:root {
  --mint: #b3eac2;
  --mint-deep: #9fdbb5;
  --paper: #ebe9ec;
  --ink: #61397d;
  --pink: #e9c1dc;
  --pink-deep: #d3a9ca;
  --yellow: #f5e991;
  --shadow: rgba(97, 57, 125, 0.18);
  --line: 4px;
  --radius: 2rem;
  --font: "Courier New", Courier, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  height: 100%;
  overflow: hidden;
  background: var(--mint);
  color: var(--ink);
  font-family: var(--font);
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(60px, 90px) 1fr;
  min-height: 100vh;
}

.side-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
}

.side-label span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.08em;
  font-size: clamp(1.2rem, 2vw, 2rem);
}

.window-stage {
  position: relative;
  padding: 2rem;
  min-height: 100vh;
  height: 100vh;
  background: transparent;
  border: var(--line) solid transparent;
  box-shadow: none;
  overflow: hidden;
}

.browser-window {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50%;
  height: 67%;
  transform: translate(-50%, -50%);
  background: var(--paper);
  border: var(--line) solid var(--ink);
  border-radius: 2rem;
  overflow: hidden;
}

.window-bar.is-draggable {
  cursor: move;
}

.window-bar.is-dragging {
  cursor: grabbing;
}

.window-bar {
  height: 2.8rem;
  display: flex;
  gap: 0.55rem;
  align-items: center;
  padding: 0 1rem;
  border-bottom: var(--line) solid var(--ink);
  background: rgba(255,255,255,0.18);
}

.window-bar span {
  width: 1rem;
  height: 1rem;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
}

.window-bar span:nth-child(2) { background: var(--pink); }
.window-bar span:nth-child(3) { background: var(--mint); }

.window-body {
  height: calc(100% - 2.8rem);
  overflow: auto;
  padding: clamp(1.2rem, 3vw, 2.6rem);
}

.hero-copy {
  max-width: 38rem;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-size: clamp(1.5rem, 2.7vw, 2.8rem);
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 5.6rem);
  line-height: 0.9;
  text-transform: uppercase;
}

.lede,
.event-meta p,
label,
legend,
input,
button {
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
}

.lede {
  max-width: 34rem;
  margin: 1.25rem auto 0;
  line-height: 1.45;
}

.event-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.event-meta h2 {
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
  text-transform: uppercase;
}

.event-meta > div {
  border: var(--line) solid var(--ink);
  border-radius: 1.25rem;
  padding: 1rem;
  background: rgba(255,255,255,0.22);
}

.rsvp-form {
  max-width: 42rem;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.field,
.field-attendance {
  display: grid;
  gap: 0.45rem;
}

label,
legend {
  font-weight: 700;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  border: var(--line) solid var(--ink);
  border-radius: 999px;
  padding: 0.95rem 1rem;
  background: #fffdfd;
  color: var(--ink);
  font-family: inherit;
}

.field-attendance {
  border: var(--line) solid var(--ink);
  border-radius: 1.3rem;
  padding: 1rem;
  background: rgba(233, 193, 220, 0.22);
}

.choice {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  font-weight: 400;
}

.choice input {
  accent-color: var(--ink);
  width: 1rem;
  height: 1rem;
}

.cta {
  appearance: none;
  border: var(--line) solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font-family: inherit;
  font-weight: 700;
  padding: 1rem 1.2rem;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
  box-shadow: 0 8px 0 rgba(97, 57, 125, 0.15);
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-2px);
}

.form-status {
  min-height: 1.5em;
  margin: 0;
  text-align: center;
  font-weight: 700;
}

.decor {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
}

.decor-balloons {
  right: 1.2rem;
  bottom: -18rem;
  width: clamp(8rem, 14vw, 12rem);
  animation: balloons-fly 10s linear infinite;
}

@keyframes balloons-fly {
  0% {
    transform: translateY(0) translateX(0) rotate(-4deg);
    opacity: 0;
  }
  8% {
    opacity: 1;
  }
  45% {
    transform: translateY(-48vh) translateX(-0.5rem) rotate(2deg);
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateY(-115vh) translateX(0.7rem) rotate(-3deg);
    opacity: 0;
  }
}

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

  .side-label {
    display: none;
  }

  .window-stage {
    padding: 1rem;
  }

}

@media (min-width: 641px) and (max-width: 900px) {
  .browser-window {
    width: 80%;
  }
}

@media (max-width: 640px) {
  .window-stage {
    display: grid;
    place-items: center;
  }

  .browser-window {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    width: min(100%, 34rem);
    height: min(86vh, 46rem);
    margin: 0;
  }

  .browser-window.is-draggable,
  .browser-window.is-dragging {
    cursor: default;
  }

  .event-meta {
    grid-template-columns: 1fr;
  }

  .decor-balloons {
    right: 0.7rem;
    width: clamp(7rem, 22vw, 10rem);
  }
}