:root{
  --bg1:#4b0012;
  --bg2:#b3002d;
  --card:#fff7f9;
  --ink:#2a0a12;
  --muted:#6b2b3a;
  --accent:#ff2f6d;
  --accent2:#ff5a8b;
  --shadow: 0 18px 60px rgba(0,0,0,.35);
  --radius: 24px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink);
  background: radial-gradient(1200px 900px at 20% 10%, rgba(255,255,255,.10), transparent 60%),
              radial-gradient(900px 700px at 80% 20%, rgba(255,255,255,.08), transparent 55%),
              linear-gradient(135deg, var(--bg1), var(--bg2));
  overflow-x:hidden;
}

.bg-hearts{
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.22;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,.22) 0 2px, transparent 3px),
    radial-gradient(circle at 70% 20%, rgba(255,255,255,.18) 0 2px, transparent 3px),
    radial-gradient(circle at 35% 70%, rgba(255,255,255,.14) 0 2px, transparent 3px),
    radial-gradient(circle at 85% 70%, rgba(255,255,255,.12) 0 2px, transparent 3px);
  filter: blur(.2px);
}

/* Floating + pop hearts layer */
.hearts{
  position:fixed;
  inset:0;
  pointer-events:none;
  overflow:hidden;
}
.heart{
  position:absolute;
  left: var(--x, 50%);
  top: var(--y, 90%);
  font-size: var(--s, 18px);
  opacity:0;
  transform: translate(-50%, -50%) scale(.85);
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.18));
  will-change: transform, opacity;
}
.heart.float{ animation: floatUp var(--t, 6.5s) ease-in forwards; }
.heart.pop{ animation: popUp .85s ease-out forwards; }

@keyframes floatUp{
  0%{ opacity:0; transform: translate(-50%, 0) scale(.75); }
  10%{ opacity: .65; }
  100%{ opacity:0; transform: translate(calc(-50% + var(--dx, 0px)), calc(-1 * var(--rise, 420px))) scale(1.25); }
}

@keyframes popUp{
  0%{ opacity:0; transform: translate(-50%, -50%) scale(.35); }
  25%{ opacity:.9; transform: translate(-50%, -70%) scale(1.15); }
  100%{ opacity:0; transform: translate(calc(-50% + var(--dx, 0px)), calc(-50% - var(--rise, 140px))) scale(.95); }
}

.wrap{
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding: max(20px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
  gap:14px;
}

.top{ text-align:center; color: rgba(255,255,255,.92); }
.badge{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(10px);
  font-weight:650;
  letter-spacing:.2px;
}
.sub{ margin-top:8px; font-size:14px; opacity:.9; }

.card{
  width:min(520px, 94vw);
  background: linear-gradient(180deg, rgba(255,255,255,1), rgba(255,247,249,1));
  border:1px solid rgba(255,255,255,.35);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px 16px;
}

.title{ margin: 6px 0 8px; font-size: 26px; line-height:1.12; }
.hint{ margin:0 0 14px; color: var(--muted); }

.row{ display:flex; gap:10px; }
.input{
  flex:1;
  border-radius: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(0,0,0,.10);
  font-size: 16px;
  outline:none;
}
.input:focus{ border-color: rgba(255,47,109,.6); box-shadow: 0 0 0 3px rgba(255,47,109,.12); }

.btn{
  border:0;
  border-radius: 14px;
  padding: 12px 14px;
  font-weight:650;
  font-size: 15px;
  color:white;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 10px 26px rgba(255,47,109,.25);
}
.btn:active{ transform: translateY(1px); }

.btn.ghost{
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(255,47,109,.35);
  box-shadow:none;
}

.error{ color:#b1002c; margin: 10px 2px 0; font-weight:600; }

.content{ text-align:left; }
.day{
  display:inline-block;
  font-weight:700;
  font-size: 13px;
  letter-spacing: .6px;
  color: rgba(255,47,109,.95);
  background: rgba(255,47,109,.08);
  border:1px solid rgba(255,47,109,.18);
  padding: 6px 10px;
  border-radius: 999px;
}

/* Preview browse (hidden unless ?preview=1) */
.browse{ margin-top: 12px; padding: 10px 12px; border-radius: 16px; background: rgba(255,47,109,.06); border: 1px solid rgba(255,47,109,.14); }
.browseRow{ display:flex; gap:8px; align-items:center; margin-top: 8px; }
.browseLabel{ font-size: 12px; font-weight: 750; color: rgba(42,10,18,.70); letter-spacing:.2px; }
.select{
  flex:1;
  border-radius: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(0,0,0,.10);
  font-size: 15px;
  background: white;
}
.browseHint{ margin-top: 8px; color: rgba(42,10,18,.55); font-size: 12px; }
.browseHint code{ background: rgba(0,0,0,.05); padding: 2px 6px; border-radius: 8px; }

.message{
  margin: 10px 0 14px;
  font-size: 18px;
  line-height: 1.6;
  color: rgba(42,10,18,.95);
  white-space: pre-wrap;
}
.sig{ color: rgba(42,10,18,.75); font-weight:650; margin-top: 6px; }
.meta{ margin-top:12px; color: rgba(42,10,18,.55); font-size: 12px; }
.actions{ display:flex; gap:10px; margin-top: 14px; }
.footer{ color: rgba(255,255,255,.75); font-size: 12px; }
.tiny{ opacity:.9; }

/* Motion: fade + slide in sequence */
.anim{ opacity:0; transform: translateY(6px); }
.anim.in{ animation: fadeUp .55s ease forwards; }
.anim.in.d2{ animation-delay: .10s; }
.anim.in.d3{ animation-delay: .18s; }
@keyframes fadeUp{
  from{ opacity:0; transform: translateY(8px); filter: blur(.3px); }
  to{ opacity:1; transform: translateY(0); filter: blur(0); }
}

@media (prefers-reduced-motion: reduce){
  .anim{ opacity:1; transform:none; }
  .anim.in{ animation:none; }
}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto}
}