:root{
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.55);

  --card: rgba(255,255,255,0.08);
  --card2: rgba(255,255,255,0.12);
  --stroke: rgba(255,255,255,0.14);
  --stroke2: rgba(255,255,255,0.20);

  --field: rgba(10,12,18,0.55);
  --fieldStroke: rgba(255,255,255,0.16);

  --danger: rgba(255,77,77,0.95);
}

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

body{
  margin:0;
  color:var(--text);
  font-family:-apple-system, system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;

  background:
    radial-gradient(1200px 600px at 15% 10%, rgba(124, 92, 255, 0.55), transparent 55%),
    radial-gradient(900px 500px at 85% 25%, rgba(49, 209, 255, 0.45), transparent 60%),
    radial-gradient(900px 500px at 55% 95%, rgba(255, 100, 170, 0.35), transparent 60%),
    linear-gradient(180deg, #070a14, #0b1020 40%, #070a14);

  -webkit-tap-highlight-color: transparent;
}

/* Layout */
.app{
  max-width:520px;
  margin:0 auto;
  min-height:100svh;
  display:flex;
  flex-direction:column;
  padding:
    calc(18px + env(safe-area-inset-top))
    18px
    calc(22px + env(safe-area-inset-bottom));
}

.title{
  margin:8px 0 6px;
  text-align:center;
  font-family:"Pacifico", -apple-system, system-ui, sans-serif;
  font-size:44px;
  letter-spacing:0.5px;
  line-height:1.05;
  text-shadow:
    0 10px 34px rgba(0,0,0,0.45),
    0 0 22px rgba(124,92,255,0.18);
  user-select:none;
}

.center{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:center;
}

/* Card – deutlich höher */
.card{
  width:100%;
  min-height: 320px;              /* ⬅️ größer in Y-Richtung */
  padding: 26px 18px;             /* mehr Innenraum */
  border-radius: 28px;

  display:flex;
  flex-direction:column;
  justify-content:center;

  background: linear-gradient(180deg, var(--card2), var(--card));
  border:1px solid var(--stroke);
  box-shadow:
    0 22px 60px rgba(0,0,0,0.45),
    0 1px 0 rgba(255,255,255,0.06) inset;

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* Fields */
.field{
  width:100%;
  border-radius:22px;
  border:1px solid var(--fieldStroke);
  background:var(--field);
  color:var(--text);
  outline:none;
  box-shadow:0 10px 22px rgba(0,0,0,0.25);
}

/* Input */
.field--big{
  font-size:28px;
  padding:22px 18px;
  text-align:center;              /* ⬅️ Wert zentriert */
  font-variant-numeric:tabular-nums;
}

/* Placeholder zentriert */
.field--big::placeholder{
  text-align:center;
  color:var(--muted);
}

/* Output Row */
.outRow{
  margin-top: 48px;               /* ⬅️ Abstand verdoppelt */
  display:flex;
  align-items:center;
  gap:14px;
}

.field--mono{
  flex:1;
  font-size:32px;
  letter-spacing:2px;
  text-align:center;
  padding:20px 16px;
  font-variant-numeric:tabular-nums;
}

/* Copy Button */
.iconBtn{
  width:60px;
  height:60px;
  border-radius:22px;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,0.10);
  color:var(--text);
  display:grid;
  place-items:center;
  cursor:pointer;
  touch-action:manipulation;

  box-shadow:
    0 14px 30px rgba(0,0,0,0.28),
    0 1px 0 rgba(255,255,255,0.06) inset;

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  transition: transform 120ms ease, background 120ms ease, opacity 120ms ease;
  user-select:none;
}

.iconBtn svg{
  width:22px;
  height:22px;
  fill:currentColor;
}

.iconBtn:active{
  transform:scale(0.97);
  background:rgba(255,255,255,0.14);
}

.iconBtn:disabled{
  opacity:0.45;
  cursor:default;
}

/* Invalid input */
.invalid{
  border-color: rgba(255,77,77,0.75) !important;
  box-shadow:
    0 0 0 5px rgba(255,77,77,0.14) !important;
}