/* =========================================================
   ۱. متغیرها و پایه
   ========================================================= */
:root {
  /* پالت رنگی: عاج، سفید گرم، کرم، طلایی شامپاینی کم‌رنگ، قهوه‌ای تیره */
  --c-ivory: #faf6ee;
  --c-warm-white: #ffffff;
  --c-cream: #f1e7d2;
  --c-paper: #fbf8f1;
  --c-paper-dark: #f3ecdd;
  --c-gold: #b08d57;
  --c-gold-light: #d9c7a0;
  --c-gold-deep: #8c6a3f;
  --c-charcoal: #2b2319;
  --c-charcoal-soft: #6b5d4c;
  --c-shadow: rgba(43, 35, 25, 0.18);

  --font-display: "Noto Nastaliq Urdu", "Vazirmatn", serif;
  --font-body: "Vazirmatn", Tahoma, sans-serif;
  --font-latin: "Cormorant Garamond", Georgia, serif;

  --ease-silk: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);

  --section-pad-y: clamp(48px, 9vw, 96px);
  --content-w: 640px;
}

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

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

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background: var(--c-ivory);
  color: var(--c-charcoal);
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.9;
  font-size: 16px;
}

body.intro-active {
  overflow: hidden;
  height: 100vh;
}

h1,
h2,
h3,
p {
  margin: 0;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

a {
  color: inherit;
}

.container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* خط تزئینی نازک با گل میخک طلایی در وسط */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 28px auto;
  max-width: 220px;
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(
    to var(--divider-dir, left),
    transparent,
    var(--c-gold-light) 50%,
    transparent
  );
}
.divider svg {
  flex-shrink: 0;
  width: 9px;
  height: 9px;
}

/* پدیدار شدن آرام بخش‌ها هنگام اسکرول */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.9s var(--ease-soft),
    transform 0.9s var(--ease-soft);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   ۲. صفحه آغازین: صحنه پاکت نامه
   ========================================================= */
.intro-screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(
    120% 90% at 50% 20%,
    var(--c-cream) 0%,
    var(--c-ivory) 55%,
    var(--c-ivory) 100%
  );
  transition: opacity 0.9s var(--ease-soft);
  overflow: hidden;
}
.intro-screen.is-morphing {
  overflow: visible;
  /* پس‌زمینه تا پایان بزرگ‌شدن نامه می‌ماند تا صفحه زیر پیدا نشود */
}
.intro-screen.is-opening {
  overflow: visible;
}
.intro-screen.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.intro-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  width: 100%;
}

.intro-eyebrow {
  font-family: var(--font-display);
  font-size: clamp(20px, 5vw, 26px);
  color: var(--c-gold-deep);
  margin-bottom: clamp(24px, 6vw, 40px);
  letter-spacing: 0.3px;
}

.intro-hint {
  font-size: 14px;
  color: var(--c-charcoal-soft);
  margin-top: clamp(28px, 6vw, 44px);
  margin-bottom: 18px;
}

.btn-open {
  appearance: none;
  border: 1px solid var(--c-gold);
  background: transparent;
  color: var(--c-gold-deep);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 38px;
  border-radius: 2px;
  letter-spacing: 0.5px;
  transition:
    background 0.4s var(--ease-soft),
    color 0.4s var(--ease-soft),
    box-shadow 0.4s var(--ease-soft);
}
.btn-open:hover,
.btn-open:focus-visible {
  background: var(--c-gold);
  color: var(--c-warm-white);
  box-shadow: 0 6px 20px -6px var(--c-shadow);
}
.btn-open:focus-visible {
  outline: 2px solid var(--c-gold-deep);
  outline-offset: 3px;
}
.btn-open:disabled {
  opacity: 0.5;
  cursor: default;
}
.btn-open.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* ---- پاکت به سبک CodePen (border triangles) ----
   https://codepen.io/MrBlank/pen/JjXxovL
   flap/pocket با border؛ باز شدن: rotateX(180deg) از transform-origin:top
*/
.envelope-scene {
  --env-w: clamp(260px, 72vw, 340px);
  --env-h: calc(var(--env-w) * 0.643);
  --color-env: #e6d4a8;
  --color-env2: #d9c48e;
  --color-flap: #c4a46a;
  width: var(--env-w);
  padding-top: 24px;
  padding-bottom: 12px;
  margin: 0 auto;
  overflow: visible;
}

.envelope {
  position: relative;
  width: var(--env-w);
  height: var(--env-h);
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
  margin: 0 auto;
  background-color: var(--color-flap);
  box-shadow: 0 8px 28px rgba(43, 35, 25, 0.22);
  cursor: pointer;
  /* برای rotateX درب */
  perspective: 1000px;
}
.envelope:focus-visible {
  outline: 2px solid var(--c-gold-deep);
  outline-offset: 6px;
}
.envelope.is-opening,
.envelope.is-opened {
  cursor: default;
}

.front {
  position: absolute;
  width: 0;
  height: 0;
  z-index: 3;
}

/* درب بالا — مثلث با border (کلید انیمیشن درست CodePen) */
.flap {
  border-left: calc(var(--env-w) / 2) solid transparent;
  border-right: calc(var(--env-w) / 2) solid transparent;
  border-bottom: calc(var(--env-h) / 2 - 8px) solid transparent;
  border-top: calc(var(--env-h) / 2 + 8px) solid var(--color-flap);
  transform-origin: top;
  pointer-events: none;
}

/* جیب جلو */
.pocket {
  border-left: calc(var(--env-w) / 2) solid var(--color-env);
  border-right: calc(var(--env-w) / 2) solid var(--color-env);
  border-bottom: calc(var(--env-h) / 2) solid var(--color-env2);
  border-top: calc(var(--env-h) / 2) solid transparent;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
}

/* نامه داخل پاکت */
.letter {
  position: relative;
  background-color: #fffaf3;
  width: 90%;
  height: 90%;
  margin-left: auto;
  margin-right: auto;
  top: 5%;
  border-radius: 4px;
  box-shadow: 0 2px 26px rgba(43, 35, 25, 0.12);
  overflow: hidden;
  border: 1px solid #d4ba8a;
}

/* ---- بند SVG: دقیقاً اندازه پاکت، گره وسط ---- */
.envelope-string-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none;
  overflow: visible;
}
.string-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.string-path {
  fill: none;
  stroke: #fbf6ec;
  stroke-width: 5;
  filter: drop-shadow(0 1px 2px rgba(43, 35, 25, 0.4));
}
.envelope-seal {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 32px;
  height: 32px;
  margin-left: -16px;
  margin-top: -16px;
  border-radius: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(
    circle at 30% 28%,
    #f3e6c4,
    #c9a96e 55%,
    #8c6a3f 100%
  );
  border: 1px solid rgba(140, 106, 63, 0.45);
  box-shadow:
    0 2px 6px rgba(43, 35, 25, 0.3),
    inset 0 1px 1px rgba(255, 255, 255, 0.4);
  transition:
    opacity 0.7s ease 0.35s,
    transform 0.7s ease 0.35s;
}
.envelope.is-untying .envelope-seal {
  opacity: 0;
  transform: scale(0.45);
}
.seal-heart {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: 15px;
  color: #fbf6ec;
  line-height: 1;
}

/* سقوط کل بند با جاذبه */
.envelope-string-wrap.is-falling {
  position: fixed !important;
  inset: auto !important;
  margin: 0 !important;
  z-index: 300 !important;
  pointer-events: none;
  animation: gravity-drop 1.35s cubic-bezier(0.4, 0, 0.8, 0.05) forwards;
}
@keyframes gravity-drop {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  10% {
    transform: translateY(10px) rotate(-5deg);
    opacity: 1;
  }
  100% {
    transform: translateY(120vh) translateX(30px) rotate(48deg);
    opacity: 0;
  }
}
/* تأخیر باز شدن درب تا بند اول باز شود */
.envelope.close .flap {
  transform: rotateX(0deg);
  transition:
    transform 0.45s 0.15s ease,
    z-index 1s;
  z-index: 5;
}
.envelope.open .flap {
  transform: rotateX(180deg);
  transition:
    transform 0.5s 0.35s ease,
    z-index 0.7s;
  z-index: 1;
}
.envelope.close .letter {
  transform: translateY(0);
  transition:
    transform 0.45s ease,
    z-index 1s;
  z-index: 1;
}
.envelope.open .letter {
  transform: translateY(calc(var(--env-h) / -2.6));
  transition:
    transform 0.5s 0.85s ease,
    z-index 0.7s;
  z-index: 2;
}

/* محتوای نامه */
.letter-cover {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #fffdf8 0%, #f3e6c8 100%);
  transition: opacity 0.7s var(--ease-soft);
}
.letter.is-unfolded .letter-cover {
  opacity: 0;
  pointer-events: none;
}
.letter-body {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 14px 12px;
  background: #fffaf3;
}
.letter-monogram {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: clamp(28px, 8vw, 36px);
  color: var(--c-gold-deep);
  line-height: 1;
}
.letter-kicker {
  font-family: var(--font-display);
  font-size: clamp(13px, 3vw, 16px);
  color: var(--c-charcoal-soft);
  margin-bottom: 6px;
}
.letter-names {
  font-family: var(--font-display);
  font-size: clamp(16px, 4vw, 22px);
  color: var(--c-charcoal);
  line-height: 1.45;
  margin-bottom: 10px;
}
.letter-date {
  font-family: var(--font-display);
  font-size: clamp(12px, 2.8vw, 15px);
  color: var(--c-gold-deep);
  margin-bottom: 4px;
}
.letter-note {
  font-size: clamp(11px, 2.4vw, 13px);
  color: var(--c-charcoal-soft);
}

/* بزرگ شدن نامه تا تمام صفحه */
.letter.is-expanding {
  position: fixed;
  z-index: 120;
  margin: 0;
  top: 0;
  border-radius: 0;
  overflow: hidden;
  transition: none;
}
.letter.is-expanding .letter-cover {
  opacity: 0;
}
.letter.is-expanding.is-filling .letter-body {
  opacity: 0;
  transition: opacity 0.65s var(--ease-soft);
}
.letter.is-expanding.is-filling {
  background: var(--c-ivory);
  border-color: transparent;
  box-shadow: none;
}
.letter.is-handoff {
  opacity: 0;
  transition: opacity 0.5s var(--ease-soft) !important;
}

.intro-screen.is-morphing .intro-eyebrow,
.intro-screen.is-morphing .intro-hint,
.intro-screen.is-morphing .btn-open {
  opacity: 0;
  transition: opacity 0.45s ease;
}
.intro-screen.is-morphing .envelope {
  opacity: 0;
  transition: opacity 0.5s ease;
}
/* =========================================================
   ۳. دعوت‌نامه اصلی
   ========================================================= */
.main-invitation {
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity 0.9s var(--ease-soft),
    transform 0.9s var(--ease-soft),
    visibility 0s linear 0.9s;
}
.main-invitation.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition:
    opacity 0.9s var(--ease-soft),
    transform 0.9s var(--ease-soft),
    visibility 0s;
}

.section {
  padding: var(--section-pad-y) 0;
  position: relative;
}
.section-alt {
  background: var(--c-cream);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 4.5vw, 28px);
  color: var(--c-gold-deep);
  text-align: center;
  margin-bottom: 8px;
}

/* ---- بخش قهرمان / معرفی ---- */
.hero {
  text-align: center;
  padding-top: clamp(56px, 12vw, 110px);
  overflow: hidden;
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-gold-light);
  opacity: 0.5;
  animation: float-up 14s linear infinite;
}
@keyframes float-up {
  from {
    transform: translateY(10vh) scale(1);
    opacity: 0;
  }
  10% {
    opacity: 0.55;
  }
  90% {
    opacity: 0.35;
  }
  to {
    transform: translateY(-40vh) scale(0.6);
    opacity: 0;
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  font-family: var(--font-display);
  font-size: clamp(18px, 4vw, 22px);
  color: var(--c-charcoal-soft);
  margin-bottom: clamp(18px, 4vw, 28px);
}

.hero-names {
  font-family: var(--font-display);
  font-size: clamp(34px, 9vw, 54px);
  color: var(--c-charcoal);
  line-height: 1.5;
}
.hero-names .amp {
  display: block;
  font-family: var(--font-latin);
  font-style: italic;
  color: var(--c-gold);
  font-size: clamp(20px, 4.5vw, 26px);
  margin: 4px 0;
}

.hero-names-latin {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: clamp(15px, 3.5vw, 18px);
  color: var(--c-charcoal-soft);
  letter-spacing: 1px;
  margin-top: 10px;
}

.hero-message {
  max-width: 480px;
  margin: 28px auto 0;
  color: var(--c-charcoal-soft);
  font-size: clamp(14.5px, 2.6vw, 16px);
  line-height: 2.1;
}

.hero-date {
  margin-top: 26px;
  font-family: var(--font-display);
  font-size: clamp(16px, 3.5vw, 19px);
  color: var(--c-gold-deep);
}

/* ---- بخش جزئیات مراسم ---- */
.details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(32px, 6vw, 48px);
}
.detail-card {
  position: relative;
  background: var(--c-warm-white);
  border: 1px solid var(--c-gold-light);
  padding: 28px 20px;
  text-align: center;
}
.detail-card::before,
.detail-card::after,
.detail-card .corner-tl,
.detail-card .corner-br {
  content: none;
}
.detail-card::before {
  content: "";
  position: absolute;
  top: 6px;
  right: 6px;
  bottom: 6px;
  left: 6px;
  border: 1px solid var(--c-gold-light);
  pointer-events: none;
}
.detail-label {
  font-size: 13px;
  color: var(--c-charcoal-soft);
  margin-bottom: 10px;
}
.detail-value {
  font-family: var(--font-display);
  font-size: clamp(18px, 4vw, 21px);
  color: var(--c-charcoal);
}

/* ---- بخش شمارش معکوس ---- */
.countdown {
  display: flex;
  justify-content: center;
  gap: clamp(10px, 3.5vw, 22px);
  margin-top: clamp(28px, 6vw, 44px);
  flex-wrap: wrap;
}
.countdown-unit {
  min-width: 68px;
  text-align: center;
}
.countdown-number {
  font-family: var(--font-latin);
  font-size: clamp(30px, 7vw, 42px);
  color: var(--c-gold-deep);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.countdown-label {
  font-size: 12.5px;
  color: var(--c-charcoal-soft);
  margin-top: 6px;
}
.countdown-message {
  text-align: center;
  font-family: var(--font-display);
  font-size: clamp(19px, 4vw, 23px);
  color: var(--c-gold-deep);
  margin-top: clamp(28px, 6vw, 44px);
}

/* ---- بخش مکان ---- */
.location-inner {
  text-align: center;
}
.venue-name {
  font-family: var(--font-display);
  font-size: clamp(19px, 4vw, 23px);
  color: var(--c-charcoal);
  margin-top: clamp(24px, 5vw, 34px);
}
.venue-address {
  color: var(--c-charcoal-soft);
  font-size: 14.5px;
  max-width: 420px;
  margin: 10px auto 0;
}
.btn-map {
  display: inline-block;
  margin-top: 26px;
  border: 1px solid var(--c-gold);
  color: var(--c-gold-deep);
  text-decoration: none;
  padding: 13px 30px;
  border-radius: 2px;
  font-size: 14.5px;
  transition:
    background 0.35s var(--ease-soft),
    color 0.35s var(--ease-soft);
}
.btn-map:hover,
.btn-map:focus-visible {
  background: var(--c-gold);
  color: var(--c-warm-white);
}

/* ---- بخش گالری ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: clamp(28px, 6vw, 44px);
}
.gallery-item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--c-cream);
  border: 1px solid var(--c-paper-dark);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-soft);
}
.gallery-item:hover img {
  transform: scale(1.06);
}
.gallery-item button {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  padding: 0;
}
.gallery-item.img-fallback img {
  display: none;
}
.gallery-item.img-fallback::after {
  content: "تصویر";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gold);
  font-size: 13px;
  background: linear-gradient(160deg, var(--c-cream), var(--c-paper-dark));
}

/* ---- جعبه‌نور گالری (لایت‌باکس) ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(20, 15, 10, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease;
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox-figure {
  max-width: 92vw;
  max-height: 78vh;
  text-align: center;
}
.lightbox-figure img {
  max-width: 92vw;
  max-height: 78vh;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.lightbox-controls {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  pointer-events: none;
}
.lightbox-controls button {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--c-paper);
  padding: 10px 16px;
  font-size: 13.5px;
  border-radius: 2px;
}
.lightbox-close {
  position: absolute;
  top: 16px;
  left: 16px;
  pointer-events: auto;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--c-paper);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 18px;
  line-height: 1;
}

/* ---- فوتر ---- */
.footer {
  text-align: center;
  padding: clamp(40px, 8vw, 64px) 0 calc(clamp(40px, 8vw, 64px) + 70px);
  color: var(--c-charcoal-soft);
  font-size: 13.5px;
}
.footer-names {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--c-gold-deep);
  margin-bottom: 10px;
}

/* ---- کنترل موسیقی ---- */
.music-toggle {
  position: fixed;
  bottom: 20px;
  left: 20px;
  z-index: 60;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--c-warm-white);
  border: 1px solid var(--c-gold-light);
  box-shadow: 0 6px 18px -8px var(--c-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    background 0.3s ease;
}
.music-toggle.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.music-toggle svg {
  width: 18px;
  height: 18px;
  fill: var(--c-gold-deep);
}
.music-toggle[aria-pressed="false"] .icon-on {
  display: none;
}
.music-toggle[aria-pressed="true"] .icon-off {
  display: none;
}

/* =========================================================
   ۴. واکنش‌گرا: تبلت و دسکتاپ
   ========================================================= */
@media (min-width: 640px) {
  .details-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  :root {
    --content-w: 720px;
  }
}

@media (min-width: 1024px) {
  :root {
    --content-w: 820px;
  }
  .hero-message {
    max-width: 560px;
  }
}

/* =========================================================
   ۵. کاهش حرکت برای کاربرانی که آن را ترجیح می‌دهند
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.2s !important;
  }
  .particle {
    display: none;
  }
}