*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#050208;
  --gold:#ffd700;
  --gold-soft:#ffe9a0;
  --red:#e6392e;
  --white:#fffaf0;
  --card:rgba(22,10,14,0.94);
  --border:rgba(255,200,80,0.32);
  --safe-bottom:env(safe-area-inset-bottom,0px);
  --safe-top:env(safe-area-inset-top,0px);
}
html,body{
  height:100%;width:100%;overflow:hidden;
  background:var(--bg);color:var(--white);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  -webkit-tap-highlight-color:transparent;touch-action:manipulation;
}
body{position:relative;}
body.shake{animation:screen-shake 0.22s ease-out;}
@keyframes screen-shake{
  0%,100%{transform:translate(0,0);}
  20%{transform:translate(-3px,2px);}
  40%{transform:translate(3px,-2px);}
  60%{transform:translate(-2px,-1px);}
  80%{transform:translate(2px,1px);}
}

.sky{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 90% 55% at 50% -5%,#1a0a28 0%,transparent 55%),
    radial-gradient(ellipse 70% 40% at 15% 30%,rgba(40,12,48,0.45) 0%,transparent 50%),
    radial-gradient(ellipse 60% 35% at 85% 25%,rgba(28,10,40,0.4) 0%,transparent 50%),
    linear-gradient(180deg,#060210 0%,#0a0612 35%,#120810 62%,#1a0c0c 82%,#2a100c 100%);
}
.sky::before{
  content:"";position:absolute;inset:0;opacity:0.5;
  background-image:
    radial-gradient(1px 1px at 8% 12%,rgba(255,255,255,0.7),transparent),
    radial-gradient(1px 1px at 22% 28%,rgba(255,240,200,0.55),transparent),
    radial-gradient(1.5px 1.5px at 35% 8%,rgba(255,255,255,0.8),transparent),
    radial-gradient(1px 1px at 48% 22%,rgba(255,220,160,0.45),transparent),
    radial-gradient(1px 1px at 62% 15%,rgba(255,255,255,0.65),transparent),
    radial-gradient(1.5px 1.5px at 75% 30%,rgba(255,240,200,0.5),transparent),
    radial-gradient(1px 1px at 88% 10%,rgba(255,255,255,0.75),transparent),
    radial-gradient(1px 1px at 12% 45%,rgba(255,255,255,0.4),transparent),
    radial-gradient(1px 1px at 55% 40%,rgba(255,230,180,0.35),transparent),
    radial-gradient(1px 1px at 92% 48%,rgba(255,255,255,0.45),transparent);
}

.scene-canvas{
  position:fixed;inset:0;z-index:2;width:100%;height:100%;
  display:block;pointer-events:none;touch-action:none;
}

.vignette{
  position:fixed;inset:0;z-index:5;pointer-events:none;
  background:
    radial-gradient(ellipse 75% 70% at 50% 45%,transparent 40%,rgba(0,0,0,0.45) 100%),
    linear-gradient(180deg,rgba(0,0,0,0.18) 0%,transparent 14%,transparent 72%,rgba(0,0,0,0.28) 100%);
}

.flash-bloom{
  position:fixed;inset:0;z-index:4;pointer-events:none;
  background:radial-gradient(
    ellipse 60% 50% at 50% 55%,
    rgba(255,240,180,0.55) 0%,
    rgba(255,120,40,0.18) 35%,
    transparent 70%
  );
  opacity:0;transition:opacity 0.08s ease-out;
}
.flash-bloom.active{opacity:1;transition:opacity 0.05s ease-out;}

.text-overlay{
  position:fixed;inset:0;z-index:10;
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;
  padding:max(1.25rem,var(--safe-top)) 1.25rem max(5rem,calc(4rem + var(--safe-bottom)));
}
.celebration-text{
  max-width:min(92vw,32rem);text-align:center;
  font-size:clamp(2rem,7.5vw,4rem);font-weight:800;
  line-height:1.3;letter-spacing:0.1em;color:#fff8e7;
  background:linear-gradient(180deg,#fffef5 0%,#ffe9a0 40%,#ffd700 70%,#ffb020 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:
    drop-shadow(0 0 6px rgba(255,215,0,0.95))
    drop-shadow(0 0 22px rgba(255,180,40,0.7))
    drop-shadow(0 0 48px rgba(230,57,46,0.45))
    drop-shadow(0 4px 8px rgba(0,0,0,0.85));
  opacity:0;transform:translateY(18px) scale(0.9);
  transition:opacity 1.1s cubic-bezier(0.22,1,0.36,1),transform 1.1s cubic-bezier(0.22,1,0.36,1);
  word-break:break-word;white-space:pre-wrap;
}
.celebration-text.visible{
  opacity:1;transform:translateY(0) scale(1);
  animation:text-pulse 3.2s ease-in-out 1.2s infinite;
}
@keyframes text-pulse{
  0%,100%{
    filter:drop-shadow(0 0 6px rgba(255,215,0,0.95)) drop-shadow(0 0 22px rgba(255,180,40,0.7)) drop-shadow(0 0 48px rgba(230,57,46,0.45)) drop-shadow(0 4px 8px rgba(0,0,0,0.85));
  }
  50%{
    filter:drop-shadow(0 0 10px rgba(255,230,120,1)) drop-shadow(0 0 32px rgba(255,200,60,0.85)) drop-shadow(0 0 64px rgba(230,57,46,0.55)) drop-shadow(0 4px 8px rgba(0,0,0,0.85));
  }
}

.btn-rewrite{
  position:fixed;z-index:20;left:50%;
  bottom:max(1.25rem,calc(1rem + var(--safe-bottom)));
  transform:translateX(-50%);
  min-height:44px;min-width:7.5rem;padding:0.65rem 1.35rem;
  border:1px solid var(--border);border-radius:999px;
  background:rgba(16,8,10,0.78);color:var(--gold-soft);
  font-size:0.95rem;font-weight:600;letter-spacing:0.08em;cursor:pointer;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:background 0.2s,border-color 0.2s,transform 0.15s,box-shadow 0.2s;
  pointer-events:auto;box-shadow:0 0 20px rgba(255,180,40,0.12);
}
.btn-rewrite:hover,.btn-rewrite:focus-visible{
  background:rgba(40,18,20,0.92);border-color:rgba(255,215,0,0.55);
  box-shadow:0 0 28px rgba(255,180,40,0.22);outline:none;
}
.btn-rewrite:active{transform:translateX(-50%) scale(0.97);}

.modal{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  padding:1.25rem;
  padding-top:max(1.25rem,var(--safe-top));
  padding-bottom:max(1.25rem,var(--safe-bottom));
  background:rgba(2,1,4,0.78);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:opacity 0.35s ease,visibility 0.35s;
}
.modal.hidden{opacity:0;visibility:hidden;pointer-events:none;}
.modal-card{
  position:relative;width:min(100%,22rem);
  padding:1.75rem 1.4rem 1.35rem;border-radius:1.15rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%,rgba(255,180,40,0.08) 0%,transparent 55%),
    var(--card);
  border:1px solid var(--border);
  box-shadow:
    0 0 0 1px rgba(255,215,0,0.08),
    0 24px 60px rgba(0,0,0,0.65),
    0 0 50px rgba(230,57,46,0.15);
  animation:card-in 0.45s cubic-bezier(0.22,1,0.36,1);
}
@keyframes card-in{
  from{opacity:0;transform:translateY(16px) scale(0.96);}
  to{opacity:1;transform:translateY(0) scale(1);}
}
.modal-ornament{
  text-align:center;color:var(--gold);font-size:0.85rem;
  letter-spacing:0.4em;margin-bottom:0.35rem;opacity:0.85;
  text-shadow:0 0 12px rgba(255,215,0,0.6);
}
.modal-title{
  font-size:clamp(1.3rem,4.5vw,1.55rem);font-weight:700;text-align:center;
  color:var(--gold);letter-spacing:0.14em;margin-bottom:0.45rem;
  text-shadow:0 0 20px rgba(255,215,0,0.35);
}
.modal-hint{
  text-align:center;font-size:0.85rem;color:rgba(255,250,240,0.55);margin-bottom:1.15rem;
}
.wish-input{
  display:block;width:100%;resize:none;padding:0.85rem 0.95rem;
  border-radius:0.7rem;border:1px solid rgba(255,200,80,0.25);
  background:rgba(6,3,6,0.7);color:var(--white);
  font-size:1.05rem;line-height:1.45;font-family:inherit;outline:none;
  transition:border-color 0.2s,box-shadow 0.2s;
}
.wish-input::placeholder{color:rgba(255,250,240,0.32);}
.wish-input:focus{
  border-color:rgba(255,215,0,0.6);
  box-shadow:0 0 0 3px rgba(255,215,0,0.14),0 0 24px rgba(255,180,40,0.1);
}
.char-count{
  text-align:right;font-size:0.75rem;color:rgba(255,250,240,0.4);
  margin-top:0.35rem;margin-bottom:1.1rem;
}
.modal-actions{display:flex;gap:0.65rem;}
.btn{
  flex:1;min-height:46px;border-radius:0.7rem;border:none;
  font-size:1rem;font-weight:650;letter-spacing:0.1em;cursor:pointer;
  font-family:inherit;
  transition:transform 0.12s,filter 0.15s,background 0.15s,box-shadow 0.15s;
}
.btn:active{transform:scale(0.97);}
.btn-ghost{
  background:rgba(255,255,255,0.06);color:rgba(255,250,240,0.7);
  border:1px solid rgba(255,255,255,0.1);
}
.btn-ghost:hover,.btn-ghost:focus-visible{background:rgba(255,255,255,0.1);outline:none;}
.btn-primary{
  background:linear-gradient(145deg,#f06a3a 0%,#d42828 45%,#9a1212 100%);
  color:#fff8f0;
  box-shadow:0 4px 20px rgba(196,30,30,0.5),0 0 24px rgba(255,100,40,0.2);
}
.btn-primary:hover,.btn-primary:focus-visible{
  filter:brightness(1.1);
  box-shadow:0 4px 24px rgba(196,30,30,0.6),0 0 32px rgba(255,100,40,0.3);
  outline:none;
}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

@media (max-width:767px){
  .vignette{
    background:
      radial-gradient(ellipse 80% 75% at 50% 40%,transparent 48%,rgba(0,0,0,0.32) 100%),
      linear-gradient(180deg,rgba(0,0,0,0.12) 0%,transparent 12%,transparent 70%,rgba(0,0,0,0.22) 100%);
  }
  .text-overlay{
    padding:max(1rem,var(--safe-top)) 1rem max(4.5rem,calc(3.2rem + var(--safe-bottom)));
  }
}
@media (min-width:768px){
  .modal-card{width:min(100%,26rem);padding:2rem 1.75rem 1.5rem;}
  .celebration-text{max-width:min(80vw,40rem);font-size:clamp(2.5rem,6vw,4.5rem);}
}
@media (prefers-reduced-motion:reduce){
  .celebration-text{transition-duration:0.01ms;animation:none !important;}
  .celebration-text.visible{animation:none;}
  .modal,.modal-card{transition:none;animation:none;}
  body.shake{animation:none;}
}