/* Executive Social Media Database -- site styles.
   Colour roles come from the validated reference palette; dark mode is a
   selected set of steps for the dark surface, not an inverted light mode. */

:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --plane: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6;
  --series-1-soft: rgba(42, 120, 214, 0.12);
  --focus: #2a78d6;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --plane: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-1: #3987e5;
    --series-1-soft: rgba(57, 135, 229, 0.16);
    --focus: #3987e5;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --plane: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-1: #3987e5;
  --series-1-soft: rgba(57, 135, 229, 0.16);
  --focus: #3987e5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--plane);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.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;
}

/* --- masthead ---------------------------------------------------------- */

.masthead { padding: 40px 0 24px; }
.masthead h1 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.lede {
  margin: 0 0 10px;
  max-width: 62ch;
  color: var(--text-secondary);
}
.meta { margin: 0; color: var(--text-muted); font-size: 13px; }

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

.panel {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.panel h2 { margin: 0 0 4px; font-size: 1rem; letter-spacing: -0.005em; }
.panel-head {
  display: flex; flex-wrap: wrap; gap: 8px;
  align-items: baseline; justify-content: space-between;
  margin-bottom: 10px;
}
.chart-note { margin: 0 0 12px; color: var(--text-muted); font-size: 13px; }

/* --- filters ----------------------------------------------------------- */

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  align-items: end;
}
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field--grow { grid-column: span 2; }
.field--actions { flex-direction: row; gap: 8px; }
.field label,
.field .field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* --- multi-select ------------------------------------------------------ */

.multi { position: relative; }
.multi-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  width: 100%; font: inherit; text-align: left; cursor: pointer;
  color: var(--text-primary); background: var(--plane);
  border: 1px solid var(--border); border-radius: 7px; padding: 7px 9px;
}
.multi-toggle:hover { border-color: var(--baseline); }
.multi-summary { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.multi-caret { color: var(--text-muted); flex: none; font-size: 11px; }
.multi[data-active="true"] .multi-toggle {
  border-color: var(--series-1);
  box-shadow: inset 0 0 0 1px var(--series-1);
}
.multi-panel {
  position: absolute; z-index: 20; top: calc(100% + 4px); left: 0;
  min-width: 100%; width: max-content; max-width: min(340px, 86vw);
  background: var(--surface-1); border: 1px solid var(--baseline);
  border-radius: 9px; padding: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
}
.multi-search { margin-bottom: 6px; }
.multi-actions { display: flex; gap: 10px; margin-bottom: 6px; }
.linkbtn {
  font: inherit; font-size: 12px; padding: 0; cursor: pointer;
  background: none; border: 0; color: var(--series-1); text-decoration: underline;
}
.multi-options { max-height: 260px; overflow-y: auto; }
.multi-option {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 6px; border-radius: 6px; cursor: pointer; font-size: 13.5px;
}
.multi-option:hover { background: var(--series-1-soft); }
.multi-option input { width: auto; flex: none; }
.multi-empty { padding: 10px 6px; color: var(--text-muted); font-size: 13px; }

.field--check { justify-content: flex-end; }
.check {
  display: flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 400; text-transform: none; letter-spacing: 0;
  color: var(--text-primary); cursor: pointer;
}
.check input { width: auto; flex: none; }
.hint { font-size: 11.5px; color: var(--text-muted); line-height: 1.35; }

/* --- sortable table headers -------------------------------------------- */

th[data-sort] { padding: 0; }
th[data-sort] button {
  display: flex; align-items: center; gap: 4px;
  width: 100%; font: inherit; color: inherit; text-transform: inherit;
  letter-spacing: inherit; background: none; border: 0; cursor: pointer;
  padding: 8px 10px;
}
th[data-sort].num button { justify-content: flex-end; }
th[data-sort] button:hover { color: var(--text-primary); }
th[data-sort] button::after {
  content: "↕"; font-size: 10px; color: var(--text-muted); opacity: 0.5;
}
th[aria-sort="ascending"] button::after { content: "↑"; opacity: 1; color: var(--series-1); }
th[aria-sort="descending"] button::after { content: "↓"; opacity: 1; color: var(--series-1); }
th[aria-sort="ascending"] button, th[aria-sort="descending"] button { color: var(--text-primary); }
input, select, textarea {
  font: inherit;
  color: var(--text-primary);
  background: var(--plane);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 9px;
  min-width: 0;
  width: 100%;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.btn {
  font: inherit;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--plane);
  color: var(--text-primary);
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { border-color: var(--baseline); }
.btn--primary { background: var(--series-1); border-color: var(--series-1); color: #fff; }
.btn--primary:hover { filter: brightness(1.06); }
.btn[disabled] { opacity: 0.45; cursor: default; }

/* --- stat row ---------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat dt {
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.03em; color: var(--text-secondary); margin: 0 0 4px;
}
.stat dd { margin: 0; font-size: 1.5rem; line-height: 1.15; letter-spacing: -0.02em; }
.stat .sub { display: block; font-size: 12px; color: var(--text-muted); margin-top: 2px; }

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

/* The monthly distribution runs the full width, and the two per-leader bar
   charts sit side by side underneath it. They are the pair that gets compared
   -- who tweets most against who is heard most -- so they belong on one row. */
.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.chart-panel { margin-bottom: 0; }
.chart-panel--wide { grid-column: 1 / -1; }

@media (max-width: 760px) {
  .charts { grid-template-columns: 1fr; }
}
.chart-box { position: relative; height: 300px; }

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

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--gridline);
  vertical-align: top;
}
th {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em;
  color: var(--text-secondary); font-weight: 600;
  border-bottom: 1px solid var(--baseline); white-space: nowrap;
}
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.text { min-width: 280px; max-width: 520px; }
td.leader, td.when { white-space: nowrap; }
tbody tr:hover { background: var(--series-1-soft); }
.empty { padding: 24px 10px; color: var(--text-muted); text-align: center; }

/* --- pager ------------------------------------------------------------- */

.pager {
  display: flex; gap: 8px; align-items: center;
  justify-content: flex-end; flex-wrap: wrap; margin-top: 12px;
}
.pager .page-of { color: var(--text-muted); font-size: 13px; font-variant-numeric: tabular-nums; }

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

.footer { padding: 8px 16px 40px; }
.footer p { margin: 0 0 6px; }
a { color: var(--series-1); }

/* --- narrow screens ---------------------------------------------------- */

@media (max-width: 640px) {
  .masthead { padding: 24px 0 16px; }
  .field--grow { grid-column: span 1; }
  .chart-box { height: 260px; }
  td.text { min-width: 220px; }
}

.tag {
  display: inline-block;
  font-size: 10.5px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.04em; vertical-align: 1px;
  color: var(--text-secondary); background: var(--plane);
  border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px;
}

/* --- notes, keys and downloads ----------------------------------------- */

/* Used wherever the page has to explain a limit rather than hide it. */
.note {
  margin: 0 0 16px;
  padding: 9px 12px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--text-secondary);
  background: var(--series-1-soft);
  border: 1px solid var(--border);
  border-radius: 7px;
}
.pager + .note { margin: 12px 0 0; }

.keyrow { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.keyrow input { flex: 1 1 260px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
#key-status { margin-top: 8px; }
#key-status[data-on="true"] { color: var(--series-1); }

.downloads {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--gridline);
}
.downloads .btn { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

.tag--warn { color: #b4541c; border-color: #b4541c; }
@media (prefers-color-scheme: dark) { .tag--warn { color: #e08a52; border-color: #e08a52; } }

tbody[aria-busy="true"] { opacity: 0.55; transition: opacity 120ms; }


/* --- expanded search terms --------------------------------------------- */

.check--tight { margin-top: 2px; font-size: 12.5px; }

/* Says what ticking the box actually does. The suggested terms are no longer
   shown one by one, so this is the only place the user learns that a model is
   involved and that it works across languages. */
.field-note {
  margin: 4px 0 0;
  max-width: 46em;
  font-size: 11.5px; line-height: 1.45;
  color: var(--text-muted);
}
.field-note em { font-style: italic; }