@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@400;500;600;700&family=Sarabun:wght@300;400;500;600&display=swap');

:root {
  --orange: #f57929;
  --orange-dark: #dd6216;
  --orange-light: #fff1e6;
  --ink: #2d3142;
  --ink-soft: #5c6474;
  --bg: #fffaf6;
  --bg-alt: #f8f2ea;
  --surface: #ffffff;
  --header-bg: rgba(255, 250, 246, 0.82);
  --border: #f1e2d3;
  --radius: 20px;
  --radius-sm: 12px;
  --max-width: 1140px;
  --shadow-sm: 0 4px 14px rgba(45, 49, 66, 0.05);
  --shadow-md: 0 14px 30px -8px rgba(45, 49, 66, 0.1);
  --shadow-glow: 0 16px 32px -8px rgba(245, 121, 41, 0.28);
  --transition-theme: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode: explicit override */
:root[data-theme="dark"] {
  --orange: #ff8a3d;
  --orange-dark: #ffa564;
  --orange-light: rgba(255, 138, 61, 0.16);
  --ink: #fbf6f2;
  --ink-soft: #cbc2ba;
  --bg: #17140f;
  --bg-alt: #201b15;
  --surface: #241f18;
  --header-bg: rgba(23, 20, 15, 0.82);
  --border: #3a3226;
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 14px 30px -8px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 16px 32px -8px rgba(255, 138, 61, 0.32);
}

/* Dark mode: follow system preference when no explicit choice is stored */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --orange: #ff8a3d;
    --orange-dark: #ffa564;
    --orange-light: rgba(255, 138, 61, 0.16);
    --ink: #fbf6f2;
    --ink-soft: #cbc2ba;
    --bg: #17140f;
    --bg-alt: #201b15;
    --surface: #241f18;
    --header-bg: rgba(23, 20, 15, 0.82);
    --border: #3a3226;
    --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 14px 30px -8px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 16px 32px -8px rgba(255, 138, 61, 0.32);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Sarabun", "Segoe UI", "Noto Sans Thai", Tahoma, sans-serif;
  color: var(--ink-soft);
  background: var(--bg);
  line-height: 1.7;
  transition: background-color var(--transition-theme), color var(--transition-theme);
}

h1, h2, h3 {
  font-family: "Kanit", "Segoe UI", sans-serif;
  color: var(--ink);
  font-weight: 600;
  transition: color var(--transition-theme);
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo {
  font-family: "Kanit", sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.logo span { color: var(--orange); }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-right: auto;
  margin-left: 32px;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

.nav a:hover { color: var(--orange-dark); }

.nav-cta {
  background: var(--orange);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: 0 8px 18px -4px rgba(245, 121, 41, 0.4);
}

.nav-cta:hover { background: var(--orange-dark); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-theme), border-color var(--transition-theme), transform 0.2s ease;
}

.theme-toggle:hover { transform: translateY(-2px); color: var(--orange-dark); }

.theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  display: block;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--bg);
  padding: 100px 0 64px;
  transition: background-color var(--transition-theme);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}

.hero-orb-1 {
  width: 440px;
  height: 440px;
  top: -140px;
  right: -100px;
  background: radial-gradient(circle, var(--orange) 0%, transparent 70%);
  animation: orbFloat1 18s ease-in-out infinite;
}

.hero-orb-2 {
  width: 340px;
  height: 340px;
  bottom: -120px;
  left: -80px;
  background: radial-gradient(circle, var(--orange-dark) 0%, transparent 70%);
  animation: orbFloat2 22s ease-in-out infinite;
}

.hero-orb-3 {
  width: 260px;
  height: 260px;
  top: 40%;
  left: 50%;
  background: radial-gradient(circle, var(--orange) 0%, transparent 70%);
  opacity: 0.3;
  animation: orbFloat3 26s ease-in-out infinite;
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, 50px) scale(1.15); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -40px) scale(1.1); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-60%, -40%) scale(1.2); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-orb { animation: none; }
}

.hero-inner { position: relative; z-index: 1; text-align: center; }

.eyebrow {
  display: inline-block;
  color: var(--orange-dark);
  background: var(--orange-light);
  border: 1px solid var(--border);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 12.5px;
  padding: 8px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.3;
  margin: 0 0 20px;
}

.hero h1 span { color: var(--orange); }

.hero-sub {
  max-width: 640px;
  margin: 0 auto 32px;
  color: var(--ink-soft);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

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

.btn-primary:hover { box-shadow: 0 20px 36px -6px rgba(245, 121, 41, 0.4); }

.btn-outline {
  background: var(--surface);
  color: var(--ink);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover { border-color: var(--orange); color: var(--orange-dark); }

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-stats div {
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 28px;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.hero-stats strong {
  display: block;
  font-family: "Kanit", sans-serif;
  font-size: 28px;
  color: var(--orange);
}

.hero-stats span {
  font-size: 13px;
  color: var(--ink-soft);
}

/* Sections */
.section { padding: 84px 0; }

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

.section-tag {
  color: var(--orange-dark);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 13px;
  margin: 0 0 10px;
}

.section h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  margin: 0 0 40px;
  max-width: 560px;
}

.grid { display: grid; gap: 24px; }

.services-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease, background-color var(--transition-theme), border-color var(--transition-theme);
}

.card:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: var(--orange-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--orange-dark);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

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

/* Platforms */
.platform-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.platform-list span {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 700;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

/* Process */
.process-grid { grid-template-columns: repeat(4, 1fr); }

.step-num {
  display: inline-block;
  font-family: "Kanit", sans-serif;
  color: var(--orange);
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.step h3 { margin: 0 0 8px; font-size: 18px; }

.step p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* Why */
.why-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}

.why-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.why-list li {
  padding-left: 28px;
  position: relative;
  color: var(--ink-soft);
}

.why-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
}

.why-card {
  background: linear-gradient(135deg, var(--ink) 0%, #3e4c59 60%, var(--orange-dark) 130%);
  color: #fff;
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-md);
}

.why-card h3 { margin: 0 0 12px; font-size: 22px; color: #fff; }

.why-card p { margin: 0 0 24px; opacity: 0.9; }

.why-card .btn-primary {
  background: #fff;
  color: var(--orange-dark);
  box-shadow: none;
}

.why-card .btn-primary:hover { background: #fff4ec; }

/* Contact */
.contact-section { text-align: center; }

.contact-sub {
  max-width: 560px;
  margin: 0 auto 40px;
  color: var(--ink-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 780px;
  margin: 0 auto;
}

.contact-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease, background-color var(--transition-theme), border-color var(--transition-theme);
}

.contact-item:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.contact-item strong { color: var(--orange-dark); font-size: 14px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 24px 0;
  transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* Responsive */
@media (max-width: 860px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .why-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    display: none;
    margin: 0;
  }
  .nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 28px; }
  .header-inner { gap: 8px; }
}