/* ============================================================
   K & K — engagement invitation
   1. tokens   2. base   3. envelope stage   4. opening animation
   5. site     6. responsive   7. reduced motion
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root {
  --bg:            #F7F3EA;
  --bg-2:          #EFE9DD;
  --card:          #FBF9F3;
  --ink:           #2D2A26;
  --ink-2:         #6F6960;
  --line:          #D8D0C2;
  --gold:          #B29A6A;
  --gold-deep:     #8E7745;

  --serif: "Cormorant Garamond", "Iowan Old Style", Palatino, Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* envelope geometry, overwritten from config.js */
  --env-aspect:  1.4964;
  --flap-h:      64.278%;
  --seal-w:      21%;
  --seal-y:      64.278%;

  --env-w: min(86vw, 34rem);
  --paper-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(120% 80% at 50% 0%, #FBF8F1 0%, var(--bg) 55%, var(--bg-2) 100%);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
}

body.is-sealed { overflow: hidden; height: 100%; }

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

a { color: inherit; }

.visually-hidden {
  /* position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0; */
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 0.86rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold-deep);
  text-align: center;
  margin-bottom: 8%;
}

:focus-visible {
  outline: 2px solid var(--gold-deep);
  outline-offset: 4px;
  border-radius: 2px;
}

/* ---------- 3. envelope stage ---------- */
.stage {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: max(1.25rem, env(safe-area-inset-top)) 1.25rem max(1.25rem, env(safe-area-inset-bottom));
  background-color: var(--bg);
  background-image:
    radial-gradient(110% 75% at 50% 42%, #FCFAF4 0%, var(--bg) 52%, var(--bg-2) 100%);
}

.stage__inner {
  display: grid;
  justify-items: center;
  gap: clamp(1.25rem, 4vh, 2.5rem);
  transition: transform 900ms var(--paper-ease), opacity 500ms ease;
}

/* loading state: hold the envelope back until the artwork is decoded */
.stage.is-loading .stage__inner { opacity: 0; transform: translateY(14px); }

.stage__hint {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  transition: opacity 400ms ease;
}

.stage.is-open .stage__hint { opacity: 0; }

/* the envelope itself is the button */
.envelope {
  position: relative;
  width: var(--env-w);
  aspect-ratio: var(--env-aspect);
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  perspective: 1200px;
  perspective-origin: 50% 0%;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: transform 500ms var(--paper-ease);
}

.envelope:active { transform: scale(0.992); }
.stage.is-open .envelope { cursor: default; }

.envelope__shadow {
  position: absolute;
  left: 4%; right: 4%;
  bottom: -3.5%;
  height: 12%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(78, 66, 48, 0.24), rgba(78, 66, 48, 0) 70%);
  filter: blur(6px);
  z-index: 0;
}

.envelope__body {
  position: relative;
  width: 100%;
  z-index: 2;
  pointer-events: none;
}

.envelope__flap {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: var(--flap-h);
  transform-origin: 50% 0%;
  transform-style: preserve-3d;
  backface-visibility: visible;
  z-index: 3;
  pointer-events: none;
  will-change: transform;
}

.envelope__flap img { width: 100%; height: 100%; }

.envelope__seal {
  position: absolute;
  left: 50%;
  top: var(--seal-y);
  width: var(--seal-w);
  transform: translate(-50%, -50%);
  transform-origin: 50% 50%;
  z-index: 4;
  pointer-events: none;
  filter: drop-shadow(0 2px 3px rgba(85, 64, 30, 0.22));
}

/* the card that lives inside the envelope */
.insert {
  position: absolute;
  left: 7%;
  width: 86%;
  bottom: 4%;
  height: 88%;
  z-index: 1;                 /* behind the body: it is inside the envelope */
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 0.75rem;
  padding: 6% 8%;
  background: linear-gradient(170deg, #FDFCF7 0%, var(--card) 60%, #F5F1E6 100%);
  border: 1px solid rgba(178, 154, 106, 0.35);
  box-shadow: 0 10px 22px rgba(80, 66, 44, 0.16);
  will-change: transform;
}

.insert__rule { width: 2.25rem; height: 1px; background: var(--gold); opacity: 0.75; }

.insert__names {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.1rem, 4.6vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
}

.insert__date {
  font-size: clamp(0.52rem, 1.9vw, 0.7rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* ---------- 4. opening animation ---------- */

/* seal: fade + settle down, 520ms */
/* .stage.is-open .envelope__seal {
  opacity: 0;
  transform: translate(-50%, -48%) scale(0.85);
  transition: opacity 520ms ease, transform 520ms var(--paper-ease);
} */

.stage.is-open .envelope__seal {
  opacity: 1;
  transform: translate(-50%, -50%);
}

/* flap: real paper swinging back over the top edge */
/* .stage.is-open .envelope__flap {
  transform: rotateX(-168deg);
  transition: transform 1150ms var(--paper-ease) 330ms, filter 700ms ease 700ms;
  filter: brightness(0.965);
} */

/* flap: real paper swinging back over the top edge */
.stage.is-open .envelope__flap {
  transform: translateY(-2.5%) rotateX(-168deg);
  transition: transform 1150ms var(--paper-ease) 330ms,
              filter 700ms ease 700ms;
  filter: brightness(0.965);
}

/* Keep the flap visually connected to the envelope body
   while it is fully open. */
.stage.is-flipped .envelope__flap {
  z-index: 0;
  transform: translateY(-1.5%) rotateX(-168deg);
}

/* once past vertical the flap belongs behind the envelope */
.stage.is-flipped .envelope__flap { z-index: 0; }

/* card: rides up out of the pocket */
.stage.is-emerging .insert {
  transform: translateY(-104%) scale(1.02);
  transition: transform 1250ms var(--paper-ease);
}

.stage.is-emerging .stage__inner {
  transform: translateY(38%) scale(0.94);
}

/* final beat: the card grows into the page */
.stage.is-expanding .insert {
  transform: translateY(-104%) scale(1.75);
  opacity: 0;
  transition: transform 900ms var(--paper-ease), opacity 560ms ease;
}

.stage.is-expanding {
  opacity: 0;
  transition: opacity 760ms ease 140ms;
}

.stage.is-expanding .envelope { opacity: 0; transition: opacity 500ms ease; }

.stage.is-done { display: none; }

/* ---------- 5. site ---------- */
.site {
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 900ms ease, transform 1100ms var(--paper-ease);
  padding: 0 1.4rem;
  margin: 0 auto;
  max-width: 62rem;
}

.site.is-visible { opacity: 1; transform: none; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 800ms ease, transform 800ms var(--paper-ease); }
.reveal.in { opacity: 1; transform: none; }

/* hero */
.hero {
  min-height: 78svh;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  padding: 4rem 0 3rem;
}

.hero__eyebrow {
  margin: 0 0 clamp(1.5rem, 5vh, 2.75rem);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.hero__names {
  display: grid;
  justify-items: center;
  gap: 0.1em;
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.9rem, 13vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: 0.005em;
}

.hero__amp {
  font-size: 0.42em;
  font-style: italic;
  color: var(--gold-deep);
  line-height: 1;
  padding: 0.12em 0;
}

.hero__line {
  margin: clamp(1.4rem, 4vh, 2.2rem) 0 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.4vw, 1.3rem);
  font-style: italic;
  color: var(--ink-2);
}

.hero__date {
  margin: 1.1rem 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__mark {
  width: 1px;
  height: clamp(2.5rem, 8vh, 4.5rem);
  margin-top: clamp(2rem, 6vh, 3.5rem);
  background: linear-gradient(to bottom, var(--gold), rgba(178, 154, 106, 0));
}

/* photo board */
.board { padding: clamp(2rem, 8vh, 5rem) 0; }

.board__grid {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 44rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2.4rem, 7vw, 4.25rem) clamp(1.5rem, 6vw, 3.5rem);
}

.photo {
  position: relative;
  padding: 0.55rem 0.55rem 2.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 8px 20px rgba(84, 70, 48, 0.12);
  transition: transform 500ms var(--paper-ease), box-shadow 500ms ease;
}

.photo:nth-child(1) { transform: rotate(-1.6deg); }
.photo:nth-child(2) { transform: rotate(1.1deg)  translateY(1.1rem); }
.photo:nth-child(3) { transform: rotate(1.4deg); }
.photo:nth-child(4) { transform: rotate(-1deg)   translateY(0.8rem); }

.photo:hover, .photo:focus-within {
  transform: rotate(0deg) translateY(-3px);
  box-shadow: 0 14px 28px rgba(84, 70, 48, 0.17);
}

.photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--bg-2);
}

/* the pin */
.photo::before,
.photo::after { content: ""; position: absolute; left: 50%; }

.photo::before {              /* pin head */
  top: -0.42rem;
  width: 0.85rem; height: 0.85rem;
  transform: translateX(-50%);
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, #F0E2C4 0%, var(--gold) 45%, var(--gold-deep) 100%);
  box-shadow: 0 2px 3px rgba(70, 55, 30, 0.35);
  z-index: 2;
}

.photo::after {               /* pin shaft shadow on the paper */
  top: 0.32rem;
  width: 2px; height: 0.5rem;
  transform: translateX(-50%) rotate(6deg);
  background: linear-gradient(to bottom, rgba(90, 74, 46, 0.4), rgba(90, 74, 46, 0));
}

/* details card */
.details { padding: clamp(1rem, 4vh, 2.5rem) 0; display: grid; justify-items: center; }

.card {
  width: min(100%, 27rem);
  padding: clamp(2rem, 7vw, 3.25rem) clamp(1.5rem, 6vw, 3rem);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(84, 70, 48, 0.09);
  text-align: center;
}

.card__title,
.section__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 0.86rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.card__title { margin-bottom: 1.9rem; }

.card__list { margin: 0; display: grid; gap: 1.15rem; }

.card__row { display: grid; gap: 0.2rem; }

.card__row + .card__row { padding-top: 1.15rem; border-top: 1px solid rgba(216, 208, 194, 0.7); }

.card__row dt {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.card__row dd {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 4.5vw, 1.45rem);
  line-height: 1.35;
}

/* venue + contact */
.venue, .contact {
  padding: clamp(3rem, 10vh, 6rem) 0;
  text-align: center;
  display: grid;
  justify-items: center;
}

.section__title { margin-bottom: 1.6rem; }

.venue__name, .contact__name {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 6.5vw, 2.4rem);
  line-height: 1.25;
}

.venue__location { margin: 0.35rem 0 0; color: var(--ink-2); }

.venue__address {
  margin: 0.9rem 0 2rem;
  max-width: 24rem;
  font-style: normal;
  color: var(--ink-2);
  font-size: 0.94rem;
}

.contact__phone { margin: 0.45rem 0 2rem; }

.contact__phone a {
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  letter-spacing: 0.06em;
}

.contact__phone a:hover { border-color: var(--gold); }

.contact__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; justify-content: center; }

.btn {
  display: inline-block;
  padding: 0.95rem 2.1rem;
  border: 1px solid var(--gold);
  color: var(--gold-deep);
  background: transparent;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background-color 350ms ease, color 350ms ease;
  touch-action: manipulation;
}

.btn:hover { background: var(--gold); color: #FCFAF4; }

.btn--quiet { border-color: var(--line); color: var(--ink-2); }
.btn--quiet:hover { background: var(--bg-2); color: var(--ink); border-color: var(--line); }

/* footer */
.footer {
  padding: clamp(3rem, 9vh, 5rem) 0 clamp(2.5rem, 6vh, 4rem);
  text-align: center;
  border-top: 1px solid rgba(216, 208, 194, 0.8);
}

.footer__love { margin: 0; font-family: var(--serif); font-style: italic; color: var(--ink-2); }

.footer__couple {
  margin: 0.5rem 0 1.5rem;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 5vw, 1.6rem);
}

.footer__year { margin: 0; font-size: 0.7rem; letter-spacing: 0.2em; color: var(--ink-2); }

/* ---------- 6. responsive ---------- */
@media (max-width: 400px) {
  :root { --env-w: 88vw; }
  .board__grid { grid-template-columns: 1fr; max-width: 17rem; gap: 2.9rem; }
  .photo:nth-child(n) { transform: rotate(0deg); }
  .photo:nth-child(odd)  { transform: rotate(-1.2deg); }
  .photo:nth-child(even) { transform: rotate(1.2deg); }
}

@media (min-width: 1440px) {
  :root { --env-w: min(46vw, 38rem); }
}

@media (max-height: 560px) {
  :root { --env-w: min(calc(70vh * 1.4964), 86vw); }
  .hero { min-height: auto; padding: 3rem 0 2rem; }
}

/* ---------- 7. reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .stage__inner,
  .envelope,
  .envelope__flap,
  .envelope__seal,
  .insert,
  .photo,
  .site,
  .reveal { transition-duration: 220ms !important; transition-delay: 0ms !important; }

  .stage.is-open .envelope__flap { transform: none; filter: none; }
  .stage.is-emerging .insert { transform: none; }
  .stage.is-emerging .stage__inner { transform: none; }
  .stage.is-expanding .insert { transform: none; opacity: 0; }
  .stage.is-open .envelope__seal { transform: translate(-50%, -50%); }
  .site { transform: none; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

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