:root{--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--font-mono:'JetBrains Mono','Fira Code',monospace;--radius:8px;--transition:0.2s cubic-bezier(0.4,0,0.2,1)}
[data-theme="dark"]{--bg:#0D1117;--bg2:#161B22;--bg-card:rgba(22,27,34,0.8);--bg-input:rgba(48,54,61,0.6);--border:rgba(48,54,61,0.8);--text:#E6EDF3;--text2:#8B949E;--text3:#484F58;--npm:#CC3534;--python:#3572A5;--accent-red:#FF6B6B;--accent-green:#3FB950;--accent-blue:#58A6FF;--accent-yellow:#D29922;--gradient:linear-gradient(135deg,#CC3534,#3572A5);--glass:rgba(13,17,23,0.6)}
[data-theme="light"]{--bg:#F6F8FA;--bg2:#FFFFFF;--bg-card:rgba(255,255,255,0.9);--bg-input:rgba(234,238,242,0.8);--border:rgba(208,215,222,0.8);--text:#1F2328;--text2:#656D76;--text3:#B1BAC4;--npm:#CB3837;--python:#3572A5;--accent-red:#CF222E;--accent-green:#1A7F37;--accent-blue:#0969DA;--accent-yellow:#BF8700;--gradient:linear-gradient(135deg,#CB3837,#3572A5);--glass:rgba(246,248,250,0.6)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}
.app{display:flex;flex-direction:column;min-height:100vh}
.header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--glass);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-left{display:flex;align-items:center;gap:12px}
.header-right{display:flex;align-items:center;gap:8px}
.logo{display:flex;align-items:center;gap:10px}
.logo h1{font-size:1.05rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.badge{font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:20px;background:var(--bg-input);color:var(--text2);border:1px solid var(--border)}
.btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-size:.82rem;font-weight:500;padding:7px 14px;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--gradient);color:#fff;border:none}
.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px rgba(204,53,52,.3)}
.btn-secondary{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover:not(:disabled){border-color:var(--accent-blue)}
.btn-ghost{background:transparent;color:var(--text2)}
.btn-ghost:hover:not(:disabled){color:var(--text);background:var(--bg-input)}
.btn-icon{background:transparent;color:var(--text2);padding:6px;border:none;border-radius:6px}
.btn-icon:hover:not(:disabled){color:var(--text);background:var(--bg-input)}
.layout{flex:1;display:flex;overflow:hidden}
.sidebar{width:320px;border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;background:var(--bg2);flex-shrink:0}
.sidebar-section{padding:14px 16px;border-bottom:1px solid var(--border)}
.sidebar-label{display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text2);margin-bottom:6px}
.select-input{width:100%;padding:8px 10px;font-family:var(--font-sans);font-size:.82rem;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);outline:none}
.select-input:focus{border-color:var(--accent-blue)}
.dep-textarea{width:100%;height:180px;font-family:var(--font-mono);font-size:.78rem;line-height:1.6;padding:10px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);resize:vertical;outline:none}
.dep-textarea:focus{border-color:var(--accent-blue)}
.dep-textarea::placeholder{color:var(--text3)}
.sidebar-actions{padding:14px 16px;display:flex;gap:8px;border-bottom:1px solid var(--border)}
.node-details{padding:14px 16px;border-bottom:1px solid var(--border)}
.node-details h3{font-size:.9rem;font-weight:600;margin-bottom:10px;color:var(--accent-blue)}
.detail-row{display:flex;justify-content:space-between;font-size:.8rem;padding:4px 0}
.detail-label{color:var(--text2)}
.stats-panel{padding:14px 16px}
.stats-panel h3{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text2);margin-bottom:10px}
.stat{display:flex;justify-content:space-between;padding:4px 0;font-size:.82rem}
.stat-label{color:var(--text2)}
.stat-value{font-weight:600;font-family:var(--font-mono)}
.graph-area{flex:1;position:relative;overflow:hidden}
#graph-canvas{display:block;width:100%;height:100%}
.graph-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;pointer-events:none}
.graph-empty h2{font-size:1.1rem;font-weight:600;color:var(--text2)}
.graph-empty p{font-size:.85rem;color:var(--text3);max-width:300px}
.toast-container{position:fixed;bottom:20px;right:20px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{padding:10px 16px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 12px rgba(0,0,0,.2);font-size:.82rem;animation:toastIn .3s ease}
.toast.success{border-left:3px solid var(--accent-green)}.toast.error{border-left:3px solid var(--accent-red)}.toast.info{border-left:3px solid var(--accent-blue)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
[data-theme="dark"] .icon-moon{display:none}[data-theme="dark"] .icon-sun{display:block}
[data-theme="light"] .icon-moon{display:block}[data-theme="light"] .icon-sun{display:none}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
@media(max-width:768px){.layout{flex-direction:column}.sidebar{width:100%;max-height:40vh;border-right:none;border-bottom:1px solid var(--border)}.dep-textarea{height:100px}.logo h1{font-size:.9rem}}