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-base);
  white-space: nowrap;
}
.lang-dropdown__option:hover {
  background: var(--color-surface);
}
.lang-dropdown__option.is-active {
  color: var(--color-accent);
}

/* Mobile nav controls */
.mobile-nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  padding: var(--space-1);
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  z-index: 99;
}
.mobile-nav.is-open {
  display: block;
}
.mobile-nav__list {
  padding: var(--space-4) 0;
}
.mobile-nav__link {
  display: block;
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  border-left: 3px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}
.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--color-secondary);
  color: var(--color-text-light);
  padding: var(--space-8) var(--space-6);
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  text-align: center;
}
.site-footer__divider {
  display: none;
}
@media (min-width: 768px) {
  .site-footer__inner {
    flex-direction: row;
    gap: var(--space-4);
  }
  .site-footer__divider {
    display: inline;
    opacity: 0.4;
  }
}
.site-footer a {
  color: var(--color-text-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition-base);
}
.site-footer a:hover {
  opacity: 0.75;
}

/* ─── Section titles ─────────────────────────────────────── */
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: var(--heading-letter-spacing);
  line-height: var(--heading-line-height);
  text-align: center;
  margin-bottom: var(--space-12);
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  padding: var(--space-4) var(--space-8);
  transition: background var(--transition-base), color var(--transition-base), opacity var(--transition-base);
  cursor: pointer;
  border: none;
}
.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-light);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
}
.btn--primary:active {
  background: var(--color-accent-hover);
  opacity: 0.9;
}
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text);
}
.btn--ghost:hover {
  background: var(--color-text);
  color: var(--color-text-light);
}

/* ─── Scroll animations ──────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Utilities ──────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── Breakpoints ────────────────────────────────────────── */
@media (min-width: 768px) {
  .site-nav { display: flex; }
  .mobile-nav-controls .hamburger { display: none; }
  .site-header { padding: 0 var(--space-12); }
}
@media (min-width: 1440px) {
  .site-header { padding: 0 var(--space-16); }
}