:root{
  --pink: #ffd6e0;
  --rose: #ffb3c6;
  --white: #ffffff;
  --glass: rgba(255,255,255,0.18);
  --glass-2: rgba(255,255,255,0.07);
  --accent: #ff6b9a;
  --soft-shadow: 0 8px 30px rgba(255,98,140,0.12);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Poppins,system-ui,Arial;background:linear-gradient(180deg,#fff0f4 0%, #fff 100%);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;}
#scene{position:relative;overflow:hidden;min-height:100vh;display:flex;align-items:center;justify-content:center;width:100%;}
#bgVideo{position:fixed;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;filter:contrast(1.02) saturate(1.02) brightness(0.97);will-change:transform;} 
.overlay{position:fixed;inset:0;background:linear-gradient(180deg,rgba(255,240,245,0.25),rgba(255,245,250,0.45));mix-blend-mode:soft-light;z-index:1}
.ui{position:relative;z-index:3;max-width:980px;width:100%;margin:0;padding:16px;display:flex;flex-direction:column;align-items:center;gap:14px;}
.welcome h1{font-family:'Dancing Script',cursive;color:#ff4571;font-size:clamp(28px,8vw,48px);margin:0;text-shadow:0 4px 12px rgba(255,90,130,0.12);}
.welcome .sub{color:#8b5161;margin-top:6px;font-weight:300;font-size:clamp(14px,3.5vw,16px);}
.card{display:grid;grid-template-columns:1fr;gap:12px;width:100%;}
.glass{background:linear-gradient(135deg,rgba(255,255,255,0.24),rgba(255,255,255,0.12));backdrop-filter:blur(6px) saturate(110%);border-radius:12px;padding:14px;box-shadow:var(--soft-shadow);border:1px solid rgba(255,255,255,0.2);}
.video-wrap{border-radius:10px;overflow:hidden;margin-top:10px;border:1px solid rgba(255,255,255,0.18);width:100%;}
#mainVid{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;display:block;max-height:60vh;}
.message p{margin:8px 0 0;color:#5b3942;font-size:clamp(14px,3.5vw,15px);}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center;}
.pill{font-family:Poppins,system-ui;padding:12px 20px;border-radius:999px;border:none;background:linear-gradient(90deg,var(--accent),#ff8fb0);color:white;cursor:pointer;box-shadow:0 4px 12px rgba(255,100,140,0.14);transition:transform 0.12s ease,box-shadow 0.12s ease;font-size:clamp(13px,3vw,15px);font-weight:500;touch-action:manipulation;}
.pill:active{transform:scale(0.96);}
.pill:hover{box-shadow:0 8px 20px rgba(255,90,130,0.12);}
@media (hover: hover) { .pill:hover{transform:translateY(-2px);} }
.pill.ghost{background:transparent;color:#7a3a4a;border:2px solid rgba(255,255,255,0.3);box-shadow:none;}
.pill.on{background:linear-gradient(90deg,#ff5f8d,#ff86ab);}
.heart{margin-right:6px;font-size:clamp(14px,4vw,18px);}
.audio-hint{margin:0;text-align:center;color:#8b5161;font-size:clamp(11px,2.8vw,13px);opacity:.9;}
.footer{color:#8b5161;opacity:.9;font-size:clamp(12px,2.5vw,13px);}
#particles, #petals{position:fixed;inset:0;pointer-events:none;z-index:2;will-change:transform;}

/* Hearts animation - lightweight for mobile */
.floating-heart{position:absolute;font-size:clamp(14px,3vw,18px);color:var(--accent);filter:drop-shadow(0 4px 12px rgba(255,90,140,0.1));transform-origin:center;will-change:transform,opacity;}

/* Petals - reduced complexity for mobile */
.petal{position:absolute;width:clamp(10px,2.5vw,16px);height:clamp(10px,2.5vw,16px);background:radial-gradient(circle at 40% 30%,#ffd2db 0%,#ff9fb5 60%);border-radius:60% 40% 60% 40%;opacity:.9;will-change:transform;filter:drop-shadow(0 3px 10px rgba(255,90,140,0.08));}

@keyframes petalFall{0%{transform:translateY(-10vh) rotate(0deg) translateX(0)}100%{transform:translateY(110vh) rotate(360deg) translateX(30vw);opacity:0}}

@keyframes floatUp{0%{transform:translateY(4px)}50%{transform:translateY(-4px)}100%{transform:translateY(4px)}}

.welcome h1,.glass,h2,h3{animation:fadeIn 700ms ease forwards;opacity:0}
@keyframes fadeIn{to{opacity:1}}

/* responsive: mobile-first approach */
@media (min-width:640px){.ui{padding:18px;}.welcome h1{font-size:clamp(30px,6vw,44px);}}
@media (min-width:760px){.card{grid-template-columns:1fr 320px}.video-section{grid-column:1/2}.message{grid-column:2/3}.glass{padding:16px;}}
@media (min-width:1024px){.ui{margin:40px;}}

@media (max-width:520px){
  .glass{backdrop-filter:blur(4px) saturate(105%);}
  #bgVideo{filter:contrast(1) saturate(1) brightness(0.98);}
  .gallery-track{gap:8px;padding:4px;}
  .photo{flex:0 0 78vw;}
  .photo img{aspect-ratio:4/5;}
  .love-note{max-width:70vw;}
}

/* Gallery styles - mobile optimized */
.gallery{width:100%;padding:14px;border-radius:12px;display:flex;flex-direction:column;gap:10px;}
.gallery h2{font-family:'Dancing Script',cursive;color:#ff467a;margin:0;font-size:clamp(22px,5vw,28px);}
.gallery-wrap{background:linear-gradient(180deg,rgba(255,255,255,0.06),rgba(255,255,255,0.03));padding:8px;border-radius:10px;overflow:hidden;}
.gallery-track{display:flex;gap:10px;overflow-x:auto;overflow-y:hidden;padding:6px;scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:rgba(255,120,150,0.18) transparent;}
.gallery-track::-webkit-scrollbar{height:6px;}
.gallery-track::-webkit-scrollbar-thumb{background:rgba(255,120,150,0.18);border-radius:999px;}
.photo{position:relative;flex:0 0 clamp(140px,60vw,300px);border-radius:12px;overflow:hidden;scroll-snap-align:start;border:2px solid rgba(255,182,200,0.2);box-shadow:0 6px 18px rgba(255,90,140,0.06);transition:transform 0.25s ease,box-shadow 0.25s ease;will-change:transform;}
.photo img{display:block;width:100%;height:100%;aspect-ratio:1;object-fit:cover;}
@media (hover: hover) { .photo:hover{transform:scale(1.03);box-shadow:0 12px 32px rgba(255,90,140,0.12);} .photo:hover img{transform:scale(1.02);} }
.photo:active{transform:scale(0.98);}
.photo-heart{position:absolute;right:8px;bottom:8px;background:linear-gradient(90deg,#ff8fb0,#ff6b9a);color:white;padding:4px 6px;border-radius:999px;font-size:clamp(11px,2vw,13px);opacity:0;transform:scale(0.8);transition:opacity 0.2s,transform 0.2s;}
@media (hover: hover) { .photo:hover .photo-heart{opacity:1;transform:scale(1);} }
.photo:active .photo-heart{opacity:1;transform:scale(1);}
.gallery-hint{color:#7a3a4a;font-size:clamp(11px,2.5vw,13px);text-align:center;}

@media (min-width:640px){.photo{flex:0 0 clamp(160px,50vw,280px);}}
@media (min-width:1000px){.photo{flex:0 0 280px;}}

/* Love notes styling - mobile optimized */
#loveNotes{position:fixed;inset:0;pointer-events:none;z-index:4;}
.love-note{position:absolute;pointer-events:none;font-family:'Dancing Script',cursive;font-size:clamp(14px,3vw,18px);color:#ff467a;padding:6px 10px;border-radius:10px;background:linear-gradient(180deg,rgba(255,255,255,0.08),rgba(255,245,250,0.06));box-shadow:0 4px 16px rgba(255,90,140,0.08);border:1px solid rgba(255,255,255,0.2);text-shadow:0 2px 10px rgba(255,90,140,0.06);opacity:0;transform:translateY(6px) scale(.95);transition:opacity 0.4s ease,transform 0.5s cubic-bezier(0.2,0.9,0.2,1);display:flex;align-items:center;gap:6px;will-change:transform,opacity;}
.love-note.visible{opacity:1;transform:translateY(0) scale(1)}
.love-note .note-heart{background:linear-gradient(90deg,#ff9fb5,#ff6b9a);color:white;padding:3px 5px;border-radius:999px;font-size:clamp(11px,2.5vw,13px);}
@keyframes noteFloat{0%{transform:translateY(0)}50%{transform:translateY(-6px)}100%{transform:translateY(0)}}
.love-note.floating{animation:noteFloat 3.5s ease-in-out infinite;}
.fade-in-on-scroll{opacity:0;transform:translateY(6px);transition:opacity 0.5s ease,transform 0.5s ease;}
.fade-in-on-scroll.revealed{opacity:1;transform:translateY(0);}