/* Atlas's tokens: flat, hairline edges, colour only for meaning. */
:root {
  color-scheme: dark;

  --bg-base: #0a0d10;
  --bg-panel: #0f1318;
  --bg-elevated: #13181f;
  --bg-inset: #070a0d;

  --border-hairline: #1f262e;
  --border-subtle: #141a21;
  --border-active: #00e5ff;

  --text: #e5e9ee;
  --text-muted: #8b95a3;
  --text-dim: #586270;

  --cyan: #00e5ff;
  --cyan-fill: #0e3a44;
  --ok: #22c55e;
  --warn: #f59e0b;
  --crit: #ef4444;

  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* 4px base */
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s5: 24px;
  --s6: 32px;

  /* type: 10 labels, 12 values and inputs, 13 body, 15 brand */
  --t-label: 10px;
  --t-value: 12px;
  --t-body: 13px;
  --t-brand: 15px;

  --r-input: 2px;
  --r-button: 4px;
  --r-panel: 4px;

  --control: 32px;
  --control-small: 24px;
}

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

html,
body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--t-body);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.dim {
  color: var(--text-dim);
}

.ok {
  color: var(--ok);
}

.warn {
  color: var(--warn);
}

.crit {
  color: var(--crit);
}

.busy {
  color: var(--text-muted);
}

.select {
  user-select: all;
  word-break: break-all;
}

/* Top bar */

.top {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  height: 48px;
  padding: 0 var(--s4);
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-hairline);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--s2);
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: var(--t-brand);
  font-weight: 600;
}

.tag {
  padding: 0 var(--s1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-input);
  color: var(--text-muted);
  font-size: var(--t-label);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 16px;
}

.top-right {
  display: flex;
  gap: var(--s3);
  font-size: var(--t-value);
  white-space: nowrap;
}

/* Screens: the home screen's cards, one column at 375px, two from 768px, three from 1200px; a
   tool alone, at most 640px wide. */

main {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--s4);
}

.hidden {
  display: none;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

@media (min-width: 768px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.tool {
  max-width: 640px;
  margin: 0 auto;
}

.back {
  display: inline-flex;
  align-items: center;
  height: var(--control);
  margin-bottom: var(--s2);
  color: var(--text-muted);
  font-size: var(--t-value);
}

.back::before {
  content: "<";
  margin-right: var(--s2);
  font-family: var(--font-mono);
}

.back:hover {
  color: var(--text);
  text-decoration: none;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-panel);
}

.panel-title,
.part,
.field-label {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-title {
  display: flex;
  align-items: center;
  height: var(--control);
  padding: 0 var(--s3);
  border-bottom: 1px solid var(--border-subtle);
}

.panel-body {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  padding: var(--s3);
}

/* A card fills its grid row; its entry points sit at the bottom. */

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

.card .panel-body {
  flex: 1;
}

.card .actions {
  margin-top: auto;
  padding-top: var(--s2);
}

.part {
  margin-top: var(--s2);
  padding-top: var(--s3);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-dim);
}

.panel-body > .part:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

/* A labelled value */

.row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s3);
  min-height: 20px;
}

.row-label {
  flex: none;
  color: var(--text-muted);
  font-size: var(--t-value);
}

.row-value {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--t-value);
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}

/* A line in a list: an activity, a withdrawal, a ticket */

.entry {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s1) var(--s3);
  min-height: var(--control-small);
  font-family: var(--font-mono);
  font-size: var(--t-value);
}

.note {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--t-value);
  overflow-wrap: anywhere;
}

.status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--t-value);
  overflow-wrap: anywhere;
}

/* Inputs */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}

.input {
  width: 100%;
  height: var(--control);
  padding: 0 var(--s2);
  background: var(--bg-inset);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-input);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--t-value);
  outline: none;
}

.input::placeholder {
  color: var(--text-dim);
}

.input:focus {
  border-color: var(--border-active);
}

/* Buttons */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--control);
  padding: 0 var(--s3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-button);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--t-value);
  font-weight: 500;
  cursor: pointer;
}

.button:hover {
  border-color: var(--text-dim);
  text-decoration: none;
}

.button:disabled {
  opacity: 0.5;
  cursor: default;
}

.button.primary {
  background: var(--cyan-fill);
  border-color: var(--cyan);
  color: var(--cyan);
}

.button.small {
  height: var(--control-small);
  padding: 0 var(--s2);
}

/* The live feed */

.feed {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 320px;
  overflow-y: auto;
  font-size: var(--t-value);
  font-variant-numeric: tabular-nums;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}