/* =============================================================================
   @elements/style — tabs

   Two tab styles:

   1. Underline tabs — horizontal row of tab buttons, active has a 1.5px
      solid ink border-bottom; inactive is --ink-dim. Used on the dashboard
      feed filter ("Active / New / Top / Unanswered"), account sub-nav, etc.

   2. Segmented group — a bordered pill group of buttons for platform
      selection (MacOS / Linux / Windows) and similar. Active button gets
      an accent-soft background with rust text.
============================================================================= */

/* ─── Underline tabs ──────────────────────────────────────────────── */

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--rule);
}

.tab {
  padding: 0.5625rem 0.875rem 0.75rem;    /* 9 14 12 */
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--ink-dim);
  font-weight: var(--font-medium);
  cursor: pointer;
  border: none;
  background: transparent;
  border-bottom: 1.5px solid transparent;
  margin-bottom: -1px;
  display: flex;
  align-items: center;
  gap: var(--space-1-5);
  transition: color var(--duration-fast) var(--ease-out);
}
.tab:first-child { padding-left: 0; }
.tab:hover { color: var(--ink-soft); }
.tab.is-active,
.tab[aria-selected="true"] {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* Filter modifier next to a tab name (e.g. "Top · week"). Explicit
   middle-dot separator makes it read as "filter · qualifier" not as
   one phrase. */
.tab-count {
  font-size: 0.6875rem;
  color: var(--ink-faint);
  font-weight: var(--font-regular);
  margin-left: 0.375rem;
}
.tab-count::before { content: '· '; opacity: 0.6; }

/* Pill variant for inbox-style counts (e.g. "Unanswered [4]"). Small
   rounded rectangle, faint bg, ink text. */
.tab-pill {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: var(--font-medium);
  background: var(--bg-panel);
  color: var(--ink);
  padding: 1px 0.375rem;
  border-radius: 100px;
  margin-left: 0.4375rem;
  font-variant-numeric: tabular-nums;
  vertical-align: 1px;
}

.tabs-right {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--ink-dim);
  padding: 0.5625rem 0 0.75rem;
  display: flex;
  align-items: center;
  gap: var(--space-1-5);
}

/* ─── Segmented group ──────────────────────────────────────────────
   Use for platform/arch selection. Active button: rust soft bg + rust text.
   <div class="seg">
     <button class="seg-btn is-active">MacOS</button>
     <button class="seg-btn">Linux</button>
     <button class="seg-btn">Windows</button>
   </div>
*/

.seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg);
}

.seg-btn {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: var(--font-medium);
  background: var(--bg);
  color: var(--ink-dim);
  border: none;
  padding: var(--space-2) 0.875rem;
  cursor: pointer;
  border-right: 1px solid var(--rule);
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}
.seg-btn:last-child { border-right: none; }
.seg-btn:hover:not(.is-active) { color: var(--ink-soft); background: var(--bg-soft); }
.seg-btn.is-active,
.seg-btn[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--accent-deep);
}
.seg-btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: -2px;
}

/* Space between two .seg groups in a row (platform + arch) */
.seg-row {
  display: flex;
  gap: 0.875rem;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}