/*
  The card is a fixed-shape artboard: 100 x 186 units in portrait, 150 x 100 in landscape.
  One unit (--u) is worked out from the screen so the whole artboard always fits with
  padding (--p) around it. Every size inside the card is a multiple of --u, so the card
  looks the same on every device, only bigger or smaller, and never needs to scroll.
*/

:root {
  --page: #141a18;
  --page-glow: #27312e;
  --card: #ece7ed;
  --mat: #f6f3f6;
  --ink: #1d2422;
  --ink-soft: #3a4441;
  --light: #f4eff5;
  --script: "Pinyon Script";

  --p: clamp(10px, 3vmin, 36px);
  --w: 100;
  --h: 186;
  --u: min(
    calc((100vw - 2 * var(--p)) / var(--w)),
    calc((100vh - 2 * var(--p) - 1px) / var(--h))
  );
}

@media (min-aspect-ratio: 1/1) {
  :root {
    --w: 150;
    --h: 100;
  }
}

/* svh = the screen with the browser's address bar showing, so nothing hides behind it */
@supports (height: 100svh) {
  :root {
    --u: min(
      calc((100vw - 2 * var(--p)) / var(--w)),
      calc((100svh - 2 * var(--p) - 1px) / var(--h))
    );
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  background: var(--page);
}

body {
  margin: 0;
  background: radial-gradient(120% 90% at 50% 40%, var(--page-glow), var(--page) 75%);
  color: var(--ink);
  font-family: "Marcellus", Georgia, "Times New Roman", serif;
  overflow-x: hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- stage: centres the card on the screen ---------- */

.stage {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: var(--p);
}

/* ---------- the card ---------- */

.card {
  position: relative;
  width: calc(var(--u) * var(--w));
  height: calc(var(--u) * var(--h));
  padding: calc(var(--u) * 10) calc(var(--u) * 8) calc(var(--u) * 8.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  isolation: isolate;
  border-radius: calc(var(--u) * 6);
  /* pearl finish: soft patches of warm and cool light over the lilac */
  background:
    radial-gradient(90% 55% at 25% 12%, #fdfafc, transparent 62%),
    radial-gradient(70% 45% at 85% 30%, #f6e9ee, transparent 60%),
    radial-gradient(85% 55% at 75% 92%, #e2ddf0, transparent 62%),
    radial-gradient(70% 45% at 10% 75%, #e9efee, transparent 60%),
    var(--card);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 calc(var(--u) * 3) calc(var(--u) * 10) rgba(0, 0, 0, 0.55);
}

/* a band of light that drifts across the card now and then */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(112deg, transparent 42%, rgba(255, 255, 255, 0.75) 50%, transparent 58%);
  background-size: 300% 100%;
  background-position: 120% 0;
}

/* fine paper grain */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35  0 0 0 0 .33  0 0 0 0 .38  0 0 0 .22 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* double-line frame with scooped corners, drawn once and stretched along the edges */
.border {
  position: absolute;
  inset: calc(var(--u) * 3);
  z-index: 1;
  pointer-events: none;
  border: calc(var(--u) * 7.5) solid transparent;
  border-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='90' fill='none' stroke='%231d2422'%3E%3Cpath stroke-width='2' d='M16 2H74A14 14 0 0 0 88 16V74A14 14 0 0 0 74 88H16A14 14 0 0 0 2 74V16A14 14 0 0 0 16 2Z'/%3E%3Cpath stroke-width='.9' d='M20.3 7H69.7A19 19 0 0 0 83 20.3V69.7A19 19 0 0 0 69.7 83H20.3A19 19 0 0 0 7 69.7V20.3A19 19 0 0 0 20.3 7Z'/%3E%3C/svg%3E") 30 / calc(var(--u) * 7.5) stretch;
}

.bubbles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.bubbles i {
  position: absolute;
  bottom: calc(var(--u) * -4);
  left: var(--x);
  width: calc(var(--u) * var(--s));
  height: calc(var(--u) * var(--s));
  border: max(1px, calc(var(--u) * 0.22)) solid var(--ink-soft);
  border-radius: 50%;
  opacity: 0;
}

.details,
.banner {
  position: relative;
  z-index: 2;
}

.details {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.crest,
.info {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.script {
  font-family: var(--script), "Snell Roundhand", "Apple Chancery", cursive;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

.arch {
  width: calc(var(--u) * 80);
  height: auto;
  overflow: visible;
}
.arch text {
  font-size: 112px;
  fill: var(--ink);
}

.flutes {
  width: calc(var(--u) * 46);
  height: auto;
  margin-top: calc(var(--u) * -6);
  overflow: visible;
}

.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--u) * 2.4);
  width: calc(var(--u) * 46);
  margin: calc(var(--u) * 3) 0 calc(var(--u) * 3.4);
  color: var(--ink);
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: max(1px, calc(var(--u) * 0.2));
  background: currentColor;
}
.divider svg {
  width: calc(var(--u) * 3);
  height: calc(var(--u) * 3);
  fill: currentColor;
}

.caps {
  margin: 0;
  color: var(--ink-soft);
  font-size: calc(var(--u) * 3.9);
  line-height: 1.25;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  /* letter-spacing adds a trailing gap; nudge back to keep text optically centred */
  padding-left: 0.32em;
}

.names {
  margin: calc(var(--u) * 2.2) 0 calc(var(--u) * 3);
  font-size: calc(var(--u) * 19 * var(--fit, 1));
  line-height: 0.98;
  color: var(--ink);
}
.names span {
  display: block;
  width: max-content;
  margin-inline: auto;
}
.names .amp {
  font-size: 0.66em;
  line-height: 0.9;
  margin-block: 0.06em 0;
}

.date {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  color: var(--ink);
}
.date .bar {
  width: max(1.5px, calc(var(--u) * 0.45));
  height: 3em;
  background: var(--ink);
}
.date .day {
  font-size: 3.5em;
  line-height: 0.9;
  padding: 0.08em 0.06em 0;
}

.venue {
  margin-top: calc(var(--u) * 3.6);
  line-height: 1.6;
  max-width: 20em;
  color: var(--ink);
}

.banner {
  margin-top: calc(var(--u) * 3);
  padding: calc(var(--u) * 2.9) calc(var(--u) * 2) calc(var(--u) * 2.9) calc(var(--u) * 2 + 0.32em);
  border-radius: calc(var(--u) * 1) calc(var(--u) * 1) calc(var(--u) * 1.6) calc(var(--u) * 1.6);
  background: var(--ink);
  color: var(--light);
  font-size: calc(var(--u) * 3.3);
  text-align: center;
  white-space: nowrap;
}
.banner span::before,
.banner span::after {
  content: "\2726";
  display: inline-block;
  letter-spacing: 0;
  font-size: 0.8em;
  opacity: 0.85;
}
.banner span::before {
  margin-right: 1.1em;
}
.banner span::after {
  margin-left: 0.78em;
}

/* ---------- landscape: two columns, like the printed card ---------- */

@media (min-aspect-ratio: 1/1) {
  .card {
    padding: calc(var(--u) * 9.5) calc(var(--u) * 11) calc(var(--u) * 8.5);
  }
  .details {
    flex-direction: row;
    justify-content: center;
    gap: calc(var(--u) * 4);
  }
  .crest {
    width: calc(var(--u) * 56);
  }
  .info {
    width: calc(var(--u) * 62);
  }
  .arch {
    width: calc(var(--u) * 56);
  }
  .flutes {
    width: calc(var(--u) * 37);
    margin-top: calc(var(--u) * -4);
  }
  .divider {
    flex-direction: column;
    width: auto;
    align-self: stretch;
    margin: calc(var(--u) * 6) 0;
  }
  .divider::before,
  .divider::after {
    width: max(1px, calc(var(--u) * 0.16));
    height: auto;
  }
  .divider svg {
    width: calc(var(--u) * 2.6);
    height: calc(var(--u) * 2.6);
  }
  .caps {
    font-size: calc(var(--u) * 2.9);
  }
  .names {
    font-size: calc(var(--u) * 14.5 * var(--fit, 1));
    margin: calc(var(--u) * 1.6) 0 calc(var(--u) * 2.2);
  }
  .venue {
    margin-top: calc(var(--u) * 2.6);
  }
  .banner {
    margin-top: calc(var(--u) * 2.4);
    padding-block: calc(var(--u) * 2);
    font-size: calc(var(--u) * 2.4);
  }
}

/* ---------- gallery (sits below the card once there are photos) ---------- */

.gallery {
  max-width: 900px;
  margin: 0 auto;
  padding: 8px var(--p) calc(var(--p) + 20px + env(safe-area-inset-bottom));
}

.frame {
  margin: 0;
  padding: 4px;
  border: 2px solid var(--ink);
  background: var(--mat);
}
.frame-inner {
  padding: 10px;
  border: 1px solid var(--ink);
}

.track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
  aspect-ratio: 1 / 1;
  max-height: 78vh;
  outline-offset: 4px;
}
.track::-webkit-scrollbar {
  display: none;
}
@media (min-width: 700px) {
  .track {
    aspect-ratio: 3 / 2;
  }
}

.slide {
  flex: 0 0 100%;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}
.slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 14px;
}
.counter {
  min-width: 6.5em;
  text-align: center;
  font-size: 13px;
  color: var(--light);
}

.nav {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1.5px solid var(--light);
  border-radius: 50%;
  background: transparent;
  color: var(--light);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.nav svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav:disabled {
  opacity: 0.3;
  cursor: default;
}
.nav:not(:disabled):active {
  background: rgba(255, 255, 255, 0.12);
}

/* ---------- font preview bar (only with ?fonts on the address) ---------- */

.fontbar {
  position: fixed;
  left: 50%;
  bottom: calc(10px + env(safe-area-inset-bottom));
  z-index: 10;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(20, 26, 24, 0.92);
  color: var(--light);
  font: 14px/1 system-ui, sans-serif;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}
.fontbar button {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: inherit;
  font-size: 18px;
  cursor: pointer;
}
.fontbar output {
  min-width: 11.5em;
  text-align: center;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  .track {
    scroll-behavior: smooth;
  }

  .crest > *,
  .divider,
  .info > *,
  .banner {
    opacity: 0;
    animation: rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
  .crest > .flutes { animation-delay: 0.25s; }
  .divider { animation-delay: 0.5s; }
  .info > :nth-child(1) { animation-delay: 0.6s; }
  .info > :nth-child(2) { animation-delay: 0.75s; }
  .info > :nth-child(3) { animation-delay: 1s; }
  .info > :nth-child(4) { animation-delay: 1.15s; }
  .banner { animation-delay: 1.4s; }

  .flute-left,
  .flute-right {
    transform-box: fill-box;
    transform-origin: 50% 100%;
    animation: clink-left 1.1s cubic-bezier(0.3, 1.5, 0.5, 1) 0.6s both;
  }
  .flute-right {
    animation-name: clink-right;
  }

  .sparks use {
    transform-box: fill-box;
    transform-origin: center;
    animation: twinkle 3.2s ease-in-out 1.4s infinite both;
  }
  .sparks use:nth-child(2) { animation-delay: 1.9s; animation-duration: 3.8s; }
  .sparks use:nth-child(3) { animation-delay: 2.5s; animation-duration: 2.9s; }
  .sparks use:nth-child(4) { animation-delay: 1.6s; animation-duration: 4.2s; }
  .sparks use:nth-child(5) { animation-delay: 2.9s; animation-duration: 3.5s; }
  .sparks use:nth-child(6) { animation-delay: 2.2s; animation-duration: 2.6s; }

  .card::before {
    animation: sheen 9s ease-in-out 2s infinite;
  }

  .bubbles i {
    animation: float var(--d) linear var(--delay) infinite;
  }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(calc(var(--u) * 3)); }
  to { opacity: 1; transform: none; }
}
@keyframes clink-left {
  from { transform: rotate(-9deg); }
  to { transform: none; }
}
@keyframes clink-right {
  from { transform: rotate(9deg); }
  to { transform: none; }
}
@keyframes twinkle {
  0%, 100% { opacity: 0.25; scale: 0.7; }
  50% { opacity: 1; scale: 1.1; }
}
@keyframes sheen {
  0% { background-position: 120% 0; }
  45%, 100% { background-position: -40% 0; }
}
@keyframes float {
  0% { opacity: 0; transform: translate(0, 0); }
  12% { opacity: 0.32; }
  50% { transform: translate(calc(var(--u) * var(--sway)), calc(var(--u) * var(--h) * -0.55)); }
  85% { opacity: 0.22; }
  100% { opacity: 0; transform: translate(0, calc(var(--u) * var(--h) * -1.08)); }
}