:root {
  --bg: #0b0d10;
  --card: #14171c;
  --card2: #1a1e25;
  --border: #262b33;
  --text: #e7ebf0;
  --muted: #8b94a4;
  --accent: #4c8bf5;
  --accent-h: #639dff;
  --danger: #e0533d;
  --ok: #4caf50;
  --warn: #f0a826;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif; }

button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); }

/* --- auth --- */
body.auth { min-height: 100vh; display: grid; place-items: center; }
body.auth .card { background: var(--card); border: 1px solid var(--border);
  padding: 28px 32px; border-radius: 14px; min-width: 320px; }
body.auth h1 { margin: 0 0 4px; font-size: 22px; }
body.auth .muted { color: var(--muted); margin: 0 0 18px; font-size: 13px; }
body.auth label { display: block; margin: 12px 0; }
body.auth label span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
body.auth input { width: 100%; padding: 10px 12px; background: var(--card2);
  border: 1px solid var(--border); border-radius: 8px; }
body.auth input:focus { outline: none; border-color: var(--accent); }
body.auth button.primary { width: 100%; padding: 10px; background: var(--accent);
  border: none; border-radius: 8px; cursor: pointer; margin-top: 6px; }
body.auth button.primary:hover { background: var(--accent-h); }
body.auth .err { color: var(--danger); margin-top: 12px; }
body.auth .small { font-size: 12px; margin-top: 16px; }

/* --- app --- */
body.app { min-height: 100vh; }
.topbar { display: flex; justify-content: space-between; align-items: center;
  padding: 10px 18px; border-bottom: 1px solid var(--border); background: var(--card); }
.topbar .brand { font-weight: 600; font-size: 15px; letter-spacing: 0.3px; }
.topbar nav { display: flex; gap: 10px; align-items: center; }
.topbar nav form.inline { display: inline; }
.status-pill { padding: 4px 10px; border-radius: 999px; background: var(--card2);
  border: 1px solid var(--border); font-size: 12px; }
.status-pill.ok { color: var(--ok); }
.status-pill.err { color: var(--danger); }
.status-pill.warn { color: var(--warn); }
.status-pill.idle { color: var(--muted); }
.status-pill.busy { color: var(--warn); border-color: var(--warn); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 14px; }
.panel { background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px; }
.panel h2 { margin: 0 0 10px; font-size: 14px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
.panel.actions { grid-column: 1 / -1; }
.panel.logs { grid-column: 1 / -1; }

.btns { display: flex; gap: 10px; flex-wrap: wrap; }
button.primary { padding: 10px 16px; background: var(--accent); color: white;
  border: none; border-radius: 8px; cursor: pointer; font-weight: 500; }
button.primary:hover { background: var(--accent-h); }
button.primary:disabled { opacity: 0.45; cursor: not-allowed; }
button.primary.danger { background: var(--danger); }
button.primary.danger:hover { background: #ee6f5b; }
button.link { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; }
button.link.small { font-size: 12px; }
button.link:hover { color: var(--accent-h); text-decoration: underline; }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none !important; }

.scroll-x { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
table th, table td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; }
table th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
table td.broken { color: var(--danger); }
table td.expired { color: var(--danger); }
table td.exp-soon { color: var(--warn); }
table td.exp-ok { color: var(--ok); }

.log { background: #07090c; border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; max-height: 380px; overflow: auto;
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px; white-space: pre-wrap; word-break: break-all; }
.log .step { color: var(--accent); }
.log .err  { color: var(--danger); }
.log .ok   { color: var(--ok); }

#result-area { margin-top: 12px; }
#result-area .result-card { display: flex; gap: 12px; align-items: flex-start;
  padding: 12px; background: var(--card2); border-radius: 10px; }
#result-area img { max-width: 360px; max-height: 360px; border-radius: 8px;
  border: 1px solid var(--border); }
#result-area .meta { font-size: 12px; color: var(--muted); }
#result-area .meta code { background: #07090c; padding: 2px 4px; border-radius: 4px; color: var(--text); }

/* dialog */
dialog { background: var(--card); color: var(--text); border: 1px solid var(--border);
  border-radius: 14px; padding: 0; min-width: 420px; }
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog form { padding: 20px; }
dialog h3 { margin: 0 0 14px; font-size: 16px; }
dialog label { display: block; margin: 10px 0; }
dialog label span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
dialog textarea, dialog select { width: 100%; padding: 8px 10px; background: var(--card2);
  border: 1px solid var(--border); border-radius: 8px; resize: vertical; }
dialog textarea:focus, dialog select:focus { outline: none; border-color: var(--accent); }
.dlg-btns { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.dlg-btns button { padding: 8px 14px; background: var(--card2); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; }
.dlg-btns button.primary { background: var(--accent); border-color: var(--accent); }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  body.app .topbar nav { gap: 6px; }
  .status-pill { font-size: 11px; padding: 3px 8px; }
}

/* --- tabs --- */
.topbar nav.tabs { gap: 4px; }
.tab { padding: 6px 14px; background: transparent; border: 1px solid transparent;
  color: var(--muted); cursor: pointer; border-radius: 8px; font-weight: 500; }
.tab:hover { background: var(--card2); color: var(--text); }
.tab.active { background: var(--card2); color: var(--text); border-color: var(--border); }
.tab-content.hidden { display: none; }

/* --- chat layout --- */
.chat-layout { display: grid; grid-template-columns: 260px 1fr;
  height: calc(100vh - 50px); gap: 0; }
.chat-sidebar { background: var(--card); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden; }
.sidebar-head { padding: 12px; border-bottom: 1px solid var(--border); }
.new-chat-btn { width: 100%; padding: 8px 10px; }
.conv-list { list-style: none; margin: 0; padding: 6px; overflow-y: auto; flex: 1; }
.conv-list li { padding: 10px 12px; border-radius: 8px; cursor: pointer;
  margin-bottom: 2px; font-size: 13px; line-height: 1.3; }
.conv-list li:hover { background: var(--card2); }
.conv-list li.active { background: var(--card2); border: 1px solid var(--border); }
.conv-list li .conv-title { display: block; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-list li .conv-meta { color: var(--muted); font-size: 11px; margin-top: 2px; }

.chat-main { display: flex; flex-direction: column; background: var(--bg);
  overflow: hidden; }
.chat-head { display: flex; justify-content: space-between; align-items: center;
  padding: 10px 18px; border-bottom: 1px solid var(--border); background: var(--card); }
.conv-title-h { margin: 0; font-size: 14px; font-weight: 500; }
.chat-head-actions { display: flex; gap: 10px; }
.chat-stream { flex: 1; overflow-y: auto; padding: 16px 24px;
  display: flex; flex-direction: column; gap: 12px; }
.chat-empty { padding: 60px 24px; text-align: center; }
.msg { display: flex; gap: 10px; max-width: 720px; }
.msg.user { align-self: flex-end; }
.msg.assistant { align-self: flex-start; }
.msg-bubble { background: var(--card); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 14px; }
.msg.user .msg-bubble { background: var(--accent); color: white; border-color: var(--accent); }
.msg.assistant .msg-bubble { background: var(--card2); }
.msg-content { white-space: pre-wrap; word-break: break-word; line-height: 1.5; }
.msg img.msg-img { max-width: 480px; max-height: 480px; border-radius: 10px;
  border: 1px solid var(--border); display: block; margin-top: 6px; }
.msg-meta { font-size: 11px; color: var(--muted); margin-top: 6px;
  display: flex; gap: 8px; flex-wrap: wrap; }
.msg-meta code { background: #07090c; padding: 1px 4px; border-radius: 3px; color: var(--text); }
.msg-error { color: var(--danger); }
.msg-loading { display: flex; align-items: center; gap: 8px; color: var(--muted); padding: 4px 0; }
.spinner { width: 14px; height: 14px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.chat-input-area { display: flex; gap: 8px; padding: 12px 18px;
  border-top: 1px solid var(--border); background: var(--card); align-items: flex-end; }
.chat-input-area textarea { flex: 1; padding: 8px 12px; background: var(--card2);
  border: 1px solid var(--border); border-radius: 10px; resize: none;
  font-family: inherit; min-height: 38px; max-height: 200px; }
.chat-input-area textarea:focus { outline: none; border-color: var(--accent); }
.chat-input-area button { padding: 8px 18px; }

button.link.danger { color: var(--danger); }
button.link.danger:hover { color: #ee6f5b; }

@media (max-width: 720px) {
  .chat-layout { grid-template-columns: 1fr; }
  .chat-sidebar { display: none; }
}