/* ── Formal / Informal Rewriter v1.0 ── */
:root{--fir-primary:#4f6af0;--fir-formal:#1a1a2e;--fir-informal:#e05a8a;--fir-radius:12px;}
.fir-wrap{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;max-width:820px;margin:0 auto;padding:0 16px 56px;color:#1a1a2e;}

/* Hero */
.fir-hero{text-align:center;padding:38px 24px 30px;background:linear-gradient(135deg,#fff5fb 0%,#f0f4ff 100%);border-radius:16px;border:1px solid #e3e8f5;margin-bottom:28px;}
.fir-hero-badge{display:inline-block;background:#e8f8f0;color:#0faa6e;font-size:0.75rem;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;padding:4px 12px;border-radius:50px;margin-bottom:14px;}
.fir-hero h2{font-size:1.85rem;font-weight:800;margin:0 0 10px;letter-spacing:-0.5px;}
.fir-hero p{color:#5a6480;font-size:1rem;margin:0;line-height:1.6;}

/* Direction toggle */
.fir-direction-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin-bottom:24px;}
.fir-dir-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:18px 16px;border:2px solid #dde3ec;border-radius:var(--fir-radius);background:#fff;cursor:pointer;transition:border-color 0.15s,background 0.15s,transform 0.12s;box-shadow:0 2px 8px rgba(0,0,0,0.05);}
.fir-dir-btn:hover{border-color:var(--fir-primary);transform:translateY(-2px);}
.fir-dir-btn--active{border-color:var(--fir-primary);background:#f0f4ff;}
.fir-dir-icon{font-size:1.8rem;}
.fir-dir-label{font-size:0.9rem;color:#1a1a2e;text-align:center;}
.fir-dir-label strong{display:block;font-weight:700;}
.fir-dir-sub{font-size:0.75rem;color:#888;}
.fir-dir-divider{font-size:1.4rem;color:#aab0cc;text-align:center;font-weight:300;}

/* Input */
.fir-label{display:block;font-size:0.88rem;font-weight:600;color:#444;margin-bottom:8px;}
.fir-input-wrap{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;flex-wrap:wrap;}
.fir-textarea{flex:1;min-width:200px;padding:12px 14px;border:2px solid #dde3ec;border-radius:var(--fir-radius);font-size:0.95rem;line-height:1.55;color:#1a1a2e;resize:none;outline:none;font-family:inherit;transition:border-color 0.18s,box-shadow 0.18s;}
.fir-textarea:focus{border-color:var(--fir-primary);box-shadow:0 0 0 3px rgba(79,106,240,0.1);}
.fir-btn-primary{padding:12px 22px;background:var(--fir-primary);color:#fff;border:none;border-radius:50px;font-size:0.9rem;font-weight:700;cursor:pointer;transition:background 0.15s;white-space:nowrap;}
.fir-btn-primary:hover:not(:disabled){background:#3d58d8;}
.fir-btn-primary:disabled{opacity:0.4;cursor:not-allowed;}
.fir-btn-ghost{padding:10px 20px;background:#fff;color:#555;border:2px solid #dde3ec;border-radius:50px;font-size:0.88rem;font-weight:500;cursor:pointer;transition:border-color 0.15s,color 0.15s;}
.fir-btn-ghost:hover{border-color:var(--fir-primary);color:var(--fir-primary);}

/* Examples */
.fir-examples-row{display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap;}
.fir-examples-label{font-size:0.78rem;font-weight:600;color:#888;white-space:nowrap;padding-top:6px;}
.fir-examples-list{display:flex;flex-wrap:wrap;gap:6px;}
.fir-example-btn{padding:5px 12px;background:#f4f6ff;border:1.5px solid #dde3ec;border-radius:50px;font-size:0.78rem;color:#4f6af0;cursor:pointer;transition:background 0.12s,border-color 0.12s;text-align:left;}
.fir-example-btn:hover{background:#eef1ff;border-color:#4f6af0;}

/* Output */
.fir-output-section{margin-top:28px;}
.fir-hidden{display:none !important;}
.fir-output-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:start;margin-bottom:16px;}
.fir-output-arrow{font-size:1.5rem;color:#4f6af0;padding-top:36px;text-align:center;}
.fir-output-panel{background:#fff;border:1.5px solid #e3e8f5;border-radius:var(--fir-radius);padding:16px;box-shadow:0 2px 10px rgba(0,0,0,0.05);position:relative;}
.fir-panel-original{border-top:4px solid #dde3ec;}
.fir-panel-rewritten{border-top:4px solid var(--fir-primary);}
.fir-panel-label{font-size:0.75rem;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;color:#888;margin-bottom:10px;}
.fir-panel-text{font-size:0.97rem;line-height:1.65;color:#2d3555;}
.fir-panel-text--result{outline:none;cursor:text;min-height:40px;}
.fir-copy-btn{position:absolute;top:12px;right:12px;padding:4px 10px;background:#f4f6ff;border:1.5px solid #dde3ec;border-radius:50px;font-size:0.75rem;color:#4f6af0;cursor:pointer;transition:background 0.12s;}
.fir-copy-btn:hover{background:#eef1ff;border-color:#4f6af0;}

/* Explanation */
.fir-exp-box{background:#f4f6ff;border-left:4px solid var(--fir-primary);border-radius:0 10px 10px 0;padding:12px 16px;font-size:0.88rem;color:#2d3555;line-height:1.55;margin-bottom:16px;}
.fir-exp-label{font-weight:700;color:var(--fir-primary);margin-right:6px;}

/* Variants */
.fir-variants-section{margin-bottom:20px;}
.fir-variants-heading{font-size:0.83rem;font-weight:600;color:#888;margin:0 0 8px;}
.fir-variant-chip{padding:7px 14px;background:#f8f9ff;border:1.5px solid #e3e8f5;border-radius:50px;font-size:0.85rem;color:#2d3555;cursor:pointer;margin-right:6px;margin-bottom:6px;transition:background 0.12s,border-color 0.12s;}
.fir-variant-chip:hover{background:#eef1ff;border-color:var(--fir-primary);color:var(--fir-primary);}

/* Actions */
.fir-actions-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px;}

/* Toast */
.fir-toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:#1a1a2e;color:#fff;padding:10px 24px;border-radius:50px;font-size:0.88rem;font-weight:600;pointer-events:none;opacity:0;transition:opacity 0.22s,transform 0.22s;z-index:9999;white-space:nowrap;box-shadow:0 4px 20px rgba(0,0,0,0.2);}
.fir-toast--show{opacity:1;transform:translateX(-50%) translateY(0);}

/* CTA */
.fir-cta-box{display:flex;align-items:center;gap:18px;background:linear-gradient(135deg,#1a1a2e 0%,#2d3555 100%);border-radius:16px;padding:24px 28px;flex-wrap:wrap;}
.fir-cta-icon{font-size:2.2rem;flex-shrink:0;}
.fir-cta-text{flex:1;min-width:200px;}
.fir-cta-text strong{display:block;font-size:1rem;color:#fff;margin-bottom:4px;}
.fir-cta-text p{font-size:0.88rem;color:#b0b8d8;margin:0;line-height:1.5;}
.fir-btn-cta{display:inline-block;padding:12px 24px;background:#fff;color:#1a1a2e;border-radius:50px;font-size:0.9rem;font-weight:700;text-decoration:none;white-space:nowrap;transition:transform 0.12s,box-shadow 0.12s;flex-shrink:0;}
.fir-btn-cta:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,0.25);text-decoration:none;color:#1a1a2e;}

@media(max-width:600px){
  .fir-hero h2{font-size:1.4rem;}
  .fir-direction-row{grid-template-columns:1fr 1fr;gap:8px;}
  .fir-dir-divider{display:none;}
  .fir-output-grid{grid-template-columns:1fr;gap:10px;}
  .fir-output-arrow{display:none;}
  .fir-cta-box{flex-direction:column;text-align:center;}
  .fir-input-wrap{flex-direction:column;}
  .fir-btn-primary{width:100%;text-align:center;}
}