:root{
  --bg1:#0f2027;
  --bg2:#2c5364;
  --glass: rgba(255,255,255,0.06);
  --accent: rgba(255,255,255,0.08);
  --radius: 12px;
  --transition: 240ms cubic-bezier(.2,.9,.3,1);
  --maxw: 860px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color:#eef2f6;
  background: linear-gradient(135deg, var(--bg1) 0%, var(--bg2) 100%);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 20px;
}

/* header */
.site-header{
  text-align:center;
  margin-bottom:28px;
}
.site-header h1{
  margin:0;
  font-size:clamp(1.4rem, 3vw, 2.2rem);
  letter-spacing:0.4px;
  background: linear-gradient(90deg,#fff,#cfe8ff);
  -webkit-background-clip:text;
  color:transparent;
}
.site-header .lead{
  margin:6px 0 0;
  color:rgba(255,255,255,0.75);
  font-size:0.95rem;
}

/* container */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: calc(var(--radius) + 4px);
  padding:22px;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6), inset 0 1px 0 rgba(255,255,255,0.02);
}

/* list and cards */
.word-list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap:14px;
}
.card{
  display:block;
  text-decoration:none;
  padding:18px 16px;
  border-radius:12px;
  background:linear-gradient(180deg,var(--glass), rgba(255,255,255,0.02));
  border:1px solid rgba(255,255,255,0.04);
  color: white;
  font-weight:600;
  box-shadow: 0 6px 18px rgba(2,6,23,0.45);
  transform: translateY(0);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  text-align:center;
  backdrop-filter: blur(6px) saturate(120%);
}

/* hover effects */
.card:hover{
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 18px 40px rgba(2,6,23,0.6);
  filter:brightness(1.03);
}

/* color variations */
.card.berry{ background: linear-gradient(180deg, rgba(182,70,125,0.18), rgba(182,70,125,0.06)); border-color: rgba(182,70,125,0.22); }
.card.coral { background: linear-gradient(180deg, rgba(255,127,80,0.12), rgba(255,127,80,0.04)); border-color: rgba(255,127,80,0.18); }
.card.crimson{ background: linear-gradient(180deg, rgba(220,20,60,0.12), rgba(220,20,60,0.04)); border-color: rgba(220,20,60,0.18); }
.card.forest { background: linear-gradient(180deg, rgba(34,139,34,0.12), rgba(34,139,34,0.04)); border-color: rgba(34,139,34,0.18); }
.card.amber  { background: linear-gradient(180deg, rgba(184,134,11,0.12), rgba(184,134,11,0.04)); border-color: rgba(184,134,11,0.18); }

/* responsive tweaks */
@media (max-width:420px){
  .card{ padding:14px; font-size:0.95rem; }
  body{ padding:30px 12px; }
}