/* ==========================================================================
   Adel'in 6. Ay Kınası - Özel Editorial Davetiye Stilleri (Vanilla CSS)
   Sıfır Derleyici (Zero-Build), Saf ve Yüksek Performanslı CSS
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Alex+Brush&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --adel-bg: #FAF7F2;
  --adel-cream: #F5EFEB;
  --adel-rose-soft: #FBF0EF;
  --adel-blush: #F3DCDD;
  --adel-rose-gold: #D89E9E;
  --adel-gold: #C8A265;
  --adel-gold-light: #EAD7AE;
  --adel-gold-dark: #8F6F33;
  --adel-gold-text: #C8A265;
  --adel-dark: #2B1D17;
  --adel-muted: #7A6E6E;
  --adel-border: rgba(200, 162, 101, 0.22);
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-script: 'Alex Brush', cursive;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* 3D Davetiye Zarfı Renkleri (Açık Tema) */
  --envelope-surface-start: #FAF6F0;
  --envelope-surface-mid: #F0E6D8;
  --envelope-surface-end: #E2D3C0;
  --envelope-surface-tip: #D5C2AA;
  --envelope-surface-highlight: #FFFDF9;
  --envelope-flap-edge: #D9C7AF;
  --envelope-card-bg: #FFFFFF;
  --envelope-card-border: rgba(200, 162, 101, 0.45);
}

/* --------------------------------------------------------------------------
   Temel Sıfırlamalar & Tipografi
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  background-color: var(--adel-bg);
  color: var(--adel-dark);
  font-family: var(--font-sans);
  font-variant-numeric: lining-nums;
  overflow-x: hidden;
  touch-action: pan-y;
  min-height: 100vh;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(200, 162, 101, 0.2);
  color: var(--adel-dark);
}

/* --------------------------------------------------------------------------
   Dokunsal Lüks Arka Plan (Atelier Kağıdı)
   -------------------------------------------------------------------------- */
.atelier-paper-bg {
  background-color: #FAF7F2;
  background-image: 
    radial-gradient(rgba(200, 162, 101, 0.09) 1px, transparent 1px),
    radial-gradient(rgba(243, 220, 221, 0.3) 1px, #FAF7F2 1px);
  background-size: 32px 32px;
  background-position: 0 0, 16px 16px;
}

/* --------------------------------------------------------------------------
   Zarif Altın Varak & Çizgi Efektleri
   -------------------------------------------------------------------------- */
.gold-foil-text {
  background: linear-gradient(135deg, #A88344 0%, #E8D39E 30%, #C8A265 70%, #8F6F33 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hairline-gold {
  height: 1px;
  width: 100%;
  margin: 1.5rem 0;
}

.hairline-gold,
.countdown-container::before {
  background: linear-gradient(90deg, transparent 0%, rgba(200, 162, 101, 0.4) 50%, transparent 100%);
}

/* --------------------------------------------------------------------------
   Canvas Parçacıkları (Altın Tozu & Gül Yaprağı)
   -------------------------------------------------------------------------- */
#sparkles-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Taşıyıcı & Düzen (Layout)
   -------------------------------------------------------------------------- */
.invitation-main {
  position: relative;
  z-index: 10;
  max-width: 440px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 1rem 1.5rem 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-block {
  width: 100%;
  text-align: center;
}

/* --------------------------------------------------------------------------
   1. BÖLÜM: Kemerli Video Portalı & Hero
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 0.25rem;
  padding-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-home {
  width: 100%;
  flex: 0 0 auto;
}

.arch-portal {
  width: 16rem;
  aspect-ratio: 9 / 16;
  margin: 1.25rem 0;
  border-radius: 9999px 9999px 24px 24px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(184, 142, 110, 0.28), 0 0 0 1px rgba(200, 162, 101, 0.35);
  position: relative;
}

@media (min-width: 400px) {
  .arch-portal {
    width: 18rem;
  }
}

.arch-portal-glow {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(200, 162, 101, 0.4);
  border-radius: inherit;
  pointer-events: none;
  z-index: 10;
}

.arch-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.eyebrow-text {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--adel-gold-text);
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
}

.hero-names-wrapper {
  margin-top: 1rem;
}

.hero-title {
  display: flex;
  align-items: baseline;
  justify-content: center;
  padding: 0.25rem 0;
  user-select: none;
}

.font-script {
  font-family: var(--font-script);
}

.font-serif {
  font-family: var(--font-serif);
}

.font-sans {
  font-family: var(--font-sans);
}

.title-adel {
  font-family: var(--font-script);
  font-size: 4.75rem;
  font-weight: 400;
  color: var(--adel-dark);
  line-height: 1;
}

@media (min-width: 400px) {
  .title-adel {
    font-size: 5.5rem;
  }
}

.title-suffix {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--adel-dark);
  margin-left: 0.25rem;
  line-height: 1;
  letter-spacing: -0.02em;
}

@media (min-width: 400px) {
  .title-suffix {
    font-size: 2.25rem;
  }
}

.event-subtitle {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--adel-dark);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}

.parents-wrapper {
  padding-top: 1rem;
}

.parents-names {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--adel-gold);
  font-weight: 600;
}

.parents-divider {
  width: 2.5rem;
  height: 1px;
  background-color: rgba(200, 162, 101, 0.4);
  margin: 0.5rem auto 0 auto;
}

/* --------------------------------------------------------------------------
   2. BÖLÜM: Davet Metni (Editorial Quote)
   -------------------------------------------------------------------------- */
.invitation-section {
  padding: 3rem 0;
}

.invitation-quote {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.65;
  color: var(--adel-dark);
  padding: 0 0.5rem;
}

@media (min-width: 400px) {
  .invitation-quote {
    font-size: 1.45rem;
  }
}

.signature-wrapper {
  margin-top: 1.5rem;
}

.signature-text {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--adel-gold);
  font-weight: 500;
  font-style: italic;
}

/* --------------------------------------------------------------------------
   3. BÖLÜM: Tarih & Sayaç
   -------------------------------------------------------------------------- */
.date-section {
  padding: 2.5rem 0;
}

.event-date-large {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
  color: var(--adel-dark);
  letter-spacing: 0.05em;
  margin: 0.25rem 0;
}

@media (min-width: 400px) {
  .event-date-large {
    font-size: 2.25rem;
  }
}

.event-day-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--adel-gold);
  margin-bottom: 0.25rem;
}

.event-time-text {
  font-size: 0.8rem;
  color: rgba(43, 29, 23, 0.75);
  font-weight: 500;
}

.event-time-val {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--adel-dark);
}

.countdown-heading {
  flex: 0 0 100%;
  margin: 0 0 0.15rem;
  color: var(--adel-gold);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-style: italic;
  letter-spacing: 0.04em;
}

/* Geri Sayım Kutusu */
.countdown-container {
  position: relative;
  margin-top: 0.75rem;
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-family: var(--font-serif);
  font-variant-numeric: tabular-nums;
}

.countdown-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
}

@media (min-width: 400px) {
  .countdown-container {
    gap: 1.5rem;
  }
}

.countdown-unit {
  text-align: center;
  min-width: 3.2rem;
}

.cd-num {
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--adel-dark);
  display: block;
}

@media (min-width: 400px) {
  .cd-num {
    font-size: 1.9rem;
  }
}

.cd-label {
  display: block;
  font-size: 8.5px;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--adel-gold);
  font-family: var(--font-sans);
  margin-top: 0.15rem;
}

.cd-sep {
  color: rgba(200, 162, 101, 0.35);
  font-size: 1.15rem;
  font-weight: 300;
}

/* --------------------------------------------------------------------------
   4. BÖLÜM: Mekan & Aksiyon Butonları
   -------------------------------------------------------------------------- */
.location-section {
  padding: 2.5rem 0;
}

.venue-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--adel-dark);
  margin-top: 0.25rem;
  line-height: 1.35;
}

@media (min-width: 400px) {
  .venue-title {
    font-size: 1.75rem;
  }
}

.venue-address {
  font-size: 0.82rem;
  color: rgba(43, 29, 23, 0.75);
  font-weight: 300;
  margin: 0.5rem auto 0 auto;
  max-width: 18rem;
  line-height: 1.5;
}

.action-buttons-group {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  justify-content: center;
  max-width: 27rem;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 380px) {
  .action-buttons-group {
    flex-direction: row;
  }
}

.btn-editorial {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(200, 162, 101, 0.4);
  color: #2E2727;
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex: 1;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 14px -3px rgba(200, 162, 101, 0.12);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.btn-editorial:hover {
  background: #FFFFFF;
  border-color: var(--adel-gold);
  color: #1F1919;
  box-shadow: 0 8px 22px -4px rgba(200, 162, 101, 0.24);
  transform: translateY(-1px);
}

.btn-editorial:active {
  transform: translateY(0) scale(0.97);
}

.btn-editorial svg {
  width: 14px;
  height: 14px;
  color: var(--adel-gold);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Alt Bilgi (Footer)
   -------------------------------------------------------------------------- */
.invitation-footer {
  width: 100%;
  text-align: center;
  padding-top: 2.5rem;
  padding-bottom: 2rem;
  font-size: 0.75rem;
  color: rgba(43, 29, 23, 0.5);
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.footer-line {
  width: 1.5rem;
  height: 1px;
  background-color: rgba(200, 162, 101, 0.3);
}

.footer-brand-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.875rem;
  color: var(--adel-gold);
}

.footer-family-text {
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: rgba(43, 29, 23, 0.55);
}

/* --------------------------------------------------------------------------
   Sabit Denetimler: Müzik & Kaydırma İndikatörü
   -------------------------------------------------------------------------- */
.music-control-wrap {
  position: fixed;
  bottom: 1.5rem;
  left: 1.25rem;
  z-index: 50;
  user-select: none;
}

@media (min-width: 640px) {
  .music-control-wrap {
    left: 1.5rem;
  }
}

.music-toggle-btn {
  background: none;
  border: none;
  padding: 0.4rem;
  color: var(--adel-gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
  transition: all 0.3s ease;
}

.music-toggle-btn:hover {
  color: var(--adel-gold-dark);
  opacity: 1;
}

.music-toggle-btn:active {
  transform: scale(0.9);
}

.music-toggle-btn svg {
  width: 1.15rem;
  height: 1.15rem;
}

.pulse-anim {
  animation: pulse-slow 2.5s ease-in-out infinite;
}

@keyframes pulse-slow {
  0%, 100% {
    opacity: 0.75;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

/* Sağ Alttaki Zarif Kaydırma Oku */
.scroll-indicator-wrap {
  position: fixed;
  bottom: 1.5rem;
  right: 1.25rem;
  z-index: 40;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  user-select: none;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

@media (min-width: 640px) {
  .scroll-indicator-wrap {
    right: 1.5rem;
  }
}

.scroll-indicator-text {
  font-size: 9px;
  text-transform: lowercase;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: var(--adel-gold);
}

.scroll-indicator-svg {
  width: 14px;
  height: 14px;
  color: var(--adel-gold);
  animation: arrow-bounce 2s infinite;
}

@keyframes arrow-bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(5px);
  }
  60% {
    transform: translateY(2.5px);
  }
}

.hide-indicator {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* --------------------------------------------------------------------------
   Takvim Ekleme Modalı
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: rgba(25, 7, 17, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 100%;
  max-width: 23rem;
  max-height: calc(100dvh - 2rem);
  background: linear-gradient(150deg, rgba(160, 110, 133, 0.46), rgba(80, 34, 54, 0.68) 48%, rgba(69, 27, 46, 0.78));
  border: 1px solid rgba(255, 239, 225, 0.36);
  border-radius: 1.65rem;
  padding: 2rem;
  box-shadow: 0 30px 75px rgba(16, 3, 11, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.32), inset 0 -1px 0 rgba(255, 255, 255, 0.06);
  text-align: left;
  position: relative;
  overflow-y: auto;
  backdrop-filter: blur(32px) saturate(145%);
  -webkit-backdrop-filter: blur(32px) saturate(145%);
  transform: translateY(12px) scale(0.97);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-card::before {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: radial-gradient(ellipse at 18% 0, rgba(255, 239, 225, 0.19), transparent 58%);
  pointer-events: none;
}

.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 251, 249, 0.82);
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}

.modal-close-btn svg {
  width: 14px;
  height: 14px;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.025em;
  color: #FFFBF9;
  padding-right: 2.5rem;
}

.modal-details-box {
  margin: 1.4rem 0 1.35rem;
  padding: 1.1rem 0;
  border-top: 1px solid rgba(252, 224, 171, 0.35);
  border-bottom: 1px solid rgba(252, 224, 171, 0.35);
  text-align: left;
  font-size: 0.78rem;
  color: rgba(255, 251, 249, 0.86);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.modal-details-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.45;
  color: #FFFBF9;
}

.modal-details-parents {
  font-size: 0.74rem;
  line-height: 1.5;
  color: rgba(255, 251, 249, 0.72);
}

.modal-details-time {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--adel-gold-light);
  font-weight: 500;
}

.modal-details-location {
  font-size: 0.74rem;
  line-height: 1.5;
  color: rgba(255, 251, 249, 0.72);
}

.modal-buttons-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.modal-buttons-group .btn-editorial {
  width: 100%;
  min-height: 3.1rem;
  justify-content: flex-start;
  padding: 0.75rem 1rem;
  border-radius: 0.85rem;
  font-size: 0.79rem;
  letter-spacing: 0.015em;
  gap: 0.8rem;
}

/* ==========================================================================
   Yumuşak Koyu Tema (Soft Twilight Dark Theme)
   Kapkaranlık olmayan, sıcak mürdüm/mocha kadife zemin ve ışıltılı altın tonlar.
   ========================================================================== */
body.theme-dark {
  --adel-bg: #3D1627;
  --adel-cream: #4F2233;
  --adel-rose-soft: #5C2B3E;
  --adel-blush: #7C4F62;
  --adel-rose-gold: #F7D0DC;
  --adel-gold: #FCE0AB;
  --adel-gold-light: #FFF0D6;
  --adel-gold-dark: #EDC785;
  --adel-gold-text: #FCE0AB;
  --adel-dark: #FFFBF9;
  --adel-muted: #F2D8E2;
  --adel-border: rgba(252, 224, 171, 0.4);
  background-color: var(--adel-bg);
  color: var(--adel-dark);
}

body.theme-dark::selection {
  background: rgba(252, 224, 171, 0.4);
  color: #5C2B3E;
}

body.theme-dark.atelier-paper-bg {
  background-color: #3D1627;
  background-image: 
    radial-gradient(rgba(252, 224, 171, 0.1) 1px, transparent 1px),
    radial-gradient(rgba(247, 208, 220, 0.08) 1px, #3D1627 1px);
  background-size: 32px 32px;
  background-position: 0 0, 16px 16px;
  background-attachment: fixed, fixed;
}

body.theme-dark .hairline-gold,
body.theme-dark .countdown-container::before {
  background: linear-gradient(90deg, transparent 0%, rgba(252, 224, 171, 0.55) 50%, transparent 100%);
}

body.theme-dark .title-adel,
body.theme-dark .title-suffix,
body.theme-dark .event-subtitle,
body.theme-dark .invitation-quote,
body.theme-dark .event-date-large,
body.theme-dark .event-time-val,
body.theme-dark .cd-num,
body.theme-dark .venue-title,
body.theme-dark .modal-title {
  color: #FFFBF9;
}

body.theme-dark .event-time-text,
body.theme-dark .venue-address {
  color: rgba(255, 251, 249, 0.85);
}

body.theme-dark .invitation-footer {
  color: rgba(255, 251, 249, 0.6);
}

body.theme-dark .footer-family-text {
  color: rgba(255, 251, 249, 0.7);
}

body.theme-dark .countdown-container {
  border-top-color: rgba(252, 224, 171, 0.35);
}

body.theme-dark .cd-sep {
  color: rgba(252, 224, 171, 0.5);
}

body.theme-dark .arch-portal {
  box-shadow: 0 25px 50px -12px rgba(60, 25, 40, 0.35), 0 0 0 1px rgba(252, 224, 171, 0.5);
}

body.theme-dark #sparkles-canvas {
  opacity: 0.85;
}

body.theme-dark .btn-editorial {
  background: rgba(140, 92, 113, 0.75);
  border-color: rgba(252, 224, 171, 0.45);
  color: #FFFBF9;
  box-shadow: 0 4px 14px -3px rgba(70, 30, 48, 0.25);
}

body.theme-dark .btn-editorial:hover {
  background: rgba(158, 108, 130, 0.95);
  border-color: var(--adel-gold);
  color: #FFFFFF;
  box-shadow: 0 8px 22px -4px rgba(252, 224, 171, 0.35);
}

body.theme-dark .modal-card {
  border-color: rgba(255, 239, 225, 0.36);
}

body.theme-dark .modal-close-btn {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: rgba(255, 251, 249, 0.82);
}

body.theme-dark .modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}

body.theme-dark .modal-details-box {
  background: transparent;
  border-color: rgba(252, 224, 171, 0.35);
}

body.theme-dark .modal-details-title {
  color: #FFFBF9;
}

body.theme-dark .modal-details-parents {
  color: rgba(255, 251, 249, 0.72);
}

body.theme-dark .modal-details-location {
  color: rgba(255, 251, 249, 0.72);
}

body.theme-dark .modal-buttons-group .btn-editorial {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFBF9;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}

body.theme-dark .modal-buttons-group .btn-editorial:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 239, 225, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
  transform: translateY(-1px);
}

.modal-buttons-group .btn-editorial svg {
  width: 18px;
  height: 18px;
  color: var(--adel-gold-light);
}

.modal-close-btn:focus-visible,
.modal-buttons-group .btn-editorial:focus-visible {
  outline: 2px solid var(--adel-gold-light);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Tema Değiştirici Buton Stilleri
   -------------------------------------------------------------------------- */
.theme-toggle-wrap {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 50;
  user-select: none;
}

.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(200, 162, 101, 0.35);
  border-radius: 9999px;
  width: 2.2rem;
  height: 2.2rem;
  padding: 0;
  color: var(--adel-gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

body.theme-dark .theme-toggle-btn {
  background: rgba(140, 92, 113, 0.85);
  border-color: rgba(252, 224, 171, 0.45);
  color: var(--adel-gold);
  box-shadow: 0 2px 10px rgba(70, 30, 48, 0.25);
}

.theme-toggle-btn:hover {
  transform: scale(1.08);
  border-color: var(--adel-gold);
}

.theme-toggle-btn svg {
  width: 1.1rem;
  height: 1.1rem;
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   3D GERÇEKÇİ DAVETİYE ZARFI AÇILIŞ KATMANI STİLLERİ (BURGUNDY & GOLD)
   ========================================================================== */

/* Zarf Açılmadan Önce Sayfa Kaydırmasını Kilitleme ve Alt Katmanı %100 Gizleme */
body.envelope-locked {
  overflow: hidden !important;
  touch-action: none !important;
  height: 100vh !important;
}

/* İlk çizimden itibaren ana içerik gizlidir; hero yuvası ölçülebilir kalır.
   Hero karta taşındığında bu seçicinin dışında kalır ve zarf içinde görünür. */
body.envelope-locked .invitation-main > *,
body.envelope-locked .theme-toggle-wrap,
body.envelope-locked .music-control-wrap,
body.envelope-locked .scroll-indicator-wrap {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* Sayfa açılışında elemanların yumuşak belirişi */
.invitation-main,
.invitation-main > :not(.hero-home),
.theme-toggle-wrap,
.music-control-wrap,
.scroll-indicator-wrap,
#sparkles-canvas {
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.8s ease;
}

/* Zarf Overlay Konteyneri: arka planı ortak body/canvas sahnesinden alır. */
.envelope-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  pointer-events: auto;
  user-select: none;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.7s ease;
}

.envelope-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* 3D Sahne & Perspektif Konteyneri (Fotoğraftaki 1:1.5 Oran: 340x510) */
.envelope-3d-stage {
  position: relative;
  z-index: 2;
  width: 340px;
  max-width: 86vw;
  height: 510px;
  max-height: 80vh;
  perspective: 1200px;
  perspective-origin: 50% 45%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Sabit zarf kapsayıcısı; iç katmanların 3D derinliği korunur. */
.envelope-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

/* Zarf Ana Gövdesi (Lüks Mat Bordo Karton & Gerçekçi Stüdyo Gölgeleri) */
.envelope-body {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  background:
    radial-gradient(circle at 28% 14%, rgba(132, 72, 96, 0.34), transparent 38%),
    radial-gradient(circle at 78% 74%, rgba(22, 3, 12, 0.44), transparent 52%),
    linear-gradient(155deg, #54243A 0%, #3C1527 55%, #280A18 100%);
  transform-style: preserve-3d;
  box-shadow: 
    0 40px 90px -15px rgba(12, 2, 8, 0.85),
    0 15px 40px -8px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(226, 187, 119, 0.45);
  overflow: visible;
}

/* Zarf Arka İç Astarı (Lining) */
.envelope-liner {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  overflow: hidden;
  background-color: #451C30;
  background-image:
    url('./assets/burgundy-velvet-texture.webp'),
    radial-gradient(ellipse at 26% 20%, #6D3E51 0%, #5C2F43 26%, #471E32 58%, #301020 100%);
  background-size: cover;
  background-position: center;
  background-blend-mode: soft-light, normal;
  z-index: 1;
  transform: translate3d(0, 0, 0px);
}

.liner-pattern {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.liner-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Zarf Arka Üst Altın Çerçeve (Kartın Arkasında: z-index: 1, z: 0.5px) */
.envelope-back-border-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  transform: translate3d(0, 0, 0.5px);
  overflow: visible;
}

/* İçerideki Davetiye Kartı (Zarf Açılana Kadar Kesinlikle Görünmez) */
.envelope-card {
  position: absolute;
  top: 20px;
  left: 5%;
  width: 90%;
  height: 450px;
  border-radius: 8px;
  background: #3D1627;
  border: 1px solid rgba(226, 187, 119, 0.5);
  box-shadow: 0 16px 40px rgba(10, 2, 7, 0.45);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0;
  transform: translate3d(0, 0, 2px);
  will-change: transform, opacity;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Kartın içindeki içerik, ana sayfanın gerçek hero DOM'udur. */
.envelope-card .hero-section {
  position: absolute;
  top: 16px;
  left: 50%;
  margin: 0;
  transform-origin: top center;
  will-change: transform;
}

.envelope-card.is-shared-transition {
  z-index: 10001;
  overflow: hidden;
  pointer-events: none;
  will-change: top, left, width, height, border-radius, background, box-shadow;
}

/* Ön cep dokusu ve vektör detayları ayrı kompozit katmanlarda tutulur. */
.envelope-pocket-texture-svg,
.envelope-pocket-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}

.envelope-pocket-texture-svg {
  z-index: 4;
  transform: translate3d(0, 0, 3px);
}

.envelope-pocket-svg {
  z-index: 5;
  transform: translate3d(0, 0, 4px);
}

/* Gerçek kadife PNG dokusu, lif kontrastını korumak için doğrudan alfa ile karıştırılır. */
.envelope-velvet-texture {
  opacity: 0.42;
  mix-blend-mode: normal;
  pointer-events: none;
}

/* Vektör altın hatlarda sıcak gölge ve soğuk üst yansıma, kabartma etkisini güçlendirir. */
.gold-emboss-line,
.flap-gold-rim,
.envelope-ribbons,
.envelope-author-divider,
.flap-flourish {
  filter:
    drop-shadow(0 1.15px 0 rgba(53, 24, 3, 0.9))
    drop-shadow(0 -0.55px 0 rgba(255, 239, 190, 0.65))
    drop-shadow(0 1.8px 1.1px rgba(9, 1, 5, 0.42));
}

.flap-gold-rim {
  stroke-width: 2.05;
}

.flap-gold-rim-highlight {
  opacity: 0.72;
  stroke-width: 0.55;
}

.envelope-author-text {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.36em;
  fill: #DFB770;
  user-select: none;
}

/* 3D Üst Kapak (Flap) */
.envelope-flap-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 43.1372549%; /* 220 / 510: kapak mobilde gövdeyle aynı oranda ölçeklenir. */
  z-index: 25;
  transform-origin: top center;
  transform-style: preserve-3d;
  transform: translate3d(0, 0, 8px);
  will-change: transform;
  cursor: pointer;
  overflow: visible;
}

.flap-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  display: block;
}

/* Balmumu Mühür (Wax Seal) */
.wax-seal {
  position: absolute;
  top: 97.7272727%; /* 215 / 220: mühür her boyutta kapak ucunda kalır. */
  left: 50%;
  transform: translate(-50%, -50%) translate3d(0, 0, 6px);
  width: 66px;
  height: 66px;
  cursor: pointer;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 6px 14px rgba(10, 2, 7, 0.65));
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  -webkit-tap-highlight-color: transparent;
}

.wax-seal:hover {
  transform: translate(-50%, -50%) translate3d(0, 0, 6px) scale(1.08);
}

.wax-seal:active {
  transform: translate(-50%, -50%) translate3d(0, 0, 6px) scale(0.96);
}

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

/* Mühür açılırken yayılan törensel altın ışık ve mikro toz */
.seal-release-effect {
  position: absolute;
  width: 1px;
  height: 1px;
  z-index: 10002;
  pointer-events: none;
  animation: sealReleaseLifetime 0.92s both;
}

.seal-release-ring,
.seal-release-glow,
.seal-release-particle {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.seal-release-ring {
  width: 62px;
  height: 62px;
  margin: -31px 0 0 -31px;
  border: 1.5px solid rgba(255, 226, 158, 0.95);
  border-radius: 50%;
  box-shadow:
    0 0 12px rgba(255, 221, 139, 0.9),
    inset 0 0 10px rgba(226, 187, 119, 0.55);
  animation: sealReleaseRing 0.78s cubic-bezier(0.18, 0.75, 0.25, 1) both;
}

.seal-release-glow {
  width: 150px;
  height: 150px;
  margin: -75px 0 0 -75px;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(255, 244, 207, 0.78) 0%,
    rgba(226, 187, 119, 0.34) 34%,
    rgba(184, 139, 70, 0) 72%);
  filter: blur(5px);
  animation: sealReleaseGlow 0.88s ease-out both;
}

.seal-release-particle {
  width: var(--dust-size);
  height: var(--dust-size);
  margin: calc(var(--dust-size) / -2) 0 0 calc(var(--dust-size) / -2);
  border-radius: 50%;
  background: var(--dust-color);
  box-shadow:
    0 0 5px 1px var(--dust-color),
    0 0 11px rgba(226, 187, 119, 0.3);
  filter: blur(0.25px);
  animation: sealReleaseDust 1.12s cubic-bezier(0.22, 0.48, 0.28, 1) both;
}

@keyframes sealReleaseRing {
  0% { transform: scale(0.52); opacity: 0; }
  18% { opacity: 1; }
  100% { transform: scale(2.35); opacity: 0; }
}

@keyframes sealReleaseGlow {
  0% { transform: scale(0.35); opacity: 0; }
  24% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.85); opacity: 0; }
}

@keyframes sealReleaseDust {
  0% { transform: translate(0, 0) scale(0.25); opacity: 0; }
  12% { opacity: var(--dust-opacity); }
  28% {
    transform: translate(var(--dust-burst-x), var(--dust-burst-y)) scale(1);
    opacity: var(--dust-opacity);
  }
  68% { opacity: 0.52; }
  80%, 100% {
    transform: translate(var(--dust-burst-x), var(--dust-burst-y)) scale(0.12);
    filter: blur(3px);
    opacity: 0;
  }
}

@keyframes sealReleaseLifetime {
  from { opacity: 1; }
  to { opacity: 0.999; }
}

/* Yol tarifi ve takvim düğmeleri için kompakt altın/rose-gold varyasyon */
.button-dust-effect {
  position: fixed;
  z-index: 1;
  animation-duration: 1.35s;
}

body.theme-dark .action-buttons-group .btn-editorial {
  position: relative;
  z-index: 2;
  min-width: 0;
  padding: 0.85rem 0.7rem;
  gap: 0.55rem;
  background: rgba(154, 91, 111, 0.38);
  border: 1px solid rgba(234, 215, 174, 0.42);
  border-radius: 0.85rem;
  box-shadow: none;
  color: #FFF8F2;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.015em;
  white-space: nowrap;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

body.theme-dark .action-buttons-group .btn-editorial:hover {
  background: rgba(174, 105, 126, 0.56);
  border-color: rgba(234, 215, 174, 0.78);
  color: #FFF8F2;
  box-shadow: none;
  transform: translateY(-2px);
}

body.theme-dark .action-buttons-group .btn-editorial:active {
  background: rgba(174, 105, 126, 0.68);
  transform: translateY(0);
}

.action-buttons-group .btn-editorial:focus-visible {
  outline: 2px solid var(--adel-gold-light);
  outline-offset: 4px;
}

.action-buttons-group .btn-editorial svg {
  width: 16px;
  height: 16px;
  color: var(--adel-gold-light);
}

.button-dust-effect .seal-release-particle {
  filter: none;
  box-shadow:
    0 0 7px 1.8px var(--dust-color),
    0 0 14px rgba(226, 187, 119, 0.52);
  animation-name: buttonReleaseDust;
  animation-duration: 1.25s;
}

@keyframes buttonReleaseDust {
  0% { transform: translate(0, 0) scale(0.25); opacity: 0; }
  12% { opacity: var(--dust-opacity); }
  28% {
    transform: translate(var(--dust-burst-x), var(--dust-burst-y)) scale(1);
    opacity: var(--dust-opacity);
  }
  68% { opacity: 0.52; }
  100% {
    transform: translate(var(--dust-burst-x), var(--dust-burst-y)) scale(0.12);
    filter: blur(3px);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .seal-release-effect {
    display: none;
  }
}

/* Zarfın altındaki sade editoryal not; açılışta mevcut GSAP akışıyla kaybolur. */
.envelope-cta-badge {
  position: absolute;
  top: calc(100% + 24px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 90vw;
  color: #F4DDB5;
  text-shadow: 0 1px 2px rgba(20, 5, 11, 0.55), 0 0 10px rgba(226, 187, 119, 0.3);
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 3.8vw, 1.08rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.025em;
  text-align: center;
  pointer-events: none;
}

/* Koyu Tema Değişken Eşleşmeleri */
body.theme-dark {
  --envelope-surface-start: #633B4F;
  --envelope-surface-mid: #522E40;
  --envelope-surface-end: #3D1F2E;
  --envelope-surface-tip: #341926;
  --envelope-surface-highlight: #75475F;
  --envelope-flap-edge: #432233;
  --envelope-card-bg: #4F2B3E;
  --envelope-card-border: rgba(252, 224, 171, 0.4);
}