/* ==========================================================================
   ทะเบียนมงคล (TabienPro) - style.css
   Mobile-First, Flexbox/Grid, ธีมทอง-ดำ-ขาว หรูหรา น่าเชื่อถือ สิริมงคล
   ========================================================================== */

/* --- 1. ตัวแปรสี/ฟอนต์/ระยะห่างส่วนกลาง --- */
:root {
  --color-black: #111111;
  --color-black-soft: #1c1c1e;
  --color-gold: #c9a227;
  --color-gold-light: #e8cf7a;
  --color-white: #ffffff;
  --color-cream: #faf6ec;
  --color-text: #2a2a2a;
  --color-text-muted: #6b6b6b;
  --color-border: #e5decb;
  --color-danger: #b23b3b;
  --color-success: #2e7d32;

  --font-base: "Segoe UI", "Prompt", "Sarabun", system-ui, sans-serif;

  --container-width: 1180px;
  --radius: 10px;
  --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.08);
  --transition: 0.25s ease;
}

/* --- 2. Reset พื้นฐาน --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  font-size: 16px;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

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

.section { padding: 60px 0; }
.section--tight { padding: 40px 0; }
.section--dark { background: var(--color-black); color: var(--color-white); }
.section--cream { background: var(--color-cream); }

.section-title {
  font-size: 1.8rem;
  margin-bottom: 8px;
  color: var(--color-black);
}
.section--dark .section-title { color: var(--color-gold-light); }
.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}
.section--dark .section-subtitle { color: #cfcfcf; }

/* --- 3. ปุ่ม --- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn--primary {
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  color: var(--color-black);
}
.btn--primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn--outline {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: transparent;
}
.btn--outline:hover { background: var(--color-gold); color: var(--color-black); }
.btn--small { padding: 8px 18px; font-size: 0.9rem; }
.btn--block { display: block; width: 100%; }

/* --- 4. Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-black);
  border-bottom: 1px solid rgba(201, 162, 39, 0.35);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: var(--container-width);
  margin: 0 auto;
}
.nav-brand {
  display: flex;
  flex-direction: column;
  color: var(--color-white);
}
.nav-brand strong {
  color: var(--color-gold-light);
  font-size: 1.3rem;
  letter-spacing: 0.5px;
}
.nav-brand span { font-size: 0.7rem; color: #bdbdbd; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  z-index: 110;
}
.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--color-gold-light);
  transition: var(--transition);
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  height: 100vh;
  width: min(78vw, 320px);
  background: var(--color-black-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 90px 28px 28px;
  transition: right var(--transition);
}
.nav-menu.is-open { right: 0; }
.nav-menu a {
  color: var(--color-white);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-weight: 500;
}
.nav-menu a:hover, .nav-menu a.is-current { color: var(--color-gold-light); }
.nav-menu .btn { margin-top: 16px; text-align: center; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .nav-menu {
    position: static;
    height: auto;
    width: auto;
    flex-direction: row;
    align-items: center;
    background: transparent;
    padding: 0;
    gap: 28px;
  }
  .nav-menu a { border-bottom: none; padding: 4px 0; }
  .nav-menu .btn { margin-top: 0; }
}

/* --- 5. Hero --- */
.hero {
  background: radial-gradient(circle at top right, #262218, var(--color-black) 60%);
  color: var(--color-white);
  padding: 70px 0 90px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--color-gold-light);
  margin-bottom: 16px;
  line-height: 1.3;
}
.hero p.hero-lead {
  color: #d8d3c4;
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
}

.quick-search {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  background: var(--color-white);
  padding: 8px;
  border-radius: 999px;
  box-shadow: var(--shadow-card);
}
.quick-search input {
  flex: 1;
  border: none;
  padding: 10px 16px;
  border-radius: 999px;
  outline: none;
}
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
  font-size: 0.85rem;
  color: var(--color-gold-light);
}
.trust-badges li { border: 1px solid rgba(201,162,39,0.5); padding: 6px 14px; border-radius: 999px; }

/* --- 6. Trust bar สถิติ --- */
.stat-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  text-align: center;
  padding: 36px 0;
}
.stat-bar strong { display: block; font-size: 1.8rem; color: var(--color-gold); }
.stat-bar span { color: var(--color-text-muted); font-size: 0.9rem; }
@media (min-width: 700px) { .stat-bar { grid-template-columns: repeat(4, 1fr); } }

/* --- 7. หมวดหมู่ยอดนิยม --- */
.category-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .category-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .category-grid { grid-template-columns: repeat(4, 1fr); } }

.category-card {
  background: var(--color-black);
  color: var(--color-white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid rgba(201,162,39,0.3);
  transition: var(--transition);
}
.category-card:hover { transform: translateY(-4px); border-color: var(--color-gold); }
.category-card .icon { font-size: 2rem; margin-bottom: 10px; }
.category-card h3 { color: var(--color-gold-light); margin-bottom: 6px; }
.category-card p { color: #cfcfcf; font-size: 0.9rem; }

/* --- 8. Product Grid & Card --- */
.product-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}
.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-5px); box-shadow: 0 10px 24px rgba(0,0,0,0.14); }
.product-card__img { width: 100%; height: 160px; object-fit: cover; }
.product-card__body { padding: 16px; }
.product-card__plate {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-black);
}
.product-card__sum { color: var(--color-gold); font-size: 0.85rem; margin: 4px 0 8px; }
.product-card__price { font-weight: 700; margin-bottom: 12px; }
.empty-state { grid-column: 1/-1; text-align: center; color: var(--color-text-muted); padding: 40px 0; }

/* --- 9. Features / จุดเด่น --- */
.feature-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }
.feature-item { text-align: center; padding: 10px; }
.feature-item .icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--color-cream);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin: 0 auto 14px; color: var(--color-gold);
  border: 2px solid var(--color-gold-light);
}

/* --- 10. รีวิว --- */
.review-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .review-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .review-grid { grid-template-columns: repeat(3, 1fr); } }
.review-card {
  background: var(--color-cream);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--color-border);
}
.review-card .stars { color: var(--color-gold); margin-bottom: 10px; }
.review-user { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.review-user img { width: 44px; height: 44px; border-radius: 50%; }
.review-user strong { display: block; }
.review-user span { font-size: 0.8rem; color: var(--color-text-muted); }

/* --- 11. CTA Banner --- */
.cta-banner {
  background: linear-gradient(120deg, var(--color-gold), var(--color-gold-light));
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  color: var(--color-black);
}
.cta-banner h2 { margin-bottom: 10px; }
.cta-banner p { margin-bottom: 22px; }

/* --- 12. Blog cards --- */
.blog-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .blog-grid { grid-template-columns: repeat(3, 1fr); } }
.blog-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--color-white);
}
.blog-card img { height: 170px; width: 100%; object-fit: cover; }
.blog-card__body { padding: 18px; }
.blog-card__tag { color: var(--color-gold); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; }
.blog-card h3 { margin: 8px 0; font-size: 1.1rem; }
.blog-card p { color: var(--color-text-muted); font-size: 0.92rem; margin-bottom: 12px; }

/* --- 13. Footer --- */
.site-footer {
  background: var(--color-black);
  color: #d8d3c4;
  padding: 50px 0 24px;
}
.footer-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr;
  margin-bottom: 30px;
}
@media (min-width: 700px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; } }
.footer-col strong.brand { color: var(--color-gold-light); font-size: 1.2rem; }
.footer-col h4 { color: var(--color-gold-light); margin-bottom: 14px; font-size: 1rem; }
.footer-col p, .footer-col li { font-size: 0.9rem; margin-bottom: 8px; color: #bdb9ab; }
.footer-col a:hover { color: var(--color-gold-light); }
.social-icons { display: flex; gap: 12px; margin-top: 12px; }
.social-icons a {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid rgba(201,162,39,0.4);
  display: flex; align-items: center; justify-content: center;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 18px;
  font-size: 0.82rem;
  color: #8f8b7e;
}

/* --- 14. Breadcrumb --- */
.breadcrumb { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 14px; }

/* --- 15. หน้าค้นหา/กรอง (products.html) --- */
.search-layout {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) { .search-layout { grid-template-columns: 280px 1fr; } }

.filter-panel {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  align-self: start;
}
.filter-group { margin-bottom: 22px; }
.filter-group h4 { margin-bottom: 10px; font-size: 0.95rem; color: var(--color-black); }
.filter-checkbox { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 0.9rem; }
.filter-range { display: flex; gap: 10px; align-items: center; }
.filter-range input { width: 100%; padding: 8px; border: 1px solid var(--color-border); border-radius: 6px; }
.filter-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-tag {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.82rem;
  cursor: pointer;
  background: var(--color-white);
}
.filter-tag input { display: none; }
.filter-tag:has(input:checked) { background: var(--color-gold); border-color: var(--color-gold); color: var(--color-black); font-weight: 600; }

.quick-filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.quick-filter {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
}
.quick-filter.is-active { background: var(--color-black); color: var(--color-gold-light); border-color: var(--color-black); }

.search-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.search-toolbar select, .search-toolbar input {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.result-count { font-weight: 600; }

/* --- 16. หน้ารายละเอียดสินค้า --- */
.detail-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) { .detail-grid { grid-template-columns: 1fr 1fr; } }
.detail-image img { border-radius: var(--radius); border: 1px solid var(--color-border); }
.detail-price { font-size: 1.6rem; font-weight: 700; color: var(--color-gold); margin: 10px 0 20px; }
.detail-meaning {
  background: var(--color-cream);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 20px;
}
.detail-meaning h2 { font-size: 1.05rem; margin-bottom: 8px; }
.detail-facts { margin-bottom: 24px; }
.detail-facts li { padding: 6px 0; border-bottom: 1px dashed var(--color-border); }
.detail-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* --- 17. ตาราง (การชำระเงิน/รอบจอง) --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  overflow-x: auto;
  display: block;
}
.data-table table { width: 100%; border-collapse: collapse; min-width: 480px; }
.data-table th, .data-table td {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
  font-size: 0.92rem;
}
.data-table th { background: var(--color-black); color: var(--color-gold-light); }

/* --- 18. ขั้นตอน (Steps) --- */
.step-list {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  counter-reset: step;
}
@media (min-width: 700px) { .step-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .step-list { grid-template-columns: repeat(3, 1fr); } }
.step-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  position: relative;
  background: var(--color-white);
}
.step-item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -14px; left: 20px;
  width: 32px; height: 32px;
  background: var(--color-gold);
  color: var(--color-black);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.step-item h3 { margin: 10px 0 8px; }
.step-item p { color: var(--color-text-muted); font-size: 0.92rem; }

/* --- 19. FAQ --- */
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}
.faq-item h3 { font-size: 1rem; margin-bottom: 6px; }
.faq-item p { color: var(--color-text-muted); font-size: 0.92rem; }

/* --- 20. ฟอร์ม --- */
.form-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .form-grid { grid-template-columns: repeat(2, 1fr); } }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1/-1; }
.form-field label { font-weight: 600; font-size: 0.92rem; }
.form-field input, .form-field select, .form-field textarea {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  outline: none;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--color-gold); }
.form-field input.is-invalid, .form-field textarea.is-invalid { border-color: var(--color-danger); }
.field-error { color: var(--color-danger); font-size: 0.8rem; min-height: 1em; }
.form-success {
  background: #e9f5ea;
  color: var(--color-success);
  border: 1px solid #b7ddb9;
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-weight: 600;
}

/* --- 21. Contact page --- */
.contact-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-info li { display: flex; gap: 10px; margin-bottom: 14px; }
.contact-info .icon { color: var(--color-gold); font-size: 1.2rem; }
.map-frame { border: none; width: 100%; height: 300px; border-radius: var(--radius); margin-top: 20px; }

/* --- 22. Blog Post --- */
.post-body h2 { margin: 28px 0 12px; color: var(--color-black); }
.post-body p { margin-bottom: 14px; color: var(--color-text); }
.post-body ul, .post-body ol { margin: 0 0 14px 20px; }
.post-body li { margin-bottom: 6px; list-style: disc; }
.post-hero { border-radius: var(--radius); margin-bottom: 24px; max-height: 380px; width: 100%; object-fit: cover; }

/* --- 23. Reveal animation --- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* --- 24. Utility --- */
.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }