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

:root {
  --bg: #0f1420;
  --panel: #161d2e;
  --panel2: #1c2540;
  --border: #2a3552;
  --text: #dfe6f3;
  --muted: #8b97b0;
  --green: #2ecc71;
  --red: #ff5c5c;
  --accent: #4d8dff;
  --atm: #223055;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 14px;
}

/* ---- top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-size: 20px; font-weight: 700; }
.brand span { color: var(--accent); }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
}
.topbar nav a.active, .topbar nav a:hover { color: var(--text); background: var(--panel2); }
.topbar-left { margin-inline-start: auto; display: flex; gap: 10px; align-items: center; }
.cash-chip {
  background: var(--panel2);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  font-weight: 600;
}
.delay-chip {
  background: #3a2f14;
  color: #ffce54;
  border: 1px solid #5c4a1e;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
}

main { padding: 16px 20px 60px; max-width: 1200px; margin: 0 auto; }

/* ---- toolbar / tabs ---- */
.toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.tabs-sep { color: var(--border); margin: 0 4px; }
.tab {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  text-decoration: none;
}
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.tab.view-only { border-style: dashed; }
.tab.dated { border-color: #6b5cff; }
.tab.dated.active { background: #6b5cff; border-color: #6b5cff; color: #fff; }
.meta { color: var(--muted); font-size: 12px; }

.index-strip {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  margin-bottom: 12px;
  font-size: 14px;
}
.delay-note { color: #ffce54; font-size: 12px; }

.notice {
  background: #3a2f14;
  border: 1px solid #5c4a1e;
  color: #ffe9b0;
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
}

/* ---- chain table ---- */
table.chain { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
table.chain th, table.chain td { padding: 6px 8px; text-align: center; border-bottom: 1px solid var(--border); }
table.chain thead th { background: var(--panel2); color: var(--muted); font-weight: 600; font-size: 12px; }
tr.grp th.call-h { color: var(--green); font-size: 14px; }
tr.grp th.put-h { color: var(--red); font-size: 14px; }
th.strike-h, td.strike { background: var(--panel2); font-weight: 700; }
tr.atm td { background: var(--atm); }
tr.atm td.strike { outline: 2px solid var(--accent); outline-offset: -2px; }
td.bid { color: var(--green); font-weight: 600; }
td.ask { color: var(--red); font-weight: 600; }
td.clickable { cursor: pointer; }
td.clickable:hover { background: var(--panel2); text-decoration: underline; }
td.qty, td.vol { color: var(--muted); font-size: 12px; }
td.loading { color: var(--muted); padding: 24px; }
.up { color: var(--green); }
.down { color: var(--red); }
.muted { color: var(--muted); }

/* ---- cards ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card span { color: var(--muted); font-size: 12px; }
.card b { font-size: 20px; }

h2 { font-size: 16px; margin: 18px 0 10px; color: var(--muted); }

/* ---- modal ---- */
.modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  min-width: 320px;
}
.modal h3 { margin-bottom: 14px; }
.om-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; gap: 16px; }
.om-row.total { border-top: 1px solid var(--border); padding-top: 10px; font-size: 16px; }
.om-row input {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
  width: 100px;
  font-size: 15px;
  text-align: center;
}
.om-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 14px; }

.btn {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
.btn:hover { filter: brightness(1.2); }
.btn.primary.buy { background: var(--green); border-color: var(--green); color: #06280f; font-weight: 700; }
.btn.primary.sell { background: var(--red); border-color: var(--red); color: #330a0a; font-weight: 700; }

.danger-zone { margin-top: 30px; display: flex; align-items: center; gap: 12px; color: var(--muted); }

/* ---- toast ---- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 50%;
  transform: translateX(50%);
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  z-index: 100;
  transition: opacity .3s;
}
.toast.ok { background: #12331e; border: 1px solid var(--green); color: var(--green); }
.toast.err { background: #33120f; border: 1px solid var(--red); color: var(--red); }
.toast.hidden { opacity: 0; pointer-events: none; }

.hidden { display: none !important; }
.toast.hidden { display: block !important; }

/* ---- strategy builder ---- */
.stg-bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.stg-bar .btn { padding: 6px 12px; font-size: 13px; }
.stg-qty { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; }
.stg-qty input {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 8px;
  width: 64px;
  text-align: center;
}
.stg-hint { font-size: 12px; margin-inline-start: auto; }
.stg-hint .bid { color: var(--green); }
.stg-hint .ask { color: var(--red); }

.stg-grid { display: grid; grid-template-columns: minmax(340px, 1fr) minmax(380px, 1.15fr); gap: 20px; align-items: start; }
@media (max-width: 980px) { .stg-grid { grid-template-columns: 1fr; } }

.stg-chain-scroll { max-height: 70vh; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; }
.stg-chain-scroll table.chain { border: none; border-radius: 0; }
.stg-chain-scroll thead th { position: sticky; top: 0; z-index: 2; }
table.chain.compact th, table.chain.compact td { padding: 4px 6px; font-size: 13px; }
tr.in-strategy td { box-shadow: inset 0 0 0 9999px rgba(107, 92, 255, .14); }
tr.in-strategy td.strike { font-weight: 800; color: #b3a9ff; }

.stg-summary { position: sticky; top: 68px; }
.stg-summary .cards { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); margin: 14px 0 0; }
.stg-summary .card b { font-size: 16px; }
.legQty {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 5px;
  padding: 3px 6px;
  width: 58px;
  text-align: center;
  font-size: 13px;
}
.btn.tiny { padding: 3px 9px; font-size: 12px; }
.payoff-head { display: flex; align-items: center; justify-content: space-between; margin: 18px 0 6px; }
.zoom-group { display: flex; gap: 4px; }
.zoom-group .btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
#payoffWrap { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 8px; }
#payoff { width: 100%; display: block; }
.readout {
  text-align: center;
  padding: 6px 4px 2px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 4px;
}
#pnlTable { margin-top: 12px; }
#pnlTable td:first-child { text-align: right; }
#pnlTable td .muted { font-size: 11px; }

/* ---- login ---- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 34px;
  width: 360px;
}
.login-box label { display: block; color: var(--muted); font-size: 13px; margin: 12px 0 4px; }
.login-box input {
  width: 100%;
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 15px;
}
.login-box code { direction: ltr; display: inline-block; background: var(--panel2); padding: 2px 8px; border-radius: 6px; margin-top: 6px; font-size: 12px; }

/* ---- topbar user ---- */
.user-chip { color: var(--accent); font-weight: 600; }
a.logout { color: var(--muted); text-decoration: none; font-size: 13px; }
a.logout:hover { color: var(--red); }

/* ---- admin ---- */
.admin-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.admin-form input[type="text"] {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  width: 180px;
}
.admin-dep { white-space: nowrap; }
.admin-dep input {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 8px;
  width: 90px;
  font-size: 13px;
}
.admin-actions { white-space: nowrap; }
.admin-actions .btn, .admin-dep .btn { padding: 5px 10px; font-size: 12px; }