/* appkit.css — shared design system for all dialect-atlas apps.
 * Copy verbatim into every app's js/ folder. Defines tokens + the shared
 * topbar toolbar, docs modal, language toggle, and common map/panel/tooltip
 * styles so every app reads as one system. */

:root {
  --surface: #fcfcfb;
  --page: #f9f9f7;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --hairline: #e1e0d9;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --amber-bg: #fdf5e3;
  --amber-border: #e6c76a;
  --amber-ink: #8a6d1a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--page);
  color: var(--ink);
}

/* ---- app header ---- */
.ak-header {
  position: relative;
  padding: 14px 20px 10px;
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
}
.ak-header h1 { margin: 0 0 6px; font-size: 1.15rem; font-weight: 650; }
.ak-header h1 small { font-weight: 400; color: var(--muted); margin-left: 8px; font-size: 0.8rem; }

/* ---- top-right toolbar (docs + language) ---- */
.ak-toolbar {
  position: absolute; top: 12px; right: 16px;
  display: flex; gap: 8px; align-items: center; z-index: 20;
}
.ak-btn {
  font: inherit; font-size: 0.8rem; cursor: pointer;
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 11px; border-radius: 7px;
  border: 1px solid var(--hairline); background: var(--page); color: var(--ink-2);
}
.ak-btn:hover { border-color: var(--accent); color: var(--ink); }
.ak-btn .ak-ico { font-size: 0.95rem; }
.ak-lang { font-weight: 650; min-width: 34px; justify-content: center; }

/* ---- docs modal ---- */
.ak-modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 100;
  background: rgba(20, 20, 22, 0.42); backdrop-filter: blur(2px);
  align-items: center; justify-content: center; padding: 24px;
}
.ak-modal-overlay.open { display: flex; }
.ak-modal {
  position: relative; background: var(--surface); color: var(--ink);
  border-radius: 12px; max-width: 760px; width: 100%; max-height: 85vh;
  overflow-y: auto; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}
.ak-modal-close {
  position: sticky; top: 0; float: right; margin: 8px 10px 0 0;
  font-size: 1.6rem; line-height: 1; border: none; background: none;
  color: var(--muted); cursor: pointer; z-index: 2;
}
.ak-modal-close:hover { color: var(--ink); }
.ak-modal-body { padding: 22px 30px 30px; }
.ak-modal-body h1 { font-size: 1.35rem; margin: 0 0 4px; }
.ak-modal-body h2 { font-size: 1.05rem; margin: 22px 0 6px; padding-top: 12px; border-top: 1px solid var(--hairline); }
.ak-modal-body h3 { font-size: 0.95rem; margin: 16px 0 4px; }
.ak-modal-body p { line-height: 1.65; color: var(--ink-2); margin: 6px 0; font-size: 0.9rem; }
.ak-modal-body ul { margin: 6px 0 6px 2px; padding-left: 20px; }
.ak-modal-body li { line-height: 1.6; color: var(--ink-2); margin: 3px 0; font-size: 0.9rem; }
.ak-modal-body code {
  background: var(--page); border: 1px solid var(--hairline); border-radius: 4px;
  padding: 1px 5px; font-size: 0.85em; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
}
.ak-modal-body strong { color: var(--ink); }
.ak-modal-body .doc-tbl { border-collapse: collapse; width: 100%; margin: 8px 0; font-size: 0.85rem; }
.ak-modal-body .doc-tbl td { border: 1px solid var(--hairline); padding: 5px 9px; color: var(--ink-2); vertical-align: top; }
.ak-modal-body .doc-tbl tr:first-child td { font-weight: 650; color: var(--ink); background: var(--page); }

/* ---- shared control panel ---- */
.ak-controls {
  display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: flex-end;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--hairline);
}
.ak-ctrl { display: flex; flex-direction: column; gap: 3px; }
.ak-ctrl > span.lab { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.ak-ctrl select, .ak-ctrl input[type="text"] {
  font: inherit; font-size: 0.82rem; padding: 4px 6px;
  border: 1px solid var(--hairline); border-radius: 6px; background: var(--page); color: var(--ink); min-width: 150px;
}
.ak-ctrl input[type="range"] { width: 190px; }
.ak-btn-primary {
  font: inherit; font-size: 0.84rem; font-weight: 650; cursor: pointer;
  padding: 7px 14px; border-radius: 7px; border: 1px solid var(--accent);
  background: var(--accent); color: #fff;
}
.ak-btn-primary:hover { filter: brightness(1.06); }

/* ---- stat chips ---- */
.ak-stats { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.ak-chip {
  background: var(--page); border: 1px solid var(--hairline); border-radius: 6px;
  padding: 3px 10px; font-size: 0.78rem; color: var(--ink-2);
}
.ak-chip b { color: var(--ink); font-weight: 650; }

.ak-amber {
  display: none; align-items: center; gap: 6px; margin-left: auto;
  background: var(--amber-bg); border: 1px solid var(--amber-border);
  color: var(--amber-ink); border-radius: 6px; padding: 5px 10px; font-size: 0.78rem;
}
.ak-amber.show { display: flex; }

/* ---- map panels ---- */
.ak-maps { display: flex; gap: 12px; padding: 12px 16px; flex-wrap: wrap; }
.ak-panel {
  flex: 1 1 0; min-width: 280px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  display: flex; flex-direction: column; overflow: hidden;
}
.ak-panel h2 {
  margin: 0; padding: 8px 12px; font-size: 0.92rem; font-weight: 650;
  border-bottom: 1px solid var(--hairline); color: var(--ink);
}
.ak-panel h2 small { font-weight: 400; color: var(--muted); margin-left: 6px; }
.ak-map { position: relative; width: 100%; height: 520px; }
.ak-map svg { display: block; cursor: grab; }

/* ---- legend ---- */
.ak-legend {
  padding: 8px 12px 10px; border-top: 1px solid var(--hairline);
  display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 0.76rem; color: var(--ink-2);
  max-height: 150px; overflow-y: auto;
}
.ak-legend-item { display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.ak-swatch { width: 10px; height: 10px; border-radius: 50%; flex: none; border: 1px solid rgba(0, 0, 0, 0.15); }

/* ---- tooltip ---- */
.ak-tooltip {
  position: fixed; display: none; pointer-events: none; z-index: 50;
  background: rgba(20, 20, 20, 0.92); color: #fff; border-radius: 6px;
  padding: 8px 10px; font-size: 0.76rem; line-height: 1.5; max-width: 300px;
}
.ak-tooltip .tt-title { font-weight: 650; font-size: 0.82rem; }

.ak-note { padding: 0 20px 16px; font-size: 0.78rem; color: var(--muted); line-height: 1.6; }
.ak-loading { padding: 40px; text-align: center; color: var(--muted); }