:root{
  --fg:#f6f6fb;
  --muted:rgba(246,246,251,.72);
  --soft:rgba(246,246,251,.92);
  --card:rgba(255,255,255,.08);
  --border:rgba(255,255,255,.16);
  --border2:rgba(255,255,255,.26);
}

*{box-sizing:border-box;}
html,body{height:100%;}

body{
  margin:0;
  color:var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow:hidden;

  /* More life: romantic animated gradient */
  background: radial-gradient(1200px 900px at 20% 10%, rgba(255, 160, 210, .25), transparent 55%),
              radial-gradient(900px 700px at 85% 30%, rgba(150, 210, 255, .20), transparent 55%),
              radial-gradient(900px 700px at 40% 90%, rgba(170, 140, 255, .18), transparent 60%),
              #07060c;
}

/* subtle motion */
body::after{
  content:"";
  position:fixed;
  inset:-30%;
  pointer-events:none;
  background:
    radial-gradient(700px 450px at 25% 35%, rgba(255,255,255,.06), transparent 60%),
    radial-gradient(900px 520px at 75% 70%, rgba(255,255,255,.05), transparent 66%);
  animation: drift 16s ease-in-out infinite alternate;
  z-index:0;
}

@keyframes drift{
  from{ transform: translate3d(-1%, -1%, 0) scale(1.02); }
  to  { transform: translate3d( 1%,  1%, 0) scale(1.05); }
}

.stage{
  height:100%;
  display:grid;
  place-items:center;
  padding:28px;
  position:relative;
  z-index:1;
}

.screen{
  width:min(940px, 92vw);
  min-height:520px;
  padding:34px 28px;
  border:1px solid var(--border);
  background: rgba(0,0,0,.18);
  border-radius:20px;
  box-shadow:0 35px 110px rgba(0,0,0,.55);
  display:none;
  position:relative;
  backdrop-filter: blur(14px);
}

.screen.active{
  display:block;
  animation:fadeIn 520ms ease both;
}

@keyframes fadeIn{
  from{opacity:0; transform:translateY(10px);}
  to{opacity:1; transform:translateY(0);}
}

/* Universal center wrapper (screens 2–4 feel alive + centered) */
.center{
  height:100%;
  min-height:452px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:18px;
  text-align:center;
}

.footer{
  position:absolute;
  bottom:14px;
  left:0;
  right:0;
  text-align:center;
  font-size:12px;
  color:rgba(246,246,251,.65);
  letter-spacing:.08em;
  text-transform:uppercase;
}

/* Screen 1: Terminal */
.terminal{
  width:min(720px, 86vw);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size:15px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--soft);
  white-space:pre-wrap;
  padding:18px 16px;
  border-radius:16px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.30);
  min-height:265px;
  box-shadow: 0 18px 60px rgba(0,0,0,.35);
}

/* Buttons */
.btn{
  padding:14px 22px; /* iPad friendly */
  border-radius:14px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.10);
  color:var(--fg);
  font-size:15px;
  cursor:pointer;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.btn:hover{
  transform:translateY(-1px);
  background: rgba(255,255,255,.14);
  border-color: var(--border2);
}

.btn:active{ transform:translateY(0); }
.hidden{ display:none; }
.center-btn{ margin-top: 10px; }

/* Screen 2: Add life */
.card{
  width:min(720px, 86vw);
  padding:22px 20px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.10);
  box-shadow:
    0 20px 70px rgba(0,0,0,.35),
    0 0 40px rgba(255,255,255,.06);
}

.line{
  opacity:0;
  transform:translateY(10px);
  margin:0 0 14px 0;
  font-size:24px;
  line-height:1.35;
  color:var(--soft);
  transition: opacity 650ms ease, transform 650ms ease;
}

/* Screen 3 */
.question{
  margin:0;
  font-size:46px;
  letter-spacing:-.02em;
}

.centered-row{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}

.hint{
  font-size:14px;
  color:var(--muted);
}

/* Screen 4 */
.final{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
}

.big{
  margin:0;
  font-size:26px;
  color:var(--soft);
}

/* Heart reveal (bigger + softer) */
.heart-wrap{
  margin-top:18px;
  opacity:0;
  transform:translateY(14px) scale(.98);
  transition: opacity 900ms ease, transform 900ms ease;
}

.heart-svg{
  width:420px;           /* bigger */
  height:auto;
  filter:
    drop-shadow(0 30px 90px rgba(0,0,0,.70))
    drop-shadow(0 0 28px rgba(255,255,255,.12));
}

/* Soft sparkle burst */
.sparkle{
  position:fixed;
  width:6px;
  height:6px;
  border-radius:50%;
  background: rgba(255,255,255,0.92);
  pointer-events:none;
  opacity:0;
  animation: sparklePop 900ms ease-out forwards;
  z-index:9999;
}

@keyframes sparklePop{
  0%{ transform: translateY(0) scale(.6); opacity:0; }
  20%{ opacity:.95; }
  100%{ transform: translateY(-60px) scale(0); opacity:0; }
}