/* ==========================================================================
   WINMAKER HOLDING — HỆ THỐNG 5 MÀU PHONG THỦY HOÀNG GIA (ROYAL PALETTE)
   1. Đỏ Đô Đậm:      #C60300 (Hỏa chủ đạo - Quyết đoán, CTA, HOT Status)
   2. Xanh Rừng Đậm:  #063B2D (Mộc nền tảng - Vững chãi, Thịnh vượng, Nền Header/Footer)
   3. Vàng Kim:       #D4AF37 (Kim tài lộc - Sang trọng, Viền Hoàng Gia, Khung Badge)
   4. Vàng Hồng:      #F9D1C5 (Rạng Đông 5h30 - Tươi mới, Điểm nhấn Hover, Sub-tags)
   5. Trắng Ngà:      #F6F5F2 (Silk hoàng gia - Nền dịu mắt, Tinh khiết, Đọc tối ưu)
   ========================================================================== */

:root {
  --c-crimson: #C60300;
  --c-forest: #063B2D;
  --c-gold: #D4AF37;
  --c-rosegold: #F9D1C5;
  --c-ivory: #F6F5F2;
  
  --primary: var(--c-crimson);
  --green: var(--c-forest);
  --gold: var(--c-gold);
  --rosegold: var(--c-rosegold);
  --paper: var(--c-ivory);
  --text-dark: #1A1A1A;
  --bg-subtle: #FAF9F6;
  --card-bg: #FFFFFF;
  --border-gold: rgba(212, 175, 55, 0.35);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 4px 18px rgba(212, 175, 55, 0.28);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-subtle);
  color: var(--text-dark);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   HEADER & NAVIGATION — TỐI ƯU SANG TRỌNG THEO YÊU CẦU RICHDAD NAMTRẦN
   ========================================================================== */
header {
  background-color: var(--c-forest);
  color: var(--c-ivory);
  padding: 1rem 1.5rem;
  border-bottom: 3px solid var(--c-gold);
  box-shadow: 0 4px 16px rgba(6, 59, 45, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--c-ivory);
}
.brand-logo-wrap {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid var(--c-gold);
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.brand-title {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--c-ivory);
}
.brand-tag {
  font-size: 0.8rem;
  opacity: 0.92;
  color: var(--c-gold);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* KHỐI ĐIỀU HƯỚNG HEADER CHUẨN */
.nav-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}
.nav-btn-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--c-crimson), #9B0200);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  border: 1.5px solid var(--c-gold);
  box-shadow: 0 3px 10px rgba(198, 3, 0, 0.35);
  transition: all 0.25s ease;
}
.nav-btn-home:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(198, 3, 0, 0.45);
  background: linear-gradient(135deg, #E00400, var(--c-crimson));
}

/* NÚT & DROPDOWN KẾT NỐI HỆ THỐNG SỐ */
.social-network-dropdown {
  position: relative;
  display: inline-block;
}
.social-network-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(246, 245, 242, 0.12);
  color: var(--c-ivory);
  border: 1.5px solid var(--c-gold);
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.social-network-trigger:hover, .social-network-trigger.active {
  background: var(--c-gold);
  color: var(--c-forest);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.social-network-trigger .arrow-icon {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}
.social-network-dropdown:hover .social-network-menu,
.social-network-dropdown.open .social-network-menu {
  display: grid;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.social-network-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 320px;
  background: #04241B;
  border: 2px solid var(--c-gold);
  border-radius: 12px;
  padding: 0.75rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), var(--shadow-gold);
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s ease;
}
.social-menu-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.65rem;
  background: rgba(246, 245, 242, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 8px;
  text-decoration: none;
  color: var(--c-ivory);
  transition: all 0.2s ease;
}
.social-menu-item:hover {
  background: rgba(212, 175, 55, 0.22);
  border-color: var(--c-gold);
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(212, 175, 55, 0.3);
}
.social-item-icon {
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}
.social-item-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.social-item-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-ivory);
  white-space: nowrap;
}
.social-item-badge {
  font-size: 0.68rem;
  color: var(--c-rosegold);
  opacity: 0.9;
  white-space: nowrap;
}

/* ==========================================================================
   SMART CROSS-NAVIGATION BAR (12 PHÂN KHU)
   ========================================================================== */
.hub-nav-bar {
  background: linear-gradient(90deg, #04251C, #063B2D, #04251C);
  border-bottom: 2px solid var(--c-gold);
  padding: 0.6rem 1rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--c-gold) transparent;
  justify-content: center;
  flex-wrap: wrap;
}
.hub-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  background: rgba(246, 245, 242, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 6px;
  color: var(--c-ivory);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.hub-nav-btn:hover {
  background: var(--c-gold);
  color: var(--c-forest);
  border-color: var(--c-gold);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.35);
  transform: translateY(-1.5px);
}
.hub-nav-btn.active {
  background: linear-gradient(135deg, var(--c-crimson), #9B0200);
  color: #ffffff;
  border-color: var(--c-gold);
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(198, 3, 0, 0.4);
}

/* ==========================================================================
   HERO & MAIN CONTENT CONTAINER
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  flex: 1;
  width: 100%;
}
.hero {
  text-align: center;
  margin-bottom: 2.5rem;
  background: linear-gradient(180deg, #FFFFFF 0%, rgba(249, 209, 197, 0.15) 100%);
  padding: 2.5rem 1.5rem;
  border-radius: 16px;
  border: 1.5px solid var(--border-gold);
  box-shadow: var(--shadow-sm);
}
.hero h1 {
  font-size: 2rem;
  color: var(--c-forest);
  margin-bottom: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.5px;
}
.hero p {
  font-size: 1.1rem;
  color: #444444;
  max-width: 820px;
  margin: 0 auto 1.25rem;
}
.badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.badge-gold { background-color: var(--c-gold); color: var(--c-forest); box-shadow: 0 2px 6px rgba(212, 175, 55, 0.3); }
.badge-crimson { background-color: var(--c-crimson); color: #FFFFFF; }
.badge-forest { background-color: var(--c-forest); color: var(--c-ivory); }

/* GRID MATRIX */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3rem;
}
.card {
  background-color: var(--card-bg);
  border-radius: 14px;
  border: 1.5px solid rgba(212, 175, 55, 0.3);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-crimson), var(--c-gold), var(--c-forest));
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), var(--shadow-gold);
  border-color: var(--c-gold);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.card-icon {
  font-size: 2.2rem;
  line-height: 1;
  filter: drop-shadow(0 3px 6px rgba(0,0,0,0.15));
}
.card h3 {
  font-size: 1.25rem;
  color: var(--c-forest);
  margin-bottom: 0.6rem;
  font-weight: 800;
}
.card p {
  color: #555555;
  font-size: 0.94rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}
.card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  background: linear-gradient(135deg, var(--c-forest), #04251C);
  color: var(--c-ivory);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: 8px;
  border: 1.5px solid var(--c-gold);
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}
.card-btn:hover {
  background: linear-gradient(135deg, var(--c-crimson), #9B0200);
  color: #ffffff;
  border-color: var(--c-gold);
  box-shadow: 0 4px 12px rgba(198, 3, 0, 0.35);
  transform: translateY(-2px);
}

/* ==========================================================================
   FOOTER STYLING — ĐẲNG CẤP HOÀNG GIA & CĂN GIỮA TOÀN DIỆN
   ========================================================================== */
footer {
  background-color: var(--c-forest);
  color: var(--c-ivory);
  padding: 3.5rem 1.5rem 1.75rem;
  border-top: 4px solid var(--c-gold);
  margin-top: auto;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.25rem;
}
.footer-col h4 {
  font-size: 1.15rem;
  color: var(--c-gold);
  margin-bottom: 1.1rem;
  font-weight: 800;
  border-bottom: 1.5px solid rgba(212, 175, 55, 0.4);
  padding-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.footer-col p, .footer-col li {
  font-size: 0.92rem;
  opacity: 0.92;
  margin-bottom: 0.6rem;
  line-height: 1.65;
}
.footer-col ul { list-style: none; }
.footer-col a {
  color: var(--c-ivory);
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: var(--c-rosegold);
  text-decoration: underline;
}
.footer-ceo-box {
  background: rgba(246, 245, 242, 0.08);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(212, 175, 55, 0.3);
  margin-top: 0.75rem;
}
.footer-ceo-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}
.footer-ceo-item:last-child { margin-bottom: 0; }
.footer-ceo-item a {
  color: var(--c-rosegold);
  font-weight: 700;
  text-decoration: none;
}
.footer-ceo-item a:hover {
  color: var(--c-gold);
  text-decoration: underline;
}

/* 2 LOGO CĂN GIỮA CỘT - KÍCH THƯỚC BẰNG NHAU HOÀN HẢO */
.footer-badges-container {
  margin-top: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  text-align: center;
}
.footer-badge-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 145px;
  height: 50px;
  background: #ffffff;
  border-radius: 6px;
  padding: 4px 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.35);
  border: 1.5px solid rgba(212, 175, 55, 0.5);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}
.footer-badge-box:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.5);
}
.footer-badge-box img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  vertical-align: middle;
  display: block;
  margin: 0 auto;
}

/* CAM KẾT BẢO MẬT - CĂN GIỮA TOÀN BỘ TIÊU ĐỀ & NỘI DUNG */
.footer-privacy-commit {
  background: rgba(0, 0, 0, 0.3);
  border-top: 2px solid var(--c-gold);
  border-bottom: 2px solid var(--c-gold);
  border-left: none;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  margin: 0 auto 2.25rem;
  max-width: 1200px;
  text-align: center;
}
.footer-privacy-commit h5 {
  color: var(--c-gold);
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
  width: 100%;
}
.footer-privacy-commit p {
  font-size: 0.92rem;
  line-height: 1.7;
  opacity: 0.95;
  color: var(--c-ivory);
  margin: 0 auto;
  max-width: 980px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(246,245,242,0.18);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.88rem;
  line-height: 1.7;
  opacity: 0.92;
}
.footer-bottom strong { color: var(--c-gold); font-weight: 800; }
.footer-bottom a { color: var(--c-gold); text-decoration: underline; font-weight: 700; }

/* RESPONSIVE TRÊN MOBILE & TABLET */
@media (max-width: 768px) {
  header { padding: 0.85rem 1rem; }
  .header-container { flex-direction: column; align-items: stretch; gap: 0.75rem; text-align: center; }
  .brand { justify-content: center; }
  .nav-links { justify-content: center; }
  .social-network-menu {
    right: 50%;
    transform: translateX(50%) translateY(-8px);
    width: 300px;
  }
  .social-network-dropdown:hover .social-network-menu,
  .social-network-dropdown.open .social-network-menu {
    transform: translateX(50%) translateY(0);
  }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.95rem; }
  .grid { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; text-align: center; }
  .footer-col h4 { justify-content: center; }
  .footer-ceo-item { justify-content: center; }
}