:root{
    --bg:#120F2A; --surface:#1E1949; --surface-2:#261E5C;
    --text:#F4F1FF; --text-dim:#B3ACDB;
    --coral:#FF5D73; --coral-dim:#4A1B22;
    --gold:#FFC857; --gold-dim:#4A3711;
    --mint:#5EEAD4; --mint-dim:#0F3D36;
    --border:rgba(244,241,255,0.12); --radius:16px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  body{background:var(--bg);color:var(--text);font-family:'Inter',sans-serif;line-height:1.6;padding:40px 20px;}
  h1,h2{font-family:'Fredoka',sans-serif;font-weight:600;}
  .mono{font-family:'JetBrains Mono',monospace;}
  .wrap{max-width:820px;margin:0 auto;}
  .back-link{display:inline-block;margin-bottom:20px;font-size:13px;color:var(--text-dim);}
  .back-link:hover{color:var(--gold);}
  header{margin-bottom:32px;}
  .eyebrow{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--mint);margin-bottom:8px;display:block;}
  header h1{font-size:clamp(28px,5vw,38px);}
  header p{color:var(--text-dim);margin-top:8px;max-width:600px;}

  .note{
    background:var(--gold-dim);border:1px solid rgba(255,200,87,0.3);color:var(--gold);
    border-radius:12px;padding:14px 18px;font-size:13.5px;
  }

  .panel{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:28px;margin-bottom:24px;}
  .panel h2{font-size:19px;margin-bottom:18px;}
  .subtitle{color:var(--text-dim);font-size:12px;margin:-12px 0 16px;}

  .converter-grid{display:grid;grid-template-columns:1fr 2fr auto;gap:14px;align-items:end;}
  .pair{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:end;}
  .field{display:flex;flex-direction:column;gap:6px;min-width:0;}
  .field label{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-dim);}
  input, select{
    background:var(--surface-2);border:1px solid var(--border);color:var(--text);
    padding:12px 14px;border-radius:10px;font-family:'Inter',sans-serif;font-size:14px;width:100%;
  }
  input:focus, select:focus{outline:none;border-color:var(--mint);}
  select{cursor:pointer;}
  .swap-btn{
    background:var(--surface-2);border:1px solid var(--border);color:var(--mint);
    width:44px;height:44px;border-radius:10px;font-size:18px;cursor:pointer;flex-shrink:0;
    transition:transform 0.25s ease, border-color 0.2s;
  }
  .swap-btn:hover{border-color:var(--mint);transform:rotate(180deg);}
  #convertBtn{
    background:var(--coral);color:#2A0A0F;border:none;padding:12px 22px;border-radius:10px;
    font-weight:600;font-size:14px;cursor:pointer;transition:transform 0.15s;white-space:nowrap;
  }
  #convertBtn:hover{transform:translateY(-2px);}
  #convertBtn:disabled{opacity:0.6;cursor:progress;}
  .error{color:var(--coral);font-size:13px;margin-top:12px;display:none;}

  .result{text-align:center;padding:34px 28px;}
  .result-label{display:block;color:var(--text-dim);font-size:13px;margin-bottom:8px;}
  .result-value{
    display:block;font-family:'Fredoka',sans-serif;font-size:clamp(32px,6vw,46px);font-weight:600;
    letter-spacing:-0.01em;margin-bottom:6px;
  }
  .result-value span{color:var(--gold);}
  .result-meta{color:var(--text-dim);font-size:12px;}

  .rates-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;}
  .rate-card{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:14px 16px;}
  .rate-code{font-family:'JetBrains Mono',monospace;font-weight:500;color:var(--gold);font-size:14px;}
  .rate-name{font-size:11px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .rate-value{display:block;font-size:16px;font-weight:600;margin-top:6px;}

  @media(max-width:720px){
    .converter-grid{grid-template-columns:1fr;}
    .pair{grid-template-columns:1fr auto 1fr;}
    #convertBtn{width:100%;}
  }
  @media(max-width:420px){
    .pair{grid-template-columns:1fr;}
    .swap-btn{justify-self:center;transform:rotate(90deg);}
    .swap-btn:hover{transform:rotate(270deg);}
  }