*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --green: #3fb950; --red: #f85149; --yellow: #d29922; --accent: #1f6feb;
  --text: #c9d1d9; --text-muted: #8b949e; --card-bg: #161b22; --border: #30363d;
  --bg: #0d1117; --hover: #1f2937;
}
html { -webkit-text-size-adjust: 100%; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.4; }
a { color: #58a6ff; }

.page { display: none; }
.page.active { display: block; }

.login-box { max-width: 360px; margin: 12vh auto; padding: 2rem; background: var(--card-bg); border-radius: 10px; text-align: center; }
.login-box h1 { margin-bottom: 1.5rem; font-size: 1.5rem; }
.login-box input { width: 100%; padding: .7rem; margin-bottom: 1rem; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 1rem; }
.login-box button { width: 100%; padding: .7rem; background: #238636; border: none; border-radius: 8px; color: #fff; font-size: 1rem; cursor: pointer; }

header { background: var(--card-bg); border-bottom: 1px solid var(--border); padding: .5rem 1rem; display: flex; align-items: center; gap: 1rem; position: sticky; top: 0; z-index: 50; }
header h1 { font-size: 1.1rem; white-space: nowrap; }
#top-nav { display: flex; gap: .25rem; flex-wrap: wrap; align-items: center; }
.tab-btn { background: none; border: none; color: var(--text-muted); padding: .45rem .8rem; cursor: pointer; border-radius: 6px; font-size: .85rem; min-height: 36px; }
.tab-btn:hover { background: var(--hover); color: var(--text); }
.tab-btn.active { background: var(--accent); color: #fff; }
#logout-btn { margin-left: auto; color: var(--red); }

#main-content { padding: 1rem; max-width: 1200px; margin: 0 auto; }
.tab-content { display: none; }
.tab-content.active { display: block; }

.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-bottom: 1rem; }
.card h2 { font-size: 1rem; margin-bottom: .75rem; color: #f0f6fc; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.stat { margin-bottom: .5rem; }
.stat-label { color: var(--text-muted); font-size: .8rem; }
.stat-value { font-size: 1.1rem; font-weight: 600; }

table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th, td { padding: .5rem .75rem; text-align: left; border-bottom: 1px solid #21262d; }
th { color: var(--text-muted); font-weight: 600; text-transform: uppercase; font-size: .75rem; }
tr:hover td { background: var(--hover); }

.form-group { margin-bottom: .75rem; display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.form-group label { min-width: 140px; color: var(--text-muted); font-size: .85rem; }
.form-group input, .form-group select { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); padding: .4rem .5rem; font-size: .85rem; width: 120px; }
.form-group input[type=checkbox] { width: auto; }

.override-tag { background: var(--yellow); color: #000; border-radius: 4px; padding: .1rem .4rem; font-size: .7rem; font-weight: 600; margin-left: .25rem; }
.diff-global { color: var(--text-muted); font-size: .75rem; }

.badge { display: inline-block; padding: .15rem .5rem; border-radius: 10px; font-size: .75rem; font-weight: 600; white-space: nowrap; }
.badge-buy, .badge-signal { background: #238636; color: #fff; }
.badge-sell, .badge-error { background: #da3633; color: #fff; }
.badge-info, .badge-action, .badge-exit { background: var(--accent); color: #fff; }
.badge-warn { background: var(--yellow); color: #000; }
.badge-trade { background: #a371f7; color: #fff; }

.chart-controls { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; font-size: .75rem; }
.chart-controls label { color: var(--text-muted); white-space: nowrap; }
.chart-controls select, .chart-controls input { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; color: var(--text); padding: 3px 6px; font-size: .75rem; }
#chart-container { width: 100%; min-height: 300px; border-radius: 4px; }

.pnl-pos { color: var(--green); }
.pnl-neg { color: var(--red); }

#logs-box { max-height: 500px; overflow-y: auto; font-family: monospace; font-size: .8rem; -webkit-overflow-scrolling: touch; }
.log-entry { padding: .25rem .5rem; border-bottom: 1px solid #21262d; word-break: break-word; }
.log-entry .ts { color: var(--text-muted); margin-right: .5rem; }

.emergency-btn { background: #da3633; color: #fff; border: none; padding: .6rem 1.2rem; border-radius: 6px; font-size: .9rem; cursor: pointer; min-height: 40px; }
.emergency-btn:hover { background: #b62324; }

#toast { position: fixed; bottom: 1rem; right: 1rem; z-index: 999; max-width: calc(100vw - 2rem); }
.toast-msg { background: var(--accent); color: #fff; padding: .6rem 1rem; border-radius: 6px; margin-top: .5rem; animation: fadein .3s; word-break: break-word; }
.toast-msg.error { background: #da3633; }
@keyframes fadein { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.accordion { border: 1px solid var(--border); border-radius: 6px; margin-bottom: .5rem; }
.accordion-header { background: var(--hover); padding: .5rem .75rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: .5rem; min-height: 40px; }
.accordion-body { padding: .75rem; display: none; }
.accordion.open .accordion-body { display: block; }

.sub-tab-btn { flex: 0 0 auto; padding: 6px 16px; background: transparent; border: none; border-bottom: 2px solid transparent; color: var(--text-muted); cursor: pointer; font-size: .75rem; font-weight: 600; min-height: 34px; }
.sub-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.sub-tab-btn:hover { color: var(--text); }

.filter-bar { display: flex; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.filter-bar input, .filter-bar select { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); padding: .4rem .5rem; font-size: .85rem; }

.opt-metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; font-size: .7rem; margin-bottom: 8px; }

.trade-group { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.trade-group-header { display: flex; align-items: center; gap: .5rem; font-size: .85rem; flex-wrap: wrap; }
.trade-group-detail { display: none; }
.trade-group-detail.open { display: block; }
.trade-group-detail table { margin: 0; font-size: .8rem; }
.trade-decision { border-top: 1px solid #21262d; }

.card.paper-mode { border: 1px solid var(--yellow); background: linear-gradient(135deg, #1a1a1a 0%, #2a1f0a 100%); box-shadow: 0 0 12px rgba(210, 153, 34, 0.15); }
.card.paper-mode h2 { color: var(--yellow); }
.paper-badge { display: inline-block; background: var(--yellow); color: #000; padding: 0.15rem 0.6rem; border-radius: 4px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-left: 6px; vertical-align: middle; }

@media (max-width: 768px) {
  header { gap: .5rem; flex-wrap: wrap; padding: .4rem .6rem; }
  header h1 { font-size: 1rem; }
  #top-nav { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; scrollbar-width: none; width: 100%; }
  #top-nav::-webkit-scrollbar { display: none; }
  #logout-btn { margin-left: 0; }
  #main-content { padding: .5rem; }
  .card { padding: .6rem; }
  .card h2 { font-size: .95rem; margin-bottom: .5rem; }
  .grid-2 { grid-template-columns: 1fr; gap: .5rem; }
  .stat-value { font-size: 1rem; }
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; white-space: nowrap; }
  th, td { padding: .35rem .45rem; }
  .form-group label { min-width: 110px; font-size: .8rem; }
  .form-group input, .form-group select { width: 110px; font-size: .8rem; }
  #logs-box { max-height: 45vh; font-size: .72rem; }
  #toast { right: .5rem; left: .5rem; bottom: .5rem; max-width: none; }
  .opt-metrics-grid { grid-template-columns: repeat(2, 1fr); font-size: .68rem; }
  .accordion-header { padding: .45rem .55rem; }
  .accordion-body { padding: .55rem; }
  .sub-tab-btn { padding: 5px 12px; font-size: .72rem; }
  .emergency-btn { width: 100%; text-align: center; }
  .chart-controls { gap: 5px; font-size: .72rem; }
  .chart-controls select, .chart-controls input { font-size: .72rem; padding: 3px 5px; }
  #chart-container { min-height: 260px; }
  .trade-group-header span { font-size: .78rem; }
  .badge { font-size: .68rem; padding: .12rem .4rem; }
}

@media (max-width: 480px) {
  header h1 { font-size: .95rem; }
  .tab-btn { font-size: .78rem; padding: .3rem .55rem; }
  .card { padding: .5rem; }
  .card h2 { font-size: .9rem; }
  .stat-value { font-size: .95rem; }
  .stat-label { font-size: .72rem; }
  table { font-size: .72rem; }
  th, td { padding: .25rem .35rem; }
  th { font-size: .65rem; }
  .form-group { flex-direction: column; align-items: stretch; gap: .25rem; }
  .form-group label { min-width: auto; font-size: .78rem; }
  .form-group input, .form-group select { width: 100%; }
  .grid-2 { gap: .4rem; }
  .opt-metrics-grid { grid-template-columns: 1fr 1fr; }
  .sub-tab-btn { padding: 4px 9px; font-size: .68rem; }
  .accordion-header { flex-direction: column; align-items: flex-start; gap: 4px; }
  .login-box { margin: 6vh auto; padding: 1.25rem; }
}