/* BlackHat_Trader — one monospace family, flat terminal surfaces, no
   shadows, no border-radius. Semantic color is reserved for money.
   See BRIEF.md §6 for the full design direction this implements. */

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../vendor/jetbrains-mono-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../vendor/jetbrains-mono-latin-500-normal.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../vendor/jetbrains-mono-latin-700-normal.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #000000;
  --panel: #0C0F12;
  --border: #1C2128;
  --text: #E7EDF3;
  --text-secondary: #8A94A0;
  --up: #00B26B;
  --down: #E5484D;
  --amber: #F0B90B;

  --fs-1: 13px;
  --fs-2: 15px;
  --fs-3: 18px;
  --fs-4: 24px;
  --fs-5: 40px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: var(--fs-2);
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text);
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 12px;
  cursor: pointer;
}
button:hover {
  border-color: var(--text-secondary);
}

select {
  font-family: inherit;
  font-size: inherit;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 6px 10px;
}

:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.pnl-pos { color: var(--up); }
.pnl-neg { color: var(--down); }

/* --- Header ------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 14px 20px;
}
.wordmark {
  font-weight: 700;
  font-size: var(--fs-3);
}
.cursor-blink {
  animation: blink 1s steps(1) infinite;
}
@media (prefers-reduced-motion: reduce) {
  .cursor-blink { animation: none; }
}
@keyframes blink {
  50% { opacity: 0; }
}

.mode-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
}
.mode-toggle button {
  border: none;
  border-right: 1px solid var(--border);
  padding: 6px 12px;
  color: var(--text-secondary);
}
.mode-toggle button:last-child { border-right: none; }
.mode-toggle button.is-active {
  color: var(--text);
  background: var(--panel);
}

.sample-badge {
  font-size: var(--fs-1);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 2px 8px;
}

.cta-binance {
  margin-left: auto;
  color: #0B0E00;
  background: var(--amber);
  border: 1px solid var(--amber);
  padding: 6px 14px;
  font-weight: 500;
  text-decoration: none;
}
.cta-binance:hover {
  filter: brightness(1.08);
}

/* --- Hero / equity -------------------------------------------------- */

.hero {
  padding: 32px 0 8px;
}
.hero-headline {
  font-size: var(--fs-5);
  font-weight: 700;
  margin: 4px 0;
}
.hero-meta {
  color: var(--text-secondary);
  font-size: var(--fs-1);
  display: flex;
  gap: 16px;
  align-items: center;
}
.equity-range-group {
  display: inline-flex;
  gap: 4px;
}
.equity-range-btn {
  padding: 3px 8px;
  font-size: var(--fs-1);
  color: var(--text-secondary);
}
.equity-range-btn.is-active {
  color: var(--text);
  border-color: var(--text-secondary);
}

.equity-chart {
  height: 260px;
  margin-top: 12px;
}

/* --- Stat grid -------------------------------------------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--border);
  margin: 24px 0;
}
.stat-cell {
  padding: 14px 16px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-cell:nth-child(5n) { border-right: none; }
.stat-label {
  color: var(--text-secondary);
  font-size: var(--fs-1);
}
.stat-value {
  font-size: var(--fs-3);
  margin-top: 4px;
}

/* --- Chart section ------------------------------------------------- */

.chart-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.tf-switcher {
  display: inline-flex;
  gap: 4px;
}
.tf-btn {
  padding: 4px 10px;
  font-size: var(--fs-1);
  color: var(--text-secondary);
}
.tf-btn.is-active {
  color: var(--text);
  border-color: var(--text-secondary);
}

.main-chart-wrap {
  position: relative;
}
.main-chart {
  height: 420px;
  max-height: 55vw;
}
@media (min-width: 800px) {
  .main-chart { max-height: none; height: 420px; }
}

.kline-notice {
  font-size: var(--fs-1);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 8px 12px;
  margin-top: 8px;
}

.chart-tooltip {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 8px 10px;
  font-size: var(--fs-1);
  min-width: 200px;
}
.chart-tooltip-row + .chart-tooltip-row {
  margin-top: 2px;
}

/* --- Trade table -------------------------------------------------- */

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-1);
}
th, td {
  padding: 8px 12px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--text-secondary);
  font-weight: 500;
  position: sticky;
  top: 0;
  background: var(--panel);
}
.trade-row {
  cursor: pointer;
}
.trade-row:hover {
  background: var(--panel);
}
.trade-row-partial {
  color: var(--text-secondary);
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: 16px 0;
}

/* --- Two-column: per-symbol + methodology -------------------------- */

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}
@media (max-width: 800px) {
  .split-section { grid-template-columns: 1fr; }
}

details.methodology summary {
  cursor: pointer;
  font-weight: 500;
}
.methodology-body {
  margin-top: 12px;
  color: var(--text-secondary);
  max-width: 78ch;
}
.methodology-body p {
  margin: 0 0 12px;
}

/* --- Sections generic ------------------------------------------------ */

section {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
h2 {
  font-size: var(--fs-2);
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0 0 12px;
}

/* --- Footer --------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--text-secondary);
  font-size: var(--fs-1);
}
.site-footer p {
  max-width: 78ch;
  margin: 0 0 8px;
}

/* --- Mobile --------------------------------------------------------- */

@media (max-width: 390px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-cell:nth-child(5n) { border-right: 1px solid var(--border); }
  .stat-cell:nth-child(2n) { border-right: none; }
  .hero-headline { font-size: 28px; }
}