web/src/styles/base.css

/* =====================================================================
   btc-intel — the component layer.

   Structure over decoration: hairlines, square corners, one accent, and
   mono for anything measured. Every value comes from tokens.css; nothing
   below invents a colour or a duration.
   ===================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: var(--weight-regular);
  line-height: var(--lh-head);
  text-wrap: balance;
}

h1 {
  font-size: var(--fs-h1);
  letter-spacing: var(--ls-h1);
}
h2 {
  font-size: var(--fs-h2);
  font-weight: var(--weight-medium);
}
h3 {
  font-size: var(--fs-h3);
  font-weight: var(--weight-semi);
}

p {
  margin: 0;
}

a {
  color: var(--evidence);
  text-decoration-color: color-mix(in srgb, var(--evidence) 35%, transparent);
  text-underline-offset: 2px;
  transition: color var(--dur-2) var(--ease-out);
}
a:hover {
  color: var(--evidence-hi);
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

::selection {
  background: var(--evidence);
  color: var(--on-evidence);
}

/* -- primitives ------------------------------------------------------- */
.label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--weight-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-muted);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-data);
}

.soft {
  color: var(--ink-soft);
}
.muted {
  color: var(--ink-muted);
}

.measure {
  max-width: var(--measure);
}

.panel {
  background: var(--surface);
  border: var(--bw-hair) solid var(--rule);
}

.well {
  background: var(--sunk);
  border: var(--bw-hair) solid var(--rule);
}

.rule-t {
  border-top: var(--bw-hair) solid var(--rule);
}

.stack {
  display: flex;
  flex-direction: column;
}

/* Corner ticks instead of a full border: eight gradients on one element. */
.bracket {
  --bk: var(--rule);
  background-image:
    linear-gradient(var(--bk), var(--bk)), linear-gradient(var(--bk), var(--bk)),
    linear-gradient(var(--bk), var(--bk)), linear-gradient(var(--bk), var(--bk)),
    linear-gradient(var(--bk), var(--bk)), linear-gradient(var(--bk), var(--bk)),
    linear-gradient(var(--bk), var(--bk)), linear-gradient(var(--bk), var(--bk));
  background-repeat: no-repeat;
  background-size:
    7px 1px,
    1px 7px,
    7px 1px,
    1px 7px,
    7px 1px,
    1px 7px,
    7px 1px,
    1px 7px;
  background-position:
    0 0,
    0 0,
    100% 0,
    100% 0,
    0 100%,
    0 100%,
    100% 100%,
    100% 100%;
}

/* -- buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.5rem 0.875rem;
  border: 0;
  border-radius: var(--r-1);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--weight-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color var(--dur-2) var(--ease-out),
    color var(--dur-2) var(--ease-out),
    opacity var(--dur-2) var(--ease-out);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--evidence);
  color: var(--on-evidence);
}
.btn-primary:hover:not(:disabled) {
  background: var(--evidence-hi);
}
.btn-primary:active:not(:disabled) {
  background: var(--evidence-lo);
}

.btn-ghost {
  --bk: var(--ink-faint);
  color: var(--ink);
}
.btn-ghost:hover:not(:disabled) {
  --bk: var(--evidence);
  color: var(--evidence);
}

.btn-quiet {
  color: var(--ink-muted);
  padding-inline: var(--sp-2);
}
.btn-quiet:hover:not(:disabled) {
  color: var(--ink);
}

.btn[aria-pressed="true"] {
  background: var(--evidence-w12);
  color: var(--evidence);
}

/* -- chips ------------------------------------------------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.0625rem 0.375rem;
  background: var(--sunk);
  border: var(--bw-hair) solid transparent;
  border-radius: var(--r-0);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  white-space: nowrap;
}

.chip-caution {
  background: var(--caution-bg);
  color: var(--caution);
  border-color: color-mix(in srgb, var(--caution) 40%, transparent);
}

.chip-confirmed {
  background: var(--confirmed-bg);
  color: var(--confirmed);
}

.id-chip {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  background: var(--sunk);
  padding: 0.0625rem 0.3125rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* -- shell ------------------------------------------------------------ */
.shell {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  gap: var(--rail-gap);
  max-width: var(--content-max);
  margin-inline: auto;
  padding: var(--sp-6) var(--sp-5) var(--sp-9);
}

.rail {
  position: sticky;
  top: var(--sp-6);
  align-self: start;
  height: max-content;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark-mark {
  width: 0.875rem;
  height: 0.875rem;
  background: var(--evidence);
  clip-path: polygon(0 0, 45% 0, 45% 45%, 100% 45%, 100% 100%, 55% 100%, 55% 55%, 0 55%);
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  margin-top: var(--sp-6);
}

.rail-link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.25rem 0;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color var(--dur-2) var(--ease-out);
}
.rail-link:hover {
  color: var(--ink);
}
.rail-link[aria-current="page"] {
  color: var(--ink);
}
.rail-link::before {
  content: "";
  width: 6px;
  height: 6px;
  background: transparent;
}
.rail-link[aria-current="page"]::before {
  background: var(--evidence);
}

.rail-divider {
  margin: var(--sp-5) 0 var(--sp-4);
  border: 0;
  border-top: 1px dashed var(--rule);
}

.subnav {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  margin-top: var(--sp-3);
}

.subnav a {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.1875rem 0;
  color: var(--ink-muted);
  font-size: var(--fs-small);
  text-decoration: none;
}
.subnav a::before {
  content: "";
  height: 1px;
  width: 0.5rem;
  background: var(--ink-faint);
  transition:
    width var(--dur-2) var(--ease-out),
    background-color var(--dur-2) var(--ease-out);
}
.subnav a[aria-current="true"] {
  color: var(--ink);
}
.subnav a[aria-current="true"]::before {
  width: 1.25rem;
  background: var(--evidence);
}

/* Half-filled square: the theme control, drawn rather than typed, because a
   glyph for this is not in every font. */
.theme-swatch {
  width: 9px;
  height: 9px;
  border: 1px solid currentColor;
  background: linear-gradient(90deg, currentColor 50%, transparent 50%);
}

.rail-foot {
  margin-top: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  align-items: flex-start;
}

.content {
  min-width: 0;
}

.section {
  margin-top: var(--sp-8);
}
.section:first-child {
  margin-top: 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-bottom: var(--sp-2);
  border-bottom: var(--bw-hair) solid var(--rule);
  margin-bottom: var(--sp-4);
}

/* -- stat blocks ------------------------------------------------------ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  border-top: var(--bw-hair) solid var(--rule);
  border-left: var(--bw-hair) solid var(--rule);
}

.stat {
  padding: var(--sp-4);
  border-right: var(--bw-hair) solid var(--rule);
  border-bottom: var(--bw-hair) solid var(--rule);
  background: var(--surface);
}

.stat-value {
  display: flex;
  align-items: baseline;
  gap: 0.125rem;
  margin-top: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-stat);
  font-weight: var(--weight-regular);
  letter-spacing: var(--ls-stat);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: var(--fs-small);
  letter-spacing: 0;
  color: var(--ink-muted);
}

/* -- tables ----------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: var(--bw-hair) solid var(--rule);
  background: var(--surface);
}

table.data {
  width: 100%;
  border-collapse: collapse;
}

table.data th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface);
  border-bottom: var(--bw-hair) solid var(--rule);
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--weight-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-muted);
  text-align: left;
  white-space: nowrap;
}

table.data th button {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  color: inherit;
  cursor: pointer;
}
table.data th button:hover {
  color: var(--ink);
}

table.data td {
  padding: var(--sp-2) var(--sp-3);
  white-space: nowrap;
  border-bottom: var(--bw-hair) solid var(--rule-soft);
  height: var(--row-h);
  vertical-align: middle;
}

table.data tbody tr {
  transition: background-color var(--dur-2) var(--ease-out);
}
table.data tbody tr:hover {
  background: var(--evidence-w7);
}
table.data tbody tr:focus-within {
  background: var(--evidence-w7);
}
table.data tbody tr[data-settled="true"] {
  opacity: 0.55;
}

.num-cell {
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--fs-data);
  font-variant-numeric: tabular-nums;
}

.gutter-code {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.row-link {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: var(--fs-data);
  white-space: nowrap;
}
.row-link:hover {
  color: var(--evidence);
}

.reason-cell {
  color: var(--ink-soft);
  font-size: var(--fs-small);
  max-width: 30ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* -- risk meter ------------------------------------------------------- */
.risk {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  white-space: nowrap;
}

.risk-cells {
  font-family: var(--font-mono);
  letter-spacing: -0.04em;
  color: var(--risk-ink);
}

.risk-score {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-data);
}

.risk-label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--risk-ink);
}

.risk-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.0625rem 0.375rem;
  background: var(--risk-bg);
  color: var(--risk-ink);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}

/* -- filters ---------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-3) 0;
}

.field {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.field select,
.field input[type="search"] {
  font-family: var(--font-mono);
  font-size: var(--fs-data);
  color: var(--ink);
  background: var(--surface);
  border: var(--bw-hair) solid var(--rule);
  border-radius: var(--r-1);
  padding: 0.25rem 0.375rem;
}

.field input[type="range"] {
  accent-color: var(--evidence);
  width: 8rem;
}

/* -- notice ----------------------------------------------------------- */
.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--caution-bg);
  border: var(--bw-hair) solid color-mix(in srgb, var(--caution) 35%, transparent);
  color: var(--ink);
}

.notice .label {
  color: var(--caution);
}

/* A build mismatch is not a passing status: it stays until it is fixed. */
.build-notice {
  margin-bottom: var(--sp-5);
  border-color: color-mix(in srgb, var(--risk-high) 45%, transparent);
  background: var(--risk-high-bg);
}

.build-notice .label {
  color: var(--risk-high);
}

/* -- the field: dark in both themes ----------------------------------- */
.field-panel {
  position: relative;
  background: var(--field);
  color: var(--field-ink);
  border: var(--bw-hair) solid var(--field-rule);
  overflow: hidden;
}

.field-panel .label {
  color: var(--field-muted);
}

.field-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-bottom: var(--bw-hair) solid var(--field-rule);
}

.field-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-top: var(--bw-hair) solid var(--field-rule);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.06em;
  color: var(--field-muted);
}

.legend-swatch {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: var(--sp-1);
  vertical-align: middle;
}

.field-btn {
  background: transparent;
  color: var(--field-ink);
  --bk: #2a3a72;
}
.field-btn:hover:not(:disabled) {
  --bk: var(--field-muted);
  background: #ffffff0f;
}

/* -- home header ------------------------------------------------------ */
.header-field {
  position: relative;
  min-height: 13rem;
  display: flex;
  align-items: flex-end;
  padding: var(--sp-5);
}

.header-field canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.header-copy {
  position: relative;
  max-width: 34rem;
}

.header-copy h1 {
  font-size: var(--fs-display);
  letter-spacing: var(--ls-display);
  line-height: var(--lh-display);
  color: var(--field-ink);
}

/* -- charts ----------------------------------------------------------- */
.bar-row {
  display: grid;
  grid-template-columns: minmax(7rem, 12rem) 1fr 3rem;
  align-items: center;
  gap: var(--sp-3);
  padding: 0.25rem 0;
  font-size: var(--fs-small);
}

.bar-track {
  height: 0.5rem;
  background: var(--sunk);
}

.bar-fill {
  height: 100%;
  background: var(--evidence);
  transform-origin: left center;
}

.case-row {
  display: grid;
  grid-template-columns: 13rem auto minmax(0, 1fr);
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-3) 0;
  border-bottom: var(--bw-hair) solid var(--rule-soft);
  font-size: var(--fs-small);
  color: var(--ink);
  text-decoration: none;
}
.case-row:hover {
  background: var(--evidence-w7);
  color: var(--ink);
}
.case-reason {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 48rem) {
  .case-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-1);
  }
  .case-reason {
    white-space: normal;
  }
}

/* -- entity ----------------------------------------------------------- */
.entity-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-5);
}

.gauge {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.gauge svg {
  display: block;
}

.gauge-arc {
  transition: none;
}

.evidence-list {
  display: flex;
  flex-direction: column;
}

.evidence-item {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
  border-bottom: var(--bw-hair) solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
}

.evidence-item a,
.evidence-item span.value {
  overflow-wrap: anywhere;
}

/* Leads live on their own surface, deliberately. Attribution is a different
   kind of claim from suspicion and must not read as part of the reasons. */
.leads {
  background: var(--sunk);
  border: var(--bw-hair) solid var(--rule);
  padding: var(--sp-4);
}

.lead {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-2) var(--sp-4);
  padding: var(--sp-3) 0;
  border-bottom: var(--bw-hair) solid var(--rule);
}
.lead:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.lead-ip {
  font-family: var(--font-mono);
  font-size: var(--fs-data);
}

.taint-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
}

/* -- command palette -------------------------------------------------- */
dialog.palette {
  width: min(34rem, calc(100vw - 2rem));
  margin-top: 12vh;
  padding: 0;
  border: 0;
  border-radius: var(--r-1);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-float);
}

dialog.palette::backdrop {
  background: color-mix(in srgb, var(--ink) 35%, transparent);
}

.palette input {
  width: 100%;
  padding: var(--sp-4);
  border: 0;
  border-bottom: var(--bw-hair) solid var(--rule);
  background: transparent;
  color: inherit;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
}
.palette input:focus {
  outline: none;
}

.palette ul {
  list-style: none;
  margin: 0;
  padding: var(--sp-2);
  max-height: 18rem;
  overflow-y: auto;
}

.palette li button {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  background: transparent;
  border: 0;
  border-radius: var(--r-1);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  text-align: left;
  cursor: pointer;
}

.palette li[data-active="true"] button,
.palette li button:hover {
  background: var(--evidence-w12);
  color: var(--evidence);
}

.palette-foot {
  padding: var(--sp-2) var(--sp-4);
  border-top: var(--bw-hair) solid var(--rule);
}

/* -- toasts ----------------------------------------------------------- */
.toasts {
  position: fixed;
  right: var(--sp-4);
  bottom: var(--sp-4);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  background: var(--surface);
  border-radius: var(--r-1);
  box-shadow: var(--shadow-toast);
  font-size: var(--fs-small);
}

/* -- skeletons -------------------------------------------------------- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--sunk) 0%,
    color-mix(in srgb, var(--sunk) 60%, var(--surface)) 50%,
    var(--sunk) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
  height: 1rem;
}

@keyframes shimmer {
  to {
    background-position: -200% 0;
  }
}

/* -- ascii / braille decorations -------------------------------------- */
.ascii {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  line-height: 0.72;
  letter-spacing: 0.04em;
  white-space: pre;
  user-select: none;
  pointer-events: none;
  color: var(--field-muted);
}

.fade-b {
  mask-image: linear-gradient(to bottom, #000 45%, transparent 100%);
}

/* -- view transitions -------------------------------------------------- */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: var(--dur-3);
  animation-timing-function: var(--ease-out);
}

/* -- responsive -------------------------------------------------------- */
@media (max-width: 62rem) {
  .shell {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-5);
    padding: var(--sp-4) var(--sp-4) var(--sp-8);
  }
  .rail {
    position: static;
  }
  .rail-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--sp-4);
    margin-top: var(--sp-4);
  }
  .subnav {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  @view-transition {
    navigation: none;
  }
}

/* Visually hidden, still read aloud. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}