/* ==========================================================================
   Loot Table Lab
   Dark by default (it is a game-dev tool), with a full light theme on
   [data-theme="light"]. Every colour goes through a custom property so the
   canvas charts can read the same palette out of the document.
   ========================================================================== */

:root {
  --bg: #0e1118;
  --bg-2: #131824;
  --panel: #161c29;
  --panel-2: #1b2231;
  --border: #262e40;
  --border-soft: #1f2635;
  --text: #e7eaf2;
  --text-dim: #97a0b5;
  --text-faint: #6b748a;
  --accent: #5b8cff;
  --accent-ink: #ffffff;
  --accent-soft: #1d2a4d;
  --good: #3ddc97;
  --warn: #ffb454;
  --danger: #ff6b81;

  --grid: #222a3a;
  --chart-bar: #5b8cff;
  --chart-bar-soft: #1e2a4a;
  --chart-highlight: #ffb454;
  --chart-empirical: #3ddc97;
  --chart-marker: #ff6b81;
  --chart-font: 12px ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-2: #eaeef7;
  --panel: #ffffff;
  --panel-2: #f7f9fd;
  --border: #d9e0ee;
  --border-soft: #e6ebf5;
  --text: #161c2a;
  --text-dim: #5a6480;
  --text-faint: #8a93a8;
  --accent: #2f6bff;
  --accent-ink: #ffffff;
  --accent-soft: #e2eaff;
  --good: #0f9d63;
  --warn: #c07600;
  --danger: #d63a55;

  --grid: #e6ebf5;
  --chart-bar: #2f6bff;
  --chart-bar-soft: #dbe5ff;
  --chart-highlight: #e08a00;
  --chart-empirical: #0f9d63;
  --chart-marker: #d63a55;
  --shadow: 0 1px 2px rgba(20, 30, 60, .06), 0 8px 24px -14px rgba(20, 30, 60, .28);
}

* { box-sizing: border-box; }

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(900px 500px at 15% -10%, color-mix(in srgb, var(--accent) 12%, transparent), transparent),
    radial-gradient(700px 400px at 95% 0%, color-mix(in srgb, var(--good) 8%, transparent), transparent);
  background-attachment: fixed;
}

h1, h2, h3 { margin: 0; font-weight: 620; letter-spacing: -0.01em; }
em { font-style: normal; font-family: var(--mono); color: var(--text); }

/* ---------------------------------------------------------------- topbar */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand h1 { font-size: 17px; }
.brand-sub { margin: 0; font-size: 12px; color: var(--text-dim); }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  font-size: 15px;
  color: var(--accent-ink);
  background: linear-gradient(140deg, var(--accent), color-mix(in srgb, var(--accent) 55%, var(--good)));
  box-shadow: 0 4px 14px -4px color-mix(in srgb, var(--accent) 70%, transparent);
}

.topbar-actions { display: flex; gap: 8px; align-items: center; }

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

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 22px 28px;
  align-items: start;
  max-width: 1680px;
  width: 100%;
  margin: 0 auto;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 76px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  padding-right: 4px;
}

.content { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

@media (max-width: 1080px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; max-height: none; }
}

/* ---------------------------------------------------------------- panels */

.panel, .card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel { padding: 14px; }
.card { padding: 16px; }

.panel-head, .card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.panel-head h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-dim); }
.card-head h3 { font-size: 15px; }
.card-sub { margin: 3px 0 0; font-size: 12.5px; color: var(--text-dim); }
.card-tools { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }

.hint { margin: 0 0 10px; font-size: 12px; color: var(--text-faint); line-height: 1.5; }
.hint-sm { margin: 6px 0 0; font-size: 11.5px; }

.pill {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  white-space: nowrap;
}

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

.btn {
  font: inherit;
  font-size: 12.5px;
  font-weight: 550;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  cursor: pointer;
  transition: background .14s, border-color .14s, transform .06s;
  white-space: nowrap;
}
.btn:hover { background: color-mix(in srgb, var(--accent) 14%, var(--panel-2)); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; background: var(--panel-2); border-color: var(--border); }
.btn:focus-visible, .input:focus-visible, .tab:focus-visible, input[type="range"]:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 86%, white); border-color: color-mix(in srgb, var(--accent) 86%, white); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 16%, var(--panel-2)); border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }
.btn-icon { padding: 7px 10px; font-size: 14px; line-height: 1; }
.button-row { display: flex; gap: 6px; margin-top: 10px; }
.button-row .btn { flex: 1; padding: 7px 6px; }

/* ------------------------------------------------------------- item list */

.item-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }

.item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  cursor: pointer;
  transition: border-color .14s, background .14s;
}
.item:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.item[aria-selected="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--panel-2));
}
.item-dot { width: 10px; height: 10px; border-radius: 3px; }
.item-name { font-weight: 560; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item-meta { font-size: 11.5px; color: var(--text-dim); font-family: var(--mono); }
.item-expected { font-size: 11.5px; color: var(--text-faint); font-family: var(--mono); text-align: right; white-space: nowrap; }

/* ---------------------------------------------------------------- fields */

.field { display: block; margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field-compact { margin-bottom: 0; min-width: 150px; }
.field-label { display: block; font-size: 11.5px; font-weight: 560; color: var(--text-dim); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .04em; }
.field-label-row { display: flex; justify-content: space-between; align-items: baseline; }
.field-value { font-family: var(--mono); font-size: 12.5px; color: var(--accent); font-weight: 600; }
.field-inline { display: flex; align-items: center; gap: 8px; margin-top: 7px; }
.unit { font-size: 11.5px; color: var(--text-faint); }

.input {
  font: inherit;
  font-size: 13px;
  width: 100%;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 9px;
}
.input-sm { font-size: 12.5px; padding: 6px 8px; }
.field-inline .input-sm { width: 96px; font-family: var(--mono); }
select.input { cursor: pointer; }

/* Range inputs, styled consistently across engines. */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  cursor: pointer;
  margin: 2px 0 0;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 5px; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) var(--fill, 0%), var(--border) var(--fill, 0%));
}
input[type="range"]::-moz-range-track { height: 5px; border-radius: 999px; background: var(--border); }
input[type="range"]::-moz-range-progress { height: 5px; border-radius: 999px; background: var(--accent); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 15px; height: 15px; margin-top: -5px;
  border-radius: 50%;
  background: var(--text);
  border: 3px solid var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
}
input[type="range"]::-moz-range-thumb {
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--text); border: 3px solid var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.wide-slider { margin: 4px 0 10px; }

.switch { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-dim); cursor: pointer; user-select: none; }
.switch input { accent-color: var(--accent); width: 15px; height: 15px; cursor: pointer; }

/* ------------------------------------------------------------ quickstats */

.quickstats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.quickstat { background: var(--panel-2); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 7px 9px; }
.quickstat-label { display: block; font-size: 10.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .04em; }
.quickstat-value { font-family: var(--mono); font-size: 14px; font-weight: 600; }

/* --------------------------------------------------------------- presets */

.preset-list { display: flex; flex-direction: column; gap: 5px; }
.preset {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  font: inherit; font-size: 12px; text-align: left;
  padding: 7px 9px; cursor: pointer;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
}
.preset:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.preset span:last-child { font-family: var(--mono); color: var(--accent); white-space: nowrap; }

/* ------------------------------------------------------------------ tabs */

.tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}
.tab {
  font: inherit; font-size: 13px; font-weight: 550;
  flex: 1;
  padding: 9px 14px;
  color: var(--text-dim);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background .14s, color .14s;
}
.tab:hover { color: var(--text); background: var(--panel-2); }
.tab[aria-selected="true"] { color: var(--accent-ink); background: var(--accent); }

.tabpanel { display: flex; flex-direction: column; gap: 14px; }
.tabpanel[hidden] { display: none; }

/* ------------------------------------------------------------- stat grid */

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(158px, 1fr)); gap: 10px; }
.stat-grid-3 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-top: 4px; }

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 13px;
  box-shadow: var(--shadow);
}
.stat-grid-3 .stat { background: var(--panel-2); box-shadow: none; }
.stat-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; display: block; }
.stat-value { font-family: var(--mono); font-size: 21px; font-weight: 620; margin-top: 3px; letter-spacing: -0.02em; line-height: 1.2; }
.stat-note { font-size: 11.5px; color: var(--text-faint); margin-top: 3px; display: block; }
.stat-accent .stat-value { color: var(--accent); }
.stat-good .stat-value { color: var(--good); }
.stat-warn .stat-value { color: var(--warn); }
.stat-danger .stat-value { color: var(--danger); }

/* ---------------------------------------------------------------- charts */

.chart-wrap { position: relative; width: 100%; height: 300px; }
.chart-wrap canvas { width: 100%; height: 100%; display: block; }
#chart-survival { }
.chart-readout {
  margin-top: 8px;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  min-height: 34px;
}

.legend-key { display: inline-block; width: 22px; height: 9px; border-radius: 3px; margin: 0 4px 0 12px; vertical-align: middle; }
.card-sub .legend-key:first-child { margin-left: 0; }
.legend-bar { background: var(--chart-bar); }
.legend-line { background: var(--chart-empirical); height: 3px; }

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

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.data-table th, .data-table td { padding: 8px 10px; text-align: right; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table thead th { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-dim); font-weight: 600; }
.data-table tbody td { font-family: var(--mono); }
.data-table tbody td:first-child { font-family: var(--sans); color: var(--text-dim); }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover td { background: var(--panel-2); }
.cell-good { color: var(--good); }
.cell-warn { color: var(--warn); }
.cell-danger { color: var(--danger); }
.cell-strong { font-weight: 650; }

/* -------------------------------------------------------------- controls */

.control-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; }
.control-row .field-compact { flex: 1 1 160px; }
.control-actions { display: flex; gap: 8px; margin-left: auto; }

.callout {
  margin: 12px 0 0;
  padding: 11px 13px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--accent-soft);
  font-size: 13px;
  color: var(--text);
}
.callout.callout-warn { border-left-color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent); }
.callout.callout-danger { border-left-color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, transparent); }

/* ----------------------------------------------------------------- maths */

.maths {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.maths > summary {
  padding: 13px 16px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 9px;
  user-select: none;
}
.maths > summary::-webkit-details-marker { display: none; }
.maths > summary::before {
  content: "▸";
  color: var(--accent);
  font-size: 11px;
  transition: transform .16s;
  display: inline-block;
}
.maths[open] > summary::before { transform: rotate(90deg); }
.maths > summary:hover { background: var(--panel-2); }
.maths-body { padding: 0 16px 16px; }

.math-heading { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-dim); margin: 0 0 10px; }
.math-line {
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  margin-bottom: 8px;
  overflow-x: auto;
  white-space: nowrap;
}
.math-line.general { color: var(--text-dim); }
.math-line.substituted { color: var(--text); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.math-steps { margin: 10px 0 0; display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: 1px; background: var(--border-soft); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); overflow: hidden; }
.math-steps dt { padding: 7px 11px; background: var(--panel-2); font-family: var(--mono); font-size: 12px; color: var(--text-dim); }
.math-steps dd { padding: 7px 11px; margin: 0; background: var(--panel); font-family: var(--mono); font-size: 12.5px; overflow-x: auto; }
.math-result {
  margin-top: 10px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 600;
}
.math-why { margin: 10px 0 0; font-size: 12.5px; color: var(--text-dim); line-height: 1.6; }
.math-note + .math-note { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--border); }
sup, sub { font-size: .72em; }

/* --------------------------------------------------------------- compare */

.compare-heads { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.compare-head {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 11px;
  font-size: 12.5px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.compare-head .swatch { width: 11px; height: 11px; border-radius: 3px; flex: none; }
.compare-a .swatch { background: var(--chart-bar); }
.compare-b .swatch { background: var(--chart-highlight); }

/* ---------------------------------------------------------------- footer */

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 24px 22px;
  font-size: 11.5px;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
}

.mono { font-family: var(--mono); }

/* Scrollbars, dark-theme friendly. */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 999px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); background-clip: content-box; }

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