:root{--primary-blue:#036;--primary-hover:#024;--secondary-blue:#0055a4;--accent-color:#09f;--bg-light:#f4f7f9;--surface-white:#fff;--text-primary:#1a1a1a;--text-secondary:#5e6c84;--border-color:#dfe1e6;--success:#00875a;--warning:#ff991f;--danger:#de350b;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--transition-fast:.15s ease-in-out;--transition-normal:.25s ease-in-out}[data-theme=dark]{--bg-light:#121212;--surface-white:#1e1e1e;--text-primary:#e0e0e0;--text-secondary:#a0a0a0;--border-color:#333}.app-container{width:100%;min-height:100vh;display:flex}.sidebar{background-color:var(--surface-white);border-right:1px solid var(--border-color);width:280px;transition:var(--transition-normal);flex-direction:column;padding:1.5rem;display:flex}.sidebar-header{align-items:center;gap:12px;margin-bottom:2rem;display:flex}.sidebar-logo{object-fit:contain;width:40px;height:40px}.sidebar-title{margin:0;font-size:1.25rem}.sidebar-nav{flex-direction:column;flex:1;gap:.5rem;display:flex}.main-content{background-color:var(--bg-light);flex-direction:column;flex:1;display:flex;overflow-y:auto}.top-header{background-color:var(--surface-white);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;height:72px;padding:0 2rem;display:flex}.content-wrapper{width:100%;max-width:1200px;margin:0 auto;padding:2rem}.btn{border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast);border:none;outline:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:.95rem;font-weight:500;display:inline-flex}.btn-primary{background-color:var(--primary-blue);color:var(--surface-white)}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-primary:disabled{cursor:not-allowed;background-color:#a0aab2;transform:none}.btn-secondary{background-color:var(--surface-white);color:var(--primary-blue);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:var(--bg-light)}.nav-item{border-radius:var(--radius-md);color:var(--text-secondary);transition:var(--transition-fast);align-items:center;gap:12px;padding:12px 16px;font-weight:500;text-decoration:none;display:flex}.nav-item:hover{background-color:var(--bg-light);color:var(--primary-blue)}.nav-item.active{color:var(--primary-blue);background-color:#e6f0fa}.nav-item i{width:20px;height:20px}.card{background-color:var(--surface-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);transition:var(--transition-normal);padding:1.5rem}.card:hover{box-shadow:var(--shadow-md)}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:2rem;display:grid}.tool-card{cursor:pointer;flex-direction:column;gap:1rem;display:flex;position:relative;overflow:hidden}.tool-card.disabled{opacity:.6;cursor:not-allowed}.tool-card.disabled:hover{box-shadow:var(--shadow-sm);transform:none}.tool-icon-wrapper{border-radius:var(--radius-md);width:48px;height:48px;color:var(--primary-blue);background-color:#e6f0fa;justify-content:center;align-items:center;display:flex}.tool-title{margin:0;font-size:1.1rem}.tool-desc{color:var(--text-secondary);flex:1;font-size:.9rem}.badge{background-color:var(--bg-light);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:4px;padding:4px 8px;font-size:.75rem;font-weight:600;position:absolute;top:1rem;right:1rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-light);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}h1,h2,h3,h4,h5,h6{color:var(--primary-blue);font-weight:600}p{color:var(--text-secondary)}a{color:var(--accent-color);text-decoration:none}a:hover{text-decoration:underline}.compressor-container{animation:fadeIn var(--transition-normal);flex-direction:column;gap:2rem;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.upload-zone{border:2px dashed var(--primary-blue);border-radius:var(--radius-xl);text-align:center;background-color:var(--surface-white);cursor:pointer;transition:var(--transition-normal);flex-direction:column;align-items:center;gap:1rem;padding:4rem 2rem;display:flex}.upload-zone:hover,.upload-zone.drag-active{border-color:var(--accent-color);background-color:#e6f0fa}.upload-icon{width:64px;height:64px;color:var(--primary-blue)}.settings-panel{background-color:var(--surface-white);border-radius:var(--radius-lg);border:1px solid var(--border-color);padding:2rem}.settings-title{margin-bottom:1.5rem;font-size:1.25rem}.options-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;display:grid}.option-card{border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast);flex-direction:column;gap:.5rem;padding:1rem;display:flex}.option-card:hover{border-color:var(--primary-blue);background-color:var(--bg-light)}.option-card.selected{border-color:var(--primary-blue);box-shadow:0 0 0 1px var(--primary-blue);background-color:#e6f0fa}.option-header{color:var(--primary-blue);align-items:center;gap:8px;font-weight:600;display:flex}.option-desc{color:var(--text-secondary);font-size:.85rem}