/* ============================================================
   style.css — สไตล์ชีทรวมสำหรับทุกหน้า
   ✏️ จุดแก้ไขสีและฟอนต์ทั้งหมดอยู่ในบล็อก :root ด้านล่าง
   ============================================================ */

/* ✏️ [แก้ไขได้] เปลี่ยนสีหลัก สีเน้น และขนาดตัวอักษรได้ที่นี่ */
:root {
  --primary:        #1C3D5A;   /* สีน้ำเงินเข้ม (หลัก) */
  --primary-light:  #2D6A9F;   /* สีน้ำเงินอ่อน */
  --primary-dark:   #0F2337;   /* สีน้ำเงินเข้มมาก */
  --accent:         #C9941A;   /* สีทองไทย (เน้น) */
  --accent-light:   #E8B84B;   /* สีทองอ่อน */
  --accent-pale:    #FDF5E0;   /* สีพื้นทองอ่อนมาก */
  --bg:             #F8F7F4;   /* สีพื้นหลังหน้าเว็บ */
  --bg-white:       #FFFFFF;
  --bg-dark:        #0F1C2E;   /* พื้นหลังส่วน footer */
  --text-dark:      #1A1A2E;   /* สีข้อความหลัก */
  --text-body:      #374151;   /* สีข้อความทั่วไป */
  --text-muted:     #6B7280;   /* สีข้อความรอง */
  --text-light:     #9CA3AF;
  --border:         #E5E1D8;   /* สีขอบ */
  --success:        #059669;
  --danger:         #DC2626;
  --card-shadow:    0 2px 16px rgba(28, 61, 90, 0.09);
  --card-shadow-hover: 0 8px 32px rgba(28, 61, 90, 0.18);
  --radius:         18px;
  --radius-sm:      10px;
  --radius-xs:      6px;
  --transition:     0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Sarabun', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: 'Sarabun', sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
  letter-spacing: -0.01em;
}

/* ============================================================
   Layout Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-lg { padding: 100px 0; }

.text-center { text-align: center; }
.text-left   { text-align: left; }

.mt-2  { margin-top:  8px; }
.mt-4  { margin-top: 16px; }
.mt-6  { margin-top: 24px; }
.mt-8  { margin-top: 32px; }
.mb-2  { margin-bottom:  8px; }
.mb-4  { margin-bottom: 16px; }
.mb-6  { margin-bottom: 24px; }
.mb-8  { margin-bottom: 32px; }

/* ============================================================
   Section Labels & Headings
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-pale);
  border: 1px solid var(--accent-light);
  padding: 5px 14px;
  border-radius: 99px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 0;
  transition: background var(--transition), box-shadow var(--transition);
  background: rgba(248, 247, 244, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: 0 2px 20px rgba(28,61,90,0.10);
  border-bottom-color: var(--border);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  transition: all var(--transition);
  text-decoration: none;
}

.navbar-nav a:hover {
  color: var(--primary);
  background: var(--accent-pale);
}

.navbar-nav .nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius-xs);
  font-weight: 600;
}

.navbar-nav .nav-cta:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 600;
  font-family: 'Sarabun', sans-serif;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(28, 61, 90, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(28, 61, 90, 0.30);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(201, 148, 26, 0.30);
}

.btn-accent:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 148, 26, 0.40);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.22);
  color: #fff;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: var(--radius);
}

/* Download Buttons (App Store / Play Store) */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 22px;
  background: var(--text-dark);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition);
  min-width: 160px;
}

.download-btn:hover {
  background: #000;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.download-btn.google {
  background: #1a73e8;
}
.download-btn.google:hover { background: #1557b0; color: #fff; }

.download-btn-icon {
  font-size: 22px;
  line-height: 1;
}

.download-btn-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.download-btn-text small {
  font-size: 10px;
  font-weight: 400;
  opacity: 0.85;
}

.download-btn-text strong {
  font-size: 14px;
  font-weight: 700;
}

.download-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

/* ============================================================
   Grid
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

/* ============================================================
   Hero (Shared)
   ============================================================ */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  position: relative;
  overflow: hidden;
  color: #fff;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 0;
  right: 0;
  height: 120px;
  background: var(--bg);
  clip-path: ellipse(60% 100% at 50% 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* ============================================================
   Badge / Tag
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: #dcfce7; color: #15803d; }
.badge-info    { background: #dbeafe; color: #1d4ed8; }
.badge-warning { background: #fef9c3; color: #a16207; }
.badge-gold    { background: var(--accent-pale); color: var(--accent); border: 1px solid var(--accent-light); }
.badge-coming  { background: #f3f4f6; color: var(--text-muted); }

/* ============================================================
   Feature Items
   ============================================================ */
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.feature-icon-primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; }
.feature-icon-accent  { background: linear-gradient(135deg, var(--accent), var(--accent-light)); color: #fff; }
.feature-icon-light   { background: var(--accent-pale); color: var(--accent); }
.feature-icon-blue    { background: #dbeafe; color: #1d4ed8; }
.feature-icon-green   { background: #dcfce7; color: #15803d; }
.feature-icon-purple  { background: #f3e8ff; color: #7c3aed; }

/* ============================================================
   Privacy / Security Highlight
   ============================================================ */
.security-banner {
  background: linear-gradient(135deg, #0f2337 0%, var(--primary) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.security-banner-icon {
  font-size: 48px;
  flex-shrink: 0;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer p, .footer li {
  font-size: 14px;
  line-height: 1.8;
}

.footer a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--transition);
}

.footer a:hover { color: var(--accent-light); }

.footer-links li {
  margin-bottom: 8px;
}

.footer-app-group {
  margin-top: 18px;
}

.footer-app-group:first-of-type {
  margin-top: 0;
}

.footer-app-name {
  display: block;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-app-name:hover {
  color: var(--accent-light);
}

.footer-sub-links {
  list-style: none;
  margin: 0 0 0 12px;
  padding: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  padding-left: 12px;
}

.footer-sub-links li {
  margin-bottom: 5px;
}

.footer-sub-links a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* ============================================================
   Divider
   ============================================================ */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* ============================================================
   Legal Pages (privacy, terms, support)
   ============================================================ */
.legal-hero {
  padding: 110px 0 56px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  text-align: center;
}

.legal-hero h1 { color: #fff; font-size: clamp(1.75rem, 4vw, 2.5rem); }
.legal-hero p  { color: rgba(255,255,255,0.75); margin-top: 10px; }

.legal-body { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; }

.legal-body h2 {
  font-size: 1.35rem;
  color: var(--primary);
  margin: 40px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-pale);
}

.legal-body h3 {
  font-size: 1.05rem;
  color: var(--text-dark);
  margin: 24px 0 8px;
}

.legal-body p { margin-bottom: 14px; }

.legal-body ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 14px;
}

.legal-body ul li { margin-bottom: 6px; }

.legal-body .highlight-box {
  background: var(--accent-pale);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}

.legal-body .info-box {
  background: #dbeafe;
  border-left: 4px solid #3b82f6;
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}

.legal-toc {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.legal-toc h3 { margin: 0 0 12px; font-size: 14px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.legal-toc a {
  display: block;
  font-size: 14px;
  color: var(--primary-light);
  padding: 4px 0;
  text-decoration: none;
}

.legal-toc a:hover { color: var(--accent); }

/* ============================================================
   App Icon Placeholder
   ============================================================ */
.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.app-icon-lg {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  font-size: 56px;
}

img.app-icon,
.app-icon > img {
  object-fit: cover;
  padding: 0;
  background: none;
}

img.brand-icon {
  object-fit: cover;
  padding: 0;
  background: none;
}

/* ============================================================
   Screenshot Placeholder
   ============================================================ */
.screenshot-placeholder {
  background: linear-gradient(135deg, #e8eef5, #d1dde8);
  border-radius: var(--radius);
  aspect-ratio: 9/18;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 2px dashed #b0bfcc;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  padding: 20px;
}

.screenshot-placeholder .icon { font-size: 32px; }

/* ============================================================
   FAQ (Support Page)
   ============================================================ */
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-dark);
  gap: 12px;
  font-size: 15px;
  user-select: none;
}

.faq-question:hover { background: var(--accent-pale); }

.faq-arrow {
  font-size: 18px;
  transition: transform var(--transition);
  flex-shrink: 0;
  color: var(--accent);
}

.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid var(--border);
}

.faq-item.open .faq-answer { display: block; }

/* ============================================================
   Contact Form (Support)
   ============================================================ */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 7px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: 'Sarabun', sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(44, 95, 138, 0.12);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ============================================================
   Stats / Number Highlight
   ============================================================ */
.stat-item {
  text-align: center;
  padding: 24px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 12px;
}

.breadcrumb a { color: rgba(255,255,255,0.65); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb-sep { color: rgba(255,255,255,0.35); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid     { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .section   { padding: 56px 0; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .navbar-nav {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    z-index: 999;
  }

  .navbar-nav.open { display: flex; }
  .navbar-nav a    { width: 100%; text-align: center; padding: 12px; }
  .nav-toggle      { display: flex; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  .hero { padding: 110px 0 70px; }
  .hero::after { display: none; }

  .security-banner { flex-direction: column; text-align: center; }

  .download-group { flex-direction: column; align-items: flex-start; }

  .footer-bottom { flex-direction: column; text-align: center; }

  .legal-hero { padding: 90px 0 40px; }
}

/* ============================================================
   Animation Utilities
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.6s ease forwards;
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ============================================================
   Scroll Animation (via JS)
   ============================================================ */
.scroll-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Print Styles (for legal pages)
   ============================================================ */
@media print {
  .navbar, .footer, .btn, .download-group { display: none !important; }
  .legal-body { padding: 20px; }
  body { background: #fff; }
}