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

:root {
  --brand: #3b82f6;       /* xanh dương nhạt */
  --brand-soft: #eef4ff;
  --bg: #f6f8fc;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(0,0,0,.08);
  --shadow-hover: 0 14px 40px rgba(0,0,0,.14);
}

* {
  box-sizing: border-box;
  font-family: 'Inter', system-ui, sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

/* ===============================
   TOP BAR (ĐỒNG BỘ)
   =============================== */
.topbar {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  color: #fff;
}

.topbar-inner {
  max-width: 1200px;
  margin: auto;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.topbar a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

/* ===============================
   HEADER
   =============================== */
.header {
  background: #fff;
  box-shadow: 0 4px 14px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  max-width: 1200px;
  margin: auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--brand);
  text-decoration: none;
}

/* ===============================
   MENU (HIỆN TRƯỚC MẶT)
   =============================== */
.nav {
  display: flex;
  gap: 18px;
}

.nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 10px;
  transition: .2s;
}

.nav a:hover,
.nav a.active {
  background: var(--brand-soft);
  color: var(--brand);
}

/* ===============================
   PAGE TITLE CARD
   =============================== */
.page-title {
  max-width: 1200px;
  margin: 20px auto;
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
}

.page-title h1 {
  margin: 0;
  font-size: 22px;
  color: var(--brand);
}

.page-title p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
}

/* ===============================
   SHOP GRID
   =============================== */
.shop-container {
  max-width: 1200px;
  margin: auto;
  padding: 20px 20px 60px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

/* ===============================
   PRODUCT CARD
   =============================== */
.product-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: .25s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.product-card img {
  width: 100%;
  height: 170px;
  object-fit: contain;
  background: #f1f4f9;
}

.product-body {
  padding: 14px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-body h3 {
  font-size: 15px;
  margin: 0 0 6px;
}

.product-body p {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 10px;
  line-height: 1.4;
}

.price {
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 12px;
}

/* ===============================
   BUY BUTTON (HOVER PRO)
   =============================== */
.buy-btn {
  margin-top: auto;
  text-align: center;
  background: var(--brand);
  color: #fff;
  padding: 10px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: .2s;
}

.buy-btn:hover {
  background: #2563eb;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59,130,246,.4);
}

/* ===============================
   RESPONSIVE
   =============================== */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 10px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

}
/* ===============================
   HOME PAGE (INDEX)
   =============================== */

.home-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 20px;
}

.home-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin: 20px;
  transition: .25s;
}

.home-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.home-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  color: var(--brand);
}

.home-card p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

.home-card hr {
  border: none;
  border-top: 1px solid #e5e7eb;
  margin: 10px 0;
}

.note {
  color: var(--muted);
  font-size: 13px;
}

/* PAYMENT ROW */
.pay-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
  font-size: 14px;
}

.pay-row button {
  background: var(--brand);
  color: #fff;
  border: none;
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
}

.pay-row button:hover {
  background: #2563eb;
}

.highlight {
  color: #16a34a;
}

/* CONTACT BUTTONS */
.contact-btn {
  display: block;
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: .2s;
}

.contact-btn span {
  color: #e0f2fe;
  font-weight: 600;
}

.contact-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.fb { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.zalo { background: linear-gradient(90deg, #0ea5e9, #38bdf8); }
.discord { background: linear-gradient(90deg, #6366f1, #818cf8); }
.server { background: linear-gradient(90deg, #06b6d4, #22d3ee); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .home-grid {
    grid-template-columns: 1fr;
  }
}
/* ===== LOGO IMAGE (REPLACE TEXT LOGO) ===== */
.logo {
  display: flex;
  align-items: center;
  height: 100%;
}

.logo img {
  height: 42px;          /* an toàn cho desktop */
  max-width: 160px;
  width: auto;
  object-fit: contain;
}

/* Mobile */
@media (max-width: 768px) {
  .logo img {
    height: 36px;
    max-width: 130px;
  }
}