/* Claude web clone — design tokens извлечены из официального приложения (Claude.app, MainWindowPage.css) */

@font-face{
  font-family:'anthropic-sans';
  src:url('../assets/fonts/anthropic-sans-roman-ddvos-bj.woff2') format('woff2');
  font-weight:300 800;font-style:normal;font-display:swap;
}
@font-face{
  font-family:'anthropic-sans';
  src:url('../assets/fonts/anthropic-sans-italic-cjtkx3-s.woff2') format('woff2');
  font-weight:300 800;font-style:italic;font-display:swap;
}
@font-face{
  font-family:'anthropic-serif';
  src:url('../assets/fonts/anthropic-serif-roman-2vccjn5t.woff2') format('woff2');
  font-weight:300 800;font-style:normal;font-display:swap;
}
@font-face{
  font-family:'anthropic-serif';
  src:url('../assets/fonts/anthropic-serif-italic-dcb-9nus.woff2') format('woff2');
  font-weight:300 800;font-style:italic;font-display:swap;
}

:root{
  --bg-000:#FFFFFF; --bg-100:#FAF9F5; --bg-200:#F5F4ED; --bg-300:#F0EEE6; --bg-400:#E8E6DC;
  --text-000:#141413; --text-200:#3D3D3A; --text-400:#73726C;
  --border:#DFDDD2;
  --brand:#D97757; --brand-deep:#C2603F;
  --bubble:#F0EEE6;
  --hover:rgba(32,30,27,4.5%); --active:rgba(32,30,27,8%);
  --shadow-menu:0 10px 32px rgba(20,20,19,.12),0 2px 8px rgba(20,20,19,.08);
  --code-bg:#1F1E1D; --code-text:#F5F4ED;
  --caret:#D97757;
  color-scheme:light;
}
.dark{
  --bg-000:#30302E; --bg-100:#262624; --bg-200:#1F1E1D; --bg-300:#141413; --bg-400:#0F0F0E;
  --text-000:#FAF9F5; --text-200:#C2C0B6; --text-400:#9C9A92;
  --border:#383734;
  --brand:#D97757; --brand-deep:#E0906F;
  --bubble:#1F1E1D;
  --hover:rgba(250,249,245,5.5%); --active:rgba(250,249,245,9%);
  --shadow-menu:0 10px 32px rgba(0,0,0,.5),0 2px 8px rgba(0,0,0,.4);
  --code-bg:#141413; --code-text:#F5F4ED;
  color-scheme:dark;
}

*{box-sizing:border-box;margin:0;padding:0}
/* авторское display:flex у .overlay перебивает UA-правило [hidden] — модалки не закрывались */
[hidden]{display:none !important}
html,body{height:100%}
body{
  font-family:'anthropic-sans',-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg-100);color:var(--text-000);
  font-size:15px;line-height:1.5;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
::selection{background:rgba(217,119,87,.28)}

#app{display:flex;height:100dvh;overflow:hidden}

/* ---------- Sidebar ---------- */
#sidebar{
  width:268px;flex-shrink:0;display:flex;flex-direction:column;
  background:var(--bg-100);border-right:1px solid var(--border);
  transition:width .18s ease;
}
#sidebar.collapsed{width:64px}
#sidebar.collapsed .sb-new span,#sidebar.collapsed .sb-search span,
#sidebar.collapsed .sb-search kbd,#sidebar.collapsed .sb-item span,
#sidebar.collapsed .sb-user-meta,#sidebar.collapsed .sb-section{display:none}
#sidebar.collapsed .sb-new,#sidebar.collapsed .sb-search{justify-content:center}
#sidebar.collapsed .sb-item{justify-content:center;padding:8px 0}
#sidebar.collapsed .sb-head{flex-direction:column;gap:8px}

.sb-head{display:flex;align-items:center;justify-content:space-between;padding:12px 12px 8px}
.sb-actions{display:flex;flex-direction:column;gap:2px;padding:0 10px}
.sb-new,.sb-search{
  display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:9px;
  font-size:14px;font-weight:500;color:var(--text-200);width:100%;text-align:left;
}
.sb-new:hover,.sb-search:hover{background:var(--hover)}
.sb-new svg{color:var(--text-200)}
.sb-search{margin-top:1px}
.sb-search kbd{
  margin-left:auto;font-family:inherit;font-size:11px;color:var(--text-400);
  border:1px solid var(--border);border-radius:5px;padding:1px 5px;
}
.sb-scroll{flex:1;overflow-y:auto;padding:4px 10px 12px;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.sb-section{
  font-size:12px;font-weight:600;color:var(--text-400);
  padding:14px 10px 5px;letter-spacing:.01em;
}
.sb-item{
  display:flex;align-items:center;gap:8px;width:100%;text-align:left;
  padding:6.5px 10px;border-radius:9px;font-size:13.5px;color:var(--text-200);
  white-space:nowrap;overflow:hidden;
}
.sb-item span{overflow:hidden;text-overflow:ellipsis}
.sb-item:hover{background:var(--hover)}
.sb-item.current{background:var(--active);font-weight:500;color:var(--text-000)}
.sb-day{font-size:11px;color:var(--text-400);padding:12px 10px 3px;font-weight:500}
.sb-empty{padding:18px 12px;font-size:13px;color:var(--text-400)}

.sb-foot{border-top:1px solid var(--border);padding:10px}
.sb-user{display:flex;align-items:center;gap:9px;width:100%;padding:7px 8px;border-radius:10px}
.sb-user:hover{background:var(--hover)}
.avatar{
  width:26px;height:26px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.sb-user-meta{flex:1;text-align:left;min-width:0}
.sb-user-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-user-plan{font-size:11px;color:var(--text-400)}

#sb-backdrop{display:none}

/* ---------- Main ---------- */
#main{flex:1;display:flex;flex-direction:column;min-width:0;position:relative;background:var(--bg-100)}

#topbar{
  height:52px;display:flex;align-items:center;gap:4px;padding:0 12px;
  position:relative;z-index:5;flex-shrink:0;
}
.topbar-spacer{flex:1}
.model-chip{
  display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:9px;
  font-size:14px;font-weight:500;color:var(--text-200);
}
.model-chip:hover{background:var(--hover)}
.model-chip.small{font-size:13px;padding:5px 9px}

.icon-btn{
  display:flex;align-items:center;justify-content:center;width:32px;height:32px;
  border-radius:8px;color:var(--text-400);flex-shrink:0;
}
.icon-btn:hover{background:var(--hover);color:var(--text-200)}
.only-mobile{display:none}

/* ---------- Welcome (empty state) ---------- */
#welcome{
  flex:1;display:none;flex-direction:column;align-items:center;justify-content:center;
  padding:0 20px 12px;min-height:0;
}
#welcome.visible{display:flex}
.greeting{display:flex;align-items:center;gap:13px;margin-bottom:26px}
.greeting h1{
  font-family:'anthropic-serif',Georgia,serif;font-weight:480;
  font-size:29px;letter-spacing:.005em;color:var(--text-000);
}
.mark{color:var(--brand)}

/* ---------- Thread ---------- */
#scroll{flex:1;overflow-y:auto;display:none;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
#scroll.visible{display:block}
#thread{max-width:47rem;margin:0 auto;padding:14px 20px 8px;display:flex;flex-direction:column;gap:22px}

.msg{display:flex;flex-direction:column}
.msg-user{align-items:flex-end}
.bubble{
  background:var(--bubble);border-radius:18px;padding:10px 16px;
  max-width:78%;font-size:15px;line-height:1.55;white-space:pre-wrap;word-wrap:break-word;
}
.msg-assistant{align-items:stretch}
.assistant-body{
  font-family:'anthropic-serif',Georgia,serif;
  font-size:16px;line-height:1.76;color:var(--text-000);
  word-wrap:break-word;min-width:0;
}
.assistant-body>*+*{margin-top:13px}
.assistant-body h1,.assistant-body h2,.assistant-body h3,.assistant-body h4{
  font-family:'anthropic-sans',sans-serif;font-weight:600;line-height:1.35;font-size:1.06em;
}
.assistant-body h1{font-size:1.28em}.assistant-body h2{font-size:1.17em}
.assistant-body ul,.assistant-body ol{padding-left:1.55em;display:flex;flex-direction:column;gap:5px}
.assistant-body li::marker{color:var(--text-400)}
.assistant-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:2px}
.assistant-body blockquote{border-left:3px solid var(--border);padding-left:14px;color:var(--text-200)}
.assistant-body code{
  font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;font-size:.86em;
  background:var(--hover);border:1px solid var(--border);border-radius:5px;padding:.1em .35em;
}
.assistant-body hr{border:none;border-top:1px solid var(--border);margin:18px 0}
.assistant-body table{border-collapse:collapse;font-size:.9em;width:100%}
.assistant-body th,.assistant-body td{border:1px solid var(--border);padding:6px 11px;text-align:left}
.assistant-body th{background:var(--hover);font-family:'anthropic-sans',sans-serif;font-size:.92em}

.codeblock{border:1px solid var(--border);border-radius:11px;overflow:hidden;margin:15px 0}
.cb-head{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--code-bg);color:#B8B6AD;padding:6px 12px;
  font-family:'anthropic-sans',sans-serif;font-size:12px;
}
.cb-head button{color:#B8B6AD;font-size:12px;padding:2px 7px;border-radius:6px;display:flex;gap:5px;align-items:center}
.cb-head button:hover{background:rgba(255,255,255,.09);color:#fff}
.codeblock pre{
  background:var(--code-bg);color:var(--code-text);
  padding:13px 15px;overflow-x:auto;
  font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  font-size:13.2px;line-height:1.6;
}

.caret{display:inline-block;width:9px;height:17px;background:var(--caret);margin-left:2px;vertical-align:-3px;animation:blink 1s steps(2) infinite;border-radius:1.5px}
@keyframes blink{50%{opacity:0}}

.msg-err{
  border:1px solid rgba(200,60,40,.35);background:rgba(200,60,40,.06);
  border-radius:12px;padding:11px 14px;font-size:13.5px;color:var(--text-200);
  font-family:'anthropic-sans',sans-serif;display:flex;gap:10px;align-items:center;justify-content:space-between;
}
.msg-err b{color:#B3402A;font-weight:600}
.dark .msg-err b{color:#E08A77}

.msg-actions{display:flex;gap:2px;margin-top:7px;opacity:0;transition:opacity .12s}
.msg:hover .msg-actions{opacity:1}
.msg-actions .icon-btn{width:28px;height:28px}
.msg-actions .icon-btn svg{width:14px;height:14px}

/* ---------- Composer ---------- */
#composer-zone{padding:0 20px 10px;flex-shrink:0}
#composer{
  max-width:47rem;margin:0 auto;background:var(--bg-300);
  border:1px solid transparent;border-radius:16px;padding:13px 13px 9px;
  transition:border-color .15s, box-shadow .15s;
}
#composer:focus-within{border-color:var(--border);box-shadow:0 2px 10px rgba(20,20,19,4%)}
#input{
  width:100%;background:none;border:none;outline:none;resize:none;
  max-height:220px;padding:2px 4px 6px;font-size:15.5px;line-height:1.5;color:var(--text-000);
}
#input::placeholder{color:var(--text-400)}
.composer-bar{display:flex;align-items:center;justify-content:space-between;gap:8px}
.cb-left,.cb-right{display:flex;align-items:center;gap:6px}
#btn-send{
  width:30px;height:30px;border-radius:50%;background:var(--text-000);color:var(--bg-100);
  display:flex;align-items:center;justify-content:center;transition:opacity .12s, transform .12s;
}
#btn-send:hover:not(:disabled){transform:scale(1.06)}
#btn-send:disabled{background:var(--bg-400);color:var(--text-400);cursor:default}
.dark #btn-send:disabled{background:var(--bg-000);color:var(--text-400)}
.disclaimer{
  max-width:47rem;margin:7px auto 0;text-align:center;
  font-size:11.5px;color:var(--text-400);
}

/* ---------- Popover / menus ---------- */
.popover{
  position:fixed;z-index:60;background:var(--bg-000);border:1px solid var(--border);
  border-radius:13px;box-shadow:var(--shadow-menu);padding:5px;min-width:210px;
}
.popover .row{
  display:flex;align-items:center;gap:9px;width:100%;text-align:left;
  padding:8px 10px;border-radius:8px;font-size:13.5px;
}
.popover .row:hover{background:var(--hover)}
.popover .row .check{margin-left:auto;color:var(--text-000)}
.popover .sep{height:1px;background:var(--border);margin:5px 8px}

.model-row{flex-direction:column;align-items:stretch;gap:1px}
.model-row .mr-top{display:flex;align-items:center;gap:8px}
.model-row .mr-name{font-weight:500;font-size:14px}
.model-row .mr-desc{font-size:12px;color:var(--text-400);padding-left:24px;line-height:1.4}

/* ---------- Overlays / modals ---------- */
.overlay{
  position:fixed;inset:0;z-index:80;background:rgba(20,20,19,.32);
  display:flex;align-items:flex-start;justify-content:center;padding:14vh 16px 16px;
  backdrop-filter:blur(2px);
}
.cmdk-card{
  width:560px;max-width:100%;background:var(--bg-000);border:1px solid var(--border);
  border-radius:14px;box-shadow:var(--shadow-menu);overflow:hidden;
}
.cmdk-input-row{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border);color:var(--text-400)}
.cmdk-input-row input{flex:1;border:none;outline:none;background:none;font-size:15px;color:var(--text-000)}
.cmdk-input-row kbd{font-size:11px;color:var(--text-400);border:1px solid var(--border);border-radius:5px;padding:1px 5px}
.cmdk-results{max-height:46vh;overflow-y:auto;padding:6px}
.cmdk-item{display:flex;flex-direction:column;gap:1px;width:100%;text-align:left;padding:8px 12px;border-radius:9px}
.cmdk-item:hover,.cmdk-item.sel{background:var(--hover)}
.cmdk-item .t{font-size:13.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cmdk-item .s{font-size:12px;color:var(--text-400);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cmdk-empty{padding:22px;text-align:center;color:var(--text-400);font-size:13.5px}

.modal-card{
  width:460px;max-width:100%;background:var(--bg-000);border:1px solid var(--border);
  border-radius:15px;box-shadow:var(--shadow-menu);
  display:flex;flex-direction:column;max-height:80vh;
}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 0}
.modal-head h2{font-size:16.5px;font-weight:600}
.modal-body{padding:14px 18px;display:flex;flex-direction:column;gap:13px;overflow-y:auto}
.field{display:flex;flex-direction:column;gap:5px;flex:1}
.field>span{font-size:12.5px;font-weight:500;color:var(--text-200)}
.field input,.field select{
  border:1px solid var(--border);border-radius:9px;background:var(--bg-100);
  padding:8px 11px;font-size:14px;outline:none;width:100%;
}
.field input:focus,.field select:focus{border-color:var(--brand)}
.key-row{display:flex;gap:6px;align-items:center}
.field-row{display:flex;gap:12px}
.hint{font-size:12px;color:var(--text-400);line-height:1.5}
.modal-foot{display:flex;justify-content:space-between;align-items:center;padding:14px 18px 16px;gap:10px}
.btn-primary{
  background:var(--text-000);color:var(--bg-100);border-radius:10px;
  padding:8px 16px;font-size:14px;font-weight:500;
}
.btn-primary:hover{opacity:.88}
.btn-ghost{color:var(--text-400);font-size:13px;padding:8px 10px;border-radius:8px}
.btn-ghost:hover{background:var(--hover);color:var(--text-200)}

#toast{
  position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:100;
  background:var(--text-000);color:var(--bg-100);font-size:13.5px;
  padding:9px 16px;border-radius:10px;box-shadow:var(--shadow-menu);
  animation:toast-in .18s ease;
}
@keyframes toast-in{from{opacity:0;transform:translateX(-50%) translateY(8px)}}

/* ---------- Artifacts panel ---------- */
#artifact-panel{
  display:none;width:460px;flex-shrink:0;border-left:1px solid var(--border);
  background:var(--bg-100);flex-direction:column;
}
#artifact-panel.open{display:flex}
.ap-head{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--border)}
.ap-title{font-size:13.5px;font-weight:600;color:var(--text-200)}
#ap-frame{flex:1;border:none;width:100%;background:#fff}

/* ---------- Scrollbars ---------- */
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:8px;border:2.5px solid var(--bg-100)}
::-webkit-scrollbar-track{background:transparent}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  #artifact-panel{position:fixed;right:0;top:0;bottom:0;z-index:70;box-shadow:var(--shadow-menu)}
}
@media (max-width:760px){
  .only-mobile{display:flex}
  #sidebar{position:fixed;left:0;top:0;bottom:0;z-index:75;transform:translateX(-102%);transition:transform .2s ease;box-shadow:var(--shadow-menu)}
  #sidebar.mobile-open{transform:none}
  #sb-backdrop{display:none;position:fixed;inset:0;z-index:70;background:rgba(20,20,19,.32)}
  #sb-backdrop.visible{display:block}
  #sidebar.collapsed{width:268px}
  #sidebar.collapsed .sb-new span,#sidebar.collapsed .sb-search span{display:inline}
  #thread{padding:10px 14px}
  .bubble{max-width:88%}
  #composer-zone{padding:0 12px 8px}
  #btn-collapse{display:none}
}