:root{--bg-main:#f8fafc;--bg-card:#ffffff;--border-color:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--primary:#3b82f6;--hover-bg:#f1f5f9}.tool-container{font-family:'Inter',system-ui,sans-serif;color:var(--text-main);display:flex;flex-direction:column;gap:1.5rem}.card{background:var(--bg-card);padding:1.5rem;border-radius:1rem;box-shadow:0 4px 15px rgb(0 0 0 / .03);border:1px solid var(--border-color)}.card-title{margin:0 0 1rem 0;font-size:1.1rem;color:var(--text-muted);display:flex;align-items:center;gap:.5rem}.input-row{display:flex;flex-direction:column;gap:1.5rem}@media (min-width:768px){.input-row{flex-direction:row;align-items:center}}.input-group{display:flex;flex-direction:column;gap:.5rem}.flex-1{flex:1}.flex-2{flex:2}.input-group label{font-weight:600;color:var(--text-muted);font-size:.9rem;text-transform:uppercase;letter-spacing:.5px}.form-input,.form-select{padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:.75rem;background:var(--bg-main);color:var(--text-main);outline:none;transition:border-color 0.2s;width:100%}.form-input:focus,.form-select:focus{border-color:var(--primary)}.text-xl{font-size:1.25rem}.text-2xl{font-size:1.5rem}.font-bold{font-weight:700}.text-primary{color:var(--primary)}.help-text{font-size:.8rem;color:var(--text-muted)}.divider-v{display:none;width:2px;height:60px;background:var(--border-color);margin:0 1rem}@media (min-width:768px){.divider-v{display:block}}.conversions-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}@media (min-width:768px){.conversions-grid{grid-template-columns:1fr 1fr}}.results-list{display:flex;flex-direction:column;gap:.5rem}.result-row{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--bg-main);border-radius:.5rem;cursor:pointer;transition:background 0.2s,transform 0.1s;border:2px solid #fff0}.result-row:hover{background:var(--hover-bg)}.result-row:active{transform:scale(.98)}.result-row.active-source{border-color:var(--primary);background:#eff6ff}.result-val{font-family:monospace;font-size:1.25rem;font-weight:700}.result-unit{color:var(--text-muted);font-weight:600}.bottom-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}@media (min-width:992px){.bottom-grid{grid-template-columns:1fr 1fr}}.scale-card{display:flex;flex-direction:column}.scale-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.form-select-sm{padding:.5rem;border:1px solid var(--border-color);border-radius:.5rem;font-size:.9rem;outline:none}.scale-list{display:flex;flex-direction:column;gap:.25rem}.scale-row{display:flex;align-items:center;padding:.5rem 0;border-bottom:1px solid var(--border-color)}.scale-row:last-child{border-bottom:none}.scale-level{width:40px;font-weight:700;color:var(--text-muted)}.scale-px{flex:1;font-family:monospace;font-weight:600}.scale-rem{color:var(--text-muted);font-family:monospace}.preview-export-col{display:flex;flex-direction:column;gap:1.5rem}.preview-card{position:relative}.preview-badge{position:absolute;top:1.5rem;right:1.5rem;background:var(--primary);color:#fff;padding:.25rem .75rem;border-radius:1rem;font-size:.85rem;font-weight:600}.preview-box{background:var(--bg-main);padding:2rem;border-radius:.75rem;min-height:150px;display:flex;align-items:center;overflow:hidden}#live-text{margin:0;width:100%;outline:none;line-height:1.2;transition:font-size 0.2s}.css-card pre{background:#1e293b;color:#f8fafc;padding:1rem;border-radius:.75rem;overflow-x:auto;font-family:monospace;font-size:.9rem;margin:0}.css-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.css-header .card-title{margin:0}.btn-copy-sm{background:none;border:none;color:var(--text-muted);cursor:pointer;transition:color 0.2s}.btn-copy-sm:hover{color:var(--primary)}.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);background:var(--text-main);color:#fff;padding:.75rem 1.5rem;border-radius:2rem;font-weight:600;opacity:0;transition:all 0.3s cubic-bezier(.68,-.55,.265,1.55);z-index:1000;display:flex;align-items:center;gap:.5rem}.toast i{color:#4ade80}.toast.show{transform:translateX(-50%) translateY(0);opacity:1}