/* ============================================================
   CORE — Base typography + layout primitives
   ============================================================ */

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: var(--lh-base);
  color: var(--text);
  background: var(--surface-alt);
  -webkit-font-smoothing: antialiased;
}

/* === HEADINGS — use Sao Chingcha display font === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-strong);
  margin: 0;
  line-height: var(--lh-tight);
  font-weight: 700;
  letter-spacing: -0.01em;
}
h1 { font-size: var(--fs-display); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-heading); }
h4 { font-size: var(--fs-h4); line-height: var(--lh-heading); }
h5 { font-size: var(--fs-eyebrow); font-family: var(--font-heading); letter-spacing: 0.06em; text-transform: uppercase; }

/* [2026-07-06] บังคับ p ให้ขนาด + line-height เท่ากันทั้งเว็บ (แก้ปัญหา p ไม่เท่ากัน)
   component ที่ตั้งใจต่างค่า (.lead, .hero-slide-subtitle ฯลฯ) มี selector เฉพาะกว่า จะ override ได้ตามปกติ */
p { margin: 0 0 14px; font-size: var(--fs-body); line-height: var(--lh-body); }

.muted { color: var(--text-muted); }
.sao   { font-family: var(--font-display); }

/* === LAYOUT PRIMITIVES === */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section    { padding: 72px 0; }
.section-sm { padding: 48px 0; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-sidebar { grid-template-columns: 268px 1fr; }
.grid-content { grid-template-columns: 2fr 1fr; }

@media (max-width: 1000px) {
  .grid-3, .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-sidebar, .grid-content { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
}

.hstack { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.vstack { display: flex; flex-direction: column; gap: 12px; }
.spacer { flex: 1; }

.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }  .mt-24 { margin-top: 24px; }  .mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; } .mb-32 { margin-bottom: 32px; }

/* Section title — standard pattern */
.section-title {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 20px; flex-wrap: wrap; margin-bottom: 32px;
}
.section-title h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  margin: 0 0 6px;
}
.section-title p { color: var(--text-muted); margin: 0; font-size: var(--fs-body); line-height: 1.6; }
.section-title .link-arrow {
  color: var(--primary); font-family: var(--font-heading);
  font-weight: 700; font-size: var(--fs-badge);
  display: inline-flex; align-items: center; gap: 6px;
  transition: var(--trans-fast);
}
.section-title .link-arrow:hover { gap: 10px; }

/* Kicker — small uppercase label */
.kicker {
  display: inline-block; padding-bottom: 6px;
  color: var(--primary);
  font-family: var(--font-heading);
  font-size: var(--fs-eyebrow); font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  border-bottom: 2px solid var(--primary);
  margin-bottom: 14px;
}

/* === TYPE SCALE utility classes — ใช้แทน inline font-size (ดู TYPOGRAPHY_PLAN.md) === */
.t-lead    { font-size: var(--fs-lead); }
.t-body    { font-size: var(--fs-body); }
.t-body-sm { font-size: var(--fs-body-sm); }
.t-meta    { font-size: var(--fs-meta); }
.t-badge   { font-size: var(--fs-badge); }
.t-micro   { font-size: var(--fs-micro); }