/* tradebot dashboard.
   Dark-first, no framework, no external fonts. Built to be read at a glance on
   a phone at 2am as much as on a desktop. */

:root {
  --bg: #0d1117;
  --bg-raised: #161b22;
  --bg-input: #0b0f14;
  --border: #262d36;
  --border-strong: #39414d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #2f81f7;
  --green: #3fb950;
  --red: #f85149;
  --amber: #d29922;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --bg-raised: #ffffff;
    --bg-input: #ffffff;
    --border: #d8dee4;
    --border-strong: #b8c0c8;
    --text: #1f2328;
    --text-dim: #636c76;
    --green: #1a7f37;
    --red: #cf222e;
    --amber: #9a6700;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--text-dim); font-size: 12px; }
code {
  font-family: var(--mono);
  background: var(--bg-input);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ---------------- login ---------------- */

.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.login-card h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.login-sub { margin: 4px 0 24px; color: var(--text-dim); font-size: 13px; }
.login-card label { display: block; margin-bottom: 6px; font-size: 12px; color: var(--text-dim); }
.login-card input { margin-bottom: 16px; }
.login-card button { width: 100%; }

input, select {
  width: 100%;
  padding: 9px 11px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
}
input:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}

.error {
  color: var(--red);
  font-size: 13px;
  margin: 12px 0 0;
}

/* ---------------- chrome ---------------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }

.dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--red);
  flex: none;
}
.dot.on { background: var(--green); box-shadow: 0 0 8px var(--green); }

.badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 7px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  text-transform: uppercase;
}
.badge-live { background: var(--red); border-color: var(--red); color: #fff; }
.badge-demo { background: transparent; border-color: var(--accent); color: var(--accent); }
.badge-warn { background: var(--amber); border-color: var(--amber); color: #000; }

.tabs { display: flex; gap: 2px; }
.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  padding: 6px 12px;
  font: inherit;
  cursor: pointer;
  border-radius: 4px 4px 0 0;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  font-size: 13px;
}
.banner-danger { background: rgba(248, 81, 73, 0.15); border-bottom: 1px solid var(--red); }
.banner-warn { background: rgba(210, 153, 34, 0.15); border-bottom: 1px solid var(--amber); }
.banner strong { margin-right: 8px; }
.banner button { margin-left: auto; }

/* ---------------- layout ---------------- */

.tab-panel {
  padding: 20px;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { gap: 10px; }
  .tab-panel { padding: 12px; }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
  .topbar-right .muted { display: none; }
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.card-head h2 { margin: 0; font-size: 13px; font-weight: 600; letter-spacing: 0.02em; }
.card-head h3 { margin: 0; font-size: 12px; font-weight: 600; color: var(--text-dim); }

/* ---------------- stats ---------------- */

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-value { font-size: 26px; font-weight: 600; font-family: var(--mono); letter-spacing: -0.02em; }
.stat-value-sm { font-size: 17px; }
.stat-sub { font-size: 12px; color: var(--text-dim); font-family: var(--mono); }

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

/* ---------------- gauges ---------------- */

.gauge {
  position: relative;
  height: 22px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.gauge-sm { height: 12px; }

.gauge-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--red), var(--amber) 45%, var(--green));
  transition: width 0.4s ease;
}
.gauge-fill-warn { background: linear-gradient(90deg, var(--green), var(--amber) 60%, var(--red)); }

.gauge-marker {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--text);
  opacity: 0.5;
}

.gauge-legend {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-dim);
  flex-wrap: wrap;
}
.gauge-legend b { font-family: var(--mono); color: var(--text); font-weight: 500; }

.daily-loss { margin-top: 18px; }

/* ---------------- chart ---------------- */

.chart { width: 100%; height: 180px; display: block; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart-area { fill: var(--accent); opacity: 0.12; }
.chart-base { stroke: var(--border-strong); stroke-width: 1; stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.chart-floor { stroke: var(--red); stroke-width: 1; stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; }

/* ---------------- tables ---------------- */

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
}
.table tbody tr:last-child td { border-bottom: none; }
.table td.wrap { font-family: var(--sans); white-space: normal; }

.table-scroll { overflow-x: auto; max-height: 460px; overflow-y: auto; }

.empty { color: var(--text-dim); font-size: 13px; text-align: center; padding: 16px 0; margin: 0; }

/* ---------------- buttons ---------------- */

.btn {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 14px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; filter: none; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-danger { background: var(--red); }
.btn-warn { background: var(--amber); color: #000; }

.control-row { display: flex; gap: 10px; flex-wrap: wrap; }
.hint { color: var(--text-dim); font-size: 12px; margin: 12px 0 0; }

/* ---------------- editors ---------------- */

.kv-editor { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.kv-row { display: grid; grid-template-columns: 1fr 130px; gap: 10px; align-items: center; }
.kv-row label { font-size: 12px; color: var(--text-dim); font-family: var(--mono); word-break: break-all; }
.kv-row input { padding: 6px 9px; font-size: 13px; font-family: var(--mono); }

/* ---------------- backtest form ---------------- */

.bt-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}
.bt-form .field-wide { grid-column: span 3; }
.bt-form button { grid-column: span 1; }
.field label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 5px; }

@media (max-width: 900px) {
  .bt-form { grid-template-columns: 1fr 1fr; }
  .bt-form .field-wide { grid-column: span 2; }
  .bt-form button { grid-column: span 2; }
}

/* ---------------- decision panel ---------------- */

.decision {
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--bg-input);
}
.decision-execute { border-left-color: var(--green); }
.decision-resized { border-left-color: var(--accent); }
.decision-skipped { border-left-color: var(--text-dim); }
.decision-failed  { border-left-color: var(--red); }

.decision-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.decision-title { font-weight: 600; font-family: var(--mono); font-size: 14px; }
.decision-verdict {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
}
.verdict-execute { background: var(--green); color: #04180a; }
.verdict-resized { background: var(--accent); color: #fff; }
.verdict-skipped { background: var(--border-strong); color: var(--text); }
.verdict-failed  { background: var(--red); color: #fff; }
.decision-time { margin-left: auto; font-size: 11px; color: var(--text-dim); font-family: var(--mono); }

.decision-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--mono);
  margin-bottom: 10px;
}
.decision-meta b { color: var(--text); font-weight: 500; }

/* The gate chain — the point of the whole panel. */
.gates { display: flex; flex-direction: column; gap: 1px; }
.gate {
  display: grid;
  grid-template-columns: 18px 150px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 4px 0;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}
.gate:last-child { border-bottom: none; }
.gate-icon { font-size: 12px; line-height: 1.4; text-align: center; }
.gate-pass .gate-icon { color: var(--green); }
.gate-fail .gate-icon { color: var(--red); }
.gate-resize .gate-icon { color: var(--accent); }
.gate-info .gate-icon { color: var(--text-dim); }
.gate-label { color: var(--text-dim); }
.gate-fail .gate-label { color: var(--red); font-weight: 600; }
.gate-detail { font-family: var(--mono); font-size: 11px; word-break: break-word; }

@media (max-width: 620px) {
  .gate { grid-template-columns: 18px 1fr; }
  .gate-detail { grid-column: 2; color: var(--text-dim); }
}

.filters { display: flex; gap: 6px; }
.chip {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 3px 11px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.chip:hover { color: var(--text); }
.chip-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.bar-cell { min-width: 90px; }
.mini-bar {
  height: 6px;
  background: var(--red);
  border-radius: 3px;
  min-width: 2px;
}

/* ---------------- backtest pickers ---------------- */

.bt-pickers {
  display: grid;
  grid-template-columns: 1.4fr 1.6fr 0.9fr;
  gap: 14px;
  align-items: start;
  margin-bottom: 14px;
}
.bt-pickers .field-narrow { min-width: 0; }
.field-note {
  margin: 6px 0 0;
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.4;
}

@media (max-width: 900px) {
  .bt-pickers { grid-template-columns: 1fr; }
}

.params-details {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 14px;
  background: var(--bg-input);
}
.params-details summary {
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  list-style: revert;
}
.params-details[open] summary { margin-bottom: 12px; }
.kv-editor-wide {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 8px 16px;
}
.kv-editor-wide .kv-row { grid-template-columns: 1fr 96px; }

.bt-actions { margin-bottom: 4px; }

.upload-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
  flex-wrap: wrap;
}
.upload-row input[type=file] { flex: 1; min-width: 200px; }

.row-action {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
}
.row-action:hover { color: var(--red); background: rgba(248,81,73,0.12); }

/* ---------------- modal ---------------- */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 20px;
}
.modal-card {
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 420px;
  width: 100%;
}
.modal-card h3 { margin: 0 0 8px; font-size: 16px; }
.modal-card p { margin: 0 0 16px; font-size: 13px; color: var(--text-dim); }
.modal-card label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 6px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }

/* ---------------- toasts ---------------- */

.toasts {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
  max-width: min(420px, calc(100vw - 32px));
}
.toast {
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  animation: slide-in 0.18s ease;
}
.toast-ok { border-left-color: var(--green); }
.toast-err { border-left-color: var(--red); }
.toast-info { border-left-color: var(--accent); }

@keyframes slide-in {
  from { opacity: 0; transform: translateX(12px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}