/* KnowFlow — RinUI Fluent Design Dark Theme */
:root {
    --c-topbar: #1a1a2e; --c-sidebar: #16213e; --c-active: #0f3460;
    --c-statbar: #0f0f23; --c-border: #2a2a4a; --c-border-h: #3a3a5c;
    --c-text: #fff; --c-text-r: #c0c0d0; --c-text-s: #a0a0b8; --c-text-m: #808090;
    --c-text-st: #707080; --c-text-d: #606070; --c-text-v: #505060;
    --c-green: #4caf50; --c-red: #f44336; --c-tag: #80b0e0; --c-gold: #ffd700;
    --font-cn: 'Microsoft YaHei','SimHei',sans-serif; --font-mono: 'JetBrains Mono',monospace;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{min-height:100vh;font-family:var(--font-mono);background:#0a0a1a;color:var(--c-text-r);overflow:hidden}
.hidden{display:none!important}

.rinui-layout{display:flex;flex-direction:column;height:100vh}
.rinui-topbar{display:flex;align-items:center;height:48px;min-height:48px;padding:0 16px;background:var(--c-topbar);border-bottom:1px solid var(--c-border);z-index:50;gap:16px}
.topbar-left{display:flex;align-items:center;gap:8px;flex-shrink:0}
.topbar-back{color:var(--c-text-m);text-decoration:none;font-size:16px;padding:4px 8px;border-radius:4px;transition:all .15s}
.topbar-back:hover{color:var(--c-text);background:rgba(255,255,255,.06)}
.topbar-icon{font-size:20px}.topbar-title{color:var(--c-text);font-size:17px;font-weight:700;font-family:var(--font-cn)}.topbar-subtitle{color:var(--c-text-m);font-size:11px;font-family:var(--font-cn)}
.topbar-search{flex:1;max-width:420px;display:flex;align-items:center;gap:8px;background:rgba(22,33,62,.6);border:1px solid var(--c-border);border-radius:8px;padding:0 12px;transition:border-color .2s}
.topbar-search:focus-within{border-color:var(--c-active);box-shadow:0 0 0 3px rgba(15,52,96,.2)}
.topbar-search .search-icon{color:var(--c-text-m);font-size:14px}
.topbar-search input{flex:1;background:0;border:0;outline:0;padding:8px 0;color:var(--c-text);font-size:13px;font-family:var(--font-cn)}
.topbar-search input::placeholder{color:var(--c-text-d)}
.search-clear{background:0;border:0;color:var(--c-text-m);font-size:18px;cursor:pointer;padding:0 4px}.search-clear:hover{color:var(--c-red)}
.topbar-right{display:flex;align-items:center;gap:6px;flex-shrink:0}
.topbar-sep{color:var(--c-border-h);margin:0 4px}.topbar-stat{color:var(--c-text-s);font-size:12px;font-family:var(--font-cn);white-space:nowrap}

.rinui-main{display:flex;flex:1;min-height:0;overflow:hidden}
.rinui-sidebar{width:220px;min-width:220px;background:var(--c-sidebar);border-right:1px solid var(--c-border);display:flex;flex-direction:column;padding:8px;overflow-y:auto}
.sidebar-label{display:flex;align-items:center;justify-content:space-between;color:var(--c-text-m);font-size:10px;font-family:var(--font-cn);padding:10px 8px 4px;text-transform:uppercase;letter-spacing:1.5px}
.sidebar-action-btn{background:0;border:1px solid var(--c-border-h);border-radius:4px;color:var(--c-text-m);width:20px;height:20px;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1;transition:all .15s}
.sidebar-action-btn:hover{color:var(--c-text);border-color:var(--c-tag);background:rgba(128,176,224,.1)}
.sidebar-btn{display:flex;align-items:center;gap:8px;width:100%;height:36px;padding:0 10px;background:0;border:0;border-radius:6px;color:var(--c-text-r);font-size:13px;font-family:var(--font-cn);cursor:pointer;transition:all .15s;text-align:left}
.sidebar-btn:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.sidebar-btn.active{background:var(--c-active);color:var(--c-text)}
.btn-count{margin-left:auto;font-size:10px;color:var(--c-text-m);background:rgba(255,255,255,.06);padding:1px 7px;border-radius:10px;font-family:var(--font-mono)}.sidebar-btn.active .btn-count{background:rgba(255,255,255,.15);color:var(--c-text)}

.category-list{display:flex;flex-direction:column;gap:2px}
.cat-item{display:flex;align-items:center;gap:6px;width:100%;height:32px;padding:0 10px;background:0;border:0;border-radius:6px;color:var(--c-text-s);font-size:12px;font-family:var(--font-cn);cursor:pointer;transition:all .15s;text-align:left}
.cat-item:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.cat-item.active{background:var(--c-active);color:var(--c-text)}
.cat-item .cat-count{margin-left:auto;font-size:10px;color:var(--c-text-m);font-family:var(--font-mono)}
.cat-item .cat-del{display:none;background:0;border:0;color:var(--c-text-d);cursor:pointer;font-size:13px;padding:0 2px}.cat-item:hover .cat-del{display:inline}.cat-item .cat-del:hover{color:var(--c-red)}

.tag-cloud{display:flex;flex-wrap:wrap;gap:4px;padding:4px 6px}
.tag-item{padding:3px 8px;background:rgba(15,52,96,.5);border:1px solid rgba(128,176,224,.12);border-radius:10px;color:var(--c-tag);font-size:10px;font-family:var(--font-mono);cursor:pointer;transition:all .15s;white-space:nowrap}
.tag-item:hover{background:var(--c-active);color:var(--c-text);transform:translateY(-1px)}
.tag-item.active{background:#1a4a80;color:var(--c-text);border-color:var(--c-tag)}

.sidebar-spacer{flex:1}
.sidebar-footer{padding:8px 4px;display:flex;flex-direction:column;gap:2px}
.sidebar-version{color:var(--c-text-v);font-size:10px;font-family:var(--font-mono)}
.sidebar-storage{color:var(--c-text-v);font-size:10px;font-family:var(--font-mono)}

.rinui-content{flex:1;overflow-y:auto;padding:20px;background:rgba(10,10,26,.3)}
.note-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;align-items:start}
.note-grid.list-view{grid-template-columns:1fr;max-width:800px;margin:0 auto}
.note-card{background:rgba(22,33,62,.75);border:1px solid var(--c-border);border-radius:10px;padding:18px;transition:all .25s;backdrop-filter:blur(10px);cursor:pointer;animation:cardIn .35s ease forwards;position:relative}
.note-card:hover{border-color:var(--c-border-h);transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.35);background:rgba(22,33,62,.9)}
@keyframes cardIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.card-fav{position:absolute;top:12px;right:14px;font-size:15px;cursor:pointer;opacity:.4;transition:all .2s;background:0;border:0;color:var(--c-gold)}.card-fav.active{opacity:1}.card-fav:hover{opacity:1;transform:scale(1.2)}
.card-cat{display:inline-block;font-size:10px;color:var(--c-tag);background:rgba(15,52,96,.5);padding:2px 8px;border-radius:8px;margin-bottom:8px;font-family:var(--font-mono)}
.card-title{color:var(--c-text);font-size:15px;font-weight:700;font-family:var(--font-cn);margin-bottom:8px;line-height:1.4;padding-right:28px}
.card-preview{color:var(--c-text-s);font-size:12px;line-height:1.6;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;padding-top:10px;border-top:1px solid var(--c-border);font-size:10px;color:var(--c-text-st);font-family:var(--font-mono)}
.card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}
.card-tag{font-size:10px;color:var(--c-tag);background:rgba(15,52,96,.4);padding:1px 7px;border-radius:8px;font-family:var(--font-mono)}
.card-actions{display:flex;gap:4px;opacity:0;transition:opacity .2s}.note-card:hover .card-actions{opacity:1}

.empty-state{text-align:center;padding:80px 20px;background:rgba(22,33,62,.3);border:1px dashed var(--c-border-h);border-radius:12px;max-width:500px;margin:60px auto}
.empty-icon{font-size:56px;display:block;margin-bottom:16px}
.empty-title{font-size:18px;color:var(--c-text-m);font-weight:700;font-family:var(--font-cn);margin-bottom:6px}
.empty-subtitle{font-size:14px;color:var(--c-text-d);font-family:var(--font-cn)}

.rinui-btn{display:inline-flex;align-items:center;gap:4px;padding:7px 14px;border:0;border-radius:6px;font-size:13px;font-family:var(--font-cn);font-weight:500;cursor:pointer;transition:all .15s;outline:0;white-space:nowrap;text-decoration:none}
.rinui-btn.flat{background:0;color:var(--c-text-r)}.rinui-btn.flat:hover{background:rgba(255,255,255,.06);color:var(--c-text)}
.rinui-btn.primary{background:var(--c-active);color:var(--c-text)}.rinui-btn.primary:hover{background:#1a4a80;box-shadow:0 4px 12px rgba(15,52,96,.5)}
.rinui-btn.danger{background:rgba(244,67,54,.85);color:#fff}.rinui-btn.danger:hover{background:rgba(244,67,54,1);box-shadow:0 4px 12px rgba(244,67,54,.4)}
.rinui-btn.small{padding:4px 10px;font-size:11px}
.view-toggle{font-size:15px;padding:5px 10px;border-radius:4px}.view-toggle.active{background:var(--c-active);color:var(--c-text)}

.rinui-statusbar{display:flex;align-items:center;justify-content:space-between;height:24px;min-height:24px;padding:0 12px;background:var(--c-statbar);border-top:1px solid var(--c-border);font-size:11px;font-family:var(--font-mono);color:var(--c-text-st);gap:16px}
.statusbar-center{flex:1;text-align:center}

.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);display:flex;justify-content:center;align-items:center;z-index:200;animation:fadeIn .2s;backdrop-filter:blur(6px)}
.modal-content{background:rgba(22,33,62,.97);border:1px solid var(--c-border);border-radius:12px;width:92%;max-width:680px;max-height:90vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.6);animation:modalIn .3s cubic-bezier(.175,.885,.32,1.275)}
.modal-detail{max-width:720px}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes modalIn{from{opacity:0;transform:translateY(-30px) scale(.94)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;border-bottom:1px solid var(--c-border);background:var(--c-topbar)}
.modal-header h3{color:var(--c-text);font-size:17px;font-weight:700;font-family:var(--font-cn)}
.modal-close{background:0;border:0;color:var(--c-text-m);font-size:24px;cursor:pointer;transition:all .2s;line-height:1}.modal-close:hover{color:var(--c-red);transform:rotate(90deg)}
.modal-body{padding:20px 22px;overflow-y:auto;flex:1}
.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:14px 22px;border-top:1px solid var(--c-border);background:rgba(15,15,35,.5)}

.form-field{margin-bottom:16px}.form-field label{display:block;color:var(--c-text-r);font-size:12px;font-weight:500;font-family:var(--font-cn);margin-bottom:5px}
.form-row{display:flex;gap:14px}
.form-field input,.form-field textarea,.form-field select{width:100%;padding:9px 12px;background:rgba(15,15,35,.6);border:1px solid var(--c-border);border-radius:7px;color:var(--c-text);font-size:14px;font-family:var(--font-cn);outline:0;transition:all .2s}
.form-field select{cursor:pointer}.form-field select option{background:#16213e;color:var(--c-text-r)}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{border-color:var(--c-active);box-shadow:0 0 0 3px rgba(15,52,96,.25);background:rgba(15,15,35,.8)}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--c-text-d)}
.form-field textarea{resize:vertical;min-height:140px;font-size:13px;line-height:1.7;font-family:var(--font-mono)}
.category-input-row{display:flex;gap:4px}.category-input-row select{flex:1}

.editor-toolbar{display:flex;align-items:center;gap:2px;padding:6px 8px;background:rgba(15,15,35,.5);border:1px solid var(--c-border);border-bottom:0;border-radius:7px 7px 0 0}
.tool-btn{background:0;border:0;border-radius:4px;color:var(--c-text-r);font-size:13px;font-family:var(--font-mono);padding:4px 8px;cursor:pointer;transition:all .15s}.tool-btn:hover{background:rgba(255,255,255,.08);color:var(--c-text)}
.tool-spacer{flex:1}
.editor-toolbar+textarea{border-radius:0 0 7px 7px}

.content-preview{min-height:140px;max-height:350px;overflow-y:auto;padding:14px;background:rgba(15,15,35,.4);border:1px solid var(--c-border);border-radius:7px;color:var(--c-text-r);font-size:14px;line-height:1.8;font-family:var(--font-cn)}
.content-preview h1,.content-preview h2,.content-preview h3{color:var(--c-text);margin:12px 0 8px}
.content-preview h1{font-size:20px;border-bottom:1px solid var(--c-border);padding-bottom:6px}
.content-preview h2{font-size:17px}.content-preview h3{font-size:15px}
.content-preview p{margin-bottom:10px}.content-preview ul,.content-preview ol{margin:8px 0;padding-left:24px}.content-preview li{margin-bottom:4px}
.content-preview code{background:rgba(15,52,96,.5);padding:2px 6px;border-radius:4px;font-family:var(--font-mono);font-size:12px;color:var(--c-tag)}
.content-preview pre{background:rgba(10,10,26,.6);border:1px solid var(--c-border);border-radius:6px;padding:12px;overflow-x:auto;margin:10px 0}
.content-preview pre code{background:0;padding:0;color:var(--c-text-r)}
.content-preview a{color:var(--c-tag)}.content-preview strong{color:var(--c-text)}
.content-preview blockquote{border-left:3px solid var(--c-active);padding-left:12px;color:var(--c-text-s);margin:10px 0}

.char-count{display:block;text-align:right;color:var(--c-text-d);font-size:11px;margin-top:4px;font-family:var(--font-mono)}
.char-count.warning{color:#ffd700}.char-count.danger{color:var(--c-red)}

.detail-header{position:sticky;top:0;z-index:10}.detail-header h3{font-size:18px;line-height:1.4;padding-right:8px}
.detail-meta{color:var(--c-text-m);font-size:12px;margin-bottom:18px;font-family:var(--font-mono)}
.detail-text{color:var(--c-text-r);font-size:15px;line-height:1.9;word-break:break-word}
.detail-text p{margin-bottom:14px}
.detail-tags{margin-top:20px;padding-top:16px;border-top:1px solid var(--c-border);display:flex;flex-wrap:wrap;gap:6px}
.detail-tags:empty{display:none}
.detail-footer{display:flex;justify-content:space-between;align-items:center}

.toast-container{position:fixed;top:60px;left:50%;transform:translateX(-50%);z-index:999;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast-item{pointer-events:auto;padding:12px 24px;border-radius:8px;font-size:14px;font-weight:500;font-family:var(--font-cn);color:#fff;backdrop-filter:blur(15px);animation:toastIn .35s cubic-bezier(.175,.885,.32,1.275) forwards;box-shadow:0 8px 30px rgba(0,0,0,.5);white-space:nowrap}
.toast-success{background:rgba(46,125,50,.9);border:1px solid rgba(76,175,80,.4)}
.toast-error{background:rgba(198,40,40,.9);border:1px solid rgba(244,67,54,.4)}
.toast-info{background:rgba(21,101,192,.9);border:1px solid rgba(33,150,243,.4)}
@keyframes toastIn{from{opacity:0;transform:translateY(-30px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes toastOut{from{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-30px) scale(.9)}}

.rinui-content::-webkit-scrollbar,.rinui-sidebar::-webkit-scrollbar,.modal-body::-webkit-scrollbar,.content-preview::-webkit-scrollbar{width:5px}
.rinui-content::-webkit-scrollbar-thumb,.rinui-sidebar::-webkit-scrollbar-thumb,.modal-body::-webkit-scrollbar-thumb,.content-preview::-webkit-scrollbar-thumb{background:var(--c-border-h);border-radius:3px}
.rinui-content::-webkit-scrollbar-track,.rinui-sidebar::-webkit-scrollbar-track,.modal-body::-webkit-scrollbar-track,.content-preview::-webkit-scrollbar-track{background:0}

@media(max-width:768px){
.rinui-sidebar{width:100%;min-width:100%;height:auto;flex-direction:row;flex-wrap:wrap;padding:6px;gap:4px;overflow-y:visible;border-right:0;border-bottom:1px solid var(--c-border)}
.sidebar-label,.sidebar-spacer,.sidebar-footer,.tag-cloud,.category-list,.btn-count{display:none}
.sidebar-btn{width:auto;flex:0 0 auto;height:32px;padding:0 12px;font-size:12px}
.rinui-main{flex-direction:column}.rinui-content{padding:14px}
.topbar-subtitle{display:none}.topbar-search{max-width:200px}
.note-grid{grid-template-columns:1fr}
.form-row{flex-direction:column;gap:0}
.modal-detail{max-width:96%;max-height:94vh}
}
@media(max-width:480px){
.rinui-topbar{padding:0 8px;gap:8px}.topbar-title{font-size:15px}.topbar-search{max-width:140px}
.topbar-right{gap:2px}.topbar-stat{font-size:11px}.rinui-btn{padding:5px 10px;font-size:11px}
.note-card{padding:14px}.card-title{font-size:14px}
.modal-detail{max-width:100%;width:100%;height:100%;max-height:100vh;border-radius:0}
}