:root{
    --bg:rgb(227, 226, 226);
    --bg-soft:#ede2df;
    --brown-900:#3f2900;
    --brown-800:#5c3d00;
    --brown-700:#6e4a05;
    --brown-600:#805004;
    --brown-500:#8b5e0f;
    --brown-400:#a06f1a;
    --brown-300:#c99a4a;
    --cream:#fdf6ee;
    --gold:#e8b64a;
    --good:#5f8a4f;
    --bad:#b23b3b;
    --shadow: 0 10px 24px rgba(60, 38, 0, .18);
  }
  *{box-sizing:border-box;}
  
    /* DarkLight Mood */
  button,
.btn{
    background:var(--brown-800);
    color:white;
    padding:14px 30px;
    border:none;
    border-radius:11px;
    text-decoration:none;
    font-weight:bold;
    cursor:pointer;
    transition:.3s;
}
button:hover,
.btn:hover:hover{
    background:var(--brown-900);
    transform:translateY(-3px);
}

/*==END==*/
  body{
    margin:0;
    background: var(--bg);
    background-image: radial-gradient(circle at 15% 0%, #efe3e0 0%, var(--bg) 55%);
    font-family:'Poppins', sans-serif;
    color:var(--brown-900);
    min-height:100vh;
  }
  .wrap{max-width:980px;margin:0 auto;padding:48px 24px 100px;}
  header{text-align:center;margin-bottom:28px;}
  .brand{
    font-family:'Baloo 2', sans-serif;
    font-weight:800;
    font-size:clamp(32px, 5vw, 52px);
    color:var(--brown-600);
    display:flex;align-items:center;justify-content:center;gap:14px;
    margin:0;
  }
  .tagline{color:var(--brown-500);font-size:18px;margin-top:8px;font-weight:500;}
  .backbtn{
    display:inline-flex;align-items:center;gap:8px;
    margin-top:22px;padding:13px 26px;border-radius:14px;
    background:var(--brown-800);color:var(--cream);
    font-weight:700;text-decoration:none;font-size:15px;
    box-shadow:var(--shadow);
    transition:transform .15s ease, background .15s ease;
    border:none;cursor:pointer;
  }
  .backbtn:hover{background:var(--brown-900);transform:translateY(-2px);}
 
  .lesson-head{
    background:linear-gradient(145deg, var(--brown-600), var(--brown-800));
    border-radius:22px;padding:34px 32px;color:var(--cream);
    box-shadow:var(--shadow); margin:38px 0 30px;
    position:relative; overflow:hidden;
  }
  .lesson-head::after{
    content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
    background:radial-gradient(circle, rgba(232,182,74,.25), transparent 70%);
  }
  .eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;opacity:.85;font-weight:600;}
  .lesson-head h1{font-family:'Baloo 2';font-size:clamp(26px,4vw,38px);margin:8px 0 10px;}
  .lesson-head p{margin:0;opacity:.92;font-size:16px;line-height:1.6;max-width:560px;}
 
  section.card{
    background:var(--cream);
    border-radius:20px;
    padding:30px 28px;
    margin-bottom:26px;
    box-shadow: 0 6px 18px rgba(60,38,0,.08);
    border:1px solid #f0e3d8;
  }
  h2.section-title{
    font-family:'Baloo 2';color:var(--brown-700);font-size:22px;margin:0 0 6px;
    display:flex;align-items:center;gap:10px;
  }
  .section-sub{color:#8a7a63;margin:0 0 22px;font-size:15px;}
 
  /* Finger legend */
  .legend{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
  .legend-chip{
    display:flex;align-items:center;gap:8px;
    background:var(--bg-soft);padding:8px 14px;border-radius:30px;
    font-size:13.5px;font-weight:600;color:var(--brown-800);
  }
  .dot{width:14px;height:14px;border-radius:50%;display:inline-block;flex-shrink:0;}
 
  /* Keyboard */
  .keyboard{
    background:#2c2013;
    border-radius:18px;
    padding:22px 18px;
    box-shadow: inset 0 0 0 2px #4a3520, var(--shadow);
    overflow-x:auto;
  }
  .kb-row{display:flex;gap:7px;margin-bottom:7px;justify-content:center;}
  .key{
    min-width:44px;height:44px;
    border-radius:8px;
    display:flex;align-items:center;justify-content:center;
    font-weight:700;font-size:14px;color:#2c2013;
    background:#e9ddcf;
    box-shadow:0 3px 0 rgba(0,0,0,.25);
    transition: transform .12s ease, box-shadow .12s ease;
    user-select:none;
    flex-shrink:0;
  }
  .key.wide{min-width:70px;}
  .key.space{min-width:280px;}
  .key.active-pulse{ transform:translateY(2px); box-shadow:0 1px 0 rgba(0,0,0,.25); outline:3px solid var(--gold); }
 
  /* Practice */
  .drill-box{
    text-align:center;
    background:var(--bg-soft);
    border-radius:16px;
    padding:30px 20px;
  }
  .prompt-label{font-size:14px;color:#8a7a63;font-weight:600;letter-spacing:.06em;text-transform:uppercase;}
  .prompt-key{
    font-family:'Fira Code', monospace;
    font-size:56px;font-weight:600;
    color:var(--brown-800);
    margin:10px 0 4px;
  }
  .prompt-finger{color:var(--brown-500);font-weight:600;font-size:15px;margin-bottom:20px;}
  .drill-stats{display:flex;justify-content:center;gap:26px;margin-top:22px;font-size:14px;color:var(--brown-700);font-weight:600;}
  .drill-stats span b{font-size:20px;display:block;color:var(--brown-900);}
  .feedback{height:26px;font-weight:700;font-size:15px;margin-top:12px;}
  .feedback.good{color:var(--good);}
  .feedback.bad{color:var(--bad);}
  .restart{
    margin-top:18px;padding:10px 22px;border-radius:12px;border:2px solid var(--brown-600);
    background:transparent;color:var(--brown-700);font-weight:700;cursor:pointer;font-family:'Poppins';
    display:none;
  }
  .restart:hover{background:var(--brown-600);color:var(--cream);}
 
  .nav-btns{display:flex;justify-content:space-between;gap:14px;margin-top:36px;flex-wrap:wrap;}
  .navbtn{
    flex:1;min-width:200px;text-align:center;padding:16px;border-radius:16px;
    background:var(--brown-600);color:var(--cream);font-weight:700;text-decoration:none;
    box-shadow:var(--shadow);transition:transform .15s ease;
  }
  .navbtn:hover{transform:translateY(-2px);}
  .navbtn.ghost{background:transparent;border:2px solid var(--brown-500);color:var(--brown-700);box-shadow:none;}
 
  @media (max-width:640px){
    .key{min-width:30px;height:36px;font-size:11px;}
    .key.wide{min-width:48px;}
    .key.space{min-width:140px;}
    .prompt-key{font-size:42px;}
  }