:root {
  color-scheme: light;
  --surface: #fcfcfb;
  --page: #f9f9f7;
  --card-bg: #ffffff;
  --input-bg: #ffffff;
  --ink: #0b0b0b;
  --ink-secondary: #52514e;
  --ink-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --accent-wash: rgba(42, 120, 214, 0.10);
  --pnl-positive: #006300;
  --pnl-negative: #d03b3b;
  --danger: #d03b3b;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --surface: #1a1a19;
    --page: #0d0d0d;
    --card-bg: #202020;
    --input-bg: #262626;
    --ink: #ffffff;
    --ink-secondary: #c3c2b7;
    --ink-muted: #898781;
    --gridline: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --accent-wash: rgba(57, 135, 229, 0.16);
    --pnl-positive: #0ca30c;
    --pnl-negative: #e66767;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.4;
}

.hidden { display: none !important; }

button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3 { margin: 0 0 12px; font-weight: 600; }
h2 { font-size: 16px; }

/* -- login -------------------------------------------------------------- */
.login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-card {
  width: 100%;
  max-width: 320px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.login-card label { font-size: 13px; color: var(--ink-secondary); }

/* -- generic controls ----------------------------------------------------- */
.text-input, .num-input, select.select-input, textarea.textarea-input {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--ink);
  width: 100%;
}
textarea.textarea-input { resize: vertical; min-height: 60px; }
.uppercase { text-transform: uppercase; }

.btn-primary, .btn-ghost, .btn-danger {
  border-radius: 8px;
  padding: 8px 14px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--ink); }
.btn-danger { background: transparent; border-color: var(--pnl-negative); color: var(--pnl-negative); }
.btn-ghost.active { background: var(--accent-wash); border-color: var(--accent); color: var(--accent); }

.form-error {
  color: var(--pnl-negative);
  font-size: 13px;
  margin: 0;
}

/* -- topbar ---------------------------------------------------------------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.market-toggle, .range-toggle {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.toggle-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 13px;
}
.toggle-btn.active {
  background: var(--accent-wash);
  border-color: var(--accent);
  color: var(--accent);
}
.topbar-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
}

/* -- layout ----------------------------------------------------------------- */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.chart-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 760px) {
  .chart-row { grid-template-columns: 3fr 2fr; }
}

/* -- KPI tiles ---------------------------------------------------------------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}
.kpi-tile {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}
.kpi-label { font-size: 12px; color: var(--ink-secondary); margin-bottom: 4px; }
.kpi-value { font-size: 20px; font-weight: 600; }
.kpi-sub { font-size: 12px; color: var(--ink-muted); margin-top: 2px; }

.pnl-pos { color: var(--pnl-positive); }
.pnl-neg { color: var(--pnl-negative); }

/* -- equity chart ------------------------------------------------------------- */
.chart-wrap { position: relative; }
.equity-svg { width: 100%; height: auto; display: block; }
.equity-line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.equity-dot { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.crosshair { stroke: var(--baseline); stroke-width: 1; }
.zero-line { stroke: var(--gridline); stroke-width: 1; }
/* Positioned via the `transform` attribute, not inline style - see app.js. */
.tooltip-bg { fill: var(--card-bg); stroke: var(--border); stroke-width: 1; }
.tooltip-value-text { fill: var(--ink); font-size: 11px; font-weight: 600; }
.tooltip-label-text { fill: var(--ink-secondary); font-size: 10px; }
.empty-state { color: var(--ink-muted); font-size: 13px; padding: 24px 0; text-align: center; }

/* -- calendar heatmap ---------------------------------------------------------- */
.calendar-header { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.calendar-title { font-weight: 600; flex: 1; text-align: center; }
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}
.calendar-dow { font-size: 11px; color: var(--ink-muted); text-align: center; padding-bottom: 2px; }
.calendar-cell {
  aspect-ratio: 1;
  border-radius: 6px;
  background: var(--page);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  padding: 2px;
  overflow: hidden;
}
.calendar-cell.empty { visibility: hidden; }
.calendar-day { font-size: 10px; color: var(--ink-muted); }
.calendar-value { font-weight: 600; font-size: 8px; }
/* Four fixed intensity steps (not a computed inline style), so the heatmap
   works under a CSP with no style-src 'unsafe-inline'. */
.calendar-cell.pnl-pos-cell.pnl-level-1 { background: rgba(12, 163, 12, 0.18); }
.calendar-cell.pnl-pos-cell.pnl-level-2 { background: rgba(12, 163, 12, 0.38); }
.calendar-cell.pnl-pos-cell.pnl-level-3 { background: rgba(12, 163, 12, 0.60); }
.calendar-cell.pnl-pos-cell.pnl-level-4 { background: rgba(12, 163, 12, 0.85); }
.calendar-cell.pnl-neg-cell.pnl-level-1 { background: rgba(208, 59, 59, 0.18); }
.calendar-cell.pnl-neg-cell.pnl-level-2 { background: rgba(208, 59, 59, 0.38); }
.calendar-cell.pnl-neg-cell.pnl-level-3 { background: rgba(208, 59, 59, 0.60); }
.calendar-cell.pnl-neg-cell.pnl-level-4 { background: rgba(208, 59, 59, 0.85); }
.calendar-cell.pnl-level-3 .calendar-day, .calendar-cell.pnl-level-3 .calendar-value,
.calendar-cell.pnl-level-4 .calendar-day, .calendar-cell.pnl-level-4 .calendar-value {
  color: #ffffff;
}

/* -- breakdown tables ----------------------------------------------------------- */
.breakdown-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 700px) {
  .breakdown-grid { grid-template-columns: 1fr 1fr; }
}
.breakdown-block h3 { font-size: 13px; color: var(--ink-secondary); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--gridline); white-space: nowrap; }
th { color: var(--ink-secondary); font-weight: 500; font-size: 12px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* -- trades list ------------------------------------------------------------------ */
.trades-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.trades-header .text-input { max-width: 240px; }
.trade-section-title { font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-muted); margin: 16px 0 6px; }
tr.trade-row { cursor: pointer; }
tr.trade-row:hover { background: var(--accent-wash); }
.status-chip {
  display: inline-block;
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 11px;
  border: 1px solid var(--border);
}
.status-chip.open { color: var(--accent); border-color: var(--accent); }

/* -- modal / drawer ----------------------------------------------------------------- */
.modal-root {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 16px;
  z-index: 100;
}
.modal-card {
  background: var(--card-bg);
  border-radius: 12px;
  width: 100%;
  max-width: 560px;
  padding: 20px;
  margin: 24px 0;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--ink-secondary); line-height: 1; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-grid .field-full { grid-column: 1 / -1; }
.field label { display: block; font-size: 12px; color: var(--ink-secondary); margin-bottom: 4px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  background: transparent;
  color: var(--ink-secondary);
}
.chip.active { background: var(--accent-wash); border-color: var(--accent); color: var(--accent); }
.preview-panel {
  margin-top: 14px;
  padding: 12px;
  border-radius: 10px;
  background: var(--page);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 8px;
  font-size: 13px;
}
.preview-panel .kpi-label { margin-bottom: 2px; }
.modal-actions { display: flex; justify-content: space-between; gap: 8px; margin-top: 16px; }
.modal-actions-right { display: flex; gap: 8px; margin-left: auto; }

@media (max-width: 480px) {
  .form-grid { grid-template-columns: 1fr; }
  .modal-card { padding: 14px; }
}