/* ============================================================
   TierTalk — Base / Reset
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-foreground);
  background: var(--color-background);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* พื้นหลังลายจุดน่ารัก ๆ แบบเบา ๆ */
body.pattern-dots {
  background-image: radial-gradient(var(--wwa-pink-soft) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  background-attachment: fixed;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { line-height: var(--leading-normal); }

a {
  color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

img, svg, video {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  touch-action: manipulation;
}

/* ตัวเลขต้องไม่ขยับตอนนับถอยหลัง/เปอร์เซ็นต์ */
.tnum,
.timer,
.pct,
[data-numeric] {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum' 1;
}

/* ---------- Focus ---------- */
:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}
:focus:not(:focus-visible) { outline: none; }

/* ---------- A11y helpers ---------- */
.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;
}

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -100px;
  z-index: var(--z-toast);
  padding: var(--sp-3) var(--sp-5);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: top var(--dur) var(--ease-out);
}
.skip-link:focus { top: var(--sp-4); }

/* ---------- Scrollbar ---------- */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--wwa-pink) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--wwa-pink);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--wwa-red-soft); background-clip: content-box; }

/* ---------- Layout utils ---------- */
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.gap-1 { gap: var(--sp-1); }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.wrap { flex-wrap: wrap; }
.grow { flex: 1 1 auto; min-width: 0; }
.center { align-items: center; justify-content: center; }
.between { justify-content: space-between; }
.hidden { display: none !important; }

.muted { color: var(--color-muted-fg); }
.text-center { text-align: center; }
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Print ---------- */
@media print {
  body { background: var(--wwa-white); }
  .no-print { display: none !important; }
}