@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";
:root{--bg-primary:#faf7f4;--bg-secondary:#f0ebe5;--bg-elevated:#fff;--bg-sidebar:#f5f1ec;--surface-hover:#7b2d3b0f;--surface-active:#7b2d3b1a;--text-primary:#3d2b1f;--text-secondary:#7a6b5d;--text-muted:#a89b8c;--text-on-primary:#fff;--primary:#7b2d3b;--primary-light:#9c4454;--primary-dark:#5c1e2c;--primary-surface:#7b2d3b14;--accent:#a0895c;--accent-light:#c4ac7b;--border:#e2d9cf;--border-light:#ede7e0;--shadow-sm:0 1px 3px #3d2b1f14,0 1px 2px #3d2b1f0f;--shadow-md:0 4px 12px #3d2b1f14,0 2px 4px #3d2b1f0a;--shadow-lg:0 12px 32px #3d2b1f1a,0 4px 8px #3d2b1f0f;--shadow-toast:0 8px 24px #3d2b1f24;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--transition:.18s cubic-bezier(.4,0,.2,1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);min-height:100vh;color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{gap:16px;max-width:1440px;height:100vh;margin:0 auto;padding:16px;display:flex}.sidebar{background:var(--bg-elevated);border-radius:var(--radius-lg);border:1px solid var(--border-light);width:272px;min-width:272px;box-shadow:var(--shadow-sm);flex-direction:column;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border-light);justify-content:space-between;align-items:center;padding:16px 16px 12px;display:flex}.sidebar-title{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:13px;font-weight:600}.sidebar-actions{gap:4px;display:flex}.file-list-container{flex:1;min-height:0;padding:8px;overflow-y:auto}.tree-view{padding:0;list-style:none}.tree-view ul{padding-left:16px;list-style:none}.tree-view li{list-style:none}.tree-view details{margin-bottom:2px}.tree-view details>summary{list-style:none}.tree-view details>summary::-webkit-details-marker{display:none}.tree-view summary{border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);color:var(--text-secondary);-webkit-user-select:none;user-select:none;align-items:center;padding:6px 8px;font-size:13px;font-weight:500;display:flex}.tree-view summary:hover{background:var(--surface-hover)}.file-item{border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);color:var(--text-secondary);align-items:center;gap:8px;padding:6px 10px;font-size:13px;display:flex}.file-item:hover{background:var(--surface-hover);color:var(--text-primary)}.file-item.active{background:var(--primary-surface);color:var(--primary);font-weight:500}.file-name-input{color:inherit;background:0 0;border:none;outline:none;flex:1;min-width:0;font-family:inherit;font-size:13px}.btn{cursor:pointer;transition:all var(--transition);white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;gap:6px;font-family:inherit;font-weight:500;display:inline-flex}.btn:active{transform:scale(.97)}.btn-icon{border-radius:var(--radius-sm);width:32px;height:32px;color:var(--text-secondary);background:0 0;padding:0;font-size:14px}.btn-icon:hover{background:var(--surface-hover);color:var(--text-primary)}.btn-sm{border-radius:var(--radius-sm);height:32px;color:var(--text-secondary);background:0 0;padding:0 12px;font-size:12px}.btn-sm:hover{background:var(--surface-hover);color:var(--text-primary)}.btn-primary{border-radius:var(--radius-md);background:var(--primary);height:36px;color:var(--text-on-primary);box-shadow:var(--shadow-sm);padding:0 18px;font-size:13px}.btn-primary:hover{background:var(--primary-light);box-shadow:var(--shadow-md)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-outline{border-radius:var(--radius-md);background:var(--bg-elevated);height:36px;color:var(--text-primary);border:1px solid var(--border);padding:0 16px;font-size:13px}.btn-outline:hover{background:var(--surface-hover);border-color:var(--primary);color:var(--primary)}.btn-danger{border-radius:var(--radius-md);color:#c0392b;background:0 0;border:1px solid #e8caca;height:36px;padding:0 16px;font-size:13px}.btn-danger:hover{background:#fdf2f2;border-color:#c0392b}.btn-ghost-danger{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--text-muted);background:0 0;padding:0;font-size:12px}.btn-ghost-danger:hover{color:#c0392b;background:#fdf2f2}.main-area{background:var(--bg-elevated);border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.top-bar{border-bottom:1px solid var(--border-light);background:var(--bg-elevated);justify-content:space-between;align-items:center;gap:12px;min-height:52px;padding:8px 16px;display:flex}.tab-list{flex:1;align-items:center;gap:2px;padding:2px;display:flex;overflow-x:auto}.tab-item{border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);white-space:nowrap;background:0 0;border:none;align-items:center;gap:6px;padding:6px 12px;font-family:inherit;font-size:13px;font-weight:400;display:flex}.tab-item:hover{background:var(--surface-hover);color:var(--text-primary)}.tab-item.active{background:var(--primary-surface);color:var(--primary);font-weight:500}.tab-close{width:18px;height:18px;color:inherit;cursor:pointer;opacity:0;transition:all var(--transition);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:0;font-family:inherit;font-size:10px;display:flex}.tab-item:hover .tab-close,.tab-item.active .tab-close{opacity:.6}.tab-close:hover{color:#c0392b;background:#c0392b1a;opacity:1!important}.header-actions{align-items:center;gap:6px;display:flex}.editor-area,.editor-wrapper{flex-direction:column;flex:1;display:flex;overflow:hidden}.code-textarea{resize:none;width:100%;color:var(--text-primary);background:var(--bg-elevated);white-space:pre;tab-size:4;border:none;outline:none;flex:1;padding:20px 24px;font-family:JetBrains Mono,SF Mono,Cascadia Code,monospace;font-size:14px;line-height:1.7;overflow:auto}.code-textarea::placeholder{color:var(--text-muted);font-style:italic}.code-textarea:focus{background:#fffcfa}.hero-message{height:100%;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex}.hero-message p{font-size:14px;font-weight:500}.toast{z-index:100;background:var(--text-primary);color:var(--bg-primary);border-radius:var(--radius-md);box-shadow:var(--shadow-toast);align-items:center;gap:10px;padding:12px 20px;font-size:13px;font-weight:500;animation:.3s cubic-bezier(.4,0,.2,1) toast-in;display:flex;position:fixed;bottom:24px;right:24px}@keyframes toast-in{0%{opacity:0;transform:translateY(12px)scale(.96)}to{opacity:1;transform:translateY(0)scale(1)}}.folder-icon{color:var(--accent);align-items:center;margin-right:6px;display:inline-flex}.file-icon{color:var(--text-muted);flex-shrink:0;align-items:center;display:inline-flex}.file-item.active .file-icon{color:var(--primary)}.divider{background:var(--border);width:1px;height:20px;margin:0 4px}.brand{align-items:center;gap:8px;padding:16px;display:flex}.brand-mark{border-radius:var(--radius-sm);background:var(--primary);color:#fff;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;font-weight:700;display:flex}.brand-name{color:var(--text-primary);letter-spacing:-.3px;font-size:16px;font-weight:700}.animate-fade-in{animation:.4s cubic-bezier(.4,0,.2,1) fade-in}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@media (max-width:768px){.app-container{flex-direction:column;gap:8px;padding:8px}.sidebar{width:100%;min-width:0;max-height:200px}}.landing-container{background-color:var(--bg-primary);justify-content:center;align-items:center;width:100%;min-height:100vh;padding:20px;display:flex}.landing-content{flex-direction:column;align-items:center;gap:32px;width:100%;max-width:480px;display:flex}.landing-logo{text-align:center;flex-direction:column;align-items:center;gap:16px;display:flex}.brand-mark-large{border-radius:var(--radius-md);background:var(--primary);color:#fff;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:8px;display:flex}.landing-logo h1{color:var(--text-primary);letter-spacing:-.5px;font-size:32px;font-weight:700}.landing-logo p{color:var(--text-secondary);font-size:16px;line-height:1.5}.landing-card{background:var(--bg-elevated);border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow-lg);width:100%;padding:32px}.border-glow{position:relative}.border-glow:before{content:"";border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--primary-light)0%,transparent 50%,var(--accent-light)100%);z-index:-1;opacity:.3;position:absolute;inset:-1px}.form-label{color:var(--text-primary);margin-bottom:12px;font-size:14px;font-weight:600;display:block}.input-group{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);transition:all var(--transition);align-items:center;padding:4px 8px;display:flex}.input-group:focus-within{border-color:var(--primary);background:var(--bg-elevated);box-shadow:0 0 0 3px #7b2d3b1a}.url-prefix{color:var(--text-muted);-webkit-user-select:none;user-select:none;padding-left:8px;font-family:JetBrains Mono,monospace;font-size:14px}.site-input{color:var(--primary);background:0 0;border:none;outline:none;flex:1;min-width:0;padding:10px 8px;font-family:JetBrains Mono,monospace;font-size:15px;font-weight:500}.site-input::placeholder{color:var(--text-muted);font-weight:400}.random-btn{color:var(--text-muted)}.random-btn:hover{color:var(--primary);background:var(--surface-hover)}.submit-btn{width:100%;height:44px;margin-top:24px;font-size:15px}.error-message{color:#c0392b;align-items:center;gap:6px;margin-top:8px;font-size:13px;display:flex}.status-message{border-radius:var(--radius-md);text-align:center;margin-top:16px;padding:16px;font-size:14px;line-height:1.5}.status-exists{color:#8a5a19;background:#fff4e5;border:1px solid #ffe0b2}.status-new{color:#2e7d32;background:#e8f5e9;border:1px solid #c8e6c9}.mt-3{margin-top:12px}.w-full{width:100%}.sidebar-footer{border-top:1px solid var(--border-light);margin-top:auto;padding:12px 16px 16px}.item-actions-wrapper{flex-shrink:0;align-items:center;margin-left:auto;display:flex;position:relative}.action-menu-btn{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--text-muted);cursor:pointer;opacity:0;transition:all var(--transition);background:0 0;border:none;justify-content:center;align-items:center;padding:0;display:flex}.tree-view summary:hover .action-menu-btn,.file-item:hover .action-menu-btn{opacity:1}.action-menu-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.action-menu-btn.hover-danger:hover{color:#c0392b;background:#fdf2f2}.item-dropdown-menu{z-index:50;background:var(--bg-elevated);border:1px solid var(--border-light);border-radius:var(--radius-md);min-width:180px;box-shadow:var(--shadow-lg);padding:6px;animation:.15s dropdown-fade-in;position:absolute;top:100%;right:0}@keyframes dropdown-fade-in{0%{opacity:0;transform:translateY(-8px)scale(.95)}to{opacity:1;transform:translateY(0)scale(1)}}.item-dropdown-item{color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:8px 12px;font-family:inherit;font-size:13px;font-weight:500;transition:all .12s;display:flex}.item-dropdown-item:hover{color:var(--text-primary);background:var(--surface-hover)}.item-dropdown-item.danger{color:#ef4444}.item-dropdown-item.danger:hover{color:#dc2626;background:#ef444414}.modal-overlay{z-index:200;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0006;justify-content:center;align-items:center;animation:.2s fade-in;display:flex;position:fixed;inset:0}.modal-card{background:var(--bg-elevated);border-radius:var(--radius-lg);width:90%;max-width:420px;box-shadow:var(--shadow-lg);flex-direction:column;gap:16px;padding:28px;animation:.2s dropdown-fade-in;display:flex}.modal-title{color:var(--text-primary);font-size:18px;font-weight:700}.modal-description{color:var(--text-secondary);font-size:14px;line-height:1.6}.modal-actions{justify-content:flex-end;gap:10px;margin-top:8px;display:flex}