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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #0a0e17;
  color: #e0e0e0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: #7eb8ff;
  text-decoration: none;
}

a:hover {
  color: #a8d4ff;
}

/* Navbar */
.navbar {
  background: rgba(15, 20, 35, 0.95);
  border-bottom: 1px solid #1a2440;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #c8a864;
  letter-spacing: 1px;
}

.nav-logo:hover {
  color: #e0c47a;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: #b0b8cc;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

.nav-user {
  color: #c8a864;
  font-weight: 600;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px;
  flex: 1;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, #0f1423 0%, #1a2040 50%, #0f1423 100%);
  border-radius: 12px;
  margin-bottom: 40px;
  border: 1px solid #1a2440;
}

.hero h1 {
  font-size: 3rem;
  color: #c8a864;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero p {
  font-size: 1.2rem;
  color: #8890a8;
  margin-bottom: 30px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-primary {
  background: #c8a864;
  color: #0a0e17;
}

.btn-primary:hover {
  background: #e0c47a;
  color: #0a0e17;
}

.btn-danger {
  background: #cc4444;
  color: #fff;
}

.btn-danger:hover {
  background: #dd5555;
}

.btn-small {
  padding: 4px 12px;
  font-size: 0.8rem;
}

.btn-large {
  padding: 14px 36px;
  font-size: 1.1rem;
}

/* Forms */
.form-container {
  max-width: 420px;
  margin: 40px auto;
  background: #111827;
  padding: 36px;
  border-radius: 12px;
  border: 1px solid #1a2440;
}

.form-container h2 {
  text-align: center;
  color: #c8a864;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  color: #8890a8;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  background: #0a0e17;
  border: 1px solid #2a3050;
  border-radius: 6px;
  color: #e0e0e0;
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #c8a864;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group {
  flex: 1;
}

.form-footer {
  text-align: center;
  margin-top: 16px;
  color: #8890a8;
  font-size: 0.9rem;
}

.error-message {
  background: rgba(204, 68, 68, 0.15);
  border: 1px solid #cc4444;
  color: #ff8888;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: #111827;
  border: 1px solid #1a2440;
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: #c8a864;
}

.product-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: #0f1423;
}

.product-card .card-body {
  padding: 16px;
}

.product-card h3 {
  color: #e0e0e0;
  margin-bottom: 8px;
}

.product-card .price {
  color: #c8a864;
  font-size: 1.2rem;
  font-weight: 700;
}

.product-card .description {
  color: #8890a8;
  font-size: 0.9rem;
  margin-top: 8px;
}

/* Product Detail */
.product-detail {
  display: flex;
  gap: 40px;
  background: #111827;
  border: 1px solid #1a2440;
  border-radius: 12px;
  padding: 30px;
}

.product-detail img {
  width: 400px;
  height: 400px;
  object-fit: cover;
  border-radius: 8px;
  background: #0f1423;
}

.product-detail .detail-info {
  flex: 1;
}

.product-detail h2 {
  color: #e0e0e0;
  margin-bottom: 12px;
  font-size: 1.8rem;
}

.product-detail .price {
  color: #c8a864;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.product-detail .description {
  color: #8890a8;
  line-height: 1.6;
  margin-bottom: 24px;
}

.quantity-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.quantity-selector label {
  color: #8890a8;
}

.quantity-selector input {
  width: 80px;
  padding: 8px 12px;
  background: #0a0e17;
  border: 1px solid #2a3050;
  border-radius: 6px;
  color: #e0e0e0;
  text-align: center;
  font-size: 1rem;
}

/* Checkout */
.checkout-container {
  max-width: 600px;
  margin: 30px auto;
  background: #111827;
  border: 1px solid #1a2440;
  border-radius: 12px;
  padding: 30px;
}

.checkout-container h2 {
  color: #c8a864;
  margin-bottom: 20px;
}

.order-summary {
  background: #0a0e17;
  border: 1px solid #1a2440;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 24px;
}

.order-summary .row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #1a2440;
}

.order-summary .row:last-child {
  border-bottom: none;
  font-weight: 700;
  color: #c8a864;
  font-size: 1.1rem;
}

.payment-status {
  text-align: center;
  padding: 16px;
  border-radius: 8px;
  margin-top: 16px;
}

/* Admin */
.admin-section {
  background: #111827;
  border: 1px solid #1a2440;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.admin-section h3 {
  color: #c8a864;
  margin-bottom: 16px;
  font-size: 1.2rem;
}

.admin-form {
  margin-bottom: 16px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid #1a2440;
}

.admin-table th {
  color: #8890a8;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-table td {
  color: #e0e0e0;
  font-size: 0.9rem;
}

.admin-table tr:hover {
  background: rgba(200, 168, 100, 0.05);
}

.status-pending {
  color: #e0a030;
}

.status-waiting {
  color: #e0a030;
}

.status-completed {
  color: #44cc66;
}

.status-failed {
  color: #cc4444;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  border-left: 1px solid #2a3050;
  padding-left: 16px;
}

.lang-btn {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #6070a0 !important;
  transition: all 0.2s;
}

.lang-btn:hover {
  color: #e0e0e0 !important;
  background: rgba(200, 168, 100, 0.1);
}

.lang-btn.active {
  color: #c8a864 !important;
  background: rgba(200, 168, 100, 0.15);
}

/* Alert */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.alert-error {
  background: rgba(204, 68, 68, 0.15);
  border: 1px solid #cc4444;
  color: #ff8888;
}

.alert-warning {
  background: rgba(224, 160, 48, 0.15);
  border: 1px solid #e0a030;
  color: #f0c060;
}

/* Form Card */
.form-card {
  max-width: 420px;
  margin: 40px auto;
  background: #111827;
  padding: 36px;
  border-radius: 12px;
  border: 1px solid #1a2440;
}

.form-card h2 {
  text-align: center;
  color: #c8a864;
  margin-bottom: 24px;
}

.btn-full {
  width: 100%;
}

.btn-secondary {
  background: #2a3050;
  color: #b0b8cc;
}

.btn-secondary:hover {
  background: #3a4060;
  color: #fff;
}

/* Alert Success */
.alert-success {
  background: rgba(68, 204, 102, 0.15);
  border: 1px solid #44cc66;
  color: #66ee88;
}

/* Form Description */
.form-desc {
  text-align: center;
  color: #8890a8;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

/* Empty Message */
.empty-message {
  color: #6070a0;
  text-align: center;
  padding: 30px;
}

/* Server Status */
.server-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 20px 0;
  font-size: 1.1rem;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.online {
  background: #44cc66;
  box-shadow: 0 0 8px #44cc66;
}

.status-dot.offline {
  background: #cc4444;
  box-shadow: 0 0 8px #cc4444;
}

/* Notice Section */
.notice-section {
  background: #111827;
  border: 1px solid #1a2440;
  border-radius: 12px;
  padding: 24px;
  margin-top: 30px;
}

.notice-section h3 {
  color: #c8a864;
  margin-bottom: 16px;
}

.notice-list {
  display: flex;
  flex-direction: column;
}

.notice-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #1a2440;
}

.notice-item:last-child {
  border-bottom: none;
}

.notice-title {
  color: #e0e0e0;
}

.notice-date {
  color: #6070a0;
  font-size: 0.85rem;
}

/* Status Select */
.status-select {
  padding: 4px 8px;
  background: #0a0e17;
  border: 1px solid #2a3050;
  border-radius: 4px;
  color: #e0e0e0;
  font-size: 0.85rem;
  margin-right: 4px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 20px;
  color: #4a5068;
  border-top: 1px solid #1a2440;
  font-size: 0.85rem;
  margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .product-detail {
    flex-direction: column;
  }

  .product-detail img {
    width: 100%;
    height: 250px;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .nav-links {
    gap: 12px;
  }
}