*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#6C5CE7;--primary-light:#A29BFE;--accent:#00CEC9;
  --bg:#0B0E11;--bg-sidebar:#0F1318;--bg-card:rgba(20,24,32,0.85);
  --bg-input:rgba(15,18,25,0.9);--text:#E8E6F0;--text-dim:#8B8AA0;
  --text-muted:#5A5872;--border:rgba(108,92,231,0.15);
  --success:#00B894;--danger:#FF6B6B;--warning:#FDCB6E;
  --radius:8px;--radius-sm:6px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;
  --mono:'JetBrains Mono','SFMono-Regular','Consolas',monospace;
  --transition:200ms ease;--glass-border:rgba(255,255,255,0.06)
}
html,body{height:100%;font-size:14px}
body{font-family:var(--font);background:var(--bg);color:var(--text);overflow:hidden;-webkit-font-smoothing:antialiased}
.app{display:flex;flex-direction:column;height:100vh}
.header{display:flex;align-items:center;justify-content:space-between;padding:.5rem 1rem;background:var(--bg-sidebar);border-bottom:1px solid var(--border);flex-shrink:0;gap:.5rem;flex-wrap:wrap}
.header-left{display:flex;align-items:center;gap:.5rem}
.header-title{font-size:.9rem;font-weight:700;background:linear-gradient(135deg,var(--primary-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-actions{display:flex;align-items:center;gap:.4rem}
.api-tag{font-size:.7rem;padding:.15rem .5rem;border-radius:99px}
.api-tag.supported{background:rgba(0,184,148,0.15);color:var(--success)}
.api-tag.unsupported{background:rgba(255,107,107,0.15);color:var(--danger)}
.workspace{display:flex;flex:1;overflow:hidden}
.sidebar{width:220px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;flex-shrink:0}
.sidebar-header{padding:.5rem .75rem;font-size:.75rem;font-weight:700;color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border)}
.file-tree{padding:.35rem;overflow-y:auto;flex:1}
.tree-item{display:flex;align-items:center;gap:.35rem;padding:.2rem .5rem;border-radius:var(--radius-sm);cursor:pointer;font-size:.78rem;color:var(--text-dim);transition:all var(--transition);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tree-item:hover{background:rgba(108,92,231,0.08);color:var(--text)}
.tree-item.active{background:rgba(108,92,231,0.15);color:var(--primary-light)}
.tree-item.dir{font-weight:600;color:var(--text-dim)}
.tree-indent{width:12px;flex-shrink:0}
.hint{font-size:.78rem;color:var(--text-muted);padding:.75rem}
.editor-area{display:flex;flex-direction:column;flex:1;overflow:hidden}
.tab-bar{display:flex;background:var(--bg-sidebar);border-bottom:1px solid var(--border);overflow-x:auto;flex-shrink:0}
.tab{display:flex;align-items:center;gap:.35rem;padding:.35rem .7rem;font-size:.78rem;color:var(--text-dim);background:transparent;border:none;border-right:1px solid var(--border);cursor:pointer;transition:all var(--transition);white-space:nowrap;font-family:var(--font)}
.tab:hover{background:rgba(108,92,231,0.06);color:var(--text)}
.tab.active{background:var(--bg);color:var(--text);border-bottom:2px solid var(--primary)}
.tab .modified{color:var(--warning);margin-left:.1rem}
.tab .close-tab{font-size:.7rem;padding:.1rem .2rem;border-radius:3px;opacity:0;transition:opacity 150ms}
.tab:hover .close-tab{opacity:1}
.find-bar{display:flex;align-items:center;gap:.3rem;padding:.3rem .5rem;background:var(--bg-sidebar);border-bottom:1px solid var(--border);flex-shrink:0}
.find-input{width:140px;padding:.25rem .4rem;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.78rem;font-family:var(--mono)}
.find-input:focus{outline:none;border-color:var(--primary)}
.find-count{font-size:.72rem;color:var(--text-muted)}
.editor-wrap{display:flex;flex:1;overflow:hidden}
.line-numbers{width:48px;background:var(--bg-sidebar);border-right:1px solid var(--border);padding:.6rem .25rem;font-family:var(--mono);font-size:.82rem;color:var(--text-muted);text-align:right;overflow-y:hidden;user-select:none;line-height:1.5}
.editor{flex:1;background:var(--bg);color:var(--text);border:none;outline:none;resize:none;padding:.6rem;font-family:var(--mono);font-size:.82rem;line-height:1.5;tab-size:2;white-space:pre;overflow:auto}
.status-bar{display:flex;align-items:center;gap:1rem;padding:.25rem .75rem;background:var(--bg-sidebar);border-top:1px solid var(--border);font-size:.72rem;color:var(--text-muted);flex-shrink:0}
.btn{display:inline-flex;align-items:center;gap:.25rem;padding:.35rem .7rem;border:none;border-radius:var(--radius-sm);font-size:.78rem;font-weight:600;font-family:var(--font);cursor:pointer;transition:all var(--transition)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff}
.btn-primary:hover{transform:translateY(-1px)}
.btn-accent{background:rgba(0,206,201,0.15);color:var(--accent);border:1px solid rgba(0,206,201,0.2)}
.btn-accent:hover{background:rgba(0,206,201,0.25)}
.btn-ghost{background:transparent;color:var(--text-dim)}
.btn-ghost:hover{color:var(--text);background:rgba(255,255,255,0.05)}
.btn-sm{font-size:.75rem;padding:.3rem .55rem}
.btn-xs{font-size:.7rem;padding:.2rem .4rem}
.hidden{display:none !important}
.toast-container{position:fixed;bottom:1rem;right:1rem;z-index:200;display:flex;flex-direction:column;gap:.4rem}
.toast{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);backdrop-filter:blur(20px);border-radius:var(--radius-sm);padding:.6rem .8rem;font-size:.78rem;color:var(--text);box-shadow:0 8px 40px rgba(0,0,0,0.4);animation:slideIn 300ms ease;max-width:300px}
::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:rgba(108,92,231,0.25);border-radius:3px}
@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
@media(max-width:640px){.sidebar{width:0;display:none}.header{flex-direction:column;align-items:flex-start}}