@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-color:#f8fafc;--panel-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--accent:#3b82f6;--accent-hover:#2563eb;--border:#e2e8f0}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-main);background-color:#0000;justify-content:center;align-items:flex-start;min-height:100vh;padding:32px;font-family:Inter,sans-serif;display:flex}.app-container{width:100%;max-width:1000px}.header{text-align:center;margin-bottom:2rem}.header h1{color:#1e293b;margin-bottom:8px;font-size:28px;font-weight:800}.header p{color:var(--text-muted);font-size:15px}.puzzle-layout{grid-template-columns:350px 1fr;gap:24px;width:100%;display:grid}.puzzle-controls{flex-direction:column;display:flex}.puzzle-workspace{background-color:var(--panel-bg);border:1px solid var(--border);text-align:center;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;min-height:500px;padding:40px;display:flex;box-shadow:0 4px 6px -1px #0000000d}.workspace-placeholder{color:var(--text-muted)}.workspace-placeholder .icon{opacity:.5;margin-bottom:16px;font-size:48px}.workspace-placeholder h2{color:var(--text-main);margin-bottom:8px;font-size:20px}.workspace-placeholder p{font-size:14px}.card{background-color:var(--panel-bg);border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:0 4px 6px -1px #0000000d}.form-group{margin-bottom:1.5rem}.form-group label{color:var(--text-main);margin-bottom:.5rem;font-size:13px;font-weight:600;display:block}.form-control{border:1px solid var(--border);width:100%;color:var(--text-main);background-color:#fff;border-radius:6px;padding:10px 12px;font-size:14px;transition:all .2s}.form-control:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #3b82f633}.radio-group{gap:1rem;display:flex}.radio-label{cursor:pointer;border:1px solid var(--border);background-color:#fff;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:13px;transition:all .2s;display:flex}.radio-label:hover{border-color:var(--accent)}.radio-label input[type=radio]{accent-color:var(--accent);width:1rem;height:1rem}.generate-btn{background-color:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;justify-content:center;align-items:center;gap:8px;width:100%;padding:12px;font-size:14px;font-weight:600;transition:background-color .2s;display:flex}.generate-btn:hover:not(:disabled){background-color:var(--accent-hover)}.generate-btn:disabled{opacity:.7;cursor:not-allowed}.progress-container{text-align:center;margin-top:1.5rem}.progress-bar{background-color:var(--border);border-radius:3px;width:100%;height:6px;margin-top:.5rem;overflow:hidden}.progress-fill{background-color:var(--accent);height:100%;transition:width .3s}.animate-spin{animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.back-btn{border:1px solid var(--border);color:var(--text-main);cursor:pointer;background:0 0;border-radius:6px;align-items:center;gap:4px;margin-bottom:16px;padding:6px 12px;font-size:13px;transition:background .2s;display:inline-flex}.back-btn:hover{background:#f1f5f9}