/* Reset, typography, layout primitives. Logical properties only (RTL/LTR). */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--fs);
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.25;
  font-weight: 700;
  color: var(--ink);
}
h1 { font-size: var(--fs-xl); }
h2 { font-size: var(--fs-lg); }
h3 { font-size: var(--fs-md); }
h4 { font-size: var(--fs); }
p { margin: 0 0 var(--sp-3); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg, canvas, video { max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
hr { border: 0; border-block-start: 1px solid var(--line); margin: var(--sp-4) 0; }
code, kbd, .mono { font-family: var(--font-mono); font-size: 0.92em; }

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  vertical-align: -0.2em;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
[dir="rtl"] .icon.flip-rtl { transform: scaleX(-1); }

/* ---------- layout primitives ---------- */
.page {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: var(--sp-6);
}
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-block-end: var(--sp-5);
}
.page-header .subtitle { color: var(--muted); margin: var(--sp-1) 0 0; }
.page-actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

.stack { display: flex; flex-direction: column; gap: var(--sp-4); }
.stack-sm { display: flex; flex-direction: column; gap: var(--sp-2); }
.row { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap; }
.spacer { flex: 1; }

.grid { display: grid; gap: var(--sp-4); }
.grid-2 { display: grid; gap: var(--sp-4); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: var(--sp-4); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; gap: var(--sp-4); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-auto { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.text-muted { color: var(--muted); }
.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }
.text-lg { font-size: var(--fs-md); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-end { text-align: end; }
.text-center { text-align: center; }
.nowrap { white-space: nowrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.num { font-variant-numeric: tabular-nums; }
/* numbers, codes, phones stay LTR inside RTL text */
.ltr { direction: ltr; unicode-bidi: isolate; }
.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;
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .page { padding: var(--sp-4); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  h1 { font-size: var(--fs-lg); }
}