/* «ورق» — هوية ثالثة: تحريرية، دافئة، نسخية، خطوط رفيعة بدل الظلال. */
:root{
  --paper:#F6F1E6; --paper-2:#FBF7EF; --ink:#221D18; --muted:#6D6155; --faint:#96897A;
  --accent:#A64B2A; --accent-soft:#F0DDD0; --line:#DCD1BE; --line-2:#C9BBA3;
  --ok:#4E6B3E; --warn:#9A6B1E;
  --font-body:'IBM Plex Sans Arabic',system-ui,sans-serif;
  --font-head:'Noto Naskh Arabic',serif;
  --font-mono:'JetBrains Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font-body); font-weight:300; font-size:15px; line-height:1.8; color:var(--ink);
  background:var(--paper); -webkit-font-smoothing:antialiased; min-height:100vh;
  background-image:
    radial-gradient(1200px 500px at 100% 0%, #FBF4E7 0%, transparent 55%),
    radial-gradient(800px 400px at 0% 100%, #F1E9DA 0%, transparent 60%);
}
h1,h2,h3{font-family:var(--font-head); font-weight:600; margin:0; line-height:1.4}
h2{font-size:26px} h3{font-size:16px}
p{margin:0}
button{font-family:inherit; font-size:inherit; color:inherit; cursor:pointer}
.mono{font-family:var(--font-mono); font-size:11.5px; color:var(--muted)}
.ltr{direction:ltr; unicode-bidi:embed}
.ico{display:inline-block; vertical-align:-3px; stroke-width:1.6; flex:0 0 auto}

.shell{display:grid; grid-template-columns:228px minmax(0,1fr); min-height:100vh}

/* عمود العنوان */
.rail{
  position:sticky; top:0; height:100vh; padding:34px 22px; display:flex; flex-direction:column; gap:26px;
  border-inline-end:1px solid var(--line);
}
.brand{display:flex; flex-direction:column; gap:8px}
.mark{display:none}
.brand-text{display:flex; flex-direction:column; gap:2px}
.brand-text b{font-family:var(--font-head); font-size:24px; font-weight:700; letter-spacing:-.01em}
.brand-text small{font-size:11.5px; color:var(--faint); letter-spacing:.02em}
.nav{display:flex; flex-direction:column; gap:0; border-top:1px solid var(--line)}
.nav-btn{
  display:flex; align-items:center; gap:9px; padding:11px 2px; border:0; border-bottom:1px solid var(--line);
  background:transparent; color:var(--muted); text-align:start; font-size:13.5px; font-weight:400;
  transition:color .18s ease, padding .18s ease;
}
.nav-btn:hover{color:var(--ink); padding-inline-start:6px}
.nav-btn.is-active{color:var(--accent); font-weight:500}
.nav-btn.is-active span{text-decoration:underline; text-underline-offset:5px; text-decoration-thickness:1px}
.rail-foot{margin-top:auto; display:flex; flex-direction:column; gap:5px; padding-top:16px; border-top:1px solid var(--line)}
.schema{font-family:var(--font-mono); font-size:10.5px; color:var(--faint); direction:ltr; letter-spacing:.02em}
.main{min-width:0; display:flex; flex-direction:column}
.topbar{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:22px 44px 14px; border-bottom:2px solid var(--ink);
}
.crumb{display:flex; align-items:center; gap:8px; font-size:11.5px; color:var(--faint); letter-spacing:.04em}
.crumb b{color:var(--ink); font-weight:500}
.tools{display:flex; align-items:center; gap:10px}
.search{
  display:flex; align-items:center; gap:7px; height:34px; padding:0 2px; min-width:250px;
  border-bottom:1px solid var(--line-2); color:var(--faint); transition:border-color .2s ease;
}
.search:focus-within{border-color:var(--accent)}
.search input{
  border:0; outline:0; background:transparent; width:100%; color:var(--ink);
  font-family:inherit; font-size:13px; font-weight:300;
}
.search input::placeholder{color:var(--faint); font-style:italic}
.btn{
  display:inline-flex; align-items:center; gap:6px; height:33px; padding:0 12px;
  border:1px solid var(--line-2); background:transparent; color:var(--ink); border-radius:2px;
  font-size:12.5px; font-weight:400; transition:all .18s ease;
}
.btn:hover{background:var(--paper-2); border-color:var(--ink)}
.btn-primary{background:var(--accent); border-color:var(--accent); color:#FCF6EE}
.btn-primary:hover{background:#8E3E21; border-color:#8E3E21}
.btn-quiet{border-color:transparent; color:var(--muted)}
.btn[disabled]{opacity:.4; cursor:not-allowed}

.views{padding:30px 44px 56px; max-width:1180px}
.view{display:none}
.view.is-active{display:block; animation:rise .5s cubic-bezier(.22,.8,.3,1) both}
@keyframes rise{from{opacity:0; transform:translateY(8px)}to{opacity:1; transform:none}}

/* أرقام تحريرية بدل البطاقات */
.stats{display:flex; flex-wrap:wrap; gap:36px; padding-bottom:26px; margin-bottom:6px}
.stat{display:flex; flex-direction:column; gap:0; min-width:120px}
.stat-k{font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--faint)}
.stat-v{font-family:var(--font-head); font-size:34px; font-weight:600; line-height:1.2}
.stat-s{font-size:11.5px; color:var(--muted); font-style:italic}

.split{display:grid; grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr); gap:34px; align-items:start}
.panel{background:transparent; border:0; border-top:1px solid var(--ink); border-radius:0; padding-top:0}
.panel-head{
  display:flex; align-items:baseline; justify-content:space-between; gap:12px; flex-wrap:wrap;
  padding:12px 0 12px; border-bottom:1px solid var(--line);
}
.panel-head h3{font-family:var(--font-head); font-size:15px; font-weight:600; letter-spacing:.01em}
.hint{font-size:11px; color:var(--faint); font-style:italic}
.eyebrow{display:block; font-size:10.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--accent); margin-bottom:8px}
.detail-panel{border-top:1px solid var(--ink); background:var(--paper-2); padding:0 22px 20px; border-radius:0 0 2px 2px}
.detail-panel .panel-head{border-bottom:1px solid var(--line)}

/* الشجرة كمخطط تحريري مرقّم */
.tree-wrap{padding:6px 0 10px; max-height:min(62vh,600px); overflow:auto}
.tree,.children{list-style:none; margin:0; padding:0}
.children{margin-inline-start:14px; padding-inline-start:10px; border-inline-start:1px solid var(--line)}
.node-row{
  display:flex; align-items:baseline; gap:10px; padding:7px 4px; cursor:pointer;
  border-bottom:1px dotted rgba(201,187,163,.55); transition:background .16s ease, padding .16s ease;
}
.node-row:hover{background:rgba(255,255,255,.55); padding-inline-start:9px}
.is-selected>.node-row{background:var(--accent-soft)}
.is-selected>.node-row .node-label{color:var(--accent); font-weight:500}
.twisty{
  border:0; background:transparent; color:var(--faint); padding:0; width:16px; display:inline-grid; place-items:center;
  transition:transform .2s ease, color .16s ease; align-self:center;
}
.twisty:hover{color:var(--accent)}
.twisty.is-open{transform:rotate(180deg)}
.dot{width:16px; display:inline-grid; place-items:center}
.dot::after{content:'·'; color:var(--faint); font-size:16px; line-height:1}
.num{font-family:var(--font-mono); font-size:11px; color:var(--faint); min-width:42px; direction:ltr; letter-spacing:.02em}
.node-label{flex:1; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:14.5px; font-weight:400}
.node-code{
  font-family:var(--font-mono); font-size:10px; color:#8B7C69; direction:ltr;
  max-width:170px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.node-count{font-family:var(--font-mono); font-size:10.5px; color:var(--muted)}

/* التفاصيل كمقالة جانبية */
.detail-title{display:flex; align-items:baseline; gap:10px; flex-wrap:wrap}
.detail-title h2{font-size:27px}
.detail-note{font-size:13.5px; color:var(--muted); margin-top:8px; font-weight:300; line-height:1.9}
.chip{
  display:inline-flex; align-items:center; gap:4px; font-size:10.5px; font-weight:500;
  padding:1px 7px; border:1px solid var(--line-2); border-radius:2px; color:var(--muted);
  background:transparent; letter-spacing:.02em;
}
.chip-ok{border-color:#A9BC98; color:var(--ok)}
.chip-muted{border-color:var(--line-2); color:var(--muted)}
.chip-warn{border-color:#D8B87A; color:var(--warn)}
.kv{margin:14px 0 0; padding:0}
.kv-row{display:flex; justify-content:space-between; gap:14px; padding:8px 0; border-bottom:1px dotted rgba(201,187,163,.8); font-size:13px}
.kv-row:last-child{border-bottom:0}
.kv dt{color:var(--faint); font-weight:300}
.kv dd{margin:0; text-align:end; max-width:62%; overflow:hidden; text-overflow:ellipsis}
.detail-actions{display:flex; flex-wrap:wrap; gap:8px; margin-top:18px}
.detail-actions .btn{height:30px; font-size:12px}
.add-row{display:flex; gap:8px; margin-top:12px}
.add-row input{
  flex:1; height:32px; padding:0 8px; border:0; border-bottom:1px solid var(--line-2);
  background:transparent; color:var(--ink); font-family:inherit; font-size:13px; outline:0;
}
.add-row input:focus{border-color:var(--accent)}
.add-row .btn{height:32px; font-size:12px}
.add-row[hidden]{display:none}

/* الجداول كصفحات كتاب */
.table-wrap{overflow:auto}
.matrix{width:100%; border-collapse:collapse; font-size:13px}
.matrix th{
  text-align:start; font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--faint);
  font-weight:500; padding:9px 12px; border-bottom:1px solid var(--ink);
}
.matrix td{padding:9px 12px; border-bottom:1px dotted rgba(201,187,163,.8); font-weight:300}
.matrix tbody tr:hover{background:rgba(255,255,255,.5)}
.matrix .num-col{width:58px; color:var(--faint)}
.leaf-name{font-weight:400}
.zero{color:#C9BBA3}
.matrix.compact th,.matrix.compact td{padding:7px 8px; font-size:12px}
.legend{display:flex; align-items:center; gap:10px; flex-wrap:wrap; padding:14px 0 0; border-top:1px solid var(--line); margin-top:10px}
.grid-2{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:34px; align-items:start}
.foot-note{font-size:12px; color:var(--muted); padding:14px 0 0; font-weight:300; line-height:1.9}
.import-bar{display:flex; gap:8px; flex-wrap:wrap; padding:14px 0 4px}
.import-report{
  margin-top:14px; padding:14px 16px; background:var(--paper-2); border:1px solid var(--line);
  border-inline-start:2px solid var(--accent); animation:rise .3s ease both;
}
.rep-row{display:flex; justify-content:space-between; padding:3px 0; font-size:13px; font-weight:300}
.rep-row .accent{color:var(--accent)}
.import-report p{margin:8px 0 0; font-size:11.5px; color:var(--faint); font-style:italic}

.toast{
  position:fixed; inset-block-end:24px; inset-inline-start:50%; transform:translate(50%,14px);
  background:var(--ink); color:var(--paper); padding:10px 18px; border-radius:2px;
  font-size:12.5px; font-weight:300; opacity:0; pointer-events:none;
  transition:all .22s ease; z-index:60; max-width:min(92vw,520px);
}
.toast.is-on{opacity:1; transform:translate(50%,0)}

@media (max-width:1100px){
  .split,.grid-2{grid-template-columns:minmax(0,1fr); gap:26px}
  .stats{gap:26px}
}
@media (max-width:820px){
  .shell{grid-template-columns:1fr}
  .rail{position:static; height:auto; padding:20px 18px 8px; border-inline-end:0; gap:16px}
  .nav{flex-direction:row; flex-wrap:wrap; border-top:0}
  .nav-btn{border-bottom:0; padding:8px 12px 8px 0}
  .rail-foot{display:none}
  .topbar{padding:16px 18px 12px}
  .views{padding:22px 18px 40px}
  .search{min-width:0; flex:1}
  .node-code{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important; transition:none!important}}