/* ===================================================================
   สไตล์หลักของเว็บไซต์ — แก้สี/ฟอนต์ได้ที่ตัวแปร :root ด้านล่าง
   =================================================================== */

:root {
  /* แก้สีแบรนด์ของคุณที่นี่ */
  --brand: #4f46e5;
  --brand-dark: #4338ca;
  --brand-light: #eef2ff;
  --accent: #06b6d4;

  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --border: #e2e8f0;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px -12px rgba(15, 23, 42, 0.18);
  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.12);
  --maxw: 1100px;
  --font: "IBM Plex Sans Thai", "Noto Sans Thai", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--brand);
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / Navbar ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.98rem;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--brand);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.6rem;
  color: var(--text);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-ghost {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn-lg {
  padding: 15px 30px;
  font-size: 1.08rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 84px 0 72px;
  background: radial-gradient(
      1200px 500px at 80% -10%,
      var(--brand-light),
      transparent
    ),
    var(--bg);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-light);
  color: var(--brand-dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.3rem);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 24px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

/* ภาพจำลองหน้าต่าง browser */
.browser-mock {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}

.browser-bar i {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #e2e8f0;
  display: inline-block;
}
.browser-bar i:nth-child(1) { background: #fca5a5; }
.browser-bar i:nth-child(2) { background: #fcd34d; }
.browser-bar i:nth-child(3) { background: #86efac; }

.browser-body {
  padding: 28px;
  min-height: 260px;
  display: grid;
  gap: 14px;
  background: linear-gradient(180deg, #fff, var(--bg-soft));
}

.skeleton {
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(90deg, #eef2f7, #f8fafc, #eef2f7);
}
.skeleton.w-60 { width: 60%; }
.skeleton.w-80 { width: 80%; }
.skeleton.w-40 { width: 40%; }
.skeleton.tall { height: 90px; }

/* ---------- Sections ---------- */
section {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.bg-soft {
  background: var(--bg-soft);
}

/* ---------- Feature cards ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: var(--brand-light);
  color: var(--brand);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* หัวข้อหมวดภายใน Roadmap grid (กินเต็มแถว) */
.cat-head {
  grid-column: 1 / -1;
  margin-top: 26px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--brand-light);
  display: flex;
  align-items: center;
  gap: 10px;
}
.cat-head:first-child {
  margin-top: 0;
}
.cat-head h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-dark);
}
.cat-head .cat-emoji {
  font-size: 1.4rem;
}

/* ---------- Steps (วิธีใช้งาน) ---------- */
.steps {
  display: grid;
  gap: 22px;
  max-width: 760px;
  margin: 0 auto;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  align-items: start;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.step p {
  color: var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  text-align: right;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text);
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.faq-q::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--brand);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.faq-item.open .faq-q::after {
  transform: rotate(45deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  color: var(--text-muted);
  padding: 0 24px;
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 24px 22px;
}

/* ---------- CTA band ---------- */
.cta {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  padding: 56px 30px;
  margin: 0 auto;
}

.cta h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin-bottom: 12px;
}

.cta p {
  opacity: 0.92;
  font-size: 1.12rem;
  margin-bottom: 28px;
}

.cta .btn-primary {
  background: #fff;
  color: var(--brand-dark);
}

.cta .btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

/* ---------- Legal / content page ---------- */
.page-hero {
  padding: 56px 0 24px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  margin-bottom: 8px;
}

.page-hero p {
  color: var(--text-muted);
}

.prose {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.prose h2 {
  font-size: 1.4rem;
  margin: 36px 0 12px;
}

.prose h3 {
  font-size: 1.15rem;
  margin: 24px 0 8px;
}

.prose p,
.prose li {
  color: #334155;
  margin-bottom: 12px;
}

.prose ul,
.prose ol {
  padding-right: 24px;
  margin-bottom: 16px;
}

.prose li {
  margin-bottom: 6px;
}

.callout {
  background: var(--brand-light);
  border-right: 4px solid var(--brand);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 20px 0;
  color: var(--brand-dark);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-grid .logo {
  color: #fff;
  margin-bottom: 12px;
}

.footer-grid p {
  color: #94a3b8;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 9px;
}

.footer-col a {
  color: #94a3b8;
  font-size: 0.95rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 22px;
  text-align: center;
  color: #64748b;
  font-size: 0.9rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .browser-mock {
    order: -1;
  }
  .features {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .nav-links {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 10px 20px 18px;
    display: none;
  }
  .nav-links.show {
    display: flex;
  }
  .nav-links li {
    border-bottom: 1px solid var(--border);
  }
  .nav-links a {
    display: block;
    padding: 14px 0;
  }
  .nav-links li:last-child {
    border-bottom: none;
    padding-top: 12px;
  }
  .nav-toggle {
    display: block;
  }
  .ext-grid {
    grid-template-columns: 1fr;
  }
}

/* ===================================================================
   Hub: hero แบบกึ่งกลาง + การ์ดส่วนขยาย (GCK Application)
   =================================================================== */

.hero-center {
  text-align: center;
}
.hero-center .lead {
  margin-left: auto;
  margin-right: auto;
}
.hero-center .hero-actions,
.hero-center .hero-meta {
  justify-content: center;
}

/* ตารางส่วนขยาย */
.ext-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 940px;
  margin: 0 auto;
}

.ext-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
}

.ext-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.ext-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.ext-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.6rem;
}

.status {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  white-space: nowrap;
}
.status.ready {
  background: #dcfce7;
  color: #15803d;
}
.status.soon {
  background: #fef3c7;
  color: #b45309;
}

.ext-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.ext-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  flex: 1;
  margin-bottom: 20px;
}

.ext-card .btn {
  width: 100%;
  justify-content: center;
}

.ext-card.is-soon .ext-icon {
  background: #e2e8f0;
  color: #94a3b8;
}

.ext-icon.has-img {
  background: #fff;
  border: 1px solid var(--border);
  padding: 6px;
}
.ext-icon.has-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

/* ปุ่มหลายปุ่มในการ์ด/หน้า detail */
.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Service / รับทำ section */
.service-band {
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  border-radius: var(--radius);
  padding: 56px 40px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  color: #fff;
}

.service-band h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 10px;
}

.service-band p {
  color: #94a3b8;
  font-size: 1.08rem;
  max-width: 560px;
  margin-bottom: 0;
}

.service-band .price-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: #a5b4fc;
}

.service-band .price-tag strong {
  color: #fff;
  font-size: 1.15rem;
}

.service-band-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.btn-facebook {
  background: #1877f2;
  color: #fff;
  border-color: #1877f2;
  white-space: nowrap;
}

.btn-facebook:hover {
  background: #1565d8;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

@media (max-width: 640px) {
  .service-band {
    grid-template-columns: 1fr;
    padding: 36px 24px;
  }
  .service-band-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* Screenshot gallery */
.screenshot-gallery {
  display: grid;
  gap: 20px;
}

.screenshot-gallery img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.screenshot-gallery img:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -12px rgba(15,23,42,0.22);
}

.btn-disabled {
  background: var(--bg-soft);
  color: var(--text-muted);
  border-color: var(--border);
  cursor: not-allowed;
  pointer-events: none;
}

/* การ์ด “เร็วๆ นี้” แบบเส้นประ สำหรับชวนติดตาม */
.ext-card.placeholder {
  border-style: dashed;
  background: var(--bg-soft);
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  min-height: 200px;
}
.ext-card.placeholder:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--brand);
}
.ext-card.placeholder .ext-icon {
  background: #e2e8f0;
  color: #94a3b8;
  margin-bottom: 12px;
}