/* ============================================================
   برواز المعرفة v0.2.1 — app.css
   v0.2.1: خط النظام بدل Google Fonts — offline كامل
   System Arabic Font Stack:
   - Android: Noto Naskh Arabic / Roboto Arabic
   - iOS/macOS: Geeza Pro / Helvetica Neue Arabic
   - Windows: Segoe UI / Tahoma
   - Fallback: sans-serif
   ============================================================ */

/* تعريف المتغير المركزي للخط */
:root {
  --font-arabic: 'Segoe UI', 'Noto Naskh Arabic', 'Geeza Pro',
                 'Droid Arabic Naskh', Tahoma, Arial, sans-serif;
}

/* style block 1 */

:root{--purple:#3C3489;--purple-light:#534AB7;--purple-bg:#EEEDFE;--purple-text:#26215C;--amber-bg:#FAEEDA;--amber-text:#633806;--teal-bg:#E1F5EE;--teal-text:#085041;--blue-bg:#E6F1FB;--blue-text:#0C447C;--coral-bg:#FAECE7;--coral-text:#712B13;--pink-bg:#FBEAF0;--pink-text:#72243E;--gray-bg:#F1EFE8;--gray-text:#444441;--bg:#F5F4F0;--surface:#fff;--border:rgba(0,0,0,.1);--text:#1a1a1a;--text-2:#666;--text-3:#999;--radius:14px;--radius-sm:8px}
@media(prefers-color-scheme:dark){:root{--bg:#111;--surface:#1c1c1e;--border:rgba(255,255,255,.12);--text:#f0f0f0;--text-2:#aaa;--text-3:#666;--purple-bg:#26215C;--purple-text:#CECBF6;--amber-bg:#412402;--amber-text:#FAC775;--teal-bg:#04342C;--teal-text:#9FE1CB;--blue-bg:#042C53;--blue-text:#B5D4F4;--coral-bg:#4A1B0C;--coral-text:#F5C4B3;--pink-bg:#4B1528;--pink-text:#F4C0D1;--gray-bg:#2C2C2A;--gray-text:#D3D1C7}}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{height:100%;overflow:hidden}body{font-family:var(--font-arabic);background:var(--bg);color:var(--text);font-size:16px}.screen{position:fixed;inset:0;display:flex;flex-direction:column;background:var(--bg);transition:transform .25s}.screen.hidden{transform:translateX(-100%);pointer-events:none}.screen.slide-right{transform:translateX(100%);pointer-events:none}.topbar{background:var(--surface);border-bottom:.5px solid var(--border);padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top));display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:10}.topbar-logo{width:34px;height:34px;background:var(--purple);border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.topbar-logo svg{width:18px;height:18px;fill:#EEEDFE}.topbar-title{font-size:17px;font-weight:700;flex:1}.topbar-sub{font-size:12px;color:var(--text-3)}.icon-btn{width:36px;height:36px;border-radius:50%;border:none;background:var(--bg);cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-2);flex-shrink:0}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:16px;padding-bottom:105px}.bottomnav{position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-top:.5px solid var(--border);display:flex;padding-bottom:env(safe-area-inset-bottom);z-index:20}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 4px;cursor:pointer;border:none;background:none;color:var(--text-3);font-family:var(--font-arabic);font-size:11px}.nav-item.active{color:var(--purple)}.nav-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav-center{width:52px;height:52px;background:var(--purple);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:-20px;border:3px solid var(--bg);box-shadow:0 2px 12px rgba(60,52,137,.3);cursor:pointer;flex-shrink:0}.nav-center svg{width:24px;height:24px;stroke:white;fill:none;stroke-width:2;stroke-linecap:round}.card,.box{background:var(--surface);border-radius:var(--radius);border:.5px solid var(--border);padding:14px;margin-bottom:10px}.card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.type-badge{font-size:12px;font-weight:500;padding:3px 10px;border-radius:20px}.card-source{font-size:12px;color:var(--text-3);max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-body{font-size:15px;line-height:1.65;margin-bottom:10px}.card-title{font-weight:700;margin-bottom:5px}.meta-row,.card-index{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0;font-size:12px;color:var(--text-2)}.meta-row span,.card-index span,.tag{background:var(--bg);border:.5px solid var(--border);border-radius:20px;padding:2px 8px}.card-tags{display:flex;flex-wrap:wrap;gap:5px}.tag{font-size:11px;color:var(--text-2)}.card-date{font-size:11px;color:var(--text-3);margin-top:8px}.card-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.small-action,.classify-btn{padding:7px 12px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--bg);color:var(--text);font-family:var(--font-arabic);font-size:12px;cursor:pointer}.small-action.primary,.classify-btn.primary{background:var(--purple);color:white;border-color:var(--purple)}.small-action.danger{color:#b3261e}.small-action.star{color:#B47A17}.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:14px;scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{padding:6px 14px;border-radius:20px;border:.5px solid var(--border);background:var(--surface);font-family:var(--font-arabic);font-size:13px;color:var(--text-2);cursor:pointer;white-space:nowrap;flex-shrink:0}.chip.active{background:var(--purple-bg);color:var(--purple-text);border-color:transparent;font-weight:500}.empty{text-align:center;padding:55px 20px;color:var(--text-3)}.empty p{font-size:15px;margin-bottom:6px}.empty small{font-size:13px}.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:100;display:flex;flex-direction:column;justify-content:flex-end}.modal-bg.hidden{display:none}.modal-sheet{background:var(--surface);border-radius:20px 20px 0 0;padding:20px 20px 0;padding-bottom:max(20px,env(safe-area-inset-bottom));max-height:92vh;overflow-y:auto}.modal-handle{width:36px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 16px}.modal-title{font-size:17px;font-weight:700;margin-bottom:16px}.form-label{font-size:13px;color:var(--text-2);margin-bottom:6px;display:block}.form-input,.form-textarea,.form-select{width:100%;padding:11px 13px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--bg);font-family:var(--font-arabic);font-size:15px;color:var(--text);outline:none;margin-bottom:14px}.form-textarea{min-height:90px;resize:vertical;line-height:1.6}.type-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}.type-opt{padding:10px 4px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--bg);text-align:center;cursor:pointer;font-family:var(--font-arabic);font-size:12px;color:var(--text-2)}.type-opt.active{background:var(--purple-bg);color:var(--purple-text);border-color:var(--purple-light);font-weight:500}.type-opt span{display:block;font-size:20px;margin-bottom:3px}.save-btn{width:100%;padding:14px;background:var(--purple);color:white;border:none;border-radius:var(--radius);font-family:var(--font-arabic);font-size:16px;font-weight:700;cursor:pointer;margin-bottom:16px}.toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:#1a1a1a;color:white;padding:10px 20px;border-radius:20px;font-size:14px;z-index:200;opacity:0;transition:opacity .3s;pointer-events:none;white-space:nowrap}.toast.show{opacity:1}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}.stat-card{background:var(--surface);border-radius:var(--radius-sm);border:.5px solid var(--border);padding:12px 6px;text-align:center}.stat-num{font-size:21px;font-weight:700;color:var(--purple)}.stat-lbl{font-size:10px;color:var(--text-3);margin-top:2px}.inbox-badge{background:var(--amber-bg);color:var(--amber-text);font-size:11px;font-weight:700;padding:1px 7px;border-radius:20px;margin-right:4px}.install-banner{background:var(--purple-bg);border-radius:var(--radius);padding:12px 14px;margin-bottom:14px;display:flex;align-items:center;gap:10px}.install-banner p{font-size:13px;color:var(--purple-text);flex:1;line-height:1.5}.install-banner button{background:var(--purple);color:white;border:none;border-radius:var(--radius-sm);padding:7px 12px;font-family:var(--font-arabic);font-size:13px;font-weight:500}.section-hd{font-size:13px;font-weight:700;color:var(--text-2);margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}.profile-card{text-align:center;padding:22px}.avatar{width:64px;height:64px;border-radius:20px;background:var(--purple);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;margin-bottom:10px}.file-input{display:none}.two{display:grid;grid-template-columns:1fr 1fr;gap:8px}.search-field{width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--surface);font-family:var(--font-arabic);font-size:15px;color:var(--text);outline:none;margin-bottom:12px}

.quick-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}.quick-tool{background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius);padding:13px 8px;text-align:center;cursor:pointer;color:var(--text);font-family:var(--font-arabic)}.quick-tool b{display:block;font-size:14px;margin-top:4px}.quick-tool span{font-size:22px}.study-card{background:var(--surface);border:.5px solid var(--border);border-radius:20px;padding:22px;margin:12px 0;min-height:210px;display:flex;flex-direction:column;justify-content:center;text-align:center;line-height:1.8}.study-type{font-size:13px;color:var(--text-2);margin-bottom:10px}.study-content{font-size:20px;font-weight:500}.study-meta{font-size:12px;color:var(--text-3);margin-top:14px}.recall-item{border-right:3px solid var(--purple);padding-right:10px}.tree-node{background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius-sm);padding:10px;margin:8px 0}.tree-title{font-weight:700}.tree-child{margin:6px 16px 0 0;padding:8px;border-radius:var(--radius-sm);background:var(--bg);font-size:13px;color:var(--text-2)}.modal-title-row{display:flex;align-items:center;gap:10px;margin-bottom:16px}.modal-title-row .modal-title{margin-bottom:0;flex:1}.capture-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}.capture-tools button{padding:10px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--bg);color:var(--text);font-family:var(--font-arabic);font-size:13px;cursor:pointer}.capture-label{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:10px;border-radius:var(--radius-sm);border:.5px solid var(--border);background:var(--bg);color:var(--text);font-family:var(--font-arabic);font-size:13px;cursor:pointer;min-height:64px}.capture-label b{font-size:13px}.capture-label small{font-size:10px;color:var(--text-3)}.attachment-preview{margin:10px 0;border-radius:var(--radius-sm);overflow:hidden;border:.5px solid var(--border);background:var(--bg)}.attachment-preview img{width:100%;display:block;max-height:260px;object-fit:contain;background:#000}.pdf-note{font-size:12px;color:var(--text-2);line-height:1.6;margin:-6px 0 12px}.progress-box{display:none;background:var(--blue-bg);color:var(--blue-text);border-radius:var(--radius-sm);padding:9px 10px;font-size:13px;line-height:1.6;margin-bottom:12px}.progress-box.show{display:block}.principles-list{display:grid;gap:8px;margin-top:8px}.principle{display:flex;gap:8px;align-items:flex-start;background:var(--bg);border:.5px solid var(--border);border-radius:var(--radius-sm);padding:9px 10px;font-size:13px;line-height:1.6;color:var(--text-2)}.principle b{color:var(--text)}.mode-card{background:linear-gradient(135deg,var(--purple-bg),var(--surface));border:.5px solid var(--border);border-radius:var(--radius);padding:13px 14px;margin-bottom:14px;line-height:1.65}.mode-card b{display:block;color:var(--purple-text);font-size:14px;margin-bottom:3px}.mode-card small{color:var(--text-2);font-size:12px}#print-area{display:none}
.mode-architecture-grid{display:grid;gap:10px}.mode-architecture-card{background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius);padding:13px}.mode-architecture-title{font-weight:700;margin-bottom:8px;color:var(--purple)}.mode-tools{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}.mode-tool-btn{border:.5px solid var(--border);background:var(--bg);border-radius:var(--radius-sm);padding:9px 8px;font-family:var(--font-arabic);font-size:12px;color:var(--text);text-align:right;cursor:pointer}.mode-tool-btn.future{opacity:.45;background:var(--gray-bg);color:var(--gray-text);cursor:not-allowed}.mode-tool-btn small{display:block;color:var(--text-3);font-size:10px;margin-top:2px}.index-grid{display:grid;gap:10px}.index-card{background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius);padding:12px;cursor:pointer}.index-card b{display:block;margin-bottom:5px;color:var(--purple)}.index-result{margin-top:10px}.knowledge-note{background:var(--purple-bg);color:var(--purple-text);border-radius:var(--radius);padding:12px;line-height:1.7;font-size:13px;margin-bottom:12px}
@media print{body>*:not(#print-area){display:none!important}#print-area{display:block!important;direction:rtl;font-family:Arial,sans-serif;color:#111}.print-card{border:1px solid #ddd;border-radius:10px;padding:14px;margin:12px 0;page-break-inside:avoid}.print-body{white-space:pre-wrap;line-height:1.8}.print-meta{color:#666;font-size:12px;margin:5px 0}}


/* style block 2 */

.mode-tools{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px}.mode-tool{border:.5px solid var(--border);border-radius:12px;background:var(--surface);padding:9px 8px;text-align:center;font-size:12px;line-height:1.45;color:var(--text);cursor:pointer}.mode-tool b{display:block;font-size:13px;color:var(--purple-text);margin-bottom:2px}.mode-tool.disabled{opacity:.55;filter:grayscale(.2)}.mode-pill{display:inline-flex;align-items:center;gap:4px;background:var(--bg);border:.5px solid var(--border);border-radius:20px;padding:3px 8px;font-size:11px;color:var(--text-2);margin:2px}.knowledge-map{background:var(--surface);border:.5px solid var(--border);border-radius:18px;padding:14px;margin-bottom:12px}.map-core{width:132px;height:132px;margin:10px auto;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--purple-light));color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:700;line-height:1.5;box-shadow:0 8px 22px rgba(60,52,137,.25)}.map-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px}.map-node{border:.5px solid var(--border);border-radius:14px;background:var(--bg);padding:10px;font-size:12px;line-height:1.6}.map-node b{display:block;font-size:13px;margin-bottom:3px;color:var(--text)}.pdf-debug{font-size:11px;color:var(--text-3);margin-top:6px}.tree-node{background:var(--surface);border:.5px solid var(--border);border-radius:16px;padding:12px;margin-bottom:10px}.tree-title{font-weight:700;margin-bottom:8px}.tree-child{border-right:3px solid var(--purple-light);padding:6px 10px;margin:4px 0;background:var(--bg);border-radius:10px;font-size:13px;line-height:1.55}@media(min-width:650px){.mode-tools{grid-template-columns:repeat(3,1fr)}.map-grid{grid-template-columns:repeat(4,1fr)}}

/* V26: PDF text reader + richer modes + live knowledge map */
.reader-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}.reader-tools button{padding:10px;border-radius:14px;border:.5px solid var(--border);background:var(--surface);font-family:var(--font-arabic);color:var(--text);font-size:13px}.reader-box{background:var(--surface);border:.5px solid var(--border);border-radius:18px;padding:16px;line-height:2.05;font-size:18px;white-space:pre-wrap;user-select:text;-webkit-user-select:text;min-height:60vh}.reader-box::selection{background:#fde68a;color:#111}.reader-note{background:var(--amber-bg);color:var(--amber-text);border-radius:14px;padding:10px 12px;font-size:13px;line-height:1.7;margin-bottom:12px}.mode-section{margin:12px 0}.mode-section-title{font-size:13px;font-weight:700;color:var(--text-2);margin-bottom:8px}.mode-tools .disabled{opacity:.55}.mode-template{border-right:3px solid var(--purple);background:var(--bg);border-radius:12px;padding:8px;margin:5px 0;font-size:12px;line-height:1.5}.km-lanes{display:grid;grid-template-columns:1fr;gap:10px;margin-top:10px}.km-lane{background:var(--bg);border:.5px solid var(--border);border-radius:14px;padding:10px}.km-lane b{display:block;margin-bottom:6px}.km-rel{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-2);margin:5px 0}.km-dot{width:8px;height:8px;border-radius:50%;background:var(--purple)}@media(min-width:650px){.km-lanes{grid-template-columns:repeat(3,1fr)}}


/* style block 3 */

/* V29: Knowledge Flow / Linking Engine */
.kflow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0}.kflow-step{background:var(--surface);border:.5px solid var(--border);border-radius:16px;padding:11px 8px;text-align:center;font-size:12px;color:var(--text-2)}.kflow-step b{display:block;color:var(--text);font-size:13px;margin-top:4px}.relation-box{background:linear-gradient(135deg,var(--blue-bg),var(--surface));border:.5px solid var(--border);border-radius:18px;padding:12px;margin:10px 0}.relation-list{display:grid;gap:8px}.relation-item{background:var(--surface);border:.5px solid var(--border);border-radius:14px;padding:10px;cursor:pointer}.relation-item b{display:block;margin-bottom:5px}.relation-score{font-size:11px;color:var(--text-3)}.map-board{display:grid;grid-template-columns:1fr;gap:10px}.map-column{background:var(--surface);border:.5px solid var(--border);border-radius:18px;padding:12px}.map-column h4{margin:0 0 10px}.map-chip{display:block;background:var(--bg);border:.5px solid var(--border);border-radius:12px;padding:8px;margin:6px 0;font-size:13px;cursor:pointer}.export-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px}.export-grid button{padding:12px;border-radius:14px;border:.5px solid var(--border);background:var(--surface);font-family:var(--font-arabic);color:var(--text);font-size:13px}.export-output{width:100%;min-height:280px;background:var(--surface);border:.5px solid var(--border);border-radius:16px;padding:12px;font-family:var(--font-arabic);line-height:1.8;direction:rtl;color:var(--text);box-sizing:border-box}.tree-branch{background:var(--surface);border:.5px solid var(--border);border-radius:18px;padding:12px;margin:10px 0}.tree-branch-title{font-weight:800;margin-bottom:8px;color:var(--purple-text)}.tree-leaf{background:var(--bg);border-right:3px solid var(--purple);border-radius:12px;padding:8px 10px;margin:6px 0;font-size:13px}.study-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.study-actions button{border:0;border-radius:14px;padding:11px 6px;font-family:var(--font-arabic)}.study-good{background:var(--green-bg);color:var(--green-text)}.study-mid{background:var(--amber-bg);color:var(--amber-text)}.study-bad{background:var(--red-bg);color:var(--red-text)}@media(min-width:700px){.map-board{grid-template-columns:repeat(3,1fr)}.kflow-grid{grid-template-columns:repeat(6,1fr)}}


/* style block 4 */

/* V39 relation and offline architecture */
.relation-section{background:var(--surface);border:.5px solid var(--border);border-radius:16px;padding:12px;margin:10px 0}.relation-section .relation-item{margin-top:8px}.v39-rel-btn{background:var(--purple-bg)!important;color:var(--purple-text)!important}.modal-title-row{display:flex;align-items:center;gap:10px}.principle{display:flex;gap:10px;align-items:flex-start;margin:8px 0}.principle span{font-size:22px}.principles-list{font-size:13px;line-height:1.7}.mode-tool.disabled,.ai-disabled{opacity:.45;filter:grayscale(1);}