/* ============================================================
   经方中医 AI · 设计系统
   深色底 + 暖金/蓝双主色 + 圆弧角
   ============================================================ */

:root {
  /* 背景层级 */
  --bg-0: #0d1117;
  --bg-1: #131a24;
  --bg-2: #1a2330;
  --bg-3: #222d3d;
  --surface: rgba(34, 45, 61, 0.72);
  --surface-solid: #1e2735;
  --border: rgba(148, 167, 181, 0.16);
  --border-strong: rgba(148, 167, 181, 0.32);

  /* 暖色调主色（金/琥珀） */
  --warm: #e8a85c;
  --warm-strong: #f4ba6b;
  --warm-soft: rgba(232, 168, 92, 0.14);

  /* 蓝调配色 */
  --blue: #5b9dff;
  --blue-strong: #79b0ff;
  --blue-soft: rgba(91, 157, 255, 0.14);

  /* 中医青绿（药性/生机） */
  --jade: #4fcfa3;
  --jade-soft: rgba(79, 207, 163, 0.14);

  /* 文字 */
  --text: #e9eef4;
  --text-2: #b6c2d0;
  --text-3: #8a98a8;
  --text-dim: #61707f;

  /* 语义色 */
  --danger: #ff7a7a;
  --warn: #ffce6b;
  --ok: #5fd6a0;

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-1: 0 4px 18px rgba(0, 0, 0, 0.28);
  --shadow-2: 0 12px 40px rgba(0, 0, 0, 0.42);

  --sidebar-w: 268px;
  --topbar-h: 64px;

  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(232, 168, 92, 0.10), transparent 55%),
    radial-gradient(1000px 600px at 100% 0%, rgba(91, 157, 255, 0.10), transparent 55%),
    var(--bg-0);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; }

/* ===================== 布局 ===================== */
#app { display: flex; min-height: 100vh; }

/* 侧边栏 */
#sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  transition: width .28s cubic-bezier(.4,0,.2,1), transform .28s;
  z-index: 40;
  overflow: hidden;
}
#sidebar.collapsed { width: 76px; flex-basis: 76px; }

.brand {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--border);
}
.brand .logo {
  width: 40px; height: 40px; flex: 0 0 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--warm), var(--jade));
  display: grid; place-items: center;
  font-size: 22px; font-weight: 800; color: #1a1206;
  box-shadow: 0 6px 18px rgba(232,168,92,.35);
}
.brand .brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand .brand-text b { font-size: 16px; letter-spacing: .5px; }
.brand .brand-text span { font-size: 11px; color: var(--text-3); }

.nav { padding: 12px 10px; overflow-y: auto; flex: 1; }
.nav .nav-group-label {
  font-size: 11px; color: var(--text-dim);
  padding: 14px 12px 6px; letter-spacing: 1px; text-transform: uppercase;
}
.nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 12px; margin: 3px 0;
  border-radius: var(--radius-sm);
  color: var(--text-2); font-size: 14.5px; font-weight: 500;
  position: relative; transition: background .18s, color .18s;
  white-space: nowrap;
}
.nav a .ico { width: 22px; flex: 0 0 22px; text-align: center; font-size: 17px; }
.nav a:hover { background: var(--bg-3); color: var(--text); }
.nav a.active {
  background: linear-gradient(90deg, var(--warm-soft), transparent);
  color: var(--warm-strong);
}
.nav a.active::before {
  content: ""; position: absolute; left: 0; top: 18%; bottom: 18%;
  width: 3px; border-radius: 3px; background: var(--warm);
}
#sidebar.collapsed .brand-text,
#sidebar.collapsed .nav-group-label,
#sidebar.collapsed .nav a span.label { display: none; }
#sidebar.collapsed .nav a { justify-content: center; }

.sidebar-foot {
  padding: 12px 14px; border-top: 1px solid var(--border);
  font-size: 11px; color: var(--text-dim); text-align: center;
}
#sidebar.collapsed .sidebar-foot { font-size: 0; }

/* 主区域 */
#main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: var(--topbar-h); flex: 0 0 var(--topbar-h);
  display: flex; align-items: center; gap: 14px;
  padding: 0 22px;
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 30;
}
.topbar .toggle {
  width: 40px; height: 40px; border-radius: 11px;
  border: 1px solid var(--border); background: var(--bg-2);
  color: var(--text-2); font-size: 18px; display: grid; place-items: center;
  transition: background .18s, color .18s;
}
.topbar .toggle:hover { background: var(--bg-3); color: var(--text); }
.topbar h1 { font-size: 17px; font-weight: 700; letter-spacing: .3px; }
.topbar .sub { font-size: 12.5px; color: var(--text-3); margin-left: 2px; }
.topbar .spacer { flex: 1; }
.topbar .pill {
  font-size: 12px; color: var(--text-3);
  border: 1px solid var(--border); border-radius: var(--radius-pill);
  padding: 6px 13px;
}

.content { padding: 26px 30px 60px; max-width: 1180px; width: 100%; margin: 0 auto; }

/* ===================== 通用组件 ===================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-1);
}
.card + .card { margin-top: 18px; }

.section-title {
  font-size: 14px; font-weight: 700; color: var(--text);
  letter-spacing: .4px; margin-bottom: 14px;
  display: flex; align-items: center; gap: 9px;
}
.section-title .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--warm); box-shadow: 0 0 12px var(--warm); }
.section-title .dot.blue { background: var(--blue); box-shadow: 0 0 12px var(--blue); }
.section-title .dot.jade { background: var(--jade); box-shadow: 0 0 12px var(--jade); }

.muted { color: var(--text-3); }
.tiny { font-size: 12.5px; }
.tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; padding: 3px 10px; border-radius: var(--radius-pill);
  background: var(--bg-3); color: var(--text-2); border: 1px solid var(--border);
}
.tag.warm { background: var(--warm-soft); color: var(--warm-strong); border-color: transparent; }
.tag.blue { background: var(--blue-soft); color: var(--blue-strong); border-color: transparent; }
.tag.jade { background: var(--jade-soft); color: var(--jade); border-color: transparent; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 14px; font-weight: 600;
  padding: 11px 20px; border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong); background: var(--bg-2); color: var(--text);
  transition: transform .12s, box-shadow .18s, background .18s, border-color .18s;
}
.btn:hover { transform: translateY(-1px); border-color: var(--border-strong); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: linear-gradient(135deg, var(--warm), #e0913f);
  border-color: transparent; color: #1c1305;
  box-shadow: 0 8px 22px rgba(232,168,92,.32);
}
.btn.primary:hover { box-shadow: 0 10px 28px rgba(232,168,92,.45); }
.btn.blue { background: linear-gradient(135deg, var(--blue), #3f7fe0); border-color: transparent; color: #061226; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.disclaimer {
  background: rgba(255, 206, 107, 0.08);
  border: 1px solid rgba(255, 206, 107, 0.28);
  color: var(--warn);
  border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 12.5px; margin-bottom: 20px;
  display: flex; gap: 9px; align-items: flex-start;
}
.disclaimer .i { font-size: 15px; line-height: 1.4; }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* 首页功能卡 */
.hero {
  border-radius: var(--radius-lg);
  background:
    radial-gradient(600px 300px at 85% -20%, rgba(91,157,255,.16), transparent 60%),
    linear-gradient(135deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--border);
  padding: 38px 36px;
  position: relative; overflow: hidden;
  margin-bottom: 26px;
}
.hero h2 { font-size: 30px; font-weight: 800; letter-spacing: .5px; }
.hero p { color: var(--text-2); margin-top: 10px; max-width: 640px; font-size: 15px; }
.hero .eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 2px;
  color: var(--warm-strong); text-transform: uppercase; margin-bottom: 12px;
  border: 1px solid var(--warm-soft); padding: 4px 12px; border-radius: var(--radius-pill);
  background: var(--warm-soft);
}
.hero .deco {
  position: absolute; right: -40px; top: -40px; width: 240px; height: 240px;
  border-radius: 50%; background: radial-gradient(circle at 30% 30%, rgba(79,207,163,.4), transparent 60%);
  filter: blur(10px);
}

.feature-card {
  display: block; position: relative;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  transition: transform .16s, border-color .18s, box-shadow .18s;
  overflow: hidden;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-2); }
.feature-card .fc-icon {
  width: 50px; height: 50px; border-radius: 14px;
  display: grid; place-items: center; font-size: 24px; margin-bottom: 14px;
  background: var(--warm-soft); color: var(--warm-strong);
}
.feature-card.blue .fc-icon { background: var(--blue-soft); color: var(--blue-strong); }
.feature-card.jade .fc-icon { background: var(--jade-soft); color: var(--jade); }
.feature-card h3 { font-size: 17px; font-weight: 700; }
.feature-card p { color: var(--text-3); font-size: 13.5px; margin-top: 7px; min-height: 44px; }
.feature-card .fc-go {
  margin-top: 14px; font-size: 13px; color: var(--warm-strong); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.feature-card .fc-arrow { transition: transform .16s; }
.feature-card:hover .fc-arrow { transform: translateX(4px); }

/* 表单 */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; color: var(--text-2); margin-bottom: 7px; font-weight: 600; }
.input, .textarea, .select {
  width: 100%; background: var(--bg-1); border: 1px solid var(--border);
  color: var(--text); border-radius: var(--radius-sm); padding: 11px 14px;
  font-size: 14px; font-family: inherit; transition: border-color .16s, box-shadow .16s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--warm); box-shadow: 0 0 0 3px var(--warm-soft);
}
.textarea { resize: vertical; min-height: 96px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 140px; }

/* 进度条 */
.progress { height: 8px; border-radius: var(--radius-pill); background: var(--bg-3); overflow: hidden; }
.progress > i { display: block; height: 100%; border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--warm), var(--jade)); transition: width .4s; }

/* 聊天 */
.chat { display: flex; flex-direction: column; gap: 14px; min-height: 320px; }
.msg { display: flex; gap: 12px; max-width: 92%; }
.msg .ava { width: 34px; height: 34px; flex: 0 0 34px; border-radius: 10px; display: grid; place-items: center; font-size: 16px; }
.msg.user { align-self: flex-end; flex-direction: row-reverse; }
.msg.user .ava { background: var(--blue-soft); color: var(--blue-strong); }
.msg.bot .ava { background: var(--warm-soft); color: var(--warm-strong); }
.msg .bubble { background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px; padding: 12px 15px; font-size: 14px; }
.msg.user .bubble { background: var(--blue-soft); border-color: transparent; }
.msg .bubble h4 { font-size: 14px; margin-bottom: 6px; color: var(--warm-strong); }
.msg .bubble p { margin: 4px 0; }
.msg .bubble ul { margin: 6px 0 0 18px; }
.typing { font-size: 12px; color: var(--text-3); }

/* 两栏 Agent */
.agent-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 980px) { .agent-grid { grid-template-columns: 1fr; } }
.agent-col { display: flex; flex-direction: column; min-height: 460px; }
.agent-col .agent-head {
  display: flex; align-items: center; gap: 10px; padding-bottom: 12px; margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.agent-col .agent-head .badge {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; font-size: 19px;
}
.agent-col.bz .agent-head .badge { background: var(--warm-soft); color: var(--warm-strong); }
.agent-col.hl .agent-head .badge { background: var(--blue-soft); color: var(--blue-strong); }
.agent-col .agent-head b { font-size: 15px; }
.agent-col .agent-head small { display: block; color: var(--text-3); font-size: 12px; }
.agent-body { flex: 1; overflow-y: auto; padding-right: 6px; }

/* 统计块 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px,1fr)); gap: 14px; }
.stat {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; text-align: center;
}
.stat b { font-size: 26px; font-weight: 800; color: var(--warm-strong); display: block; }
.stat.blue b { color: var(--blue-strong); }
.stat.jade b { color: var(--jade); }
.stat span { font-size: 12.5px; color: var(--text-3); }

/* 列表/卡片结果 */
.result-item {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; margin-bottom: 12px; transition: border-color .16s, transform .16s;
}
.result-item:hover { border-color: var(--border-strong); transform: translateX(2px); }
.result-item h4 { font-size: 15.5px; font-weight: 700; display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.result-item .meta { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.result-item p { font-size: 13.5px; color: var(--text-2); margin-top: 6px; }
.result-item .quote { border-left: 3px solid var(--warm); padding-left: 12px; color: var(--text-2); font-size: 13.5px; margin-top: 8px; font-style: normal; }

.flex { display: flex; }
.between { justify-content: space-between; }
.center { align-items: center; }
.wrap { flex-wrap: wrap; }
.gap-s { gap: 8px; } .gap { gap: 14px; }

/* 图表容器 */
#graph-container { width: 100%; height: 620px; border-radius: var(--radius); background: var(--bg-1); border: 1px solid var(--border); overflow: hidden; }

/* 图例 */
.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-2); margin-top: 12px; }
.legend i { width: 12px; height: 12px; border-radius: 50%; display: inline-block; margin-right: 6px; vertical-align: -1px; }

/* 选项按钮组（问卷/自测） */
.opts { display: flex; gap: 10px; flex-wrap: wrap; }
.opt {
  flex: 1; min-width: 90px; text-align: center;
  padding: 12px 8px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-1); color: var(--text-2);
  font-size: 14px; font-weight: 600; transition: all .15s;
}
.opt:hover { border-color: var(--border-strong); color: var(--text); }
.opt.sel { background: var(--warm-soft); border-color: var(--warm); color: var(--warm-strong); }

/* 评分条 */
.score-bar { display: flex; align-items: center; gap: 10px; margin: 8px 0; }
.score-bar .name { width: 84px; font-size: 13.5px; }
.score-bar .track { flex: 1; height: 10px; background: var(--bg-3); border-radius: var(--radius-pill); overflow: hidden; }
.score-bar .track > i { display: block; height: 100%; border-radius: var(--radius-pill); background: linear-gradient(90deg, var(--blue), var(--warm)); }
.score-bar .val { width: 42px; text-align: right; font-size: 13px; color: var(--text-2); }

/* 脉象卡 */
.pulse-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; transition: border-color .16s, transform .16s;
}
.pulse-card:hover { border-color: var(--warm); transform: translateY(-2px); }
.pulse-card h4 { font-size: 16px; font-weight: 700; color: var(--warm-strong); }
.pulse-card .zheng { font-size: 12.5px; color: var(--jade); margin: 4px 0; }
.pulse-card p { font-size: 13px; color: var(--text-2); margin-top: 4px; }

/* PPG */
.ppg-wrap { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.ppg-video { width: 220px; height: 220px; border-radius: var(--radius); overflow: hidden; background: #000; border: 1px solid var(--border); position: relative; }
.ppg-video video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.ppg-readout { flex: 1; min-width: 220px; }
.ppg-bpm { font-size: 54px; font-weight: 800; color: var(--jade); line-height: 1; }
.ppg-bpm small { font-size: 16px; color: var(--text-3); font-weight: 500; margin-left: 6px; }
#ppg-canvas { width: 100%; height: 90px; background: var(--bg-1); border-radius: var(--radius-sm); border: 1px solid var(--border); margin-top: 14px; }

/* 舌诊 */
.upload-zone {
  border: 2px dashed var(--border-strong); border-radius: var(--radius);
  padding: 30px; text-align: center; color: var(--text-3);
  transition: border-color .18s, background .18s; cursor: pointer;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--warm); background: var(--warm-soft); }
.upload-zone .up-ico { font-size: 38px; margin-bottom: 8px; }
.preview-img { max-width: 280px; border-radius: var(--radius); border: 1px solid var(--border); margin-top: 14px; }
.tongue-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 12px; }
.tongue-item { background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; }
.tongue-item .k { font-size: 12px; color: var(--text-3); }
.tongue-item .v { font-size: 15px; font-weight: 700; color: var(--warm-strong); margin-top: 3px; }

/* 标签页 */
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  padding: 10px 16px; font-size: 14px; font-weight: 600; color: var(--text-3);
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--warm-strong); border-bottom-color: var(--warm); }

/* 搜索框 */
.search-bar { display: flex; gap: 10px; margin-bottom: 18px; }
.search-bar .input { flex: 1; }

/* 空状态 */
.empty { text-align: center; color: var(--text-3); padding: 40px; font-size: 14px; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 10px; border: 2px solid var(--bg-0); }
::-webkit-scrollbar-thumb:hover { background: #2c3a4d; }

/* 响应式：移动端默认收起侧栏 */
@media (max-width: 760px) {
  #sidebar { position: fixed; left: 0; top: 0; transform: translateX(-100%); box-shadow: var(--shadow-2); }
  #sidebar.open { transform: translateX(0); }
  .content { padding: 18px 16px 50px; }
  .overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 35; display: none; }
  .overlay.show { display: block; }
}
@media (min-width: 761px) {
  .overlay { display: none !important; }
}