:root {
    --bg: #0f172a;
    --card: #111827;
    --accent: #22c55e;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
    --focus: #38bdf8;
  }
  
  * { box-sizing: border-box; }
  
  html, body {
    height: 100%;
    background: radial-gradient(900px 600px at 10% 10%, #0b1220, var(--bg));
    color: var(--text);
    font-family: "Vazirmatn", system-ui, sans-serif;
  }
  
  .container {
    max-width: 720px;
    margin: 5vh auto;
    padding: 0 16px;
  }
  
  h1 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    font-weight: 700;
  }
  
  .card {
    background: linear-gradient(180deg, #0b1220 0%, var(--card) 100%);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  }
  
  .field { margin-bottom: 12px; }
  
  label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.9rem;
  }
  
  input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #0b1325;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  
  input:focus, select:focus {
    border-color: var(--focus);
    box-shadow: 0 0 0 3px rgba(56,189,248,0.2);
  }
  
  .field-group {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 10px;
    align-items: end;
  }
  
  .swap {
    align-self: end;
    height: 44px;
    width: 44px;
    border-radius: 12px;
    border: 1px dashed var(--border);
    background: #0b1325;
    color: var(--text);
    cursor: pointer;
    transition: transform 0.15s ease, background 0.2s;
  }
  .swap:hover { transform: rotate(180deg); background: #0d1730; }
  
  .actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
  }
  
  .btn {
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #0b1325;
    color: var(--text);
    cursor: pointer;
  }
  .btn:hover { background: #0d1730; }
  
  .btn.primary {
    background: linear-gradient(90deg, #16a34a, #22c55e);
    border: none;
    color: #052e1b;
    font-weight: 700;
  }
  .btn.primary:hover { filter: brightness(1.05); }
  
  .result {
    margin-top: 16px;
    padding: 14px;
    border-radius: 12px;
    background: #0b1325;
    border: 1px solid var(--border);
    font-size: 1.05rem;
  }
  
  .rate-info {
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.9rem;
  }
  
  .footer {
    margin-top: 16px;
    text-align: center;
    color: var(--muted);
  }
  
  /* ریسپانسیو */
  @media (max-width: 560px) {
    .field-group {
      grid-template-columns: 1fr 44px 1fr;
    }
  }
  
  .actions a#back{
    text-decoration: none;
    color : #000;
    background : #FBC02D;
  }
  .actions a#blog{
    text-decoration: none;
    background : #283593;
  }

  footer a{
    color : #fff;
    text-decoration:  none;
  }
  .select2-container li{
    color : #000!important;
  }
  input{
    color:#fff;
  }