/* ==========================================================================
   Siam Global Network Enterprise Co., Ltd. — site styles
   ========================================================================== */

:root {
  --color-primary: #0b3d63;
  --color-primary-dark: #082a47;
  --color-primary-light: #114f80;
  --color-accent: #d9a441;
  --color-live: #167a45;
  --color-live-bg: rgba(22, 122, 69, 0.12);
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7fa;
  --color-text: #1c2530;
  --color-text-muted: #5b6a78;
  --color-border: #e3e8ee;
  --color-card-bg: #ffffff;
  --shadow-card: 0 4px 18px rgba(11, 61, 99, 0.08);
  --radius: 14px;
  --max-width: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #1a5a8c;
    --color-primary-dark: #0b3d63;
    --color-primary-light: #2c74ab;
    --color-accent: #e3b658;
    --color-live: #4cc487;
    --color-live-bg: rgba(76, 196, 135, 0.14);
    --color-bg: #0f1720;
    --color-bg-alt: #141e29;
    --color-text: #eaf0f6;
    --color-text-muted: #a3b2c2;
    --color-border: #223140;
    --color-card-bg: #16212c;
    --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans Thai", "Inter", -apple-system, "Segoe UI", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
}
.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name-th {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text);
}

.brand-name-en {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 15px;
  font-weight: 500;
}
.nav-links a {
  color: var(--color-text-muted);
}
.nav-links a:hover {
  color: var(--color-primary-light);
  text-decoration: none;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(circle at 15% 20%, rgba(217, 164, 65, 0.14), transparent 45%),
    linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  padding: 88px 24px 72px;
  text-align: center;
}

.hero .container {
  max-width: 820px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(217, 164, 65, 0.12);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(28px, 4.2vw, 42px);
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--color-text);
}

.hero .en-name {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--color-text-muted);
  margin: 0 0 26px;
  font-weight: 500;
}

.hero .slogan {
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--color-text);
  max-width: 640px;
  margin: 0 auto 12px;
}

.hero .slogan-en {
  font-size: 14px;
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(11, 61, 99, 0.25);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}

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

.section-alt {
  background: var(--color-bg-alt);
}

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

.section-tag {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 12px;
  font-weight: 800;
}

.section-head p {
  color: var(--color-text-muted);
  font-size: 15.5px;
  margin: 0;
}

/* ---------- Feature / service cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(11, 61, 99, 0.08);
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.card h3 {
  font-size: 19px;
  margin: 0 0 10px;
  font-weight: 700;
}

.card p {
  color: var(--color-text-muted);
  font-size: 15px;
  margin: 0;
}

/* ---------- Apps section ---------- */
.app-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.app-card-head .card-icon {
  margin-bottom: 0;
}

.app-status {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background: rgba(217, 164, 65, 0.12);
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}

.app-en {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ---------- Apps page (product picker) ---------- */
.apps-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
}

.apps-tabs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: sticky;
  top: 90px;
}

.apps-tab {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px 16px;
  cursor: pointer;
  font-family: inherit;
  color: var(--color-text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.apps-tab:hover {
  border-color: var(--color-primary-light);
}

.apps-tab.active {
  border-color: var(--color-primary);
  background: rgba(11, 61, 99, 0.06);
}

.apps-tab-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(11, 61, 99, 0.08);
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.apps-tab-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.apps-tab-text small {
  color: var(--color-text-muted);
  font-size: 12px;
}

.apps-detail {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-card);
  min-height: 260px;
}

.apps-panel-detail {
  display: none;
}

.apps-panel-detail.active {
  display: block;
}

.apps-panel-detail h2 {
  font-size: 24px;
  margin: 0 0 4px;
  font-weight: 800;
}

.apps-panel-detail p {
  color: var(--color-text-muted);
  font-size: 15.5px;
  margin-top: 16px;
  max-width: 640px;
}

.apps-tab-icon.has-img,
.card-icon.has-img {
  background: transparent;
  padding: 0;
}

.apps-tab-icon.has-img img,
.card-icon.has-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

.card-icon.has-img {
  width: 56px;
  height: 56px;
}

.app-status-live {
  color: var(--color-live);
  background: var(--color-live-bg);
}

.apps-panel-detail .app-meta {
  font-size: 13.5px;
  margin-top: 8px;
}

.apps-panel-detail .app-tagline {
  color: var(--color-text);
  font-size: 17px;
  font-weight: 600;
  margin-top: 18px;
}

.platform-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.chip {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 4px 12px;
  border-radius: 999px;
}

.chip-live {
  color: var(--color-live);
  background: var(--color-live-bg);
  border-color: transparent;
}

.app-subhead {
  font-size: 16px;
  font-weight: 700;
  margin: 32px 0 14px;
}

.app-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.app-features li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px 16px;
}

.app-features strong {
  font-size: 14.5px;
}

.app-features span {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.app-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.app-info {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px 16px;
}

.app-info h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
}

.apps-panel-detail .app-info p {
  margin: 0;
  font-size: 13.5px;
}

.app-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.apps-panel-detail .app-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  font-size: 13.5px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  max-width: 640px;
  margin: 0 auto;
}

.contact-card {
  text-align: center;
  padding: 28px 20px;
}

.contact-card .card-icon {
  margin: 0 auto 16px;
}

.contact-card h3 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin: 0 0 10px;
  font-weight: 700;
}

.contact-card p,
.contact-card a {
  font-size: 15.5px;
  color: var(--color-text);
  margin: 0;
}

.placeholder-note {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-accent);
  background: rgba(217, 164, 65, 0.12);
  padding: 3px 10px;
  border-radius: 999px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  background: var(--color-bg-alt);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

/* ---------- Legal page (privacy) ---------- */
.legal-page {
  padding: 56px 0 80px;
}

.legal-page .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.legal-page h1 {
  font-size: clamp(26px, 3.6vw, 34px);
  margin: 0 0 8px;
  font-weight: 800;
}

.legal-page .updated {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 40px;
}

.legal-page h2 {
  font-size: 20px;
  margin: 40px 0 12px;
  font-weight: 700;
  color: var(--color-primary-light);
}

.legal-page p,
.legal-page li {
  color: var(--color-text);
  font-size: 15.5px;
}

.legal-page ul {
  padding-left: 22px;
}

.legal-page .dpo-box {
  margin-top: 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.legal-page .dpo-box p {
  margin: 4px 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .apps-layout {
    grid-template-columns: 1fr;
  }
  .apps-tabs {
    flex-direction: row;
    overflow-x: auto;
    position: static;
    padding-bottom: 4px;
  }
  .apps-tab {
    flex: 0 0 auto;
  }
  .apps-detail {
    padding: 28px 22px;
  }
  .app-features,
  .app-info-grid {
    grid-template-columns: 1fr;
  }
  section {
    padding: 56px 0;
  }
}