:root{
  --lpink:#ffb6f3;
  --magenta:#ff4fd8;
  --purple:#9a5bff;
  --dpurple:#2b124a;
  --deep:#11061e;

  --txt:#ffffff;
  --muted: rgba(255,255,255,0.72);

  --glassA: rgba(154, 91, 255, 0.16);
  --glassB: rgba(255, 79, 216, 0.10);
  --stroke: rgba(255,255,255,0.14);
  --shadow: 0 28px 90px rgba(0,0,0,0.35);

  --blue:#4aa8ff;
  --focus: rgba(255,79,216,0.24);
}

*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}

body{
  font-family:'Hind Siliguri','Noto Sans Bengali',sans-serif;
  color:var(--txt);
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px 0;
  overflow-x:hidden;

  background:
    radial-gradient(900px 520px at 12% 10%, rgba(255,182,243,0.30), transparent 55%),
    radial-gradient(900px 520px at 88% 16%, rgba(255,79,216,0.22), transparent 55%),
    radial-gradient(900px 520px at 50% 90%, rgba(154,91,255,0.22), transparent 60%),
    linear-gradient(180deg, #3a0f5a 0%, var(--dpurple) 55%, var(--deep) 100%);
}

body:after{
  content:"";
  position:fixed; inset:0;
  background-image: radial-gradient(rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size:18px 18px;
  opacity:.10;
  pointer-events:none;
  z-index:0;
}

.particles{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:1;
  overflow:hidden;
}

.card{
  position:relative;
  z-index:2;
  width:min(92vw, 460px);
  border-radius:22px;
  padding:26px;
  background: linear-gradient(180deg, rgba(154,91,255,0.18), rgba(255,79,216,0.10));
  border:1px solid var(--stroke);
  box-shadow:var(--shadow);
  backdrop-filter: blur(16px);
  overflow:hidden;
}

.card:before{
  content:"";
  position:absolute; left:0; top:0; right:0; height:92px;
  background: linear-gradient(90deg, rgba(255,182,243,0.95), rgba(255,79,216,0.95), rgba(154,91,255,0.95));
  opacity:.22;
  z-index:0;
}

.card:after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 20% 10%, rgba(255,255,255,.20), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(255,255,255,.12), transparent 55%);
  opacity:.9;
  pointer-events:none;
  z-index:0;
}

.top-row{
  position:relative;
  z-index:2;
  padding:10px 6px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.brand .name{
  font-weight:1100;
  font-size:22px;
  letter-spacing:.2px;
  background: linear-gradient(90deg, var(--lpink), var(--magenta), var(--purple), var(--lpink));
  background-size: 220% 100%;
  -webkit-background-clip:text;
  background-clip:text;
  color: transparent;
  animation: brandShift 4.2s ease-in-out infinite;
}
@keyframes brandShift{
  0%{ background-position: 0% 50%; }
  50%{ background-position: 100% 50%; }
  100%{ background-position: 0% 50%; }
}

.brand .tag{
  font-size:13px;
  color: rgba(255,255,255,0.82);
  font-weight:800;
  margin-top:2px;
}

.badge{
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.18);
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 1100;
  font-size: 12px;
  color: rgba(255,255,255,0.92);
  box-shadow: 0 14px 34px rgba(0,0,0,0.18);
  user-select:none;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.badge:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.26);
}

.content{ position:relative; z-index:2; padding-top:18px; }

.bonus-info{
  background: linear-gradient(135deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 18px 48px rgba(0,0,0,0.18);
  border-radius: 16px;
  padding: 14px 14px;
  text-align:center;
  margin: 14px 0 16px;
}
.bonus-amount{ font-weight:1100; font-size:18px; margin-bottom:4px; }
.bonus-sub{ font-size:13px; font-weight:800; color: rgba(255,255,255,.74); }

.error{
  background: rgba(220,38,38,.14);
  border: 1px solid rgba(220,38,38,.22);
  color:#ffd1d1;
  padding: 12px 12px;
  border-radius: 14px;
  margin-bottom: 12px;
  font-weight: 800;
  font-size: 14px;
}

.form-group{ margin-bottom: 12px; }
.label{
  display:block;
  font-weight: 1100;
  color: rgba(255,255,255,0.92);
  margin-bottom: 8px;
  font-size: 14px;
}

.input-group{
  display:flex;
  align-items:center;
  gap:10px;
  padding: 12px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    0 16px 44px rgba(0,0,0,0.18);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.input-group:focus-within{
  border-color: rgba(255,79,216,0.55);
  box-shadow:
    0 0 0 4px var(--focus),
    0 20px 54px rgba(0,0,0,0.22),
    inset 0 1px 0 rgba(255,255,255,0.12);
  transform: translateY(-1px);
}

.icon{ width:22px; text-align:center; color: rgba(255,255,255,0.78); font-size:16px; opacity:.95; }

.input{
  flex:1;
  border:none;
  outline:none;
  background:transparent;
  font-size:15px;
  color: rgba(255,255,255,0.95);
  font-family:inherit;
  font-weight:800;
}
.input::placeholder{ color: rgba(255,255,255,.45); font-weight:700; }
.input[readonly]{ opacity:.82; cursor:not-allowed; }

.btn{
  width:100%;
  border:none;
  border-radius: 14px;
  padding: 14px 14px;
  cursor:pointer;
  font-weight: 1100;
  font-size: 16px;
  color:#ffffff;

  background: linear-gradient(135deg, rgba(255,79,216,0.95), rgba(154,91,255,0.92));
  box-shadow: 0 22px 60px rgba(0,0,0,0.28);
  position:relative;
  overflow:hidden;
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
  margin-top: 10px;
}
.btn .btn-txt{ position:relative; z-index:2; }
.btn .btn-glow{
  position:absolute;
  inset:-40%;
  background: radial-gradient(circle, rgba(255,255,255,0.22), transparent 55%);
  opacity:0;
  transition: opacity .2s ease;
  z-index:1;
}
.btn:before{
  content:"";
  position:absolute;
  top:-40%; left:-40%;
  width: 70%;
  height: 180%;
  transform: rotate(25deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent);
  opacity:.55;
  animation: shine 2.6s ease-in-out infinite;
}
@keyframes shine{
  0%{ transform: translateX(-140%) rotate(25deg); }
  60%{ transform: translateX(220%) rotate(25deg); }
  100%{ transform: translateX(220%) rotate(25deg); }
}
.btn:hover{ transform: translateY(-2px); filter:saturate(1.08); }
.btn:hover .btn-glow{ opacity:1; }
.btn:active{ transform: translateY(0px) scale(.99); }

.links{
  text-align:center;
  margin-top: 16px;
  color: rgba(255,255,255,.72);
  font-weight: 800;
  font-size: 14px;
  line-height:1.7;
}
.links a{
  color: var(--blue);
  text-decoration:none;
  font-weight: 1100;
}
.links a:hover{ opacity:.90; }

@media (max-width:480px){
  .card{ padding: 18px; border-radius: 18px; }
  .card:before{ height: 84px; }
  .brand .name{ font-size: 20px; }
  .badge{ padding: 7px 10px; }
}

/* Jhiri Jhiri Stars */
.star{
  position:absolute;
  width: var(--sz);
  height: var(--sz);
  border-radius: 999px;
  opacity: 0.85;
  transform: translate3d(var(--x), var(--y), 0);
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.95), rgba(255,255,255,0.14));
  box-shadow:
    0 0 10px rgba(255,255,255,0.35),
    0 0 18px rgba(255,79,216,0.18),
    0 0 22px rgba(154,91,255,0.16);
  animation: twinkle var(--tw) ease-in-out infinite, drift var(--dr) linear infinite;
  will-change: transform, opacity;
}
.star::after{
  content:"";
  position:absolute;
  inset:-12px;
  border-radius:999px;
  background: radial-gradient(circle, rgba(255,255,255,0.22), rgba(255,255,255,0));
  opacity: 0.6;
}
@keyframes twinkle{
  0%,100% { opacity: 0.20; transform: translate3d(var(--x), var(--y), 0) scale(var(--sc)); }
  50%     { opacity: 0.95; transform: translate3d(var(--x), var(--y), 0) scale(calc(var(--sc) * 1.15)); }
}
@keyframes drift{
  from { transform: translate3d(var(--x), calc(var(--y) + 18px), 0) scale(var(--sc)); }
  to   { transform: translate3d(var(--x), calc(var(--y) - 40px), 0) scale(var(--sc)); }
}
@media (prefers-reduced-motion: reduce){
  .star{ animation: none !important; }
}