:root{--bg: #f5f7fa;--surface: #ffffff;--surface2: #eef2ff;--border: #e8ecf1;--text: #1a1a2e;--text2: #64748b;--accent: #4f6ef7;--accent2: #6c8cff;--accent-gradient: linear-gradient(135deg, #4f6ef7 0%, #6c8cff 100%);--success: #16a34a;--warning: #d97706;--danger: #dc2626;--radius: 12px;--shadow-sm: 0 2px 8px rgba(79, 110, 247, .08);--shadow-md: 0 4px 16px rgba(79, 110, 247, .12)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;border:none;background:var(--accent);color:#fff;padding:8px 16px;border-radius:8px;font-weight:500;transition:background .15s,box-shadow .15s}button:hover{background:var(--accent2)}button:disabled{opacity:.5;cursor:not-allowed}button.ghost{background:var(--surface);color:var(--text2);border:1px solid var(--border)}button.ghost:hover,button.ghost.active{background:var(--surface2);color:var(--accent);border-color:var(--accent)}button.danger{background:var(--danger)}button.danger:hover{background:#b91c1c}input,select,textarea{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:10px 12px;width:100%;color:var(--text)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #4f6ef71f}.app-shell{display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--bg)}.app-header{flex-shrink:0;height:56px;display:flex;align-items:center;gap:20px;padding:0 24px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);z-index:50}.header-logo{display:flex;align-items:center;gap:8px;border:none;background:none;font-size:18px;font-weight:700;color:var(--text);padding:0;flex-shrink:0}.header-logo:hover{color:var(--accent)}.header-logo-icon{font-size:22px}.header-nav{display:flex;align-items:center;gap:4px;flex:1;min-width:0;overflow-x:auto}.header-nav-item{border:none;background:none;padding:8px 14px;border-radius:8px;color:var(--text);font-size:14px;font-weight:500;white-space:nowrap;transition:background .15s,color .15s}.header-nav-item:hover{background:var(--surface2);color:var(--accent)}.header-nav-item.active{background:var(--surface2);color:var(--accent);font-weight:600}.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0}.header-search{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:0 14px;width:220px}.header-search-icon{font-size:14px;opacity:.6}.header-search input{border:none;background:transparent;padding:8px 0;box-shadow:none}.header-search input:focus{box-shadow:none}.header-login-btn{background:var(--accent);color:#fff;padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;white-space:nowrap}.header-login-btn:hover{background:var(--accent2)}.header-user{display:flex;align-items:center;gap:10px;font-size:13px}.header-username{color:var(--text2);white-space:nowrap}.header-admin-tag{font-size:11px;padding:2px 8px;border-radius:8px;background:var(--surface2);color:var(--accent)}.header-link-btn{background:none;color:var(--text2);padding:6px 10px;font-size:13px}.header-link-btn:hover{color:var(--accent);background:var(--surface2)}.app-body{flex:1;display:flex;min-height:0;overflow:hidden}.app-body-main{flex:1;overflow-y:auto;min-height:0;background:var(--bg)}.page-body-wide{width:100%}.sub-sidebar,.category-sidebar{width:200px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);overflow-y:auto;padding:12px 8px}.cat-nav-row{display:flex;align-items:center;gap:4px;margin-bottom:2px}.cat-nav-row .cat-nav-item{flex:1;min-width:0}.cat-nav-item{display:flex;align-items:center;gap:8px;width:100%;padding:10px 12px;border:none;background:none;color:var(--text);border-radius:8px;cursor:pointer;font-size:13px;text-align:left;transition:background .15s,color .15s;border-left:3px solid transparent}.cat-nav-item:hover{background:var(--bg);color:var(--accent)}.cat-nav-item.active{background:var(--surface2);color:var(--accent);font-weight:600;border-left-color:var(--accent)}.cat-nav-icon{flex-shrink:0;width:20px;text-align:center}.cat-nav-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cat-nav-count{font-size:11px;color:var(--text2);background:var(--bg);padding:1px 6px;border-radius:10px;flex-shrink:0}.page-body{padding:24px 32px 32px;max-width:1200px}.stats-bar{display:flex;gap:16px;margin-bottom:24px;flex-wrap:wrap}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;min-width:140px;box-shadow:var(--shadow-sm)}.stat-card .value{font-size:28px;font-weight:700;color:var(--accent)}.stat-card .label{font-size:13px;color:var(--text2);margin-top:2px}.toolbar{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap;align-items:center}.toolbar input{flex:1;min-width:200px;max-width:400px}.bookmark-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}.bookmark-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .15s,box-shadow .15s,transform .15s}.bookmark-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.bookmark-card.read{opacity:.72}.card-image{height:140px;background:var(--surface2);display:flex;align-items:center;justify-content:center;overflow:hidden}.card-image img{width:100%;height:100%;object-fit:cover}.card-image .placeholder{font-size:40px;opacity:.35}.card-body{padding:14px 16px}.card-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:8px}.card-header img.favicon{width:20px;height:20px;border-radius:4px;flex-shrink:0;margin-top:2px}.card-title{font-size:15px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-title a{color:var(--text);text-decoration:none}.card-title a:hover{color:var(--accent)}.card-summary{font-size:13px;color:var(--text2);line-height:1.5;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.tag{font-size:11px;padding:2px 8px;border-radius:12px;background:var(--surface2);color:var(--accent)}.card-actions{display:flex;gap:6px;flex-wrap:wrap}.card-actions button{font-size:12px;padding:4px 10px}.badge{font-size:11px;padding:2px 8px;border-radius:12px;font-weight:500}.badge.tools{background:var(--surface2);color:var(--accent)}.badge.reading{background:#fff8e1;color:#e65100}.badge.reference{background:#e8f5e9;color:#2e7d32}.badge.favorite{background:#f3e5f5;color:#7b1fa2}.badge.pending{background:#fff3e0;color:var(--warning)}.badge.visibility.public{background:var(--surface2);color:var(--accent)}.badge.visibility.private{background:#f1f5f9;color:var(--text2)}.nav-badge{margin-left:auto;font-size:10px;padding:1px 6px;border-radius:8px;font-weight:500}.nav-badge.public{background:var(--surface2);color:var(--accent)}.nav-badge.private{background:#fff8e1;color:#e65100}.nav-item.login-cta{background:var(--surface2);border:1px solid var(--border);color:var(--accent)}.nav-item.login-cta:hover{border-color:var(--accent)}.empty-state .hint{margin-top:8px;font-size:13px;color:var(--text2)}.login-page{height:100%;overflow-y:auto;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow-md)}.login-box h1{font-size:28px;margin-bottom:8px;color:var(--text)}.login-box p{color:var(--text2);margin-bottom:24px}.login-box .field{margin-bottom:16px}.login-box label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}.login-box .error{color:var(--danger);font-size:13px;margin-top:12px}.settings-form{max-width:600px}.settings-form .section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px;box-shadow:var(--shadow-sm)}.settings-form h3{margin-bottom:16px;font-size:16px;color:var(--text)}.settings-form .field{margin-bottom:14px}.settings-form label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}.settings-form .hint{font-size:12px;color:var(--text2);margin-top:4px}.empty-state{text-align:center;padding:60px 20px;color:var(--text2);background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius)}.empty-state .icon{font-size:48px;margin-bottom:16px}.dir-main{flex:1;overflow-y:auto;min-height:0;padding:0 32px 48px;background:var(--bg)}.dir-hero-light{text-align:center;padding:40px 20px 32px;margin-bottom:8px}.dir-hero-light h1{font-size:28px;font-weight:700;color:var(--text);margin-bottom:8px}.dir-hero-light p{font-size:14px;color:var(--text2);margin-bottom:24px}.dir-hero-search{display:flex;max-width:560px;margin:0 auto 12px;gap:8px}.dir-hero-search input{flex:1;padding:14px 20px;border-radius:28px;border:1px solid var(--border);box-shadow:var(--shadow-sm);font-size:15px}.dir-hero-search button{padding:14px 24px;border-radius:28px;white-space:nowrap}.dir-manage-link{background:none;color:var(--accent);font-size:13px;padding:4px 8px}.dir-manage-link:hover{text-decoration:underline}.dir-add-btn,.dir-section-add{flex-shrink:0;width:28px;height:28px;padding:0;border-radius:8px;background:var(--surface2);color:var(--accent);border:1px solid var(--border);font-size:18px;line-height:1;font-weight:600}.dir-add-btn:hover,.dir-section-add:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.dir-section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--accent)}.dir-section-head h2{font-size:18px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}.dir-section-empty{font-size:13px;color:var(--text2);padding:12px 0}.dir-badge.private{background:#f1f5f9;color:var(--text2)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f141e73;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal-box{position:relative;max-width:420px;width:100%}.modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;padding:0;border-radius:8px;background:transparent;color:var(--text2);font-size:22px;line-height:1}.modal-close:hover{background:var(--surface2);color:var(--text)}.add-tool-modal h1{font-size:22px}.tool-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px;box-shadow:var(--shadow-sm)}.tool-form .field label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}.tool-form h3{margin-bottom:16px}.tool-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tool-form-grid .full{grid-column:1 / -1}.tool-form-grid textarea{resize:vertical;min-height:60px}.checkbox-field label{display:flex;align-items:center;gap:8px;cursor:pointer}.checkbox-field input{width:auto}.tool-form-actions{display:flex;align-items:center;gap:12px;margin-top:16px}.tool-msg{font-size:14px;color:var(--text2)}.tool-count{font-size:13px;color:var(--text2);white-space:nowrap}.tool-loading{color:var(--text2);padding:20px 0}.tool-table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.tool-table{width:100%;border-collapse:collapse;font-size:14px}.tool-table th,.tool-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}.tool-table th{background:var(--bg);color:var(--text2);font-weight:600;font-size:12px}.tool-table tr:last-child td{border-bottom:none}.tool-cell-title{display:flex;gap:10px;align-items:flex-start}.tool-cell-title img{width:20px;height:20px;border-radius:4px;flex-shrink:0;margin-top:2px}.tool-cell-title strong{display:block;color:var(--text)}.tool-cell-url{display:block;font-size:11px;color:var(--text2);word-break:break-all;margin-top:2px}.tool-cell-summary{display:block;font-size:12px;color:var(--text2);margin-top:4px;line-height:1.4}.tool-row-actions{display:flex;gap:6px;flex-wrap:wrap}.tool-row-actions button{font-size:12px;padding:4px 10px}@media(max-width:768px){.tool-form-grid{grid-template-columns:1fr}}.dir-section{margin-bottom:36px}.dir-section-count{font-size:12px;font-weight:500;color:var(--text2);background:var(--border);padding:2px 8px;border-radius:12px}.dir-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.dir-card{display:flex;gap:12px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:inherit;transition:box-shadow .15s,border-color .15s,transform .15s}.dir-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.dir-add-card{flex-direction:column;align-items:center;justify-content:center;min-height:88px;border-style:dashed;border-color:var(--border);background:var(--surface);cursor:pointer;color:var(--text2);gap:8px}.dir-add-card:hover{border-color:var(--accent);color:var(--accent);background:var(--surface2);transform:translateY(-2px)}.dir-add-card-plus{font-size:32px;font-weight:300;line-height:1;color:var(--accent)}.dir-add-card-text{font-size:13px;font-weight:500}.dir-card-icon{width:44px;height:44px;border-radius:10px;background:var(--surface2);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;font-size:22px}.dir-card-icon img{width:28px;height:28px}.favicon-fallback{display:flex;align-items:center;justify-content:center;width:28px;height:28px;font-size:14px;font-weight:700;color:var(--accent);background:var(--surface);border-radius:6px}.dir-card-icon .favicon-fallback{width:100%;height:100%;font-size:18px;border-radius:10px}.dir-card-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.dir-card-desc{font-size:12px;color:var(--text2);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.dir-badge{font-size:10px;padding:1px 6px;border-radius:4px;background:#fff3e0;color:#e65100;font-weight:500}.dir-loading,.dir-empty{padding:80px 40px;text-align:center;color:var(--text2)}.dir-loading-full{flex:1;width:100%;display:flex;align-items:center;justify-content:center}.dir-empty code{display:inline-block;margin-top:12px;padding:8px 16px;background:var(--surface2);border-radius:8px;color:var(--accent);font-size:13px}@media(max-width:900px){.app-header{padding:0 12px;gap:12px}.header-search{width:160px}.header-nav{display:none}.category-sidebar,.sub-sidebar{width:160px}.dir-main{padding:0 16px 32px}.dir-hero-light{padding:28px 12px 24px}.dir-hero-light h1{font-size:22px}.page-body{padding:20px 16px 24px}}@media(max-width:768px){.app-body-dir,.app-body{flex-direction:column}.category-sidebar,.sub-sidebar{width:100%;max-height:120px;display:flex;flex-wrap:wrap;gap:4px;border-right:none;border-bottom:1px solid var(--border)}.cat-nav-row,.cat-nav-item{width:auto}.page-body{padding:16px}}