/* ==========================================================
   Church History Timeline — Base — reset, CSS variables, app shell, shared button primitives
   Part of the split stylesheet (see css/ for the rest): base.css,
   top-bar.css, datasource-filters.css, map-view.css, side-panel.css,
   article-view.css, mobile-view.css. Loaded as separate <link>
   tags in index.html; order barely matters for CSS (later same-
   specificity rules win, and there are no same-selector conflicts
   across these files) — base.css is simply listed first as a
   convention, since it holds the shared :root variables and button
   primitives (.btn, .jump-btn, .read-article-btn, .google-search-btn)
   the other files build on.
   ========================================================== */

:root {
  --bg: #1b1a17;
  --bg-panel: #232019;
  --parchment: #f4ecd8;
  --parchment-dim: #e6dcc3;
  --ink: #2b2620;
  --ink-soft: #58503f;
  --gold: #c99a1e;
  --gold-bright: #e8c257;
  --line: rgba(244, 236, 216, 0.14);
  --line-strong: rgba(244, 236, 216, 0.28);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --radius: 10px;
  --font-serif: Georgia, "Times New Roman", "Iowan Old Style", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--parchment);
  font-family: var(--font-sans);
  overflow: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 18px;
  border: 1px solid var(--line-strong);
  background: rgba(244, 236, 216, 0.05);
  color: var(--parchment);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: rgba(201, 154, 30, 0.16); border-color: var(--gold); }
.btn.active { background: rgba(201, 154, 30, 0.25); border-color: var(--gold); color: var(--gold-bright); }

.btn-icon-only {
  width: 34px;
  height: 34px;
  padding: 0;
  justify-content: center;
  border-radius: 50%;
}

.btn-small {
  padding: 7px 12px;
  font-size: 12px;
}

.jump-btn {
  margin-top: 4px;
  font-size: 12.5px;
  color: #8a6d1f;
  border: 1px solid rgba(0,0,0,0.15);
  background: #fff;
  border-radius: 14px;
  padding: 6px 12px;
  cursor: pointer;
}
.jump-btn:hover { background: #f5e8c4; }

.read-article-btn {
  background: var(--ink);
  color: var(--parchment);
  border-color: var(--ink);
  font-weight: 600;
}
.read-article-btn:hover { background: #3a3222; }

.google-search-btn {
  background: #eef4fb;
  color: #2451a3;
  border-color: rgba(46,111,224,0.35);
}
.google-search-btn:hover { background: #dce9f7; }

/* Scrollbars */
#side-panel-body::-webkit-scrollbar, #filter-drawer::-webkit-scrollbar { width: 8px; }
#side-panel-body::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.2); border-radius: 4px; }