.main-page-header{z-index:110;background:var(--bg-2);border:2px solid var(--primary);box-shadow:none;background-clip:padding-box;border-radius:14px;margin:8px 10px 0;padding:10px 12px;position:sticky;top:0}.main-page-header-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.main-page-header-left,.main-page-header-right{align-items:center;gap:8px;display:flex}.main-page-header-title{font-size:var(--font-size-h2);color:var(--text-1);margin:0;font-weight:700;line-height:1.2}.main-page-header-subtitle{color:var(--text-1);font-size:var(--font-size-caption);margin:0}.main-page-header .profile-name{color:var(--text-1)}.main-page-header .profile-placeholder{background:var(--accent-2);color:var(--text-1);border-color:var(--primary)}.main-page-header .login-button,.main-page-header .btn-icon,.main-page-header .header-btn{background:var(--accent-2);color:var(--text-1);border:1px solid var(--primary)}.main-page-header .login-button:hover,.main-page-header .btn-icon:hover,.main-page-header .header-btn:hover{background:var(--bg-2)}.main-page-header.main-page-header--search{flex-direction:column;gap:10px;display:flex}.main-page-header.main-page-header--search .search-bar{background:color-mix(in srgb,var(--bg-2)95%,transparent);border-color:color-mix(in srgb,var(--bg-2)60%,var(--alternative))}@media (max-width:768px){.main-page-header{border-radius:12px;margin:8px 8px 0;padding:10px}}.chat-page-header .chat-header-right{justify-content:flex-end;gap:6px;width:60%;max-width:60%;overflow:hidden}.chat-page-header .chat-header-search{opacity:0;width:0;transition:width .22s,opacity .18s;overflow:hidden}.chat-page-header .chat-header-search.open{opacity:1;width:100%}.chat-page-header .chat-header-search-shell{background:var(--bg-1);border:2px solid var(--alternative);border-radius:12px;align-items:center;gap:8px;padding:8px 12px;transition:border-color .2s;display:flex}.chat-page-header .chat-header-search-shell:focus-within{border-color:var(--primary)}.chat-page-header .chat-header-search-input{width:100%;color:var(--text-1);background:0 0;border:none;outline:none;font-size:16px}.chat-page-header .chat-header-search-input::placeholder{color:var(--text-2);opacity:.6}.chat-page-header .chat-header-search-icon-btn,.chat-page-header .chat-header-search-trigger{color:var(--text-2);cursor:pointer;background:0 0;border:none;padding:4px;font-size:18px;transition:color .2s}.chat-page-header .chat-header-search-icon-btn:hover,.chat-page-header .chat-header-search-trigger:hover{color:var(--primary)}.chat-page-header .chat-header-search-trigger{flex-shrink:0}