*{box-sizing:border-box;margin:0;padding:0}
    :root{
      --crust:#0e0b09;--surface:#141110;--card:#1c1814;
      --border:#2e2520;--border2:#3a302a;
      --ember:#e07b35;--ember2:#c96a20;
      --sand:#ede0cc;--sand2:#c8b8a2;
      --muted:#7a6a58;--muted2:#4a3c30;
    }
    html,body{background:var(--crust);color:var(--sand);font-family:'DM Sans',sans-serif;min-height:100vh;}
    a{text-decoration:none;color:inherit;}

    /* ── LAYOUT ── */
    .page-wrap{display:flex;min-height:100vh;}

    /* ── SIDEBAR ── */
    .sidebar{
      width:240px;min-width:240px;background:var(--surface);
      border-right:1px solid var(--border);height:100vh;
      position:sticky;top:0;display:flex;flex-direction:column;
      padding:28px 16px;overflow-y:auto;
    }
    .sidebar-logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.65rem;
      letter-spacing:-1.5px;color:var(--sand);padding:0 8px;margin-bottom:32px;}
    .sidebar-logo span{color:var(--ember);}
    .nav-label{font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;
      color:var(--muted2);padding:0 8px;margin:20px 0 8px;}
    .nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;
      color:var(--muted);font-size:.875rem;font-weight:500;cursor:pointer;
      transition:all .2s;position:relative;}
    .nav-item:hover{background:rgba(224,123,53,.09);color:var(--sand);}
    .nav-item.active{background:rgba(224,123,53,.14);color:var(--ember);}
    .nav-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
      width:3px;height:60%;background:var(--ember);border-radius:0 3px 3px 0;}
    .nav-item svg{width:18px;height:18px;flex-shrink:0;}
    .notif-dot{margin-left:auto;background:var(--ember);color:var(--crust);font-size:10px;
      font-weight:700;min-width:18px;height:18px;border-radius:9px;
      display:flex;align-items:center;justify-content:center;padding:0 4px;}

    /* ── CONTENT ── */
    .content{flex:1;padding:32px 24px;max-width:900px;margin:0 auto;width:100%;}

    /* ── SEARCH INPUT ── */
    .search-hero{margin-bottom:28px;}
    .search-title{font-family:'Syne',sans-serif;font-weight:800;font-size:1.6rem;
      color:var(--sand);margin-bottom:20px;letter-spacing:-.5px;}
    .search-title span{color:var(--ember);}
    .search-bar-wrap{
      display:flex;align-items:center;gap:12px;
      background:var(--card);border:1.5px solid var(--border2);
      border-radius:16px;padding:12px 18px;transition:all .25s;
    }
    .search-bar-wrap:focus-within{border-color:var(--ember);box-shadow:0 0 0 4px rgba(224,123,53,.1);}
    .search-bar-wrap svg{flex-shrink:0;color:var(--muted2);}
    #search-input{
      flex:1;background:transparent;border:none;outline:none;
      font-size:1.05rem;color:var(--sand);font-family:'DM Sans',sans-serif;caret-color:var(--ember);
    }
    #search-input::placeholder{color:var(--muted2);}
    #clear-btn{background:none;border:none;cursor:pointer;color:var(--muted);
      padding:4px;border-radius:6px;display:none;transition:color .15s;}
    #clear-btn:hover{color:var(--sand);}
    .ai-badge{
      display:inline-flex;align-items:center;gap:5px;
      background:rgba(224,123,53,.12);border:1px solid rgba(224,123,53,.25);
      border-radius:20px;padding:4px 10px;font-size:.72rem;font-weight:700;
      color:var(--ember);white-space:nowrap;flex-shrink:0;
    }

    /* ── FILTERS ── */
    .filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;}
    .filter-chip{
      padding:7px 16px;border-radius:20px;font-size:.8rem;font-weight:600;
      cursor:pointer;border:1px solid var(--border2);color:var(--muted);
      background:transparent;transition:all .2s;white-space:nowrap;
    }
    .filter-chip:hover{border-color:rgba(224,123,53,.3);color:var(--sand);}
    .filter-chip.active{background:var(--ember);border-color:var(--ember);color:var(--crust);}

    /* ── STATES ── */
    .search-stats{font-size:.82rem;color:var(--muted);margin-bottom:18px;
      padding-bottom:14px;border-bottom:1px solid var(--border);}
    .search-stats strong{color:var(--ember);}
    .empty-state{text-align:center;padding:60px 20px;}
    .empty-state .icon{font-size:3rem;margin-bottom:16px;}
    .empty-state h3{font-family:'Syne',sans-serif;font-size:1.1rem;color:var(--sand);margin-bottom:8px;}
    .empty-state p{font-size:.9rem;color:var(--muted);}
    .spinner-wrap{display:flex;align-items:center;justify-content:center;gap:12px;padding:48px;color:var(--muted);}
    .spinner{width:28px;height:28px;border:2.5px solid rgba(224,123,53,.15);border-top-color:var(--ember);
      border-radius:50%;animation:spin 1s linear infinite;}
    @keyframes spin{to{transform:rotate(360deg)}}

    /* ── RESULTS GRID ── */
    .results-grid{display:flex;flex-direction:column;gap:12px;}

    /* ── RESULT CARD ── */
    .result-card{
      background:var(--card);border:1px solid var(--border);border-radius:16px;
      padding:18px 20px;cursor:pointer;transition:all .22s;
      display:flex;gap:16px;align-items:flex-start;
    }
    .result-card:hover{border-color:rgba(224,123,53,.35);transform:translateY(-2px);
      box-shadow:0 8px 32px rgba(0,0,0,.4);}
    .result-avatar{width:44px;height:44px;border-radius:12px;object-fit:cover;
      flex-shrink:0;background:var(--border2);border:1.5px solid var(--border);}
    .result-avatar.challenge-icon{display:flex;align-items:center;justify-content:center;
      font-size:1.4rem;background:rgba(224,123,53,.1);border-color:rgba(224,123,53,.2);}
    .result-body{flex:1;min-width:0;}
    .result-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px;}
    .result-name{font-family:'Syne',sans-serif;font-weight:700;font-size:.92rem;color:var(--sand);
      overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
    .result-type-badge{
      flex-shrink:0;font-size:.65rem;font-weight:700;padding:3px 9px;border-radius:10px;
      text-transform:uppercase;letter-spacing:.5px;
    }
    .type-post{background:rgba(96,165,250,.12);color:#60a5fa;border:1px solid rgba(96,165,250,.2);}
    .type-project{background:rgba(224,123,53,.12);color:var(--ember);border:1px solid rgba(224,123,53,.2);}
    .type-user{background:rgba(34,197,94,.12);color:#22c55e;border:1px solid rgba(34,197,94,.2);}
    .type-challenge{background:rgba(239,68,68,.12);color:#ef4444;border:1px solid rgba(239,68,68,.2);}
    .result-meta{font-size:.76rem;color:var(--muted);margin-bottom:8px;}
    .result-snippet{font-size:.85rem;color:var(--sand2);line-height:1.6;
      display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
    .result-footer{display:flex;align-items:center;gap:14px;margin-top:10px;flex-wrap:wrap;}
    .result-stat{display:flex;align-items:center;gap:4px;font-size:.74rem;color:var(--muted);}
    .result-stat svg{width:13px;height:13px;stroke:var(--muted);}
    .result-diff-badge{font-size:.68rem;font-weight:700;padding:2px 8px;border-radius:8px;}
    .hl{background:rgba(224,123,53,.2);color:var(--ember);padding:1px 3px;border-radius:3px;font-weight:600;}

    /* ── HISTORY ── */
    .section-title{font-family:'Syne',sans-serif;font-weight:700;font-size:.9rem;
      color:var(--sand);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
    .history-section{margin-bottom:32px;}
    .history-list{display:flex;flex-direction:column;gap:4px;}
    .history-item{
      display:flex;align-items:center;gap:10px;padding:9px 12px;
      border-radius:10px;cursor:pointer;transition:background .15s;
      color:var(--sand2);font-size:.86rem;
    }
    .history-item:hover{background:rgba(255,255,255,.04);}
    .history-item svg{flex-shrink:0;color:var(--muted2);}
    .history-item-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
    .history-delete{
      background:none;border:none;cursor:pointer;padding:4px;border-radius:6px;
      color:var(--muted2);opacity:0;transition:opacity .15s,color .15s;flex-shrink:0;
    }
    .history-item:hover .history-delete{opacity:1;}
    .history-delete:hover{color:var(--ember);}
    .history-clear-btn{
      background:none;border:none;cursor:pointer;color:var(--muted);font-size:.76rem;
      padding:0;margin-left:auto;transition:color .15s;
    }
    .history-clear-btn:hover{color:var(--ember);}

    /* ── MOBILE ── */
    .mobile-header{display:none;padding:16px 16px 0;align-items:center;gap:14px;margin-bottom:20px;}
    .back-btn{display:flex;align-items:center;justify-content:center;width:38px;height:38px;
      background:var(--card);border:1px solid var(--border);border-radius:10px;cursor:pointer;
      color:var(--muted);transition:all .2s;flex-shrink:0;}
    .back-btn:hover{color:var(--sand);border-color:var(--border2);}

    @media(max-width:768px){
      .sidebar{display:none;}
      .content{padding:16px;max-width:100%;}
      .mobile-header{display:flex;}
      .search-title{font-size:1.2rem;margin-bottom:14px;}
      .result-card{padding:14px;}
    }