:root{--bg: #faf7f2;--surface: #ffffff;--surface-alt: #f1ece3;--text: #2b2a28;--text-muted: #726c64;--primary: #4a7c6f;--primary-dark: #386156;--primary-tint: #e4efec;--accent-warm: #c97b5c;--accent-warm-tint: #f5e6df;--danger: #a8453a;--danger-tint: #f6e6e4;--border: #e4ddd0;--shadow: 0 1px 2px rgba(43, 42, 40, .06), 0 4px 16px rgba(43, 42, 40, .06);--radius: 14px;--font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-fa: "Vazirmatn", "Inter", system-ui, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}h1,h2,h3{font-weight:600;line-height:1.25;text-wrap:balance;margin:0 0 .5em}p{margin:0 0 1em}a{color:var(--primary-dark)}button,input,textarea,select{font-family:inherit;font-size:inherit}.page{min-height:100%;display:flex;flex-direction:column}.centered-page{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border);background:var(--surface)}.brand{font-weight:700;font-size:1.1rem;color:var(--primary-dark);text-decoration:none}.app-main{flex:1;width:100%;max-width:720px;margin:0 auto;padding:32px 20px}.stack{display:flex;flex-direction:column;gap:16px}.row{display:flex;align-items:center;gap:12px}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card-tight{padding:16px 20px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.field label{font-size:.875rem;font-weight:500;color:var(--text-muted)}.field input,.field textarea{padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text)}.field input:focus,.field textarea:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:var(--primary)}.error-text{color:var(--danger);font-size:.875rem}.hint-text{color:var(--text-muted);font-size:.8rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:10px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:opacity .15s ease,transform .05s ease}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover:not(:disabled){border-color:var(--primary)}.btn-danger{background:var(--surface);color:var(--danger);border-color:var(--danger-tint)}.btn-danger:hover:not(:disabled){background:var(--danger-tint)}.btn-block{width:100%}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:.8rem;font-weight:600;background:var(--primary-tint);color:var(--primary-dark)}.badge-warm{background:var(--accent-warm-tint);color:var(--accent-warm)}.chat-shell{display:flex;flex-direction:column;height:calc(100vh - 65px);max-width:720px;margin:0 auto;width:100%}.chat-progress{height:4px;background:var(--border)}.chat-progress-fill{height:100%;background:var(--primary);transition:width .4s ease}.chat-messages{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:14px}.message-row{display:flex;flex-direction:column;max-width:80%}.message-row.from-me{align-self:flex-end;align-items:flex-end}.message-row.from-other{align-self:flex-start;align-items:flex-start}.message-sender{font-size:.75rem;color:var(--text-muted);margin-bottom:4px;padding:0 4px}.message-bubble{padding:12px 16px;border-radius:16px;font-family:var(--font-fa);line-height:1.7;white-space:pre-wrap}.message-row.from-me .message-bubble{background:var(--primary);color:#fff;border-bottom-right-radius:4px}.message-row.from-other .message-bubble{background:var(--surface-alt);color:var(--text);border-bottom-left-radius:4px}.message-row.ai .message-bubble{background:var(--surface);border:1px solid var(--border)}.chat-composer{display:flex;gap:10px;padding:16px 20px;border-top:1px solid var(--border);background:var(--surface)}.chat-composer textarea{flex:1;resize:none;border:1px solid var(--border);border-radius:12px;padding:10px 14px;font-family:var(--font-fa);min-height:44px;max-height:140px}.typing-indicator{color:var(--text-muted);font-size:.85rem;padding:0 20px 8px}.pairing-code{font-family:monospace;font-size:1.6rem;letter-spacing:.2em;font-weight:700;color:var(--primary-dark);background:var(--primary-tint);padding:12px 20px;border-radius:10px;text-align:center}.text-muted{color:var(--text-muted)}.text-center{text-align:center}