:root {
  --bg-primary: #0F0A1A;
  --bg-secondary: #1A1128;
  --bg-tertiary: #241B35;
  --bg-card: rgba(26,17,40,0.7);
  --bg-glass: rgba(30,20,50,0.6);
  --border: rgba(108,99,255,0.15);
  --border-hover: rgba(108,99,255,0.35);
  --text-primary: #F0ECF6;
  --text-secondary: #A89EC8;
  --text-muted: #6E5F8A;
  --accent-primary: #6C63FF;
  --accent-cyan: #00D9FF;
  --accent-pink: #FF6B9D;
  --accent-yellow: #FFD93D;
  --accent-green: #4ADE80;
  --accent-orange: #FB923C;
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm: 8px;
  --radius-md: 12px;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}
.app-container{display:flex;flex-direction:column;height:100vh;overflow:hidden}
.app-header{background:var(--bg-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:12px 20px;z-index:10;flex-shrink:0}
.header-content{display:flex;align-items:center;justify-content:space-between}
.logo-group{display:flex;align-items:center;gap:12px}
.logo-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:linear-gradient(135deg,rgba(108,99,255,0.15),rgba(0,217,255,0.1));border-radius:var(--radius-sm);border:1px solid var(--border)}
.app-header h1{font-size:1.15rem;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-cyan));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-0.02em}
.header-actions{display:flex;gap:8px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:none;border-radius:var(--radius-sm);font-family:var(--font);font-size:0.8rem;font-weight:600;cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:disabled{opacity:0.4;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--accent-primary),#8B5CF6);color:#fff;box-shadow:0 2px 12px rgba(108,99,255,0.3)}
.btn-primary:hover:not(:disabled){box-shadow:0 4px 20px rgba(108,99,255,0.5);transform:translateY(-1px)}
.btn-accent{background:linear-gradient(135deg,var(--accent-cyan),#0EA5E9);color:#0F0A1A;box-shadow:0 2px 12px rgba(0,217,255,0.2)}
.btn-accent:hover:not(:disabled){box-shadow:0 4px 20px rgba(0,217,255,0.4);transform:translateY(-1px)}
.btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border)}
.btn-secondary:hover:not(:disabled){border-color:var(--border-hover);color:var(--text-primary);background:rgba(108,99,255,0.1)}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid transparent}
.btn-ghost:hover:not(:disabled){color:var(--text-secondary);background:rgba(255,255,255,0.05)}
.btn-full{width:100%;justify-content:center;padding:10px 16px}
.main-content{display:flex;flex:1;overflow:hidden}
.input-panel{width:300px;min-width:260px;background:var(--bg-secondary);border-right:1px solid var(--border);overflow-y:auto;flex-shrink:0;display:flex;flex-direction:column}
.panel-section{padding:16px;border-bottom:1px solid var(--border)}
.panel-title{font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted);margin-bottom:12px}
.input-methods{display:flex;flex-direction:column;gap:10px}
.divider-text{text-align:center;color:var(--text-muted);font-size:0.75rem;position:relative}
.divider-text span{background:var(--bg-secondary);padding:0 10px;position:relative;z-index:1}
.divider-text::before{content:'';position:absolute;left:0;right:0;top:50%;height:1px;background:var(--border)}
.json-textarea{width:100%;min-height:120px;padding:12px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-family:'SF Mono','Fira Code',monospace;font-size:0.78rem;line-height:1.5;resize:vertical;transition:border-color var(--transition)}
.json-textarea:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(108,99,255,0.15)}
.json-textarea::placeholder{color:var(--text-muted)}
.filter-group{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
.filter-checkbox{display:flex;align-items:center;gap:10px;font-size:0.82rem;color:var(--text-secondary);cursor:pointer;padding:4px 0;transition:color var(--transition)}
.filter-checkbox:hover{color:var(--text-primary)}
.filter-checkbox input{display:none}
.checkmark{width:18px;height:18px;border-radius:4px;border:2px solid var(--text-muted);display:flex;align-items:center;justify-content:center;transition:all var(--transition);flex-shrink:0}
.checkmark::after{content:'';width:10px;height:10px;border-radius:2px;opacity:0;transform:scale(0);transition:all var(--transition)}
.filter-checkbox input:checked+.checkmark::after{opacity:1;transform:scale(1)}
.checkmark.deps{border-color:var(--accent-primary)}.checkmark.deps::after{background:var(--accent-primary)}
.checkmark.dev{border-color:var(--accent-cyan)}.checkmark.dev::after{background:var(--accent-cyan)}
.checkmark.peer{border-color:var(--accent-pink)}.checkmark.peer::after{background:var(--accent-pink)}
.checkmark.optional{border-color:var(--accent-yellow)}.checkmark.optional::after{background:var(--accent-yellow)}
.filter-checkbox input:checked+.checkmark.deps{border-color:var(--accent-primary);background:rgba(108,99,255,0.1)}
.filter-checkbox input:checked+.checkmark.dev{border-color:var(--accent-cyan);background:rgba(0,217,255,0.1)}
.filter-checkbox input:checked+.checkmark.peer{border-color:var(--accent-pink);background:rgba(255,107,157,0.1)}
.filter-checkbox input:checked+.checkmark.optional{border-color:var(--accent-yellow);background:rgba(255,217,61,0.1)}
.search-box{position:relative}
.search-box svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}
.search-box input{width:100%;padding:8px 12px 8px 34px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font);font-size:0.82rem;transition:border-color var(--transition)}
.search-box input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(108,99,255,0.15)}
.search-box input::placeholder{color:var(--text-muted)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.stat-card{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px;text-align:center;transition:border-color var(--transition)}
.stat-card:hover{border-color:var(--border-hover)}
.stat-value{display:block;font-size:1.3rem;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-cyan));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:0.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.06em}
.warning-title{color:var(--accent-orange)}
.circular-list{list-style:none}
.circular-list li{font-size:0.8rem;color:var(--accent-orange);padding:6px 10px;background:rgba(251,146,60,0.08);border-left:3px solid var(--accent-orange);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-bottom:6px;font-family:'SF Mono','Fira Code',monospace}
.graph-container{flex:1;position:relative;overflow:hidden;background:radial-gradient(ellipse at 30% 20%,rgba(108,99,255,0.04) 0%,transparent 60%),radial-gradient(ellipse at 70% 80%,rgba(0,217,255,0.03) 0%,transparent 60%),var(--bg-primary)}
#graph-canvas{display:none;width:100%;height:100%;cursor:grab}
#graph-canvas:active{cursor:grabbing}
.empty-state{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:40px}
.empty-icon{animation:float 4s ease-in-out infinite;margin-bottom:8px}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.empty-state h2{font-size:1.3rem;font-weight:700;background:linear-gradient(135deg,var(--text-primary),var(--text-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.empty-state p{color:var(--text-muted);font-size:0.9rem}
.tooltip{position:absolute;background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-hover);border-radius:var(--radius-sm);padding:10px 14px;pointer-events:none;z-index:100;box-shadow:var(--shadow-lg);animation:tooltipIn .15s ease-out}
@keyframes tooltipIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
.tooltip-name{font-weight:700;font-size:0.88rem;margin-bottom:4px}
.tooltip-version{font-size:0.78rem;color:var(--text-secondary);font-family:'SF Mono','Fira Code',monospace}
.tooltip-type{font-size:0.72rem;text-transform:uppercase;letter-spacing:0.06em;margin-top:4px;font-weight:600}
.drag-over .graph-container::after{content:'Drop package.json here';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(108,99,255,0.1);border:2px dashed var(--accent-primary);border-radius:var(--radius-md);color:var(--accent-primary);font-size:1.2rem;font-weight:600;z-index:50;backdrop-filter:blur(8px)}
@media(max-width:768px){.main-content{flex-direction:column}.input-panel{width:100%;min-width:unset;max-height:40vh;border-right:none;border-bottom:1px solid var(--border)}.header-actions{gap:4px}.btn{padding:6px 10px;font-size:0.75rem}.app-header h1{font-size:1rem}}
@media(max-width:480px){.logo-group{gap:8px}.logo-icon{width:32px;height:32px}.stats-grid{grid-template-columns:repeat(4,1fr);gap:6px}.stat-card{padding:6px}.stat-value{font-size:1rem}}
.input-panel::-webkit-scrollbar{width:6px}
.input-panel::-webkit-scrollbar-track{background:transparent}
.input-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.input-panel::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}