:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--bg-color:#f8fafc;--bg-gradient:linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);--card-bg:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--input-bg:#fff;--success-color:#10b981;--success-hover:#059669;--info-box-bg:#1e293b;--info-box-text:#cbd5e1;--info-box-heading:#fff;--font-family:"Inter", system-ui, -apple-system, sans-serif;justify-content:center;width:100%;display:flex}[data-theme=dark]{--bg-color:#0f172a;--bg-gradient:linear-gradient(135deg, #0f172a 0%, #1e293b 100%);--card-bg:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#334155;--input-bg:#0f172a;--info-box-bg:#0f172a;--info-box-text:#94a3b8;--info-box-heading:#f8fafc}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--bg-gradient);color:var(--text-main);justify-content:center;align-items:center;min-height:100vh;padding:2rem;transition:background .3s,color .3s;display:flex}.app-container{grid-template-columns:1fr 1fr;align-items:flex-start;gap:2rem;width:100%;max-width:900px;display:grid}@media (width<=768px){.app-container{grid-template-columns:1fr}}.header-wrapper{grid-column:1/-1;justify-content:space-between;align-items:center;width:100%;margin-bottom:3rem;display:flex}.header h1{letter-spacing:-.5px;color:var(--text-main);margin-bottom:.5rem;font-size:2.5rem;font-weight:800}.header p{color:var(--text-muted);font-size:1.1rem}.theme-toggle{background:var(--card-bg);border:1px solid var(--border-color);color:var(--text-main);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:.5rem;transition:all .2s;display:flex}.theme-toggle:hover{border-color:var(--primary-color);transform:scale(1.1)}.card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:1.25rem;padding:2rem;transition:background-color .3s,border-color .3s;box-shadow:0 10px 25px -5px #0000000d,0 8px 10px -6px #00000003}.form-group{text-align:left;margin-bottom:1.25rem}.form-group label{color:var(--text-main);text-align:left;margin-bottom:.5rem;font-size:.875rem;font-weight:600;display:block}.form-control{background-color:var(--input-bg);width:100%;color:var(--text-main);border:1px solid var(--border-color);border-radius:.5rem;outline:none;padding:.75rem 1rem;font-family:inherit;font-size:1rem;transition:all .2s}.form-control:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e51a}.upload-area{border:2px dashed var(--border-color);text-align:center;cursor:pointer;background-color:#0000;border-radius:.75rem;margin-bottom:1.5rem;padding:2.5rem 1rem;transition:all .2s;position:relative;overflow:hidden}.upload-area:hover{border-color:var(--primary-color);background-color:#4f46e505}.upload-area.dragging{border-color:var(--primary-color);background-color:#4f46e51a;transform:scale(1.02)}.upload-area.has-image{border-color:var(--primary-color);padding:0}.upload-icon{width:48px;height:48px;color:var(--primary-color);opacity:.8;pointer-events:none;margin-bottom:1rem}.hidden-input{display:none}.image-preview{object-fit:cover;width:100%;max-height:250px;display:block}.preview-overlay{color:#fff;opacity:0;background:#0009;justify-content:center;align-items:center;font-weight:600;transition:opacity .2s;display:flex;position:absolute;inset:0}.upload-area:hover .preview-overlay{opacity:1}.btn{color:#fff;background-color:var(--primary-color);cursor:pointer;border:none;border-radius:.5rem;justify-content:center;align-items:center;gap:.5rem;width:100%;padding:.875rem 1.5rem;font-family:inherit;font-size:1rem;font-weight:600;transition:background-color .2s,transform .1s;display:flex}.btn:hover:not(:disabled){background-color:var(--primary-hover)}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.7;cursor:not-allowed}.btn-success{background-color:var(--success-color);margin-top:1.5rem}.btn-success:hover{background-color:var(--success-hover)}.info-box{background-color:var(--info-box-bg);color:var(--info-box-text);border:1px solid var(--border-color);border-radius:1rem;padding:1.5rem;font-size:.9rem;line-height:1.6;transition:all .3s}.info-box h3{color:var(--info-box-heading);margin-bottom:.75rem;font-size:1.1rem}.info-box ul{padding-left:1.25rem}.info-box li{margin-bottom:.5rem}.result-card{text-align:center}.result-icon{width:64px;height:64px;color:var(--success-color);margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}.spinner{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:1s ease-in-out infinite spin}