/* Critical CSS - Above-the-fold for fastest LCP */
:root {
  --color-primary: #1B6B93;
  --color-bg: #FAFAF7;
  --color-text: #2D2D2D;
  --color-dark: #2D2D2D;
  --color-white: #ffffff;
  --font-primary: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --text-base: 1rem;
  --text-sm: 0.875rem;
  --text-xl: 1.25rem;
  --font-bold: 700;
  --font-semibold: 600;
  --leading-normal: 1.5;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-8: 2rem;
  --header-height: 80px;
  --header-height-scrolled: 70px;
  --z-fixed: 300;
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --tracking-wider: 0.05em;
  --radius-md: 8px;
  --gradient-blue: linear-gradient(135deg, #1B6B93 0%, #145574 100%);
  --container-xl: 1200px;
}
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; }
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: var(--z-fixed); height: var(--header-height);
  transition: all var(--transition-base);
}
.header::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  opacity: 0; transition: opacity var(--transition-base);
}
.header.scrolled::before { opacity: 1; }
.header.scrolled { height: var(--header-height-scrolled); box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.header__inner {
  position: relative; display: flex; align-items: center;
  justify-content: space-between; height: 100%;
  max-width: 1400px; margin: 0 auto; padding: 0 var(--space-5);
}
.header__logo { position: relative; z-index: 1; display: flex; align-items: center; gap: var(--space-3); }
.header__logo-text {
  font-family: var(--font-heading); font-size: var(--text-xl);
  font-weight: var(--font-bold); color: var(--color-dark);
  white-space: nowrap; text-transform: uppercase; letter-spacing: 2px;
}
.header__logo-text span { color: var(--color-primary); }
.nav { display: none; position: relative; z-index: 1; }
@media (min-width: 1024px) { .nav { display: flex; align-items: center; gap: var(--space-8); } }
.nav__list { display: flex; align-items: center; gap: var(--space-8); }
.nav__link {
  position: relative; font-size: var(--text-sm); font-weight: var(--font-semibold);
  color: var(--color-text); text-transform: uppercase; letter-spacing: var(--tracking-wider);
  padding: var(--space-3) 0;
}
.header__actions { position: relative; z-index: 1; display: flex; align-items: center; gap: var(--space-4); }
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 9999px;
  background: var(--color-gray-100, #F0F0EB); cursor: pointer; position: relative;
}
.theme-toggle svg {
  width: 20px; height: 20px; color: var(--color-dark); position: absolute;
}
.theme-toggle__sun { opacity: 1; }
.theme-toggle__moon { opacity: 0; }
html.dark-mode .theme-toggle__sun { opacity: 0; }
html.dark-mode .theme-toggle__moon { opacity: 1; }
.container {
  width: 100%; max-width: var(--container-xl);
  margin-left: auto; margin-right: auto;
  padding-left: var(--space-5); padding-right: var(--space-5);
}
.hero {
  position: relative; min-height: 100vh; min-height: 100dvh;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem; padding: 12px 24px; font-size: var(--text-sm);
  font-weight: var(--font-semibold); text-transform: uppercase;
  letter-spacing: var(--tracking-wider); border-radius: var(--radius-md);
  transition: all var(--transition-base); white-space: nowrap;
}
.btn--primary { background: var(--gradient-blue); color: var(--color-white); border: none; }
@media (max-width: 480px) {
  .header__logo-text { font-size: var(--text-sm); }
  .header__actions .btn { display: none; }
}
/* Header transparent — white elements over hero */
.header .nav__link { color: #ffffff; }
.header .lang-btn { color: rgba(255,255,255,0.6); }
.header .lang-btn.active { color: #fff; background: rgba(255,255,255,0.2); }
.header .theme-toggle { background: rgba(255,255,255,0.15); }
.header .theme-toggle svg { color: #fff; }
.header.scrolled .nav__link { color: var(--color-text); }
.header.scrolled .header__logo-img { filter: invert(1); }
.header.scrolled .theme-toggle { background: var(--color-gray-100, #F0F0EB); }
.header.scrolled .theme-toggle svg { color: var(--color-dark); }
html.dark-mode .header.scrolled .header__logo-img { filter: none; }
/* Dark Mode Critical Overrides */
html.dark-mode body { background-color: #0C1B24; color: #E8E6E1; }
html.dark-mode .header::before { background: rgba(12, 27, 36, 0.95); }
html.dark-mode .hero__overlay {
  background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.25) 40%, rgba(0,0,0,0.55) 100%);
}
html.dark-mode .header__logo-text { color: #E8E6E1; }
html.dark-mode .btn--primary { background: linear-gradient(135deg, #D4A574 0%, #B8885A 100%); color: #0C1B24; }