body {
  margin: 0;
  font-family: "Gill Sans", "Trebuchet MS", sans-serif;
  color: #111;
  background: linear-gradient(120deg, #fff7d9 0%, #ffd5e4 35%, #d9f8ff 100%);
}

.page {
  width: min(1100px, 94%);
  margin: 2rem auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.2rem;
}

.left {
  background: #fff9f3;
  border: 3px solid #111;
  border-radius: 18px;
  padding: 1.2rem;
}

.left-column {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.back {
  color: #111;
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.14rem;
  font-size: 0.78rem;
}

h1 {
  margin: 0.4rem 0;
  line-height: 1.1;
  font-size: clamp(1.9rem, 5vw, 3.5rem);
}

.summary {
  margin: 0.5rem 0 0;
}

.details-box {
  background: #fff9f3;
  border: 3px solid #111;
  border-radius: 12px;
  padding: 0.8rem;
}

.details-box h2 {
  margin: 0 0 0.35rem;
  font-size: 1.5em;
}

.details-box h3 {
  margin: 0.7rem 0 0.3rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06rem;
}

.details-box ul {
  margin: 0;
  padding-left: 1.1rem;
}

.details-box li {
  margin: 0.25rem 0;
}

.details-box a {
  color: inherit;
}

.stamp {
  margin-top: 1rem;
  display: inline-block;
  border: 2px dashed #111;
  padding: 0.5rem 0.8rem;
  transform: rotate(-2deg);
}

.right {
  display: grid;
  gap: 1rem;
}

.collage {
  min-height: 360px;
  position: relative;
  background: #fff9f3;
  border-radius: 18px;
  border: 3px solid #111;
  overflow: hidden;
}

.collage img {
  position: absolute;
  border-radius: 10px;
  object-fit: cover;
  border: 2px solid #111;
}

.a {
  width: 40%;
  height: 78%;
  top: 6%;
  left: 4%;
  object-position: center top;
}

.b {
  width: 42%;
  height: 66%;
  right: 5%;
  top: 8%;
}

.c {
  width: 56%;
  height: 36%;
  left: 36%;
  bottom: 6%;
  top: auto;
  object-position: center center;
}

form {
  background: #fff9f3;
  border: 3px solid #111;
  border-radius: 18px;
  padding: 1rem;
  display: grid;
  gap: 0.65rem;
}

label {
  display: grid;
  gap: 0.3rem;
}

input,
select,
textarea,
button {
  font: inherit;
  border: 2px solid #111;
  border-radius: 8px;
  padding: 0.55rem;
}

button {
  background: #111;
  color: #fff;
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.rsvp-message {
  min-height: 1.2rem;
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.rsvp-message.success {
  color: #146c2e;
}

.rsvp-message.error {
  color: #a61b1b;
}

.rsvp-success {
  background: #fff9f3;
  border: 3px solid #111;
  border-radius: 18px;
  padding: 1.4rem 1rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: #146c2e;
  text-align: center;
}

@media (max-width: 900px) {
  .page {
    grid-template-columns: 1fr;
  }

  .collage {
    min-height: 332px;
  }

  .a {
    width: 54%;
    height: 66%;
    left: 2%;
    top: 5%;
    object-fit: contain;
    background: #fff;
    z-index: 2;
  }

  .b {
    width: 48%;
    height: 50.4%;
    right: 4%;
    top: 8%;
    z-index: 1;
  }

  .c {
    width: 62%;
    height: 31%;
    left: 34%;
    bottom: 4%;
    z-index: 3;
  }
}