/* ===================================================================
   PTS Innovations Co., Ltd. — Website Theme (2026 redesign)
   Source: Website Blueprint.docx
   =================================================================== */

:root {
  --primary-color: #6f6f71;      /* main nav, h2, primary buttons */
  --primary-dark:  #565658;      /* hover / active state derived from primary */
  --primary-tint:  #d9d9da;      /* border / divider tint of primary */
  --secondary-color: #4a4a4a;    /* body text */
  --light-bg: #f4f4f5;           /* card backgrounds, alt table rows */
  --accent-white: #ffffff;       /* page background, nav text */

  --font-display: 'Prompt', 'Noto Sans Thai', 'Segoe UI', sans-serif;
  --font-body: 'Sarabun', 'Noto Sans Thai', 'Segoe UI', sans-serif;

  --radius: 10px;
  --shadow-card: 0 2px 10px rgba(74,74,74,0.08);
  --shadow-card-hover: 0 8px 24px rgba(74,74,74,0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--secondary-color);
  background: var(--accent-white);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .pts-display {
  font-family: var(--font-display);
  color: var(--primary-color);
  font-weight: 600;
  letter-spacing: 0.2px;
}

a { color: var(--primary-color); }
a:hover { color: var(--primary-dark); }

.pts-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------- Top Navigation Bar ---------------- */
.pts-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary-color);
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}
.pts-topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.pts-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
}
.pts-brand:hover { color: #fff; text-decoration: none; }
.pts-brand-mark {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--accent-white);
  color: var(--primary-color);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px;
  flex: none;
}
.pts-brand-text { line-height: 1.15; }
.pts-brand-text b { display:block; font-size: 16px; letter-spacing: 0.5px;}
.pts-brand-text span { display:block; font-size: 10.5px; letter-spacing: 1.5px; opacity: 0.85; font-family: var(--font-body);}

.pts-nav { display: flex; align-items: center; gap: 4px; }
.pts-nav a {
  color: #f2f2f2;
  text-decoration: none;
  font-size: 15px;
  padding: 10px 16px;
  border-radius: 6px;
  white-space: nowrap;
}
.pts-nav a:hover { background: rgba(255,255,255,0.14); color: #fff; }
.pts-nav a.active { background: var(--primary-dark); color: #fff; font-weight: 600; }

.pts-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 860px) {
  .pts-nav {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--primary-color);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
    display: none;
  }
  .pts-nav.open { display: flex; }
  .pts-nav a { padding: 12px 24px; border-radius: 0; }
  .pts-nav-toggle { display: block; }
}

/* ---------------- Hero ---------------- */
.pts-hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: #fff;
  overflow: hidden;
}
.pts-hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 24px 64px;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 780px) {
  .pts-hero-inner { grid-template-columns: 1fr; padding: 48px 20px 40px; }
}
.pts-hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-size: 12.5px;
  color: #e4e4e5;
  font-family: var(--font-display);
  margin: 0 0 14px;
}
.pts-hero h1 {
  color: #fff;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
  margin: 0 0 18px;
  text-wrap: balance;
}
.pts-hero p {
  color: #e9e9ea;
  font-size: 16.5px;
  line-height: 1.75;
  max-width: 56ch;
  margin: 0 0 28px;
}
.pts-hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.pts-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
}
.pts-btn-solid { background: #fff; color: var(--primary-color); }
.pts-btn-solid:hover { background: var(--light-bg); color: var(--primary-dark); }
.pts-btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.pts-btn-outline:hover { background: rgba(255,255,255,0.12); color: #fff; }

/* Decorative database/network motif (SVG, no stock photography) */
.pts-hero-art { position: relative; }
.pts-hero-art svg { width: 100%; height: auto; display: block; }

/* ---------------- Sections ---------------- */
.pts-section { padding: 64px 0; }
.pts-section-alt { background: var(--light-bg); }
.pts-eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12.5px;
  color: var(--primary-color);
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 8px;
}
.pts-section h2 { font-size: clamp(22px, 3vw, 30px); margin: 0 0 14px; text-wrap: balance;}
.pts-lede { font-size: 16px; line-height: 1.8; color: var(--secondary-color); max-width: 76ch; margin: 0 0 36px;}

/* ---------------- Cards / Grid ---------------- */
.pts-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pts-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.pts-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 860px) {
  .pts-grid-3, .pts-grid-2, .pts-grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 861px) and (max-width: 1024px) {
  .pts-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

.pts-card {
  background: var(--light-bg);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.pts-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.pts-card .pts-letter {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--primary-color);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.pts-card h3 { font-size: 17.5px; margin: 0 0 8px; color: var(--secondary-color); }
.pts-card p { font-size: 14.5px; line-height: 1.75; margin: 0; color: #666; }

/* ---------------- KPI Stat strip ---------------- */
.pts-stats {
  background: var(--secondary-color);
  color: #fff;
}
.pts-stats .pts-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 24px;
}
@media (max-width: 780px) {
  .pts-stats .pts-wrap { grid-template-columns: repeat(2, 1fr); }
}
.pts-stat { text-align: center; }
.pts-stat .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 36px);
  color: var(--primary-tint);
  display: block;
  font-variant-numeric: tabular-nums;
}
.pts-stat .label { font-size: 13.5px; color: #d6d6d6; margin-top: 6px; line-height: 1.5; }

/* ---------------- Pillars (services) ---------------- */
.pts-pillar {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 18px;
  padding: 28px 0;
  border-top: 1px solid var(--primary-tint);
}
.pts-pillar:first-of-type { border-top: none; }
.pts-pillar-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
  color: var(--primary-tint);
}
.pts-pillar h3 { margin: 0 0 6px; font-size: 19px; }
.pts-pillar-list { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.pts-pillar-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--secondary-color);
}
.pts-pillar-list b { color: var(--secondary-color); }
.pts-pillar-list li::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--primary-color);
  margin-top: 6px;
}
.pts-chip-list { list-style:none; margin:14px 0 0; padding:0; display:flex; flex-wrap:wrap; gap:10px; }
.pts-chip-list li {
  font-size: 14px;
  color: var(--secondary-color);
  background: #fff;
  border: 1px solid var(--primary-tint);
  border-radius: 8px;
  padding: 9px 14px;
  display:flex; align-items:center; gap:8px;
}
.pts-chip-list li::before { content: "›"; color: var(--primary-color); font-weight:700; }

/* ---------------- Table ---------------- */
.pts-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
.pts-table th {
  background: var(--primary-color);
  color: #fff;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  padding: 14px 18px;
}
.pts-table td {
  padding: 14px 18px;
  font-size: 14.5px;
  border-bottom: 1px solid var(--primary-tint);
  color: var(--secondary-color);
}
.pts-table tr:nth-child(even) td { background: var(--light-bg); }
.pts-table td.num, .pts-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.pts-table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-card); }

/* ---------------- Client logos / list ---------------- */
.pts-client-list { list-style:none; margin:0; padding:0; display:grid; grid-template-columns: repeat(2,1fr); gap: 10px 20px; }
@media (max-width: 700px){ .pts-client-list{ grid-template-columns: 1fr; } }
.pts-client-list li {
  font-size: 14.5px;
  color: var(--secondary-color);
  padding: 10px 0;
  border-bottom: 1px dashed var(--primary-tint);
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
}
.pts-client-list li::before { content:"✓"; color: var(--primary-color); font-weight:700; }

/* ---------------- Case study cards ---------------- */
.pts-case {
  background: #fff;
  border: 1px solid var(--primary-tint);
  border-radius: var(--radius);
  padding: 26px;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
}
.pts-case-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--light-bg); color: var(--primary-color);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-weight:700;
}
.pts-case h3 { margin: 0 0 8px; font-size: 17px; color: var(--primary-color); }
.pts-case p { margin: 0; font-size: 14.5px; line-height: 1.75; color: #5a5a5a; }

/* ---------------- Contact ---------------- */
.pts-contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 860px) { .pts-contact-grid { grid-template-columns: 1fr; } }
.pts-contact-item { display: grid; grid-template-columns: 40px 1fr; gap: 14px; margin-bottom: 22px; }
.pts-contact-item .ic {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--primary-color); color: #fff;
  display:flex; align-items:center; justify-content:center; flex: none;
}
.pts-contact-item h4 { margin: 0 0 4px; font-size: 15px; color: var(--secondary-color); font-family: var(--font-display); }
.pts-contact-item p, .pts-contact-item a { margin: 0; font-size: 14.5px; line-height: 1.7; color: #5a5a5a; text-decoration: none; }
.pts-contact-item a:hover { color: var(--primary-color); text-decoration: underline; }
.pts-map-frame {
  width: 100%; height: 340px; border: 0; border-radius: var(--radius);
  filter: grayscale(0.15);
}

/* ---------------- Footer ---------------- */
.pts-footer {
  background: var(--secondary-color);
  color: #d8d8d8;
}
.pts-footer .pts-wrap {
  padding: 36px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13.5px;
}
.pts-footer a { color: #fff; }
.pts-back-top {
  display: inline-flex; align-items:center; gap:6px;
  color: #d8d8d8; text-decoration: none; font-size: 13.5px;
}
.pts-back-top:hover { color: #fff; }

/* ---------------- Redirect stub ---------------- */
.pts-redirect {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}
.pts-redirect-box { max-width: 440px; }
.pts-redirect-box h1 { font-size: 20px; }
.pts-redirect-box p { color: #666; font-size: 14.5px; line-height: 1.7; }

/* ---------------- Utility ---------------- */
.pts-center { text-align: center; }
.pts-mt-0 { margin-top: 0; }