:root{--bg-color:#0f172a;--surface:#1e293b;--primary:#f59e0b;--text-main:#f8fafc;--text-muted:#94a3b8;--border:#334155;--radius:16px;--transition:all .2s ease-out}:root.light-mode{--bg-color:#f8fafc;--surface:#fff;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);min-height:100vh;font-family:Inter,system-ui,sans-serif;line-height:1.5}#app{flex-direction:column;max-width:1100px;min-height:100vh;margin:0 auto;padding:0 2rem;display:flex}.header{justify-content:space-between;align-items:center;padding:2rem 0;display:flex}.logo{letter-spacing:-.05em;cursor:pointer;align-items:center;gap:.75rem;font-size:1.5rem;font-weight:800;display:flex}.cat-icon,.highlight{color:var(--primary)}.upgrade-btn{color:#fff;cursor:pointer;transition:var(--transition);background:linear-gradient(135deg,#f59e0b,#d97706);border:none;border-radius:999px;padding:.6rem 1.25rem;font-weight:600;box-shadow:0 4px 14px #f59e0b4d}.upgrade-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #f59e0b66}.hero{text-align:center;margin:5rem 0}.hero h2{letter-spacing:-.05em;background:linear-gradient(90deg,#fff,#94a3b8);color:#0000;-webkit-background-clip:text;background-clip:text;margin-bottom:1rem;font-size:3.5rem;font-weight:800;line-height:1.1}.hero p{color:var(--text-muted);font-size:1.25rem}.tool-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:5rem;display:grid}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:var(--transition);padding:2rem;position:relative;overflow:hidden}.tool-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 10px 30px #0003}.tool-icon{margin-bottom:1rem;font-size:2.5rem}.tool-card h3{margin-bottom:.5rem;font-size:1.25rem}.tool-card p{color:var(--text-muted);font-size:.95rem}footer{text-align:center;color:var(--text-muted);border-top:1px solid var(--border);margin-top:auto;padding:2rem 0;font-size:.875rem}.hidden{display:none!important}.tool-view{animation:.3s ease-out forwards fadeIn;display:none}.tool-view.active{display:block}.tool-header{margin-bottom:2rem}.tool-header h2{margin-bottom:.5rem;font-size:2rem}.tool-header p{color:var(--text-muted)}.upload-area{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;cursor:pointer;transition:var(--transition);background:#1e293b80;padding:4rem 2rem}.upload-area:hover,.upload-area.dragover{border-color:var(--primary);background:#f59e0b0d}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}