:root {
  --ground: #f6f0dc;
  --surface: #fefcf8;
  --ink: #332920;
  --ink-soft: #7d6c58;
  --accent: #b9895a;
  --accent-soft: #ede1cc;
  --on-accent: #fffaf0;
  --line: rgba(51, 41, 32, 0.14);
  --maroon: #591c2b;

  --font-display: "Fraunces", ui-serif, Georgia, serif;
  --font-body: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --font-script: "Alex Brush", cursive;
  --font-fine-serif: "Bookman Old Style", "URW Bookman", "Cormorant Garamond", Georgia, serif;
}

:root[data-theme="dark"] {
  --ground: #1b1712;
  --surface: #241f18;
  --ink: #f3ead9;
  --ink-soft: #b8a98f;
  --accent: #d1a768;
  --accent-soft: #3a2f20;
  --on-accent: #1b1712;
  --line: rgba(243, 234, 217, 0.14);
}

:root[data-theme="light"] {
  --ground: #f6f0dc;
  --surface: #fefcf8;
  --ink: #332920;
  --ink-soft: #7d6c58;
  --accent: #b9895a;
  --accent-soft: #ede1cc;
  --on-accent: #fffaf0;
  --line: rgba(51, 41, 32, 0.14);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.stage {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.85rem, 4vw, 3rem);
}

/* ---------- loading reveal ---------- */

.intro-seal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  pointer-events: none;
  background: var(--ground);
  animation: seal-fade 0.9s ease forwards;
  animation-delay: 0.5s;
}

.seal-photo {
  width: min(32vw, 230px);
  height: min(32vw, 230px);
  object-fit: contain;
}

@keyframes seal-fade {
  0% { opacity: 1; transform: scale(1); }
  60% { opacity: 1; transform: scale(1.08); }
  100% { opacity: 0; transform: scale(1.35); visibility: hidden; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-seal { animation: none; opacity: 0; visibility: hidden; }
}

/* ---------- homepage hero ---------- */

.hero {
  width: min(92vw, 40rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: clamp(0.46rem, 2.3vh, 0.85rem);
}

.script-line {
  margin: 0;
  font-family: var(--font-script);
  font-size: clamp(2.4rem, 6.3vw, 4.2rem);
  line-height: 1.2;
  color: var(--ink);
}

.script-line--small {
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  margin: 0.25rem 0 0;
}

/* ---------- photobooth frame ---------- */

.photobooth {
  position: relative;
  width: clamp(160px, min(32vw, 25vh), 400px);
  aspect-ratio: 516 / 1269;
  margin: clamp(0.29rem, 1.7vh, 0.75rem) 0;
  filter: drop-shadow(0 1.75rem 2.5rem rgba(30, 20, 10, 0.22));
}

.tray-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
  pointer-events: none;
}

.strip-window {
  position: absolute;
  left: 32%;
  right: 32%;
  top: 15%;
  bottom: 10%;
  overflow: hidden;
  z-index: 2;
}

.strip-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
  transform: translateY(-108%);
  animation: strip-print 7.7s ease 2.3s both;
  will-change: transform;
}

@keyframes strip-print {
  0%     { transform: translateY(-108%); }
  7.2%   { transform: translateY(-75%); }
  17.1%  { transform: translateY(-75%); }
  21.6%  { transform: translateY(-63%); }
  31.5%  { transform: translateY(-63%); }
  36%    { transform: translateY(-51%); }
  46%    { transform: translateY(-51%); }
  50.5%  { transform: translateY(-39%); }
  60.4%  { transform: translateY(-39%); }
  64.9%  { transform: translateY(-27%); }
  74.8%  { transform: translateY(-27%); animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1); }
  100%   { transform: translateY(0%); }
}

@media (prefers-reduced-motion: reduce) {
  .strip-photo { animation: none; transform: translateY(0); }
}

.save-the-date {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--ink-soft);
}

.wedding-date {
  margin: -0.3rem 0 0;
  font-family: var(--font-fine-serif);
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  color: var(--maroon);
}

.location {
  margin: -0.3rem 0 0;
  font-family: var(--font-fine-serif);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.btn-invite {
  -webkit-tap-highlight-color: transparent;
  margin-top: clamp(0.46rem, 2.3vh, 1rem);
  display: inline-block;
  font-family: var(--font-script);
  font-size: clamp(1.5rem, 2.76vw, 1.7rem);
  font-weight: 400;
  padding: clamp(0.69rem, 1.61vw, 0.9rem) clamp(2rem, 3.9vw, 2.6rem);
  border-radius: 999px;
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-invite:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  box-shadow: 0 0.6rem 1.2rem -0.5rem color-mix(in srgb, var(--accent) 60%, transparent);
}

.btn-invite:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 55%, transparent);
}

/* ---------- envelope ---------- */

.invite-gate {
  position: relative;
  width: min(92vw, 40rem);
  display: flex;
  justify-content: center;
}

.envelope {
  position: relative;
  width: min(92vw, 27rem);
  aspect-ratio: 3 / 2;
  perspective: 1400px;
  cursor: pointer;
}

.envelope-pocket {
  position: absolute;
  inset: 0;
  background-color: #63213a;
  background-image: url("images/paper_noise.png");
  background-size: 45px 45px;
  background-blend-mode: overlay;
  border-radius: 0.25rem;
  box-shadow:
    0 2rem 3.5rem -1.75rem rgba(20, 5, 10, 0.55),
    0 0.35rem 0.6rem -0.2rem rgba(20, 5, 10, 0.3);
  overflow: hidden;
  z-index: 2;
}

.envelope-pocket::before,
.envelope-pocket::after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 55%;
  height: 100%;
}

.envelope-pocket::before {
  left: 0;
  background: linear-gradient(115deg, rgba(0, 0, 0, 0.18) 49%, rgba(255, 255, 255, 0.1) 50%, transparent 51%);
}

.envelope-pocket::after {
  right: 0;
  background: linear-gradient(65deg, transparent 49%, rgba(255, 255, 255, 0.1) 50%, rgba(0, 0, 0, 0.18) 51%);
}

.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 62%;
  transform-origin: top center;
  transition: transform 1.1s cubic-bezier(0.6, 0.05, 0.3, 1);
  z-index: 3;
}

.flap-grain {
  mix-blend-mode: overlay;
  opacity: 0.55;
}

.flap-crease {
  mix-blend-mode: soft-light;
}

.flap-edge {
  stroke: rgba(255, 255, 255, 0.22);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.flap-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.envelope-flap-sheen {
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  background: linear-gradient(200deg, rgba(255, 255, 255, 0.3), transparent 40%);
  mix-blend-mode: overlay;
  pointer-events: none;
}

.seal {
  position: absolute;
  top: 59%;
  left: 50%;
  width: 6.8rem;
  height: 6.8rem;
  object-fit: contain;
  transform: translate(-50%, -50%) rotate(-8deg);
  filter: drop-shadow(0 0.3rem 0.4rem rgba(20, 10, 5, 0.45));
  transition: transform 0.5s ease, opacity 0.5s ease;
  z-index: 4;
  pointer-events: none;
}

.envelope.is-open .envelope-flap {
  transform: rotateX(-165deg);
}

.envelope.is-open .seal {
  transform: translate(-50%, -50%) rotate(-8deg) scale(0.4);
  opacity: 0;
}

.envelope.is-closing {
  animation: envelope-fade-out 0.5s ease forwards;
}

@keyframes envelope-fade-out {
  to { opacity: 0; transform: scale(0.96); }
}

@keyframes card-reveal {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- invitation card ---------- */

.card {
  position: relative;
  width: 100%;
  max-width: 35rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  box-shadow:
    0 2rem 4rem -2rem rgba(51, 41, 32, 0.4),
    0 0.4rem 0.8rem -0.3rem rgba(51, 41, 32, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: card-reveal 0.7s ease both;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/paper_noise.png");
  background-size: 45px 45px;
  mix-blend-mode: multiply;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

.venue-photo {
  display: block;
  width: 65%;
  margin: 0 auto;
  height: auto;
  aspect-ratio: 2810 / 1820;
  object-fit: contain;
}

.card[hidden] {
  display: none;
}

.btn-back-home {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem 0.4rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.btn-back-home:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.btn-back-home:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card-main {
  position: relative;
  padding: clamp(0.5rem, 1.5vw, 0.85rem) clamp(2rem, 6vw, 3.5rem) 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.75rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.save-the-date-heading {
  margin: 0;
  font-family: var(--font-script);
  font-weight: 600;
  font-size: clamp(2.4rem, 7.5vw, 4rem);
  word-spacing: 0.15em;
  color: var(--ink);
}

.sd-script {
  font-weight: 400;
}

.sd-serif {
  font-family: var(--font-fine-serif);
  font-weight: 300;
}

.details {
  margin: 0.5rem 0 0;
  max-width: 32ch;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.5;
}

/* ---------- rsvp ---------- */

.rsvp {
  position: relative;
  padding: 4.25rem clamp(2rem, 6vw, 3.5rem) clamp(2rem, 6vw, 3.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  border-top: 1px solid var(--line);
  margin-top: 1.5rem;
}

.btn-back {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.btn-back:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.btn-back:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rsvp-panel {
  width: 100%;
  max-width: 22rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.rsvp-panel[hidden] {
  display: none;
}

.rsvp-label {
  margin: 0;
  font-family: var(--font-fine-serif);
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1.4;
  text-align: center;
}

.rsvp-thanks {
  font-family: var(--font-fine-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.5rem;
}

.rsvp-actions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.btn {
  font-family: var(--font-fine-serif);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 0.85rem 1.1rem;
  border-radius: 0.6rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-align: center;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-yes {
  background: color-mix(in srgb, var(--maroon) 80%, white 20%);
  color: var(--on-accent);
}

.btn-yes:hover { transform: translateY(-1px); box-shadow: 0 0.5rem 1rem -0.5rem color-mix(in srgb, var(--maroon) 70%, transparent); }

.btn-no {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-no:hover { border-color: var(--accent); color: var(--ink); }

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-fine-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.field input,
.field textarea {
  font-family: var(--font-fine-serif);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.6rem 0.7rem;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.field-hint {
  margin: -0.4rem 0 0;
  font-family: var(--font-fine-serif);
  font-size: 0.9rem;
  text-align: center;
  color: var(--ink-soft);
}