/* ============== 全局变量 ============== */
:root {
  --bg: #0b1220;
  --bg-card: #131c2e;
  --bg-elev: #1a2540;
  --bg-hover: #22304f;
  --border: #243352;
  --text: #e6ecf5;
  --text-mute: #8b9bb8;
  --text-dim: #5a6a85;
  --gold: #f5c451;
  --gold-soft: #d9a73a;
  --up: #ef4444;      /* 中国股市习惯：红涨 */
  --down: #22c55e;    /* 绿跌 */
  --flat: #94a3b8;
  --primary: #3b82f6;
  --primary-soft: #60a5fa;
  --danger: #ef4444;
  --warn: #f59e0b;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 16px rgba(0,0,0,.35);
  --max-w: 1280px;
  --nav-h: 60px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--primary-soft); text-decoration: none; }
a:hover { color: var(--gold); }

/* ============== 顶部导航 ============== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,18,32,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}
.topbar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; align-items: baseline; gap: 8px; color: var(--text); font-weight: 600; }
.brand-logo { font-size: 22px; }
.brand-name { font-size: 18px; color: var(--gold); letter-spacing: 1px; }
.brand-sub { font-size: 12px; color: var(--text-mute); }
.nav-menu {
  display: flex;
  gap: 4px;
  margin-left: auto;
  align-items: center;
}
.nav-link {
  padding: 8px 14px;
  color: var(--text-mute);
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: all .2s;
}
.nav-link:hover { color: var(--text); background: var(--bg-hover); }
.nav-link.active { color: var(--gold); background: var(--bg-elev); }
.nav-star { font-size: 16px; color: var(--gold); }
.menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; }

/* ============== 风险提示条 ============== */
.risk-banner {
  background: linear-gradient(90deg, #422711, #5a3015);
  color: #ffe2b8;
  font-size: 12px;
  padding: 8px 20px;
  text-align: center;
  position: relative;
  border-bottom: 1px solid #5a3015;
}
.risk-banner button.risk-close {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #ffe2b8;
  font-size: 16px;
  cursor: pointer;
  opacity: .7;
}
.risk-banner button.risk-close:hover { opacity: 1; }

/* ============== 主体容器 ============== */
.app-container {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px 60px;
}
.loading-placeholder {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-mute);
}

/* ============== 页面通用样式 ============== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.page-title { font-size: 22px; font-weight: 600; color: var(--text); margin: 0; }
.page-subtitle { font-size: 13px; color: var(--text-mute); margin: 4px 0 0; }
.section-title { font-size: 16px; font-weight: 600; margin: 24px 0 12px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ""; width: 4px; height: 16px; background: var(--gold); border-radius: 2px; }

/* 卡片 */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--gold-soft); }
.card-grid {
  display: grid;
  gap: 14px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  transition: all .2s;
}
.btn:hover { border-color: var(--gold-soft); background: var(--bg-hover); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-soft); }
.btn-gold { background: var(--gold-soft); border-color: var(--gold-soft); color: #1a1a1a; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* 表格 */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.table th, .table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.table th { color: var(--text-mute); font-weight: 500; background: var(--bg-elev); }
.table tr:hover td { background: var(--bg-elev); }

/* 涨跌色 */
.up, .pos { color: var(--up); }
.down, .neg { color: var(--down); }
.flat { color: var(--flat); }

/* Tab */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.tab {
  padding: 10px 16px;
  cursor: pointer;
  color: var(--text-mute);
  border-bottom: 2px solid transparent;
  transition: all .2s;
  font-size: 14px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--gold); border-bottom-color: var(--gold); }

/* 提示框 */
.notice {
  padding: 12px 14px;
  background: rgba(245,196,81,.08);
  border-left: 3px solid var(--gold);
  border-radius: 4px;
  color: var(--text-mute);
  font-size: 13px;
  margin-bottom: 16px;
}
.notice.warn { background: rgba(239,68,68,.08); border-left-color: var(--danger); }
.notice.info { background: rgba(59,130,246,.08); border-left-color: var(--primary); }

/* 标签 */
.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 4px;
  background: var(--bg-elev);
  color: var(--text-mute);
  margin-right: 4px;
}
.tag.tag-up { background: rgba(239,68,68,.15); color: var(--up); }
.tag.tag-down { background: rgba(34,197,94,.15); color: var(--down); }
.tag.tag-gold { background: rgba(245,196,81,.15); color: var(--gold); }
.tag.tag-primary { background: rgba(59,130,246,.15); color: var(--primary-soft); }

/* ============== 首页 ============== */
.index-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}
.index-card-list { display: grid; gap: 14px; }

.quick-entries {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.quick-entry {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all .2s;
}
.quick-entry:hover { border-color: var(--gold-soft); transform: translateY(-2px); }
.quick-entry .qe-icon { font-size: 22px; }
.quick-entry .qe-title { font-size: 14px; font-weight: 500; color: var(--text); }
.quick-entry .qe-desc { font-size: 12px; color: var(--text-dim); }

/* 指数卡片 */
.index-quote {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.index-quote .iq-card {
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.index-quote .iq-name { font-size: 13px; color: var(--text-mute); }
.index-quote .iq-value { font-size: 22px; font-weight: 600; margin: 4px 0; }
.index-quote .iq-change { font-size: 12px; }

/* 新闻列表 */
.news-list { display: flex; flex-direction: column; gap: 8px; }
.news-item {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
}
.news-item .news-time { color: var(--text-dim); min-width: 50px; }
.news-item .news-title { color: var(--text); }
.news-item .news-title:hover { color: var(--gold); }

/* ============== 股票中心 ============== */
.stock-tabs { display: flex; gap: 4px; margin-bottom: 16px; }
.stock-sub-tabs { display: flex; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.stock-list-table th, .stock-list-table td { font-size: 13px; padding: 8px 10px; }
.stock-code { color: var(--text-dim); font-family: ui-monospace, "Cascadia Mono", monospace; }
.stock-name { color: var(--text); font-weight: 500; }
.stock-name:hover { color: var(--gold); }
.stock-tag { display: inline-block; padding: 1px 6px; font-size: 10px; border-radius: 3px; margin-left: 6px; }

/* 个股详情 */
.stock-detail-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 12px 0; }
.stock-metric { padding: 10px; background: var(--bg-elev); border-radius: var(--radius-sm); }
.stock-metric .sm-label { font-size: 11px; color: var(--text-dim); }
.stock-metric .sm-value { font-size: 16px; font-weight: 600; margin-top: 2px; }

/* 新股日历 */
.ipo-calendar { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.ipo-card { padding: 12px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.ipo-card .ipo-date { color: var(--gold); font-weight: 600; font-size: 13px; }
.ipo-card .ipo-name { font-size: 15px; margin: 4px 0; }

/* ============== 知识库 ============== */
.know-cats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.know-cat-card {
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all .2s;
}
.know-cat-card:hover { border-color: var(--gold-soft); transform: translateY(-2px); }
.know-cat-card .kc-icon { font-size: 26px; }
.know-cat-card .kc-title { font-size: 16px; font-weight: 600; margin: 6px 0 4px; }
.know-cat-card .kc-desc { font-size: 12px; color: var(--text-mute); }

.know-article {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 12px;
}
.know-article h3 { margin: 0 0 8px; font-size: 16px; color: var(--gold); }
.know-article p { margin: 6px 0; color: var(--text); }
.know-article .ka-tags { margin-top: 8px; }

/* ============== 操作建议 ============== */
.advice-current {
  background: linear-gradient(135deg, #1a2540, #131c2e);
  border: 1px solid var(--gold-soft);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.advice-current .ac-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.advice-current .ac-type { color: var(--gold); font-size: 14px; font-weight: 600; }
.advice-current .ac-date { color: var(--text-mute); font-size: 12px; }
.advice-current .ac-body { color: var(--text); white-space: pre-wrap; line-height: 1.8; }
.advice-current .ac-footer { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border); font-size: 12px; color: var(--text-dim); }
.advice-history { display: flex; flex-direction: column; gap: 8px; }
.advice-history-item { padding: 10px 12px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; }
.advice-history-item:hover { border-color: var(--gold-soft); }
.advice-history-item .ahi-meta { font-size: 12px; color: var(--text-dim); }

/* ============== 智能问答 ============== */
.chat-wrap { display: flex; flex-direction: column; height: calc(100vh - 220px); min-height: 480px; }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
}
.chat-msg { display: flex; gap: 10px; margin-bottom: 14px; }
.chat-msg .cm-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}
.chat-msg.user .cm-avatar { background: var(--primary); }
.chat-msg.bot  .cm-avatar { background: var(--gold-soft); color: #1a1a1a; }
.chat-msg .cm-content {
  background: var(--bg-elev);
  padding: 10px 14px;
  border-radius: 8px;
  max-width: 80%;
  white-space: pre-wrap;
  line-height: 1.6;
}
.chat-msg.user .cm-content { background: rgba(59,130,246,.15); }
.chat-msg.bot .cm-content { background: rgba(245,196,81,.08); }
.chat-input-row { display: flex; gap: 8px; }
.chat-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  resize: none;
  min-height: 42px;
  max-height: 120px;
  font-family: inherit;
}
.chat-input:focus { outline: none; border-color: var(--gold-soft); }
.chat-quick { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.chat-quick .qbtn { padding: 4px 10px; font-size: 12px; background: var(--bg-elev); border: 1px solid var(--border); color: var(--text-mute); border-radius: 12px; cursor: pointer; }
.chat-quick .qbtn:hover { color: var(--gold); border-color: var(--gold-soft); }
.chat-typing { display: inline-flex; gap: 4px; padding: 4px 0; }
.chat-typing span { width: 6px; height: 6px; background: var(--text-dim); border-radius: 50%; animation: blink 1.4s infinite; }
.chat-typing span:nth-child(2) { animation-delay: .2s; }
.chat-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .2; } 40% { opacity: 1; } }

/* ============== 关注列表 ============== */
.watchlist-empty { text-align: center; padding: 40px; color: var(--text-mute); }

/* ============== 学习路径 ============== */
.lp-stage {
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
}
.lp-stage .lps-head { display: flex; justify-content: space-between; align-items: center; }
.lp-stage .lps-title { font-size: 16px; font-weight: 600; color: var(--gold); }
.lp-stage .lps-list { margin: 10px 0 0; padding-left: 20px; }
.lp-stage .lps-list li { margin: 6px 0; color: var(--text); }

/* ============== 风险测评 ============== */
.risk-quiz { max-width: 720px; margin: 0 auto; }
.risk-question { padding: 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; }
.risk-question .rq-title { font-size: 15px; margin-bottom: 10px; }
.risk-options { display: flex; flex-direction: column; gap: 6px; }
.risk-opt { padding: 8px 12px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; }
.risk-opt:hover { border-color: var(--gold-soft); }
.risk-opt.selected { border-color: var(--gold); background: rgba(245,196,81,.1); color: var(--gold); }
.risk-result { padding: 24px; background: var(--bg-card); border: 1px solid var(--gold-soft); border-radius: var(--radius); text-align: center; }

/* ============== 历史回测 ============== */
.bt-controls { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.bt-chart { padding: 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; }
.bt-chart canvas { width: 100%; height: 280px; }
.bt-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

/* ============== 模态弹窗 ============== */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal-mask.hidden { display: none; }
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow);
}
.modal-box h3 { margin: 0 0 14px; color: var(--gold); font-size: 18px; }
.modal-box ol { padding-left: 20px; color: var(--text); }
.modal-box ol li { margin: 8px 0; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

/* ============== Toast ============== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: transform .3s;
  box-shadow: var(--shadow);
  font-size: 13px;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ============== Footer ============== */
.footer {
  margin-top: auto;
  background: #060b16;
  border-top: 1px solid var(--border);
  padding: 30px 20px 16px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.footer-col h4 { color: var(--gold); margin: 0 0 10px; font-size: 14px; }
.footer-col p { color: var(--text-mute); font-size: 12px; line-height: 1.6; margin: 4px 0; }
.footer-col a { display: block; color: var(--text-mute); font-size: 12px; padding: 3px 0; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom {
  max-width: var(--max-w);
  margin: 20px auto 0;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  display: flex; justify-content: space-between;
  color: var(--text-dim);
  font-size: 12px;
}

/* ============== 响应式 ============== */
@media (max-width: 960px) {
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
  .index-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stock-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .bt-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 10px;
    border-bottom: 1px solid var(--border);
  }
  .nav-menu.show { display: flex; }
  .menu-toggle { display: block; margin-left: auto; }
  .brand-sub { display: none; }
  .index-quote { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4, .grid-auto { grid-template-columns: 1fr; }
  .know-cats { grid-template-columns: 1fr; }
  .quick-entries { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 4px; }
  .stock-detail-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============== 顶栏登录区 ============== */
.auth-area {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
  flex-shrink: 0;
}
.auth-login-btn {
  padding: 6px 14px;
  background: var(--gold-soft);
  color: #1a1a1a;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
}
.auth-login-btn:hover { background: var(--gold); color: #1a1a1a; }
.auth-user { color: var(--text); font-size: 13px; display: inline-flex; align-items: center; gap: 4px; }
.auth-icon-btn {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-mute);
  font-size: 15px;
  cursor: pointer;
}
.auth-icon-btn:hover { color: var(--gold); border-color: var(--gold-soft); }

/* ============== 登录/注册页 ============== */
.auth-wrap { display: flex; justify-content: center; padding: 30px 0; }
.auth-box {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.auth-tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.auth-tab {
  flex: 1;
  padding: 10px;
  cursor: pointer;
  color: var(--text-mute);
  border-bottom: 2px solid transparent;
  font-size: 15px;
}
.auth-tab.active { color: var(--gold); border-bottom-color: var(--gold); }
.form-field { margin-bottom: 16px; text-align: left; }
.form-field label { display: block; font-size: 13px; color: var(--text-mute); margin-bottom: 6px; }
.form-field input, .form-field select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
}
.form-field input:focus, .form-field select:focus { outline: none; border-color: var(--gold-soft); }
.form-hint { font-size: 12px; color: var(--text-dim); margin-top: 6px; }
/* 投资记录录入表单：响应式多列网格 */
.holdings-form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 14px;
}
@media (max-width: 720px) {
  .holdings-form-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .holdings-form-grid { grid-template-columns: 1fr; }
}
.auth-error {
  display: none;
  padding: 8px 12px;
  background: rgba(239,68,68,.12);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 13px;
  margin-bottom: 12px;
  text-align: left;
}
.auth-submit { width: 100%; padding: 11px; font-size: 15px; justify-content: center; }
.auth-tip { margin-top: 16px; font-size: 12px; color: var(--text-dim); line-height: 1.6; }
.switch-row { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text); cursor: pointer; line-height: 1.6; }
.switch-row input[type="checkbox"] { width: 16px; height: 16px; margin-top: 2px; accent-color: var(--gold-soft); flex-shrink: 0; }

/* 移动端：登录区收缩 */
@media (max-width: 720px) {
  .auth-area { margin-left: auto; }
  .auth-user { display: none; }
}