:root{--font-display:"Syne",sans-serif;--font-body:"Outfit",sans-serif;--font-mono:"JetBrains Mono",monospace;--ease-out-expo:cubic-bezier(.16,1,.3,1);--bg-primary:#0c0c0c;--bg-secondary:#1a1a1a;--bg-elevated:#181818d9;--text-primary:#fff;--text-secondary:#b0b0b0;--text-muted:#707070;--accent:#d4af37;--accent-dim:#d4af3726;--border:#ffffff1a;--border-strong:#ffffff26;--shadow-color:#00000080;--input-bg:#ffffff08;--noise-opacity:.045;--spotlight-dim:.14;--toast-bg:#0f0f0feb;--toast-border:#ffffff1f;--toast-text-primary:#f5f5f5;--toast-text-muted:#b8b8b8;--toast-shadow:0 24px 80px #0009}[data-theme=dark]{--bg-primary:#0c0c0c;--bg-secondary:#1a1a1a;--bg-elevated:#181818d9;--text-primary:#fff;--text-secondary:#b0b0b0;--text-muted:#707070;--accent:#d4af37;--accent-dim:#d4af3726;--border:#ffffff1a;--border-strong:#ffffff26;--shadow-color:#00000080;--input-bg:#ffffff08;--noise-opacity:.045;--spotlight-dim:.14;--toast-bg:#0f0f0feb;--toast-border:#ffffff1f;--toast-text-primary:#f5f5f5;--toast-text-muted:#b8b8b8;--toast-shadow:0 24px 80px #0009}[data-theme=light]{--bg-primary:#f7f3eb;--bg-secondary:#fff;--bg-elevated:#ffffffe6;--text-primary:#111827;--text-secondary:#374151;--text-muted:#6b7280;--accent:#c58c1a;--accent-dim:#c58c1a29;--border:#00000024;--border-strong:#0003;--shadow-color:#00000024;--input-bg:#ffffffb3;--noise-opacity:.06;--spotlight-dim:.07;--toast-bg:#fffffff0;--toast-border:#00000014;--toast-text-primary:#111827;--toast-text-muted:#4b5563;--toast-shadow:0 16px 50px #00000026}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{height:100vh;overflow:hidden}body{background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100vh;transition:background-color .3s,color .3s;overflow:hidden}#root{width:100%;min-height:100vh}::selection{background:var(--accent);color:#000}.qc-root{background:var(--bg-primary);flex-direction:column;justify-content:center;align-items:center;width:100%;min-height:100vh;transition:background-color .3s;display:flex;position:relative;overflow:hidden}.qc-root:before{content:"";background:radial-gradient(ellipse 110% 90% at 50% -24%,rgba(0,0,0,var(--spotlight-dim))0%,transparent 60%),radial-gradient(ellipse 100% 80% at 50% -20%,var(--accent-dim)0%,transparent 60%);pointer-events:none;position:absolute;inset:0}.qc-noise{opacity:var(--noise-opacity);pointer-events:none;mix-blend-mode:soft-light;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");position:absolute;inset:0}.qc-main{z-index:10;width:100%;max-width:580px;padding:0 1rem;position:relative}.qc-spotlight{background:linear-gradient(180deg,rgba(0,0,0,var(--spotlight-dim)),#0000),linear-gradient(120deg,#ffffff0a,#fff0),var(--bg-elevated);border:1px solid var(--border);transition:background-color .3s var(--ease-out-expo),border-color .3s var(--ease-out-expo),box-shadow .3s var(--ease-out-expo);-webkit-backdrop-filter:blur(40px)saturate(180%);backdrop-filter:blur(40px)saturate(180%);box-shadow:0 0 0 1px var(--border)inset,0 25px 50px -12px var(--shadow-color);border-radius:16px;padding:0;position:relative;overflow:hidden}.qc-spotlight:before{content:"";background:linear-gradient(90deg,transparent,var(--border-strong),transparent);pointer-events:none;height:1px;position:absolute;top:0;left:0;right:0}.qc-spotlight:focus-within{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent-dim)inset,0 25px 50px -12px var(--shadow-color),0 0 60px var(--accent-dim)}.qc-input-wrapper{background:var(--input-bg);align-items:center;padding:1.25rem 1.5rem;display:flex;position:relative}.qc-input-wrapper:before{content:"=";font-family:var(--font-mono);color:var(--text-muted);flex-shrink:0;margin-right:1rem;font-size:1.5rem;font-weight:500}.qc-input{width:100%;font-family:var(--font-body);color:var(--text-primary);letter-spacing:-.01em;caret-color:var(--accent);background:0 0;border:none;outline:none;padding:0;font-size:1.5rem;font-weight:500}.qc-input::placeholder{color:var(--text-muted)}.qc-result-section{transition:grid-template-rows .35s var(--ease-out-expo);grid-template-rows:0fr;display:grid}.qc-result-section.show{grid-template-rows:1fr}.qc-result-inner{overflow:hidden}.qc-divider{background:var(--border);height:1px;transition:transform .3s var(--ease-out-expo);margin:0;transform:scaleX(0)}.qc-result-section.show .qc-divider{transform:scaleX(1)}.qc-result{opacity:0;transition:opacity .25s ease .1s,transform .25s var(--ease-out-expo).1s;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.5rem;display:flex;transform:translateY(-8px)}.qc-result-section.show .qc-result{opacity:1;transform:translateY(0)}.qc-result-value{font-family:var(--font-mono);color:var(--accent);letter-spacing:-.01em;font-size:1.25rem;font-weight:500;transition:all .2s}.qc-result-sub{font-family:var(--font-body);color:var(--text-muted);letter-spacing:.02em;cursor:pointer;background:var(--input-bg);border:1px solid var(--border);border-radius:6px;flex-shrink:0;align-items:center;gap:.5rem;padding:.4rem .75rem;font-size:.75rem;font-weight:500;transition:all .2s;display:flex}.qc-result-sub:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}.qc-result-sub:before{content:"↵";opacity:.6;font-size:.875rem}.qc-copy-flash{animation:.4s copyFlash}@keyframes copyFlash{0%{box-shadow:0 0 0 0 var(--accent-dim)}50%{box-shadow:0 0 0 4px var(--accent-dim)}to{box-shadow:0 0 0 0 var(--accent-dim)}}.qc-toolbar{z-index:50;gap:.5rem;display:flex;position:fixed;bottom:2rem;right:2rem}.qc-tool-btn{background:var(--input-bg);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;height:40px;min-height:40px;font-family:var(--font-body);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:0 10px 28px var(--shadow-color);border-radius:12px;justify-content:center;align-items:center;gap:.4rem;padding:0 .85rem;font-size:.9375rem;font-weight:500;transition:all .2s;display:inline-flex;position:relative;overflow:hidden}.qc-tool-btn:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}.qc-tool-btn:active{transform:scale(.95)}.qc-theme-btn{padding:0 .95rem}.qc-tool-btn-icon{width:40px;color:var(--text-muted);padding:0}.qc-tool-icon{color:var(--accent);justify-content:center;align-items:center;display:inline-flex}.qc-tool-label{letter-spacing:.01em;color:var(--text-secondary);font-size:.8rem;transition:color .25s}.qc-tool-btn svg{width:18px;height:18px}.qc-icon-swap{width:20px;height:20px;position:relative}.qc-theme-icon{opacity:0;transition:opacity .28s var(--ease-out-expo),transform .28s var(--ease-out-expo);justify-content:center;align-items:center;display:inline-flex;position:absolute;inset:0;transform:scale(.8)rotate(-10deg)}.qc-theme-icon.is-active{opacity:1;transform:scale(1)rotate(0)}.qc-icon-system svg{width:17px;height:17px}.qc-theme-pulse{background:radial-gradient(circle at 50% 50%,var(--accent-dim)0%,transparent 50%);opacity:0;pointer-events:none;position:absolute;inset:-8px}.qc-modal{z-index:100;opacity:0;pointer-events:none;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.qc-picker-backdrop{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000b3;position:absolute;inset:0}[data-theme=light] .qc-picker-backdrop{background:#ffffffb3}.qc-modal-panel{background:var(--bg-secondary);border:1px solid var(--border);-webkit-backdrop-filter:blur(40px);backdrop-filter:blur(40px);width:90%;max-width:560px;max-height:80vh;box-shadow:0 25px 50px -12px var(--shadow-color);border-radius:16px;padding:2rem;position:relative;overflow-y:auto}.qc-modal-panel::-webkit-scrollbar{width:6px}.qc-modal-panel::-webkit-scrollbar-track{background:0 0}.qc-modal-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.qc-modal-close-icon{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:.5rem;transition:all .2s;display:flex;position:absolute;top:1rem;right:1rem}.qc-modal-close-icon:hover{background:var(--input-bg);color:var(--text-primary)}.qc-modal-header{margin-bottom:1.5rem}.qc-modal-header h2{font-family:var(--font-body);color:var(--text-primary);letter-spacing:-.01em;margin-bottom:.25rem;font-size:1rem;font-weight:600}.qc-modal-header p{font-family:var(--font-body);color:var(--text-muted);font-size:.8125rem}.qc-guide-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem;display:grid}.qc-guide-grid h3{font-family:var(--font-body);text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:.75rem;font-size:.625rem;font-weight:500}.qc-guide-grid ul{list-style:none}.qc-guide-grid li{font-family:var(--font-body);color:var(--text-secondary);margin-bottom:.5rem;font-size:.8125rem}code{font-family:var(--font-mono);background:var(--accent-dim);color:var(--accent);border-radius:4px;padding:.15rem .4rem;font-size:.75em}kbd{font-family:var(--font-mono);background:var(--input-bg);border:1px solid var(--border);color:var(--text-secondary);border-radius:4px;padding:.1rem .35rem;font-size:.75em}.qc-footer{color:var(--text-muted);font-family:var(--font-body);align-items:center;gap:.75rem;font-size:.75rem;display:flex;position:absolute;bottom:2rem;left:50%;transform:translate(-50%)}.qc-footer-handle{transition:color .2s}.qc-footer-handle:hover{color:var(--text-secondary)}.qc-footer-link{color:inherit;text-decoration:none;transition:color .3s;position:relative}.qc-footer-link:after{content:"";background:var(--accent);width:0;height:1px;transition:width .3s var(--ease-out-expo);position:absolute;bottom:-2px;left:0}.qc-footer-link:hover{color:var(--accent)}.qc-footer-link:hover:after{width:100%}.qc-toast{background:var(--toast-bg);border:1px solid var(--toast-border);color:var(--toast-text-primary);font-family:var(--font-body);opacity:0;transition:opacity .4s var(--ease-out-expo),transform .4s var(--ease-out-expo);pointer-events:none;z-index:200;-webkit-backdrop-filter:blur(20px)saturate(180%);backdrop-filter:blur(20px)saturate(180%);box-shadow:var(--toast-shadow);border-radius:14px;align-items:center;gap:.8rem;min-width:230px;max-width:calc(100% - 2.5rem);padding:.9rem 1rem;font-size:.9rem;font-weight:600;display:flex;position:fixed;top:2rem;left:50%;overflow:hidden;transform:translate(-50%)translateY(-16px)scale(.96)}.qc-toast-icon{background:var(--accent-dim);width:32px;height:32px;color:var(--accent);box-shadow:inset 0 0 0 1px var(--border);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.qc-toast-icon svg{width:14px;height:14px}.qc-toast-text{flex-direction:column;gap:.15rem;display:flex}.qc-toast-title{letter-spacing:-.01em}.qc-toast-sub{color:var(--toast-text-muted);font-size:.8rem;font-weight:500}.qc-toast-bar{background:linear-gradient(90deg,var(--accent),var(--accent));transform-origin:0;opacity:.9;height:2px;transition:transform linear;position:absolute;bottom:0;left:0;right:0;transform:scaleX(0)}.qc-toast.show{opacity:1;transform:translate(-50%)translateY(0)scale(1)}.qc-toast.show .qc-toast-bar{transition:transform 2s linear;transform:scaleX(1)}.qc-sr-only{clip:rect(0,0,0,0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:640px){.qc-spotlight{border-radius:12px}.qc-input-wrapper{padding:1rem 1.25rem}.qc-input-wrapper:before{margin-right:.75rem;font-size:1.25rem}.qc-input{font-size:1.25rem}.qc-result{padding:.875rem 1.25rem}.qc-result-value{font-size:1.125rem}.qc-modal-panel{padding:1.5rem}.qc-guide-grid{grid-template-columns:1fr;gap:1.25rem}.qc-toolbar{bottom:1.5rem;right:1.5rem}.qc-footer{bottom:1.5rem}.qc-toast{width:calc(100% - 2.5rem);min-width:0}}