/* 登录 / 初始化 */
.auth-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 18px;
  background:
    radial-gradient(900px 500px at 15% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(700px 400px at 95% 110%, color-mix(in srgb, #7b5cff 14%, transparent), transparent 60%),
    var(--bg);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 30px 28px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.auth-brand .brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  font-size: 17px;
}

.auth-brand h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.auth-brand p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.auth-submit {
  height: 44px;
  margin-top: 4px;
}

.auth-foot {
  margin-top: 18px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  line-height: 1.7;
}

.setup-card {
  max-width: 620px;
}

.setup-card h2 {
  margin: 0 0 6px;
  font-size: 19px;
}

.setup-card > p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13.5px;
}

.setup-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.setup-steps li {
  position: relative;
  padding: 12px 14px 12px 46px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--panel-2);
  font-size: 13px;
  color: var(--text-soft);
  counter-increment: step;
}

.setup-steps li::before {
  content: counter(step);
  position: absolute;
  left: 13px;
  top: 12px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 700;
}

.setup-steps code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
}

.setup-form {
  display: grid;
  gap: 14px;
}

/* 对话页 */
.chat-view {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.messages-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.messages-inner {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 26px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 22px 60px;
}

.welcome-mark {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border-radius: 19px;
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #2f6bff, #7b5cff);
  box-shadow: 0 14px 40px rgba(47, 107, 255, 0.28);
  margin-bottom: 20px;
}

.welcome h1 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.welcome p {
  margin: 0;
  max-width: 520px;
  color: var(--muted);
  font-size: 14px;
}

.suggestions {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  width: 100%;
  max-width: 560px;
}

.suggestion {
  text-align: left;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.5;
  transition: 0.15s ease;
}

.suggestion:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.suggestion b {
  display: block;
  margin-bottom: 2px;
  font-size: 12.5px;
  color: var(--text);
}

.suggestion span {
  color: var(--muted);
}

/* 消息 */
.message {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.message.user {
  flex-direction: row-reverse;
}

.msg-avatar {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--panel);
  color: var(--muted);
  border: 1px solid var(--border);
  margin-top: 1px;
}

.message.user .msg-avatar {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.msg-body {
  min-width: 0;
  max-width: min(100%, 720px);
  flex: 1;
}

.message.user .msg-body {
  flex: 0 1 auto;
  max-width: min(88%, 620px);
}

.msg-role {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.message.user .msg-role {
  justify-content: flex-end;
}

.msg-status {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.msg-status.error {
  color: var(--danger);
}

.bubble {
  padding: 13px 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.72;
  word-break: break-word;
  box-shadow: var(--shadow-sm);
}

.message.user .bubble {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(47, 107, 255, 0.18);
}

.message.user .bubble a {
  color: #fff;
  text-decoration: underline;
}

.msg-actions {
  display: flex;
  gap: 2px;
  margin-top: 6px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.message:hover .msg-actions,
.msg-actions:focus-within {
  opacity: 1;
}

.message.user .msg-actions {
  justify-content: flex-end;
}

.msg-action {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 27px;
  padding: 0 7px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 11.5px;
}

.msg-action:hover {
  background: var(--panel);
  color: var(--text);
}

.msg-action .icon {
  width: 13px;
  height: 13px;
}

/* Markdown */
.markdown > *:first-child { margin-top: 0; }
.markdown > *:last-child { margin-bottom: 0; }

.markdown p {
  margin: 0 0 10px;
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4 {
  margin: 20px 0 8px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.markdown h1 { font-size: 21px; }
.markdown h2 { font-size: 18px; }
.markdown h3 { font-size: 16px; }

.markdown ul,
.markdown ol {
  margin: 8px 0 12px;
  padding-left: 22px;
}

.markdown li {
  margin: 4px 0;
}

.markdown blockquote {
  margin: 10px 0;
  padding: 2px 0 2px 13px;
  border-left: 3px solid var(--border-strong);
  color: var(--muted);
}

.markdown a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.markdown code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
}

.markdown pre {
  position: relative;
  margin: 12px 0;
  padding: 14px 15px;
  border-radius: 11px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.markdown pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 12.8px;
  line-height: 1.65;
  white-space: pre;
}

.message.user .markdown code,
.message.user .markdown pre {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.copy-code {
  position: absolute;
  top: 7px;
  right: 7px;
  height: 24px;
  padding: 0 8px;
  border-radius: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.markdown pre:hover .copy-code {
  opacity: 1;
}

.markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
}

.markdown th,
.markdown td {
  border: 1px solid var(--border);
  padding: 7px 9px;
  text-align: left;
}

.markdown th {
  background: var(--panel-2);
  font-weight: 600;
}

.markdown hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

/* 代码高亮（配合 highlight.js） */
.hljs-comment,
.hljs-quote { color: #8b949e; }
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal { color: #cf6bd6; }
.hljs-string,
.hljs-attr { color: #2f9e6e; }
.hljs-number,
.hljs-built_in { color: #d18b3c; }
.hljs-title,
.hljs-function { color: #4c83ff; }
.hljs-variable,
.hljs-template-variable { color: #e06c75; }
.hljs-type,
.hljs-class { color: #c8a24a; }
.hljs-meta { color: #8b95a5; }

html[data-theme="dark"] .hljs-comment,
html[data-theme="dark"] .hljs-quote { color: #7d8796; }
html[data-theme="dark"] .hljs-keyword,
html[data-theme="dark"] .hljs-selector-tag,
html[data-theme="dark"] .hljs-literal { color: #d2a8ff; }
html[data-theme="dark"] .hljs-string,
html[data-theme="dark"] .hljs-attr { color: #7ee787; }
html[data-theme="dark"] .hljs-number,
html[data-theme="dark"] .hljs-built_in { color: #ffa657; }
html[data-theme="dark"] .hljs-title,
html[data-theme="dark"] .hljs-function { color: #79c0ff; }
html[data-theme="dark"] .hljs-type,
html[data-theme="dark"] .hljs-class { color: #e3b341; }

/* 流式光标 */
.streaming-cursor {
  display: inline-block;
  width: 7px;
  height: 15px;
  margin-left: 2px;
  vertical-align: -2px;
  border-radius: 2px;
  background: var(--accent);
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* 引用来源 */
.refs {
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--panel-2);
  overflow: hidden;
}

.refs summary {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-soft);
  list-style: none;
  user-select: none;
}

.refs summary::-webkit-details-marker {
  display: none;
}

.refs summary .icon {
  width: 14px;
  height: 14px;
  color: var(--muted);
}

.refs summary .count {
  margin-left: auto;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.ref-list {
  padding: 0 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.ref-item {
  padding: 9px 11px;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.ref-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-soft);
}

.ref-head .score {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--muted);
}

.ref-snippet {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.refs[open] .ref-snippet {
  -webkit-line-clamp: unset;
}

/* 输入区 */
.composer-wrap {
  flex: none;
  padding: 10px 22px 18px;
  background: linear-gradient(to top, var(--bg) 62%, transparent);
}

.composer {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.composer:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.composer textarea {
  display: block;
  width: 100%;
  min-height: 52px;
  max-height: 200px;
  padding: 14px 16px 6px;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.6;
}

.composer textarea::placeholder {
  color: var(--muted);
}

.composer-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 10px 14px;
}

.composer-hint {
  flex: 1;
  font-size: 11.5px;
  color: var(--muted);
}

.send-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  transition: background 0.15s ease, transform 0.1s ease;
}

.send-btn:hover:not(:disabled) {
  background: var(--accent-hover);
}

.send-btn:active:not(:disabled) {
  transform: scale(0.96);
}

.send-btn:disabled {
  background: var(--border-strong);
  color: var(--panel);
}

.stop-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 11px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text-soft);
  font-size: 12.5px;
}

.stop-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.composer-error {
  max-width: 860px;
  margin: 0 auto 8px;
}

/* 顶部滚动提示 */
.scroll-bottom {
  position: absolute;
  left: 50%;
  bottom: 118px;
  transform: translateX(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  color: var(--muted);
  z-index: 5;
}

.scroll-bottom:hover {
  color: var(--text);
}

.messages-scroll {
  display: flex;
  flex-direction: column;
}

.messages-inner {
  flex: none;
}

.welcome[hidden],
.messages-inner[hidden] {
  display: none !important;
}

.plain {
  white-space: pre-wrap;
  word-break: break-word;
}

.msg-usage {
  margin-top: 6px;
  font-size: 11px;
  color: var(--muted);
}

.msg-usage:empty {
  display: none;
}

@media (max-width: 700px) {
  .messages-inner {
    padding: 18px 14px 12px;
    gap: 18px;
  }

  .composer-wrap {
    padding: 8px 12px 14px;
  }

  .suggestions {
    grid-template-columns: 1fr;
  }

  .welcome h1 {
    font-size: 22px;
  }

  .bubble {
    font-size: 14px;
    padding: 11px 13px;
  }
}