:root {
  --rise: -1200px;
  --pink: #ff4fa3;
  --magenta: #ff2bd6;
  --purple: #a64dff;
  --violet: #7c3aed;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #030004;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

body {
  background:
    radial-gradient(ellipse 80% 55% at 50% 50%, rgba(160, 30, 190, .22), transparent 70%),
    radial-gradient(ellipse 60% 40% at 50% 110%, rgba(255, 40, 160, .18), transparent 70%),
    radial-gradient(ellipse 60% 40% at 50% -10%, rgba(100, 40, 220, .16), transparent 70%),
    #030004;
}

.defs { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- sparkles canvas ---------- */
#sparkles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* ---------- hearts ---------- */
#hearts {
  position: fixed;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}

.heart {
  position: absolute;
  bottom: 0;
  left: var(--x);
  width: var(--s);
  height: var(--s);
  margin-left: calc(var(--s) / -2);
  opacity: 0;
  will-change: transform, opacity;
  animation: rise var(--dur) linear var(--delay) 1 both;
}

.heart .sway, .heart .spin, .heart svg {
  display: block;
  width: 100%;
  height: 100%;
}
.heart svg { overflow: visible; }

.heart .sway { animation: sway var(--swd) ease-in-out var(--delay) infinite alternate; }
.heart .spin.rot   { animation: spin var(--spd) ease-in-out var(--delay) infinite alternate; }
.heart .spin.pulse { animation: pulse var(--pud) ease-in-out var(--delay) infinite alternate; }

@keyframes rise {
  0%   { transform: translate3d(0, 130px, 0); opacity: 0; }
  8%   { opacity: var(--o); }
  82%  { opacity: var(--o); }
  100% { transform: translate3d(0, var(--rise), 0); opacity: 0; }
}
@keyframes sway {
  from { transform: translate3d(calc(var(--sw) * -1), 0, 0); }
  to   { transform: translate3d(var(--sw), 0, 0); }
}
@keyframes spin {
  from { transform: rotate(-24deg); }
  to   { transform: rotate(24deg); }
}
@keyframes pulse {
  from { transform: scale(.88); opacity: .72; }
  to   { transform: scale(1.12); opacity: 1; }
}

/* ---------- centre text ---------- */
.stage {
  position: fixed;
  inset: 0;
  z-index: 3;
  display: grid;
  place-items: center;
  padding: 4vmin;
  pointer-events: none;
}

.love {
  position: relative;
  margin: 0;
  max-width: 100%;
  direction: rtl;
  unicode-bidi: isolate;
  text-align: center;
  font-family: "Lalezar", "Vazirmatn", "Vazir", "IRANSans", "Noto Naskh Arabic", "Segoe UI", Tahoma, sans-serif;
  font-weight: 400;
  font-size: clamp(3rem, 13vw, 10rem);
  line-height: 1.5;
  letter-spacing: 0;           /* never letter-space Persian: it breaks letter joining */
  word-spacing: .05em;
  color: #fff4fb;
  -webkit-text-stroke: .5px rgba(255, 190, 235, .6);
  text-shadow:
    0 0 .04em #fff,
    0 0 .1em #ffd0f0,
    0 0 .22em var(--pink),
    0 0 .45em var(--magenta),
    0 0 .9em var(--purple),
    0 0 1.6em rgba(124, 58, 237, .8);
  animation:
    enter 2.6s cubic-bezier(.2, .8, .2, 1) both,
    breathe 4.5s ease-in-out 2.6s infinite;
  will-change: transform, opacity;
}

/* glossy highlight sweeping the top half of the letters */
.love::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  text-shadow: none;
  -webkit-text-stroke: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,0) 46%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  opacity: .6;
}

/* luminous floor reflection */
.love::after {
  content: attr(data-text);
  position: absolute;
  left: 0; right: 0;
  top: 100%;
  margin-top: -.5em;
  text-shadow: 0 0 .25em var(--magenta), 0 0 .7em var(--purple);
  -webkit-text-stroke: 0;
  color: rgba(255, 130, 220, .55);
  transform: scaleY(-1);
  transform-origin: top center;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.45), transparent 55%);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.45), transparent 55%);
  filter: blur(1.5px);
  opacity: .8;
}

@keyframes enter {
  0%   { opacity: 0; transform: scale(.82) translateY(26px); filter: blur(18px); }
  60%  { opacity: 1; filter: blur(2px); }
  100% { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}
@keyframes breathe {
  0%, 100% {
    transform: scale(1);
    text-shadow:
      0 0 .04em #fff, 0 0 .1em #ffd0f0, 0 0 .22em var(--pink),
      0 0 .45em var(--magenta), 0 0 .9em var(--purple), 0 0 1.6em rgba(124,58,237,.8);
  }
  50% {
    transform: scale(1.035);
    text-shadow:
      0 0 .05em #fff, 0 0 .14em #ffe0f5, 0 0 .3em var(--pink),
      0 0 .6em var(--magenta), 0 0 1.2em var(--purple), 0 0 2.1em rgba(124,58,237,.95);
  }
}

/* ---------- accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  .love { animation: none; }
  .heart, .heart .sway, .heart .spin { animation: none !important; }
  .heart { opacity: var(--o); }
}