:root {
  --bg-gradient: linear-gradient(135deg, #0b0f19 0%, #161b2e 100%);
  --primary-color: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.3);
  --secondary-color: #a855f7;
  --success-color: #10b981;
  --danger-color: #ef4444;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-bg-hover: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-focus: rgba(99, 102, 241, 0.4);
  
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 16px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-placeholder {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 0 10px var(--primary-glow);
}

.user-details {
  display: flex;
  flex-direction: column;
}

.username {
  font-weight: 600;
  font-size: 0.95rem;
}

.user-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.wallet-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 8px 14px;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: var(--transition);
}

.wallet-badge:hover {
  background: var(--glass-bg-hover);
  border-color: var(--primary-color);
}

.wallet-badge i {
  color: var(--success-color);
}

.wallet-amount {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--success-color);
}

/* Navigation Tabs */
.nav-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--glass-border);
  background: rgba(11, 15, 25, 0.4);
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 14px 0;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
  position: relative;
}

.tab-btn i {
  font-size: 1.1rem;
}

.tab-btn.active {
  color: var(--primary-color);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  right: 20%;
  height: 3px;
  background: var(--primary-color);
  border-radius: 3px 3px 0 0;
  box-shadow: 0 -2px 10px var(--primary-glow);
}

/* Content Area */
.main-content {
  flex: 1;
  padding: 16px;
  position: relative;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Categories Scroll */
.categories-container {
  margin: -4px -16px 16px -16px;
  overflow-x: auto;
  padding: 4px 16px;
  scrollbar-width: none;
}

.categories-container::-webkit-scrollbar {
  display: none;
}

.categories-scroll {
  display: flex;
  gap: 8px;
  white-space: nowrap;
}

.category-pill {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-family: inherit;
  font-weight: 500;
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: var(--transition);
}

.category-pill:hover {
  background: var(--glass-bg-hover);
}

.category-pill.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-primary);
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (max-width: 360px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--border-radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0) 100%);
}

.product-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--glass-bg-hover);
  box-shadow: var(--shadow-md);
}

.product-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stock-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 12px;
}

.stock-badge.in-stock {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.stock-badge.out-of-stock {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger-color);
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-color);
}

/* Buttons */
.btn {
  border: none;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 16px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--text-primary);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--primary-glow);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn:disabled {
  background: var(--glass-bg);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
  border: 1px solid var(--glass-border);
}

/* Loading & Empty State */
.loading-spinner {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  gap: 12px;
  color: var(--text-secondary);
}

.loading-spinner i {
  font-size: 1.8rem;
  color: var(--primary-color);
}

.empty-msg {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Deposit Screen */
.deposit-card h2 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.deposit-card h2 i {
  color: var(--primary-color);
}

.subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.payment-details-box {
  background: rgba(11, 15, 25, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 16px;
  margin-bottom: 20px;
}

.payment-details-box h3 {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.payment-details-box pre {
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  margin-bottom: 12px;
}

.deposit-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-prefix-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix {
  position: absolute;
  left: 14px;
  color: var(--text-secondary);
  font-weight: 600;
}

.input-prefix-wrapper input {
  padding-left: 28px;
}

input[type="number"], input[type="text"] {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

input[type="number"]:focus, input[type="text"]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px var(--primary-glow);
}

/* File upload styling */
.file-upload-wrapper {
  position: relative;
  width: 100%;
}

.file-upload-wrapper input[type="file"] {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  z-index: 2;
}

.upload-trigger {
  border: 2px dashed var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.upload-trigger i {
  font-size: 1.5rem;
  color: var(--text-secondary);
}

.upload-trigger span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.upload-trigger small {
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: break-all;
}

.file-upload-wrapper:hover .upload-trigger {
  border-color: var(--primary-color);
  background: rgba(99, 102, 241, 0.02);
}

/* History List */
.purchases-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.purchase-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: var(--transition);
}

.purchase-item:hover {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--glass-border-focus);
}

.purchase-details h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.purchase-details span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.purchase-price {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 100;
  align-items: flex-end;
}

.modal.active {
  display: flex;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.modal-content {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
  border-bottom: none;
  animation: none;
  padding: 24px 20px;
  background: #0f1322;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
}

.close-btn {
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
}

.close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  margin-bottom: 24px;
}

.product-price-tag {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.product-stock-tag {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.product-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  gap: 12px;
}

.modal-footer .btn {
  flex: 1;
}

/* Success Modal & Delivery */
.success-modal {
  text-align: center;
}

.success-modal h2 {
  justify-content: center;
  gap: 10px;
  font-size: 1.25rem;
}

.text-success {
  color: var(--success-color);
}

.delivery-box {
  margin: 18px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.delivery-box textarea {
  width: 100%;
  height: 100px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 12px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  color: var(--text-primary);
  resize: none;
  outline: none;
}

.warning-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Payment Methods Tab Selection */
.deposit-methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 20px;
}

.method-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-family: inherit;
  font-weight: 500;
  font-size: 0.85rem;
  padding: 10px 0;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.method-btn:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.method-btn.active {
  background: var(--primary-color);
  color: var(--text-primary);
  border-color: transparent;
  box-shadow: 0 4px 10px var(--primary-glow);
}

.method-pane {
  display: none;
}

.method-pane.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

/* Bakong QR Code View */
.bakong-qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 10px 0;
}

.qr-box {
  background: #ffffff;
  padding: 12px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 220px;
  height: 220px;
}

.qr-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-instruction {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
  max-width: 280px;
}

.payment-status-wrapper {
  margin-bottom: 20px;
  width: 100%;
}

.bg-transparent {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

#bakong-status-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}