/* ===== ZEV♾️ CYBERPUNK THEME ===== */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0D0D0D;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1a1a1a;
  --text-primary: #E0E0E0;
  --text-secondary: #888;
  --accent: #00FF85;
  --accent-alt: #2CFF05;
  --accent-blue: #1E90FF;
  --accent-glow: rgba(0, 255, 133, 0.4);
  --accent-glow-strong: rgba(0, 255, 133, 0.7);
  --danger: #FF4C6A;
  --warning: #FFB800;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 20px var(--accent-glow);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-alt); text-shadow: 0 0 8px var(--accent-glow); }

/* ===== HEADER / NAV ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,255,133,0.1);
  padding: 0 2rem;
  height: 70px;
  display: flex; align-items: center; justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem; font-weight: 900;
  color: #fff;
  text-shadow: 0 0 10px var(--accent-glow), 0 0 30px var(--accent-glow);
  cursor: pointer;
  letter-spacing: 2px;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex; gap: 2rem; list-style: none; align-items: center;
}
.nav-links a {
  color: var(--text-primary); font-weight: 500; font-size: 0.95rem;
  padding: 0.5rem 0; position: relative;
  transition: var(--transition);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 2px; background: var(--accent);
  transition: width 0.3s ease;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 5px;
}
.hamburger span {
  width: 28px; height: 2px; background: var(--text-primary);
  transition: var(--transition); border-radius: 2px;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== TOP BAR (Zalo + TikTok) ===== */
.top-bar {
  background: linear-gradient(90deg, rgba(0,255,133,0.1), rgba(30,144,255,0.1));
  padding: 8px 2rem;
  display: flex; justify-content: center; gap: 2rem;
  font-size: 0.85rem;
  margin-top: 70px;
  border-bottom: 1px solid rgba(0,255,133,0.08);
  flex-wrap: wrap;
}
.top-bar a {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-weight: 500;
}
.top-bar a:hover { text-shadow: 0 0 12px var(--accent-glow); }

/* ===== HERO BANNER ===== */
.hero {
  position: relative;
  height: 70vh; min-height: 400px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url('images/hero_banner.png') center/cover no-repeat;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(13,13,13,0.7) 0%, rgba(13,13,13,0.4) 50%, rgba(13,13,13,0.95) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 700px; padding: 2rem;
}
.hero-content h1 {
  font-family: var(--font-display);
  font-size: 3.5rem; font-weight: 900;
  color: #fff;
  text-shadow: 0 0 20px var(--accent-glow), 0 0 60px var(--accent-glow);
  margin-bottom: 1rem;
  animation: glowPulse 3s ease-in-out infinite;
}
.hero-content p {
  font-size: 1.15rem; color: var(--text-secondary);
  margin-bottom: 2rem; line-height: 1.8;
}

@keyframes glowPulse {
  0%, 100% { text-shadow: 0 0 20px var(--accent-glow), 0 0 60px var(--accent-glow); }
  50% { text-shadow: 0 0 30px var(--accent-glow-strong), 0 0 80px var(--accent-glow-strong); }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border: none; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  cursor: pointer; transition: var(--transition); text-decoration: none;
}
.btn-neon {
  background: var(--accent); color: #0D0D0D;
  box-shadow: 0 0 15px var(--accent-glow), inset 0 0 15px rgba(255,255,255,0.1);
}
.btn-neon:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--accent-glow-strong), 0 0 60px var(--accent-glow);
  color: #0D0D0D;
}
.btn-outline {
  background: transparent; color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent); color: #0D0D0D;
  box-shadow: var(--shadow-glow);
}
.btn-danger {
  background: var(--danger); color: #fff;
}
.btn-danger:hover {
  box-shadow: 0 0 20px rgba(255,76,106,0.5);
  transform: scale(1.05);
}
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

/* ===== SECTIONS ===== */
.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 700;
  text-align: center; margin-bottom: 3rem;
  color: #fff;
  position: relative;
}
.section-title::after {
  content: ''; display: block;
  width: 60px; height: 3px;
  background: var(--accent);
  margin: 12px auto 0;
  box-shadow: 0 0 10px var(--accent-glow);
  border-radius: 2px;
}

/* ===== PRODUCT CARDS ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
}
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
  display: flex; flex-direction: column;
  position: relative;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), 0 0 30px rgba(0,255,133,0.15);
  border-color: rgba(0,255,133,0.2);
}
.product-card .card-img {
  width: 100%; height: 200px;
  object-fit: cover;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}
.product-card:hover .card-img {
  filter: brightness(1.1);
}
.card-body {
  padding: 1.25rem; flex: 1;
  display: flex; flex-direction: column;
}
.card-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 700;
  color: #fff; margin-bottom: 0.5rem;
}
.card-body .description {
  font-size: 0.88rem; color: var(--text-secondary);
  margin-bottom: 1rem; flex: 1;
  line-height: 1.5;
}
.card-price {
  font-family: var(--font-display);
  font-size: 1.3rem; font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
  margin-bottom: 1rem;
}
.btn-buy {
  width: 100%; padding: 12px;
  background: var(--accent); color: #0D0D0D;
  border: none; border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 700; font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase; letter-spacing: 1px;
}
.btn-buy:hover {
  transform: scale(1.03);
  box-shadow: 0 0 25px var(--accent-glow-strong);
  filter: drop-shadow(0 0 0.5em var(--accent));
}

/* ===== PURCHASED PAGE ===== */
.purchased-list {
  display: flex; flex-direction: column; gap: 1rem;
}
.purchased-item {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  transition: var(--transition);
  flex-wrap: wrap;
}
.purchased-item:hover {
  border-color: rgba(0,255,133,0.2);
  box-shadow: 0 0 15px rgba(0,255,133,0.08);
}
.purchased-info h4 { color: #fff; font-size: 1rem; margin-bottom: 4px; }
.purchased-info span { font-size: 0.82rem; color: var(--text-secondary); }
.btn-download {
  padding: 8px 20px;
  background: transparent; color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-weight: 600; cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body); font-size: 0.88rem;
  text-decoration: none; display: inline-block;
}
.btn-download:hover {
  background: var(--accent); color: #0D0D0D;
  box-shadow: var(--shadow-glow);
}

/* ===== USER BAR ===== */
.user-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-card);
  padding: 10px 18px; border-radius: var(--radius);
  margin-bottom: 2rem;
  border: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
}
.user-bar span { color: var(--text-secondary); font-size: 0.9rem; }
.user-bar strong { color: var(--accent); }
.user-bar button {
  background: none; border: 1px solid var(--text-secondary);
  color: var(--text-secondary); padding: 5px 12px;
  border-radius: 6px; cursor: pointer; font-size: 0.8rem;
  transition: var(--transition);
}
.user-bar button:hover { border-color: var(--accent); color: var(--accent); }

/* ===== ADMIN PANEL ===== */
.admin-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  align-items: center; justify-content: center;
}
.admin-overlay.show { display: flex; }

.admin-login {
  background: var(--bg-card);
  border: 1px solid rgba(0,255,133,0.2);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 90%; max-width: 400px;
  text-align: center;
  box-shadow: 0 0 40px rgba(0,255,133,0.1);
}
.admin-login h2 {
  font-family: var(--font-display);
  color: var(--accent); margin-bottom: 1.5rem;
  font-size: 1.4rem;
}
.admin-login input {
  width: 100%; padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem; margin-bottom: 1rem;
  outline: none; transition: var(--transition);
  font-family: var(--font-body);
}
.admin-login input:focus { border-color: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.admin-login .error-msg { color: var(--danger); font-size: 0.85rem; margin-bottom: 0.5rem; }

/* Admin Dashboard */
.admin-dashboard {
  display: none;
  position: fixed; inset: 0; z-index: 9998;
  background: var(--bg-primary);
  overflow-y: auto;
}
.admin-dashboard.show { display: block; }
.admin-header {
  background: var(--bg-secondary);
  padding: 1rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid rgba(0,255,133,0.15);
  position: sticky; top: 0; z-index: 10;
}
.admin-header h2 {
  font-family: var(--font-display);
  color: var(--accent); font-size: 1.2rem;
}
.admin-content { padding: 2rem; max-width: 1100px; margin: 0 auto; }

.admin-tabs {
  display: flex; gap: 0; margin-bottom: 2rem;
  border-bottom: 2px solid rgba(255,255,255,0.06);
}
.admin-tab {
  padding: 12px 24px;
  background: none; border: none;
  color: var(--text-secondary);
  font-family: var(--font-body); font-size: 0.95rem;
  cursor: pointer; transition: var(--transition);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.admin-tab:hover { color: var(--text-primary); }
.admin-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.admin-section { display: none; }
.admin-section.active { display: block; }

/* Admin form */
.admin-form {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 2rem;
}
.admin-form h3 {
  font-family: var(--font-display);
  color: #fff; font-size: 1rem;
  margin-bottom: 1.2rem;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label {
  font-size: 0.82rem; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.form-group input, .form-group textarea, .form-group select {
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem; outline: none;
  transition: var(--transition);
  font-family: var(--font-body);
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 60px; }
.form-actions { margin-top: 1.2rem; display: flex; gap: 0.8rem; }

/* Admin table */
.admin-table-wrap { overflow-x: auto; }
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.admin-table th, .admin-table td {
  padding: 12px 14px; text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.admin-table th {
  color: var(--accent); font-weight: 600;
  text-transform: uppercase; font-size: 0.78rem;
  letter-spacing: 0.5px;
  background: var(--bg-card);
  position: sticky; top: 0;
}
.admin-table td { color: var(--text-primary); }
.admin-table tr:hover td { background: rgba(0,255,133,0.03); }
.admin-table img { width: 50px; height: 35px; object-fit: cover; border-radius: 4px; }
.badge-visible {
  padding: 3px 10px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 600;
}
.badge-visible.on { background: rgba(0,255,133,0.15); color: var(--accent); }
.badge-visible.off { background: rgba(255,76,106,0.15); color: var(--danger); }

/* ===== CONTACT / FOOTER ===== */
.contact-section {
  text-align: center;
  padding: 3rem 2rem;
  max-width: 700px; margin: 0 auto;
}
.contact-section p { color: var(--text-secondary); margin-bottom: 1rem; line-height: 1.8; }
.contact-links { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; margin-top: 1.5rem; }
.contact-link {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  transition: var(--transition);
  font-weight: 500;
}
.contact-link:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.82rem; color: var(--text-secondary);
}
.footer a { color: var(--accent); }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 0.5rem; flex-wrap: wrap; }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 30px; right: 30px; z-index: 10000;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 24px;
  color: #fff; font-weight: 500;
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateX(150%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
  max-width: 350px;
}
.toast.show { transform: translateX(0); }
.toast .toast-icon { color: var(--accent); margin-right: 8px; font-size: 1.1rem; }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center; padding: 4rem 2rem;
  color: var(--text-secondary);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.4; }
.empty-state p { font-size: 1rem; }

/* ===== PAGE VISIBILITY ===== */
.page { display: none; }
.page.active { display: block; }

/* ===== AUTH MODAL ===== */
.auth-overlay {
  display: none; position: fixed; inset: 0; z-index: 9997;
  background: rgba(0,0,0,0.88); backdrop-filter: blur(12px);
  align-items: center; justify-content: center;
}
.auth-overlay.show { display: flex; }
.auth-box {
  background: var(--bg-card); border: 1px solid rgba(0,255,133,0.15);
  border-radius: var(--radius); padding: 2.5rem;
  width: 92%; max-width: 420px; position: relative;
  box-shadow: 0 0 60px rgba(0,255,133,0.08);
}
.auth-box h2 {
  font-family: var(--font-display); color: #fff;
  font-size: 1.3rem; margin-bottom: 0.3rem; text-align: center;
}
.auth-box .auth-sub { text-align: center; color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 1.8rem; }
.auth-box .input-group { margin-bottom: 1rem; }
.auth-box .input-group label { display: block; font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .5px; }
.auth-box .input-group input {
  width: 100%; padding: 12px 14px; background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.95rem; outline: none;
  transition: var(--transition); font-family: var(--font-body);
}
.auth-box .input-group input:focus { border-color: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.auth-box .auth-error { color: var(--danger); font-size: 0.83rem; text-align: center; margin-bottom: 0.6rem; min-height: 1.2em; }
.auth-box .auth-switch { text-align: center; margin-top: 1.2rem; font-size: 0.88rem; color: var(--text-secondary); }
.auth-box .auth-switch a { cursor: pointer; color: var(--accent); font-weight: 600; }
.auth-close {
  position: absolute; top: 12px; right: 16px; background: none; border: none;
  color: var(--text-secondary); font-size: 1.4rem; cursor: pointer; transition: var(--transition);
}
.auth-close:hover { color: var(--accent); }

/* ===== NAV USER INFO ===== */
.nav-user {
  display: flex; align-items: center; gap: 10px; margin-left: 1rem;
}
.nav-user-info {
  display: flex; flex-direction: column; align-items: flex-end; font-size: 0.8rem; line-height: 1.3;
}
.nav-user-info .nav-username { color: var(--text-primary); font-weight: 600; }
.nav-user-info .nav-balance { color: var(--accent); font-family: var(--font-display); font-size: 0.75rem; }
.nav-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); color: #0D0D0D;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1rem; cursor: pointer;
  transition: var(--transition); font-family: var(--font-display);
}
.nav-avatar:hover { box-shadow: 0 0 15px var(--accent-glow); transform: scale(1.1); }
.nav-guest-btns { display: flex; gap: 8px; }
.nav-guest-btns .btn { padding: 7px 16px; font-size: 0.82rem; }

/* ===== ACCOUNT PAGE ===== */
.account-header {
  background: var(--bg-secondary); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 2rem;
  display: flex; align-items: center; gap: 2rem;
  margin-bottom: 2rem; flex-wrap: wrap;
}
.account-avatar {
  width: 90px; height: 90px; border-radius: var(--radius-sm);
  background: var(--accent); color: #0D0D0D;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; font-weight: 900; font-family: var(--font-display);
  flex-shrink: 0;
}
.account-meta h2 {
  font-family: var(--font-display); color: #fff;
  font-size: 1.5rem; margin-bottom: 4px; text-transform: uppercase;
}
.account-meta .account-email { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 8px; }
.account-balance-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.account-balance-badge {
  font-family: var(--font-display); font-size: 0.9rem;
  color: var(--accent); background: rgba(0,255,133,0.08);
  padding: 5px 14px; border-radius: 6px; border: 1px solid rgba(0,255,133,0.15);
}

/* Account Tabs */
.account-tabs {
  display: flex; border-bottom: 2px solid rgba(255,255,255,0.06);
  margin-bottom: 2rem; gap: 0;
}
.account-tab {
  padding: 14px 28px; background: none; border: none;
  color: var(--text-secondary); font-family: var(--font-body);
  font-size: 0.95rem; font-weight: 500; cursor: pointer;
  transition: var(--transition); border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.account-tab:hover { color: var(--text-primary); }
.account-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.account-panel { display: none; }
.account-panel.active { display: block; }

/* Account Info Card */
.info-card {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 1.5rem;
}
.info-card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.2rem; padding-bottom: 0.8rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.info-card-header h3 { font-size: 0.95rem; color: var(--text-primary); }
.info-card-header button {
  background: none; border: none; color: var(--accent);
  font-size: 0.85rem; cursor: pointer; transition: var(--transition);
}
.info-card-header button:hover { text-shadow: 0 0 8px var(--accent-glow); }
.info-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.9rem;
}
.info-row:last-child { border-bottom: none; }
.info-row .label { color: var(--text-secondary); text-transform: uppercase; font-size: 0.78rem; letter-spacing: .5px; }
.info-row .value { color: var(--text-primary); }

/* Stats Grid */
.stats-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}
.stat-card {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 1.5rem; text-align: center;
}
.stat-card .stat-value {
  font-family: var(--font-display); font-size: 1.8rem;
  font-weight: 700; margin-bottom: 4px;
}
.stat-card .stat-value.green { color: var(--accent); }
.stat-card .stat-value.blue { color: var(--accent-blue); }
.stat-card .stat-value.yellow { color: var(--warning); }
.stat-card .stat-value.white { color: #fff; }
.stat-card .stat-label { font-size: 0.78rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .5px; }
.account-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

/* ===== TOP-UP PAGE ===== */
.topup-container { max-width: 600px; margin: 0 auto; }
.topup-card-select {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.5rem;
}
.topup-card-option {
  background: var(--bg-card); border: 2px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); padding: 1.2rem; text-align: center;
  cursor: pointer; transition: var(--transition);
}
.topup-card-option:hover { border-color: rgba(0,255,133,0.3); }
.topup-card-option.selected { border-color: var(--accent); box-shadow: 0 0 20px var(--accent-glow); }
.topup-card-option .card-icon { font-size: 2rem; margin-bottom: 6px; }
.topup-card-option .card-label { font-weight: 600; color: #fff; font-size: 0.95rem; }
.topup-form-box {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 1.5rem;
}
.topup-form-box .form-group { margin-bottom: 1rem; }
.topup-form-box .form-group label { display: block; font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .5px; }
.topup-form-box .form-group input, .topup-form-box .form-group select {
  width: 100%; padding: 12px 14px; background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.95rem; outline: none;
  font-family: var(--font-body); transition: var(--transition);
}
.topup-form-box .form-group input:focus, .topup-form-box .form-group select:focus { border-color: var(--accent); }
.topup-history { margin-top: 2rem; }
.topup-history-item {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-sm); padding: 12px 16px;
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.5rem; font-size: 0.88rem; flex-wrap: wrap; gap: 8px;
}
.topup-history-item .topup-amount { color: var(--accent); font-weight: 700; font-family: var(--font-display); }
.topup-history-item .topup-status { padding: 2px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.topup-history-item .topup-status.success { background: rgba(0,255,133,0.12); color: var(--accent); }
.topup-history-item .topup-status.pending { background: rgba(255,184,0,0.12); color: var(--warning); }
.topup-history-item .topup-status.failed { background: rgba(255,76,106,0.12); color: var(--danger); }

/* ===== SECURITY TAB ===== */
.security-form { max-width: 400px; }
.security-form .form-group { margin-bottom: 1rem; }
.security-form .form-group label { display: block; font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 5px; text-transform: uppercase; }
.security-form .form-group input {
  width: 100%; padding: 12px 14px; background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.95rem; outline: none;
  font-family: var(--font-body); transition: var(--transition);
}
.security-form .form-group input:focus { border-color: var(--accent); }

/* ===== PRODUCT DETAIL PAGE ===== */
.detail-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem;
  align-items: start;
}
.detail-gallery { position: relative; }
.detail-main-img {
  width: 100%; border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  object-fit: cover; max-height: 450px;
  background: var(--bg-card);
}
.detail-thumbs {
  display: flex; gap: 8px; margin-top: 10px;
}
.detail-thumb {
  width: 70px; height: 50px; border-radius: 6px;
  object-fit: cover; cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition); opacity: 0.6;
}
.detail-thumb:hover, .detail-thumb.active {
  border-color: var(--accent); opacity: 1;
}
.detail-info { display: flex; flex-direction: column; gap: 1rem; }
.detail-category {
  font-size: 0.78rem; text-transform: uppercase;
  color: var(--accent); font-weight: 600; letter-spacing: 1px;
}
.detail-info h1 {
  font-family: var(--font-display); font-size: 1.8rem;
  color: #fff; font-weight: 800; line-height: 1.3;
}
.detail-stats {
  display: flex; gap: 1.5rem; flex-wrap: wrap;
}
.detail-stat {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm); padding: 12px 20px;
  flex: 1; min-width: 120px;
}
.detail-stat .stat-label {
  font-size: 0.72rem; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: .5px; margin-bottom: 2px;
}
.detail-stat .stat-val {
  font-family: var(--font-display); font-size: 1.1rem;
  font-weight: 700;
}
.detail-stat .stat-val.green { color: var(--accent); }
.detail-stat .stat-val.blue { color: var(--accent-blue); }
.detail-price-section {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius); padding: 1.2rem 1.5rem;
}
.detail-price-label {
  font-size: 0.78rem; color: var(--text-secondary);
  text-transform: uppercase; margin-bottom: 4px;
}
.detail-price {
  font-family: var(--font-display); font-size: 2.2rem;
  font-weight: 900; color: var(--accent);
  text-shadow: 0 0 12px var(--accent-glow);
}
.detail-price-sub { font-size: 0.82rem; color: var(--text-secondary); margin-top: 2px; }
.detail-qty-row {
  display: flex; gap: 1rem; align-items: stretch; flex-wrap: wrap;
}
.detail-qty-box {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); padding: 10px;
  display: flex; align-items: center; gap: 0;
}
.qty-btn {
  width: 36px; height: 36px; background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1); color: var(--text-primary);
  font-size: 1.2rem; cursor: pointer; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.qty-btn:hover { border-color: var(--accent); color: var(--accent); }
.qty-input {
  width: 50px; text-align: center; background: transparent;
  border: none; color: #fff; font-size: 1.1rem; font-weight: 700;
  font-family: var(--font-display); outline: none;
}
.detail-total-box {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); padding: 10px 16px;
  display: flex; align-items: center; gap: 1.5rem; flex: 1;
}
.detail-total-box .t-label { font-size: 0.78rem; color: var(--text-secondary); text-transform: uppercase; }
.detail-total-box .t-value { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.detail-buy-btn {
  width: 100%; padding: 16px; font-size: 1.1rem; font-weight: 800;
  background: var(--accent); color: #0D0D0D; border: none;
  border-radius: var(--radius-sm); cursor: pointer;
  font-family: var(--font-body); text-transform: uppercase;
  letter-spacing: 1px; transition: var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.detail-buy-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 0 30px var(--accent-glow-strong);
}
/* Detail Tabs */
.detail-tabs {
  display: flex; border-bottom: 2px solid rgba(255,255,255,0.06);
  margin-top: 2.5rem; gap: 0; grid-column: 1 / -1;
}
.detail-tab {
  padding: 12px 24px; background: none; border: none;
  color: var(--text-secondary); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
}
.detail-tab:hover { color: var(--text-primary); }
.detail-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.detail-tab-content { grid-column: 1 / -1; padding: 1.5rem 0; }
.detail-tab-panel { display: none; color: var(--text-secondary); line-height: 1.8; }
.detail-tab-panel.active { display: block; }
.detail-tab-panel h3 { color: var(--accent); font-size: 0.95rem; margin-bottom: 0.8rem; font-family: var(--font-display); }
.detail-tab-panel p { margin-bottom: 0.8rem; }
.detail-notice {
  background: rgba(255,184,0,0.08); border: 1px solid rgba(255,184,0,0.2);
  border-radius: var(--radius-sm); padding: 12px 16px;
  font-size: 0.88rem; color: var(--warning); margin-top: 0.5rem;
}
.detail-notice strong { color: var(--warning); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.5s ease forwards; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header { padding: 0 1rem; }
  .hamburger { display: flex; }
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(13,13,13,0.97);
    padding: 1rem 2rem; gap: 0.5rem;
    border-bottom: 1px solid rgba(0,255,133,0.1);
    backdrop-filter: blur(20px);
  }
  .nav-links.show { display: flex; }
  .nav-links a { padding: 0.8rem 0; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero { height: 55vh; min-height: 300px; }
  .section { padding: 2.5rem 1rem; }
  .products-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .purchased-item { flex-direction: column; align-items: flex-start; }
  .top-bar { flex-direction: column; gap: 0.5rem; align-items: center; }
  .admin-content { padding: 1rem; }
  .admin-tabs { flex-wrap: wrap; }
  .nav-user-info { display: none; }
  .account-header { flex-direction: column; text-align: center; }
  .account-two-col { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .account-tabs { flex-wrap: wrap; }
  .account-tab { padding: 10px 16px; font-size: 0.85rem; }
  .topup-card-select { grid-template-columns: 1fr; }
  .detail-layout { grid-template-columns: 1fr; }
  .detail-info h1 { font-size: 1.4rem; }
  .detail-price { font-size: 1.6rem; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}