@font-face {
  font-family: "Belvare";
  src: url("assets/belvare.otf") format("opentype");
  font-display: swap;
}

:root {
  --paper: #eee7da;
  --paper-light: #f5f0e7;
  --brown: #4c372f;
  --brown-soft: #766359;
  --blue: #92aabd;
  --blue-light: #dfe8ea;
  --olive: #73725c;
  --line: rgba(76, 55, 47, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--brown);
  background: var(--paper);
  font-family: Georgia, serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.rsvp-nav {
  min-height: 88px;
  padding: 0 clamp(24px, 5vw, 82px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--paper-light);
  border-bottom: 1px solid var(--line);
}

.rsvp-brand {
  font-family: "Belvare", Georgia, serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1;
  text-transform: uppercase;
}

.rsvp-back {
  font-family: Arial, sans-serif;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.rsvp-hero {
  min-height: 500px;
  padding: clamp(68px, 8vw, 118px) clamp(28px, 8vw, 130px);
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(240px, 0.65fr);
  align-items: center;
  gap: clamp(54px, 8vw, 130px);
  position: relative;
  overflow: hidden;
  background: var(--blue);
}

.rsvp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("assets/background-texture.jpg") center / cover;
  filter: grayscale(1) brightness(1.35) contrast(0.72);
  mix-blend-mode: soft-light;
  opacity: 0.08;
}

.rsvp-hero-copy,
.rsvp-hero-details {
  position: relative;
  z-index: 1;
}

.rsvp-hero-copy p,
.rsvp-hero-details small {
  font-family: Arial, sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.rsvp-hero-copy h1 {
  margin: 25px 0 0;
  display: grid;
  gap: 0.12em;
  font-family: "Belvare", Georgia, serif;
  font-size: clamp(5.4rem, 9.2vw, 9.4rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.78;
  text-transform: uppercase;
}

.rsvp-hero-copy h1 span {
  display: block;
}

.rsvp-hero-details {
  padding-left: clamp(28px, 4vw, 56px);
  display: grid;
  gap: 0;
  border-left: 1px solid rgba(76, 55, 47, 0.35);
}

.rsvp-hero-details p {
  margin: 0;
  padding: 22px 0;
  display: grid;
  gap: 8px;
  border-bottom: 1px solid rgba(76, 55, 47, 0.22);
}

.rsvp-hero-details p:first-child {
  border-top: 1px solid rgba(76, 55, 47, 0.22);
}

.rsvp-hero-details small {
  color: var(--brown-soft);
  font-size: 0.48rem;
}

.rsvp-hero-details strong {
  font-family: Georgia, serif;
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 400;
  line-height: 1.25;
}

.rsvp-form-section {
  padding: 70px clamp(12px, 4vw, 62px) 80px;
  background: var(--paper-light);
}

.rsvp-form-intro {
  width: min(760px, 100%);
  margin: 0 auto 30px;
  padding: 24px 30px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--paper-light);
  background: var(--olive);
  border-radius: 12px;
}

.rsvp-form-intro p,
.rsvp-form-intro strong {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.5;
}

.rsvp-form-frame {
  width: min(780px, 100%);
  margin: 0 auto;
  padding: 10px;
  overflow: hidden;
  overscroll-behavior: contain;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 6px solid var(--blue);
}

.rsvp-form-frame iframe {
  width: 100%;
  height: min(82svh, 920px);
  min-height: 720px;
  display: block;
  border: 0;
  background: #fff;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.rsvp-form-fallback {
  width: min(780px, 100%);
  margin: 16px auto 0;
  padding: 14px 18px;
  display: block;
  color: var(--paper-light);
  background: var(--olive);
  border: 1px solid var(--olive);
  font-family: Arial, sans-serif;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.45;
  text-align: center;
  text-transform: uppercase;
}

.rsvp-adults-note {
  width: min(780px, 100%);
  margin: 24px auto 0;
  padding: 20px 26px;
  color: var(--brown-soft);
  background: var(--blue-light);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: center;
}

.rsvp-footer {
  min-height: 110px;
  padding: 26px clamp(24px, 7vw, 110px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  color: var(--paper-light);
  background: var(--olive);
  text-align: center;
}

.rsvp-footer strong {
  font-family: "Belvare", Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  text-transform: uppercase;
}

.rsvp-footer span {
  font-family: Arial, sans-serif;
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .rsvp-nav {
    min-height: 72px;
  }

  .rsvp-brand {
    font-size: 1.65rem;
  }

  .rsvp-back {
    font-size: 0.46rem;
  }

  .rsvp-hero {
    min-height: 560px;
    padding: 68px 24px 56px;
    grid-template-columns: 1fr;
    align-content: center;
    gap: 48px;
  }

  .rsvp-hero-copy h1 {
    gap: 0.1em;
    font-size: clamp(4.7rem, 21vw, 6.4rem);
    line-height: 0.8;
  }

  .rsvp-hero-details {
    padding-left: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-left: 0;
    border-top: 1px solid rgba(76, 55, 47, 0.28);
  }

  .rsvp-hero-details p {
    padding: 18px 0;
    border-top: 0;
  }

  .rsvp-hero-details p:first-child {
    border-top: 0;
  }

  .rsvp-hero-details p:nth-child(2) {
    padding-left: 20px;
    border-left: 1px solid rgba(76, 55, 47, 0.22);
  }

  .rsvp-hero-details p:last-child {
    grid-column: 1 / -1;
  }

  .rsvp-form-section {
    padding: 48px 8px 58px;
  }

  .rsvp-form-intro {
    width: calc(100% - 16px);
    padding: 20px;
    display: grid;
    text-align: center;
  }

  .rsvp-form-frame {
    padding: 4px;
  }

  .rsvp-form-frame iframe {
    height: 78svh;
    min-height: 620px;
  }

  .rsvp-form-fallback {
    width: calc(100% - 16px);
    padding: 14px 12px;
    font-size: 0.5rem;
    letter-spacing: 0.07em;
  }

  .rsvp-adults-note {
    width: calc(100% - 16px);
  }

  .rsvp-footer {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}