:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #16191d;
  --muted: #6b7280;
  --border: #e4e7eb;
  --row-hover: #f8f9fb;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --gain: #15803d;
  --loss: #b91c1c;
  --danger: #b91c1c;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --card: #171b21;
    --text: #e6e8eb;
    --muted: #8f99a3;
    --border: #262c35;
    --row-hover: #1d222a;
    --accent: #3b82f6;
    --gain: #4ade80;
    --loss: #f87171;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

.muted { color: var(--muted); }
.tiny-text { font-size: 12px; }
.center { text-align: center; }
.num { text-align: right; }
.gain { color: var(--gain); }
.loss { color: var(--loss); }
.lbl { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

/* ---------- top bar ---------- */
.topbar {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  padding-top: max(10px, env(safe-area-inset-top));
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
.brand { display: flex; flex-direction: column; }
.brand h1 { font-size: 17px; margin: 0; line-height: 1.2; }
.summary {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.summary .stat { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border-top: 3px solid var(--border); }
.summary .stat strong { font-size: 28px; line-height: 1.1; letter-spacing: -0.01em; }
.summary .stat .sub { font-size: 13px; }
.summary .stat.up { border-top-color: var(--gain); }
.summary .stat.up strong, .summary .stat.up .sub { color: var(--gain); }
.summary .stat.down { border-top-color: var(--loss); }
.summary .stat.down strong, .summary .stat.down .sub { color: var(--loss); }
.actions { display: flex; gap: 6px; }

/* ---------- layout ---------- */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}
.side { display: grid; gap: 16px; }
#error { grid-column: 1 / -1; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.card-head h2 { font-size: 14px; margin: 0; font-weight: 600; }

.error { color: var(--danger); }
.error:not([hidden]):not(.tiny-text) { padding: 8px 12px; border: 1px solid var(--danger); border-radius: 8px; background: var(--card); }

/* ---------- positions ---------- */
.pos-header, .pos {
  display: grid;
  grid-template-columns: minmax(90px, 1.3fr) 1fr 1fr 1fr 1.1fr 1.3fr 28px;
  gap: 8px;
  align-items: center;
  padding: 8px 6px;
}
.pos-header {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-top: 0;
}
.pos { border-bottom: 1px solid var(--border); cursor: pointer; border-radius: 6px; }
.pos:hover { background: var(--row-hover); }
.pos:last-child, .pos.open { border-bottom-color: transparent; }
.pos .ticker { font-weight: 600; }
.pos .ticker small { display: block; font-weight: 400; font-size: 11px; color: var(--muted); }
.pos .cell small { display: block; font-size: 11px; color: var(--muted); }
.pos .chev { color: var(--muted); font-size: 12px; text-align: center; transition: transform 0.15s; }
.pos.open .chev { transform: rotate(180deg); }

.lots {
  margin: 0 6px 6px;
  padding: 8px 10px 10px;
  border-radius: 8px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.lot {
  display: grid;
  grid-template-columns: 84px 1fr 1fr 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 4px 0;
  font-size: 13px;
}
.lot.head { font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.lot .note { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lot-foot { display: flex; justify-content: flex-end; margin-top: 6px; }

/* ---------- forms ---------- */
form label {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 12px;
  color: var(--muted);
}
input[type="text"], input[type="number"], input[type="password"], select {
  font: inherit;
  font-size: 14px;
  padding: 7px 9px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 100%;
  min-width: 0;
}
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 0; border-color: var(--accent); }
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}
.fields .f-ticker { grid-column: span 1; }
form > label { margin-bottom: 8px; }
.form-foot { display: flex; flex-direction: column; gap: 6px; }
.form-foot .tiny-text { min-height: 1.2em; }

.seg { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 10px; }
.seg label { flex: 1; flex-direction: row; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span {
  display: block;
  width: 100%;
  text-align: center;
  padding: 6px 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}
.seg input:checked + span { background: var(--accent); color: var(--accent-text); }

button {
  font: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
  white-space: nowrap;
}
button:disabled { opacity: 0.5; cursor: default; }
button.ghost { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: transparent; color: var(--danger); border-color: transparent; padding: 2px 8px; font-size: 12px; }
button.danger:hover { border-color: var(--danger); }
button.icon {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  padding: 5px 9px;
  font-size: 15px;
  line-height: 1;
}
button.full { width: 100%; }

/* ---------- what-if ---------- */
.wi-main {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--bg);
  margin-bottom: 8px;
}
.wi-main strong { font-size: 18px; display: block; line-height: 1.2; }
.wi-main .arrow { color: var(--muted); font-size: 18px; }
.wi-sub { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.wi-sub strong { color: var(--text); margin-left: 3px; }
#whatif-hint { margin: 4px 0 0; }

/* ---------- modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 16px;
}
.modal-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  width: 100%;
  max-width: 340px;
  display: grid;
  gap: 10px;
}
.modal-card h2 { margin: 0; font-size: 16px; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  main { grid-template-columns: 1fr; }
  .side { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .side { grid-template-columns: 1fr; }
  .topbar { padding: 10px 14px; }
  .summary { grid-template-columns: 1fr 1fr; gap: 10px; }
  .summary #card-gain { grid-column: 1 / -1; }
  .summary .stat { padding: 10px 12px; }
  .summary .stat strong { font-size: 22px; }
  main { padding: 12px 12px 24px; gap: 12px; }

  /* positions become cards */
  .pos-header { display: none; }
  .pos {
    grid-template-columns: 1fr 1fr 1fr 20px;
    grid-template-areas:
      "ticker ticker ticker chev"
      "shares avg price chev"
      "value value gain chev";
    gap: 4px 8px;
    padding: 10px 8px;
  }
  .pos .ticker { grid-area: ticker; font-size: 15px; }
  .pos .ticker small { display: inline; margin-left: 6px; }
  .pos .c-shares { grid-area: shares; text-align: left; }
  .pos .c-avg { grid-area: avg; text-align: left; }
  .pos .c-price { grid-area: price; text-align: right; }
  .pos .c-value { grid-area: value; text-align: left; }
  .pos .c-gain { grid-area: gain; text-align: right; }
  .pos .chev { grid-area: chev; align-self: center; }
  .pos .cell::before { content: attr(data-l); display: block; font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

  .lot { grid-template-columns: 76px 1fr 1fr auto; }
  .lot .l-per { display: none; }

  .fields { grid-template-columns: 1fr 1fr; }
  .fields .f-ticker { grid-column: 1 / -1; }
  button { padding: 9px 14px; }
  input[type="text"], input[type="number"], input[type="password"], select { padding: 9px 10px; font-size: 16px; }
}