:root {
  --bg: #0b0d12;
  --sidebar: #12151c;
  --card: #181c25;
  --border: #252a36;
  --text: #e8eaed;
  --muted: #7d8496;
  --green: #00c896;
  --red: #ff5b5b;
  --blue: #4d9fff;
  --yellow: #ffc857;
  --sidebar-w: 220px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: none; }
body.authed { display: flex; }
#auth-loading { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); color: var(--muted); z-index: 999; }

/* 左侧菜单 */
.sidebar {
  width: var(--sidebar-w); min-height: 100vh; background: var(--sidebar);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
  position: fixed; left: 0; top: 0; bottom: 0; z-index: 50;
}
.sidebar-logo { padding: 20px 18px 16px; border-bottom: 1px solid var(--border); }
.sidebar-logo h1 { font-size: 1rem; font-weight: 700; }
.sidebar-logo p { font-size: .72rem; color: var(--muted); margin-top: 4px; }
.nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.nav-group { margin-bottom: 6px; }
.nav-group-head {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 8px 12px; font-size: .72rem; font-weight: 700;
  color: var(--muted); letter-spacing: .03em; background: none; border: none;
  cursor: pointer; border-radius: 6px; transition: .15s;
}
.nav-group-head:hover { color: var(--text); background: rgba(255,255,255,.03); }
.nav-group-head::after { content: '▾'; font-size: .65rem; opacity: .7; transition: .15s; }
.nav-group:not(.open) .nav-group-body { display: none; }
.nav-group:not(.open) .nav-group-head::after { transform: rotate(-90deg); }
.nav-group-body { padding: 2px 0 4px 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px 9px 20px;
  border-radius: 8px; cursor: pointer; font-size: .86rem; color: var(--muted);
  border: none; background: none; width: 100%; text-align: left; margin-bottom: 2px;
  transition: .15s;
}
.nav-item:hover { background: rgba(255,255,255,.04); color: var(--text); }
.nav-item.active { background: rgba(77,159,255,.15); color: var(--blue); font-weight: 600; }
.nav-item .icon { font-size: 1.1rem; width: 22px; text-align: center; }
.sidebar-foot { padding: 14px; border-top: 1px solid var(--border); }
.sidebar-foot .user { font-size: .78rem; color: var(--muted); margin-bottom: 8px; }

/* 主内容区 */
.main { margin-left: var(--sidebar-w); flex: 1; min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--card);
  display: flex; justify-content: space-between; align-items: center;
}
.topbar h2 { font-size: 1.05rem; font-weight: 600; }
.content { padding: 20px 24px; flex: 1; overflow-y: auto; }
.page { display: none; }
.page.active { display: block; }

/* 通用组件 */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(155px, 1fr)); gap: 14px; margin-bottom: 20px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.card-label { color: var(--muted); font-size: .73rem; margin-bottom: 6px; }
.card-value { font-size: 1.35rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.card-sub { font-size: .76rem; color: var(--muted); margin-top: 4px; }
.positive { color: var(--green); }
.negative { color: var(--red); }
.section-title { font-size: .92rem; font-weight: 600; margin-bottom: 14px; }
.hint { color: var(--muted); font-size: .78rem; line-height: 1.5; margin-bottom: 12px; }

table { width: 100%; border-collapse: collapse; font-size: .82rem; }
th { text-align: left; color: var(--muted); padding: 9px 10px; border-bottom: 1px solid var(--border); font-weight: 500; white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
tr:hover td { background: rgba(255,255,255,.02); }
.tag { display: inline-block; padding: 2px 7px; border-radius: 4px; font-size: .7rem; font-weight: 600; }
.t-bull { background: rgba(0,200,150,.15); color: var(--green); }
.t-bear { background: rgba(255,91,91,.15); color: var(--red); }
.t-neu { background: rgba(125,132,150,.15); color: var(--muted); }
.sig-long { color: var(--green); }
.sig-short { color: var(--red); }

.btn { padding: 7px 14px; border-radius: 6px; border: none; cursor: pointer; font-size: .82rem; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-red { background: rgba(255,91,91,.15); color: var(--red); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.btn-sm { padding: 4px 10px; font-size: .75rem; }
input, select {
  padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: .85rem;
}
.form-row { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }

/* 行情 */
.market-wrap { max-height: calc(100vh - 160px); overflow-y: auto; border: 1px solid var(--border); border-radius: 10px; }
.market-wrap thead { position: sticky; top: 0; background: var(--card); z-index: 2; }
.mkt-row { cursor: pointer; }
.price-cell { font-weight: 600; }
.flash-up { animation: flashUp .5s; }
.flash-down { animation: flashDown .5s; }
@keyframes flashUp { from { background: rgba(0,200,150,.25); } to { background: transparent; } }
@keyframes flashDown { from { background: rgba(255,91,91,.25); } to { background: transparent; } }
.live-dot { display: inline-block; width: 6px; height: 6px; background: var(--green); border-radius: 50%; animation: pulse 1.5s infinite; margin-right: 5px; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

/* 持仓卡片 */
.pos-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.pos-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; cursor: pointer; transition: .15s; }
.pos-card:hover { border-color: var(--blue); }
.pos-card .head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.pos-card .sym { font-size: 1.1rem; font-weight: 700; }
.pos-card .pnl-big { font-size: 1.4rem; font-weight: 700; margin: 8px 0; }
.pos-card .row { display: flex; justify-content: space-between; font-size: .78rem; color: var(--muted); margin-top: 4px; }

/* 进度条 */
.progress { background: var(--border); border-radius: 6px; height: 8px; overflow: hidden; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--blue), var(--green)); transition: .4s; }

/* 弹窗 */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.75); display: none; align-items: center; justify-content: center; z-index: 200; padding: 20px; }
.modal.show { display: flex; }
.modal-box { background: var(--card); border: 1px solid var(--border); border-radius: 12px; width: 100%; max-width: 960px; max-height: 90vh; overflow-y: auto; padding: 20px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
#chart-box, #plan-chart-box { height: 300px; margin-bottom: 14px; }
.tf-btns { display: flex; gap: 6px; margin-bottom: 12px; }
.tf-btns button { padding: 5px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--muted); cursor: pointer; font-size: .78rem; }
.tf-btns button.active { background: var(--blue); color: #fff; border-color: var(--blue); }
.analysis-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin-bottom: 12px; }
canvas { width: 100%; height: 170px; }

/* 设置页 */
.setting-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: .85rem; }
.setting-row span:first-child { color: var(--muted); }
.cmd-box { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 14px; font-family: monospace; font-size: .8rem; color: var(--green); margin-top: 8px; }

/* 筛选 */
.filter-bar { display: flex; gap: 8px; margin-bottom: 14px; }
.filter-btn { padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer; font-size: .8rem; }
.filter-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

.filter-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* 公告 */
.ann-item { padding: 10px 12px; border-radius: 8px; margin-bottom: 8px; border-left: 3px solid var(--blue); background: rgba(77,159,255,.08); }
.ann-item.warning { border-color: var(--yellow); background: rgba(255,200,87,.08); }
.ann-item.success { border-color: var(--green); background: rgba(0,200,150,.08); }
.ann-item h4 { font-size: .88rem; margin-bottom: 4px; }
.ann-item p { font-size: .8rem; color: var(--muted); line-height: 1.5; }

/* 排行榜 */
.rank-list .rank-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: .85rem; }
.rank-list .rank-row:last-child { border-bottom: none; }
.rank-num { width: 22px; color: var(--muted); font-size: .75rem; }

/* 信号中心 */
.signal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin-bottom: 16px; }
.signal-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px; cursor: pointer; transition: .15s; }
.signal-card:hover { border-color: var(--blue); }
.signal-card .head { display: flex; justify-content: space-between; margin-bottom: 8px; }
.signal-card .conf { font-size: 1.1rem; font-weight: 700; }

@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-logo p, .nav-item span:last-child, .sidebar-foot .user { display: none; }
  .nav-item { justify-content: center; padding: 12px; }
  .main { margin-left: 60px; }
  .grid-2 { grid-template-columns: 1fr; }
}