@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root{
  --bg1:#0f3d91;
  --bg2:#1565c0;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;

  --primary:#1565c0;
  --primary2:#1d78e6;

  --border:#e6edf7;

  --r1:16px;
  --r2:12px;

  --shadow: 0 20px 60px rgba(2, 8, 23, .25);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

body{
  min-height:100vh;
  color:var(--text);
  background:
    radial-gradient(900px 500px at 20% 0%, rgba(255,255,255,.12), transparent 55%),
    radial-gradient(800px 500px at 100% 10%, rgba(0,0,0,.12), transparent 55%),
    linear-gradient(135deg, var(--bg1), var(--bg2));
  display:grid;
  place-items:center;
  padding:24px;
}

.container{
  width:min(900px, 96vw);
  padding:28px 26px;
  background:var(--card);
  border-radius:var(--r1);
  box-shadow:var(--shadow);
  border:1px solid rgba(15, 23, 42, .06);
}

/* Top stats feels like a real header bar */
.stats{
  display:flex;
  justify-content:flex-end;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:16px;
}
.stats span{
  font-weight:700;
  color:var(--text);
}

/* Quote block has a readable rhythm */
#quote{
  text-align:left;
  line-height:1.75;
  font-size:16px;
  color:#1f2937;
  background:#f6f9ff;
  border:1px solid var(--border);
  padding:16px 14px;
  border-radius:var(--r2);
  margin:18px 0 14px;
}

/* Textarea like a modern input */
textarea{
  resize:none;
  width:100%;
  border-radius:var(--r2);
  padding:12px 12px;
  font-size:15px;
  line-height:1.55;
  border:1px solid var(--border);
  outline:none;
  transition:border-color .15s ease, box-shadow .15s ease;
}
textarea::placeholder{color:#94a3b8}
textarea:focus{
  border-color:rgba(21,101,192,.45);
  box-shadow:0 0 0 4px rgba(21,101,192,.12);
}

/* Buttons feel clickable (hover + active + focus) */
button{
  border:none;
  padding:10px 16px;
  border-radius:12px;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .12s ease, background .15s ease, box-shadow .15s ease;
}

button:focus-visible{
  outline:none;
  box-shadow:0 0 0 4px rgba(21,101,192,.18);
}

/* Main action button */
button#btn,
button.start-btn,
button.primary{
  float:right;
  margin-top:14px;
  background:linear-gradient(180deg, var(--primary2), var(--primary));
  color:#fff;
  box-shadow:0 10px 22px rgba(21,101,192,.25);
}
button#btn:hover,
button.start-btn:hover,
button.primary:hover{
  transform:translateY(-1px);
  box-shadow:0 14px 26px rgba(21,101,192,.28);
}
button#btn:active,
button.start-btn:active,
button.primary:active{
  transform:translateY(0);
  box-shadow:0 8px 18px rgba(21,101,192,.22);
}

/* Result section */
.result{
  margin-top:22px;
  display:none;
  border-top:1px solid var(--border);
  padding-top:18px;
}

.result h3{
  text-align:center;
  margin-bottom:14px;
  font-size:18px;
  color:var(--text);
}

/* Metric cards instead of plain row */
.wrapper{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}

.wrapper > div{
  border:1px solid var(--border);
  background:#fbfdff;
  padding:14px 12px;
  border-radius:14px;
  text-align:center;
}

.wrapper span{
  display:block;
  font-weight:800;
  font-size:18px;
  margin-top:6px;
}

/* Feedback colors */
.success{color:#16a34a;}
.fail{color:#e11d48;}

/* Difficulty buttons as segmented control */
.difficulty{
  display:flex;
  gap:10px;
  margin-bottom:14px;
  flex-wrap:wrap;
}

.difficulty button{
  background:#f1f5f9;
  color:#0f172a;
  border:1px solid var(--border);
  padding:9px 12px;
  border-radius:999px;
  font-weight:700;
}
.difficulty button:hover{
  background:#eaf2ff;
  transform:translateY(-1px);
}
.difficulty button.active{
  background:rgba(21,101,192,.12);
  border-color:rgba(21,101,192,.28);
  color:var(--primary);
}

/* Mobile tweaks */
@media (max-width: 720px){
  .container{padding:22px 18px;}
  .wrapper{grid-template-columns:1fr;}
  button#btn,
  button.start-btn,
  button.primary{float:none;width:100%;}
}