/* =========================================================
   FOR ISRAA — A cinematic romantic reveal
   Design tokens, base styles, scenes, components
   ========================================================= */

:root{
  /* ---- Color tokens ---- */
  --c-midnight: #120C24;
  --c-plum:     #2B1745;
  --c-rose:     #FF5FA2;
  --c-blush:    #FFD1E8;
  --c-white:    #FFFFFF;

  --c-rose-soft: rgba(255, 95, 162, 0.35);
  --c-blush-soft: rgba(255, 209, 232, 0.18);
  --c-glass-bg: rgba(255, 255, 255, 0.06);
  --c-glass-border: rgba(255, 255, 255, 0.16);

  /* ---- Type tokens ---- */
  --f-script: 'Great Vibes', cursive;
  --f-display: 'Playfair Display', serif;
  --f-body: 'Poppins', sans-serif;

  /* ---- Motion ---- */
  --ease-cinematic: cubic-bezier(.16,.84,.44,1);
  --ease-soft: cubic-bezier(.22,.61,.36,1);

  color-scheme: dark;
}

/* ---------------------------------------------------------
   Reset & base
--------------------------------------------------------- */
*, *::before, *::after{ box-sizing: border-box; }

html{
  background: var(--c-midnight);
  scrollbar-width: thin;
  scrollbar-color: var(--c-rose-soft) transparent;
}

body{
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(160deg, var(--c-midnight) 0%, var(--c-plum) 55%, #1a0f30 100%);
  color: var(--c-white);
  font-family: var(--f-body);
  font-weight: 300;
  overflow-x: hidden;
  cursor: default;
  -webkit-font-smoothing: antialiased;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

h1,h2,h3{ font-family: var(--f-display); font-weight: 600; margin: 0; }
p{ margin: 0; }

a, button{ font-family: inherit; }

/* ---------------------------------------------------------
   Background atmosphere: canvases, aurora, grain, cursor glow
--------------------------------------------------------- */
#starfield, #particles, #confetti-canvas{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}
#confetti-canvas{ z-index: 60; }

#aurora{
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.65;
}
.aurora-blob{
  position: absolute;
  border-radius: 50%;
  mix-blend-mode: screen;
  will-change: transform;
}
.blob-1{
  width: 55vw; height: 55vw;
  top: -15%; left: -10%;
  background: radial-gradient(circle, var(--c-rose) 0%, transparent 70%);
  animation: driftA 26s ease-in-out infinite alternate;
}
.blob-2{
  width: 50vw; height: 50vw;
  bottom: -20%; right: -10%;
  background: radial-gradient(circle, var(--c-plum) 0%, transparent 70%);
  animation: driftB 32s ease-in-out infinite alternate;
}
.blob-3{
  width: 40vw; height: 40vw;
  top: 30%; left: 35%;
  background: radial-gradient(circle, var(--c-blush) 0%, transparent 75%);
  opacity: 0.5;
  animation: driftC 22s ease-in-out infinite alternate;
}
@keyframes driftA{ 0%{ transform: translate(0,0) scale(1);} 100%{ transform: translate(8vw,10vh) scale(1.15);} }
@keyframes driftB{ 0%{ transform: translate(0,0) scale(1);} 100%{ transform: translate(-6vw,-8vh) scale(1.1);} }
@keyframes driftC{ 0%{ transform: translate(-4vw,0) scale(1);} 100%{ transform: translate(4vw,6vh) scale(1.2);} }

#grain{
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

#cursor-glow{
  position: fixed;
  top: 0; left: 0;
  width: 420px; height: 420px;
  margin-left: -210px; margin-top: -210px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--c-rose-soft) 0%, transparent 70%);
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity .4s var(--ease-soft);
  will-change: transform;
}
@media (hover: hover){
  #cursor-glow.active{ opacity: 1; }
}

/* ---------------------------------------------------------
   Layout scaffolding
--------------------------------------------------------- */
#story{ position: relative; z-index: 5; }

.scene{
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8vh 6vw;
  overflow: hidden;
}

.scene-inner{
  position: relative;
  z-index: 4;
  width: 100%;
  max-width: 780px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.6rem;
}

/* ---------------------------------------------------------
   Scene progress dots
--------------------------------------------------------- */
#scene-progress{
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
#scene-progress .dot{
  width: 7px; height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  transition: all .5s var(--ease-soft);
}
#scene-progress .dot.active{
  background: var(--c-rose);
  box-shadow: 0 0 10px 2px var(--c-rose-soft);
  transform: scale(1.4);
}
@media (max-width: 720px){ #scene-progress{ right: 14px; } }

/* ---------------------------------------------------------
   Glass buttons & magnetic interaction
--------------------------------------------------------- */
.glass-btn{
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  color: var(--c-white);
  cursor: pointer;
}

.glow-btn{
  position: relative;
  padding: 1.05rem 2.6rem;
  border-radius: 100px;
  border: 1px solid rgba(255,209,232,0.4);
  background: linear-gradient(135deg, rgba(255,95,162,0.25), rgba(43,23,69,0.55));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--c-white);
  font-family: var(--f-body);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  font-weight: 400;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 8px 32px -8px var(--c-rose-soft);
  transition: transform .45s var(--ease-cinematic), box-shadow .45s var(--ease-cinematic), border-color .45s var(--ease-cinematic);
}
.glow-btn:hover{
  box-shadow: 0 12px 44px -6px rgba(255,95,162,0.55);
  border-color: var(--c-blush);
}
.glow-btn .btn-shine{
  position: absolute;
  inset: -2px;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.5) 50%, transparent 70%);
  transform: translateX(-120%);
  z-index: -1;
}
.glow-btn:hover .btn-shine{ animation: shine 1.1s var(--ease-soft); }
@keyframes shine{ to{ transform: translateX(120%); } }

.ghost-btn{
  padding: 1rem 2.2rem;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.28);
  background: transparent;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all .4s var(--ease-soft);
}
.ghost-btn:hover{ border-color: var(--c-blush); color: var(--c-white); background: rgba(255,255,255,0.06); }

.btn-label{ position: relative; z-index: 1; }

/* Ripple click effect */
.ripple{
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.55);
  transform: scale(0);
  animation: rippleAnim .7s var(--ease-soft) forwards;
  pointer-events: none;
}
@keyframes rippleAnim{
  to{ transform: scale(1); opacity: 0; }
}

/* ---------------------------------------------------------
   Music toggle
--------------------------------------------------------- */
.music-btn{
  position: fixed;
  top: 28px;
  right: 28px;
  z-index: 50;
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .4s var(--ease-soft), transform .3s var(--ease-soft);
}
.music-btn:hover{ transform: scale(1.08); border-color: var(--c-blush); }
.music-btn .icon-note{ width: 20px; height: 20px; color: var(--c-blush); transition: opacity .3s; }
.music-btn .music-bars{ position: absolute; display: none; gap: 3px; align-items: flex-end; height: 16px; }
.music-btn[data-playing="true"] .icon-note{ opacity: 0; }
.music-btn[data-playing="true"] .music-bars{ display: flex; }
.music-btn .music-bars i{
  width: 3px; background: var(--c-rose); border-radius: 2px;
  animation: bar 0.9s ease-in-out infinite;
}
.music-btn .music-bars i:nth-child(1){ height: 6px; animation-delay: 0s; }
.music-btn .music-bars i:nth-child(2){ height: 14px; animation-delay: .2s; }
.music-btn .music-bars i:nth-child(3){ height: 9px; animation-delay: .4s; }
@keyframes bar{ 0%,100%{ transform: scaleY(0.4); } 50%{ transform: scaleY(1); } }

@media (max-width: 720px){
  .music-btn{ top: 16px; right: 16px; width: 44px; height: 44px; }
}

/* =========================================================
   SCENE 1 — INTRO
   ========================================================= */
.scene-intro{
  background: radial-gradient(ellipse at 50% 30%, rgba(43,23,69,0.6) 0%, var(--c-midnight) 70%);
}
.intro-stars{
  position: absolute; inset: 0; z-index: 0;
}
.type-line{
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  font-weight: 400;
  color: var(--c-white);
  min-height: 1.4em;
  letter-spacing: 0.01em;
}
.type-line .caret{
  display: inline-block;
  width: 2px;
  margin-left: 2px;
  background: var(--c-rose);
  animation: blink 0.9s step-end infinite;
}
@keyframes blink{ 50%{ opacity: 0; } }

#start-btn{ margin-top: 2.6rem; opacity: 0; transform: translateY(18px); }

.scroll-cue{
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
}
.scroll-cue span{
  display: block;
  width: 22px; height: 36px;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 14px;
  position: relative;
}
.scroll-cue span::before{
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  width: 4px; height: 4px;
  margin-left: -2px;
  background: var(--c-blush);
  border-radius: 50%;
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot{ 0%{ transform: translateY(0); opacity: 1; } 70%{ opacity: 0; } 100%{ transform: translateY(14px); opacity: 0; } }

/* =========================================================
   SCENE 2 — ROSE
   ========================================================= */
.scene-rose{ background: radial-gradient(ellipse at 50% 20%, rgba(255,95,162,0.08), transparent 60%); }

.rose-wrap{ position: relative; width: min(70vw, 380px); aspect-ratio: 1; margin: 0 auto; }
#rose-svg{ width: 100%; height: 100%; overflow: visible; }

.rose-path{
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
}
.rose-stem, .rose-leaf{ stroke-dasharray: 300; stroke-dashoffset: 300; }

.falling-petals{
  position: absolute;
  inset: -20% -40% -40%;
  pointer-events: none;
  overflow: visible;
}
.petal-fall{
  position: absolute;
  top: -5%;
  width: 14px; height: 14px;
  background: linear-gradient(135deg, var(--c-blush), var(--c-rose));
  border-radius: 60% 0 60% 0;
  opacity: 0.85;
  filter: drop-shadow(0 0 6px var(--c-rose-soft));
  will-change: transform;
}

.rose-text{ margin-top: 1rem; }
.reveal-line{
  font-family: var(--f-display);
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  line-height: 1.7;
  color: var(--c-blush);
  opacity: 0;
  transform: translateY(16px);
  margin-bottom: 0.4rem;
}

/* =========================================================
   SCENE 3 — HEART
   ========================================================= */
.scene-heart{ background: radial-gradient(ellipse at 50% 40%, rgba(255,95,162,0.1), transparent 65%); }

.heart-wrap{ width: min(50vw, 260px); margin: 0 auto; }
#heart-svg{ width: 100%; height: 100%; transform-origin: center; overflow: visible; }

.heart-caption{
  margin-top: 2rem;
  font-family: var(--f-script);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--c-blush);
  opacity: 0;
}

.floating-heart{
  position: fixed;
  z-index: 4;
  pointer-events: none;
  color: var(--c-rose);
  will-change: transform, opacity;
}

/* =========================================================
   SCENE 4 — LETTER
   ========================================================= */
.scene-letter{ background: radial-gradient(ellipse at 50% 50%, rgba(43,23,69,0.5), var(--c-midnight) 75%); }

.envelope{
  position: relative;
  width: min(80vw, 340px);
  height: min(58vw, 230px);
  margin: 0 auto 1rem;
  perspective: 1400px;
}
.envelope-back, .envelope-front{
  position: absolute;
  inset: 0;
  border-radius: 10px;
  background: linear-gradient(155deg, #3a2158, #241238);
  border: 1px solid var(--c-glass-border);
}
.envelope-back{ z-index: 1; }
.envelope-front{
  z-index: 3;
  clip-path: polygon(0 100%, 50% 42%, 100% 100%);
  background: linear-gradient(155deg, #452866, #2b1745);
}
.envelope-flap{
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60%;
  background: linear-gradient(155deg, #4d2c72, #2b1745);
  clip-path: polygon(0 0, 100% 0, 50% 92%);
  transform-origin: top center;
  z-index: 4;
  border-radius: 10px 10px 0 0;
  transition: transform 1s var(--ease-cinematic);
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.envelope.open .envelope-flap{ transform: rotateX(180deg); z-index: 1; }

.wax-seal{
  position: absolute;
  top: 46%; left: 50%;
  width: 44px; height: 44px;
  margin: -22px 0 0 -22px;
  z-index: 5;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.4));
  transition: opacity .4s ease, transform .4s ease;
}
.envelope.open .wax-seal{ opacity: 0; transform: scale(0.6) rotate(25deg); }

.letter-paper{
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 6%;
  padding: 1.6rem 1.4rem;
  border-radius: 6px;
  background: linear-gradient(180deg, #fdf7fb, #fbeef5);
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
  z-index: 2;
  transform: translateY(6%) scale(0.96);
  opacity: 0.9;
  transition: transform 1.1s var(--ease-cinematic);
}
.envelope.open .letter-paper{
  transform: translateY(-92%) scale(1.06);
  z-index: 6;
}
.letter-line{
  font-family: var(--f-display);
  color: var(--c-plum);
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  line-height: 1.9;
  text-align: left;
  opacity: 0;
  transform: translateY(8px);
}
.letter-emph{
  font-family: var(--f-script);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  color: var(--c-rose);
  margin-top: 0.3rem;
}

#open-letter-btn{ margin-top: 1.5rem; }
#open-letter-btn.is-hidden{ opacity: 0; pointer-events: none; }

/* =========================================================
   SCENE 5 — FINALE
   ========================================================= */
.scene-finale{
  background: radial-gradient(ellipse at 50% 30%, rgba(255,95,162,0.12), var(--c-midnight) 70%);
  min-height: 100vh;
}
#constellation-svg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.constellation-line{
  fill: none;
  stroke: rgba(255,209,232,0.5);
  stroke-width: 1;
  stroke-dasharray: 6;
  stroke-dashoffset: 6;
}
.constellation-star{ fill: var(--c-blush); }

.finale-petals{ position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 1; }

.finale-pre{
  font-family: var(--f-body);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: rgba(255,209,232,0.7);
  opacity: 0;
}
.finale-message{
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  background: linear-gradient(135deg, var(--c-white), var(--c-blush));
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--c-white);
  -webkit-text-fill-color: transparent;
  opacity: 0;
}
.finale-sign{
  font-family: var(--f-script);
  font-size: clamp(2rem, 5vw, 2.8rem);
  color: var(--c-rose);
  opacity: 0;
}
.rose-emoji{ display: inline-block; }

.finale-actions{
  margin-top: 2.4rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0;
}

/* Confetti canvas full screen */
#confetti-canvas{ position: fixed; inset: 0; }

/* ---------------------------------------------------------
   Responsive tuning
--------------------------------------------------------- */
@media (max-width: 640px){
  .scene{ padding: 6vh 6vw; }
  .scene-inner{ gap: 1.2rem; }
  .glow-btn, .ghost-btn{ padding: 0.9rem 1.9rem; font-size: 0.85rem; }
  .rose-wrap{ width: 78vw; }
  #cursor-glow{ display: none; }
}

@media (max-width: 400px){
  .type-line{ font-size: 1.3rem; }
}