/* 镇安县智能文旅助手 - 文旅风格样式
   配色：秦岭青绿 / 水墨黛 / 宣纸米白 / 朱砂红 / 鎏金 */

:root {
  --paper: #f7f3e9;
  --paper-2: #fbf8f0;
  --ink: #232a26;
  --ink-soft: #57615a;
  --ink-mute: #8b948d;
  --green-900: #143628;
  --green-700: #1f4d3a;
  --green-600: #2d6a52;
  --green-500: #3a8a66;
  --green-300: #7fbf9f;
  --green-50: #eaf4ee;
  --gold: #c9a86a;
  --gold-soft: #e8c47a;
  --vermillion: #b8473a;
  --line: #e4ddca;
  --line-soft: #efe9d8;
  --shadow: 0 6px 28px rgba(31, 77, 58, 0.10);
  --shadow-sm: 0 2px 10px rgba(31, 77, 58, 0.06);
  --radius: 16px;
  --maxw: 860px;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, #eef3ec 0%, rgba(238,243,236,0) 60%),
    radial-gradient(900px 500px at -10% 110%, #f1ece0 0%, rgba(241,236,224,0) 55%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

/* ---------- 顶栏 ---------- */
.topbar {
  flex: 0 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  background: rgba(251, 248, 240, 0.82);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--green-50), #fff);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.brand-title {
  font-family: var(--serif);
  font-size: 19px; font-weight: 700;
  letter-spacing: 1px;
  color: var(--green-900);
  line-height: 1.1;
}
.brand-sub { font-size: 11.5px; color: var(--ink-mute); letter-spacing: 0.5px; margin-top: 1px; }

.btn-new {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--sans);
  font-size: 13px; color: var(--green-700);
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: all .18s ease;
}
.btn-new:hover { background: var(--green-50); border-color: var(--green-300); transform: translateY(-1px); }

/* ---------- 主区 ---------- */
.main {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scroll-behavior: smooth;
}
.main::-webkit-scrollbar { width: 9px; }
.main::-webkit-scrollbar-thumb { background: #d8d0bb; border-radius: 9px; border: 2px solid transparent; background-clip: content-box; }
.main::-webkit-scrollbar-thumb:hover { background: #c2b89c; background-clip: content-box; }

/* ---------- 欢迎页 ---------- */
.welcome {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 7vh 24px 30px;
  text-align: center;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.welcome-mark { margin-bottom: 22px; filter: drop-shadow(0 6px 14px rgba(31,77,58,.16)); }
.welcome-title {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--green-900);
  letter-spacing: 1px;
}
.welcome-title .accent { color: var(--green-600); }
.welcome-desc {
  font-size: 15px; line-height: 1.9;
  color: var(--ink-soft); margin: 0 0 30px;
}
.suggest {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  max-width: 620px;
}
.chip {
  font-family: var(--sans);
  font-size: 14px;
  text-align: left;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  padding: 14px 16px;
  border-radius: 13px;
  cursor: pointer;
  transition: all .2s ease;
  box-shadow: var(--shadow-sm);
}
.chip:hover {
  border-color: var(--green-300);
  background: var(--green-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  color: var(--green-700);
}

/* ---------- 消息列表 ---------- */
.messages {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px 24px 18px;
}
.msg { display: flex; gap: 13px; margin-bottom: 26px; animation: rise .35s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.msg.user { flex-direction: row-reverse; }
.avatar {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  border-radius: 11px;
  display: grid; place-items: center;
  font-size: 18px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.msg.user .avatar {
  background: linear-gradient(135deg, var(--green-600), var(--green-700));
  color: #fff;
}
.msg.assistant .avatar {
  background: linear-gradient(135deg, var(--green-50), #fff);
  border: 1px solid var(--line);
}
.msg.assistant .avatar svg { width: 26px; height: 26px; }

.bubble {
  max-width: calc(100% - 52px);
  font-size: 15px;
  line-height: 1.85;
  word-wrap: break-word;
}
.msg.user .bubble {
  background: linear-gradient(135deg, var(--green-600), var(--green-700));
  color: #fff;
  padding: 12px 16px;
  border-radius: 16px 16px 4px 16px;
  box-shadow: var(--shadow-sm);
}
.msg.assistant .bubble {
  background: #fff;
  color: var(--ink);
  padding: 16px 20px;
  border-radius: 4px 16px 16px 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

/* 联网搜索状态条 */
.search-status {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--green-600);
  background: var(--green-50);
  border: 1px solid var(--green-300);
  padding: 7px 13px; border-radius: 20px;
  margin-bottom: 4px;
}
.search-status .spinner {
  width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid var(--green-300); border-top-color: var(--green-600);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 流式光标 */
.cursor {
  display: inline-block;
  width: 8px; height: 17px;
  background: var(--green-600);
  margin-left: 2px; vertical-align: text-bottom;
  border-radius: 1px;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Markdown 渲染 ---------- */
.bubble.md :first-child { margin-top: 0; }
.bubble.md h1, .bubble.md h2, .bubble.md h3, .bubble.md h4 {
  font-family: var(--serif);
  color: var(--green-900);
  margin: 18px 0 10px;
  line-height: 1.35;
  font-weight: 700;
}
.bubble.md h1 { font-size: 20px; }
.bubble.md h2 { font-size: 18px; padding-bottom: 6px; border-bottom: 1px solid var(--line-soft); }
.bubble.md h3 { font-size: 16px; color: var(--green-700); }
.bubble.md p { margin: 10px 0; }
.bubble.md ul, .bubble.md ol { margin: 10px 0; padding-left: 22px; }
.bubble.md li { margin: 5px 0; }
.bubble.md li::marker { color: var(--green-500); }
.bubble.md strong { color: var(--green-800); font-weight: 700; }
.bubble.md em { color: var(--vermillion); font-style: normal; font-weight: 600; }
.bubble.md a { color: var(--green-600); text-decoration: none; border-bottom: 1px solid var(--green-300); }
.bubble.md a:hover { color: var(--green-700); }
.bubble.md blockquote {
  margin: 12px 0; padding: 8px 14px;
  border-left: 3px solid var(--gold);
  background: #fdf8ec; color: var(--ink-soft);
  border-radius: 0 8px 8px 0;
}
.bubble.md code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  background: #f0eedf; color: var(--vermillion);
  padding: 2px 6px; border-radius: 5px;
}
.bubble.md pre {
  background: #1f2d27; color: #e8efe9;
  padding: 14px 16px; border-radius: 12px;
  overflow-x: auto; margin: 12px 0;
  font-size: 13px; line-height: 1.6;
}
.bubble.md pre code { background: none; color: inherit; padding: 0; }
.bubble.md table {
  width: 100%; border-collapse: collapse; margin: 12px 0;
  font-size: 13.5px;
}
.bubble.md th, .bubble.md td {
  border: 1px solid var(--line); padding: 8px 11px; text-align: left;
}
.bubble.md th { background: var(--green-50); color: var(--green-800); font-weight: 700; }
.bubble.md tr:nth-child(even) td { background: #fcfaf3; }
.bubble.md hr { border: none; border-top: 1px dashed var(--line); margin: 16px 0; }

/* ---------- 输入区 ---------- */
.composer {
  flex: 0 0 auto;
  background: linear-gradient(to top, var(--paper) 60%, rgba(247,243,233,0));
  padding: 10px 24px 14px;
}
.composer-inner { max-width: var(--maxw); margin: 0 auto; }
.input-wrap {
  display: flex; align-items: flex-end; gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 8px 8px 8px 18px;
  box-shadow: var(--shadow);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.input-wrap:focus-within {
  border-color: var(--green-300);
  box-shadow: 0 0 0 3px rgba(122, 191, 159, 0.18), var(--shadow);
}
.input {
  flex: 1; border: none; outline: none; resize: none;
  font-family: var(--sans); font-size: 15px; line-height: 1.6;
  max-height: 160px; padding: 7px 0;
  background: transparent; color: var(--ink);
}
.input::placeholder { color: var(--ink-mute); }
.send-btn {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  border: none; cursor: pointer;
  border-radius: 50%;
  display: grid; place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  transition: all .18s ease;
}
.send-btn:disabled { background: #cdd6cf; cursor: not-allowed; }
.send-btn:not(:disabled):hover { transform: scale(1.06); box-shadow: 0 4px 12px rgba(45,106,82,.35); }
.send-btn.stop { background: linear-gradient(135deg, var(--vermillion), #9a3b30); }

.composer-meta {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 8px; padding: 0 6px;
  font-size: 11.5px; color: var(--ink-mute);
}
.net-badge { display: inline-flex; align-items: center; gap: 6px; color: var(--green-600); }
.net-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 3px rgba(122,191,159,.25);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(122,191,159,0); } }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .topbar { padding: 0 14px; height: 54px; }
  .brand-sub { display: none; }
  .btn-new span { display: none; }
  .suggest { grid-template-columns: 1fr; }
  .messages, .welcome { padding-left: 14px; padding-right: 14px; }
  .composer { padding-left: 14px; padding-right: 14px; }
  .bubble { font-size: 14.5px; }
  .welcome-title { font-size: 24px; }
}