/* ===== GLOBAL STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  background: #f7f5f0;
  color: #111827;
}

.serif {
  font-family: "Playfair Display", serif;
}

/* ===== HEADER ===== */
header {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-container {
  max-width: 1536px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}

.logo {
  font-family: "Playfair Display", serif;
  font-size: 1.25rem;
}

/* ===== NAVIGATION ===== */
nav.desktop-nav {
  display: none;
  gap: 2rem;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

nav.desktop-nav a {
  text-decoration: none;
  color: #111827;
  transition: opacity 0.3s ease;
}

nav.desktop-nav a:hover {
  opacity: 0.7;
}

@media (min-width: 768px) {
  nav.desktop-nav {
    display: flex;
  }
}

.menu-btn {
  display: block;
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
}

@media (min-width: 768px) {
  .menu-btn {
    display: none;
  }
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: #f7f5f0;
}

.mobile-nav.open {
  max-height: 400px;
}

.mobile-nav a {
  display: block;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  text-decoration: none;
  color: #111827;
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none !important;
  }
}

/* ===== CTA BUTTON ===== */
.btn-rsvp {
  background: black;
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.btn-rsvp:hover {
  opacity: 0.8;
}

.btn-rsvp.hidden-mobile {
  display: none;
}

@media (min-width: 768px) {
  .btn-rsvp.hidden-mobile {
    display: inline-block;
  }
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 2.5rem 0;
  font-size: 0.875rem;
  opacity: 0.6;
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-sm {
  max-width: 448px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== MAIN CONTENT ===== */
main {
  padding-top: 5rem;
}