/* style.css - Clean & Professional Redesign */

:root {
  /* Primary Brand Colors */
  --primary: #8B5FBF;       /* Elegant purple */
  --primary-light: #A984E5; /* Lighter purple */
  --primary-dark: #6D3FA0;  /* Darker purple */
  
  /* Secondary Colors */
  --secondary: #FF9A8B;     /* Soft coral */
  --success: #5FD9A5;       /* Mint green */
  --warning: #FFD166;       /* Soft yellow */
  --danger: #FF6B8B;        /* Pink coral */
  --info: #4CC9F0;          /* Sky blue */
  
  /* Neutral Colors */
  --light: #F8F9FA;
  --dark: #2D3047;
  --gray-100: #F8F9FA;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-400: #CED4DA;
  --gray-500: #ADB5BD;
  --gray-600: #6C757D;
  --gray-700: #495057;
  --gray-800: #343A40;
  --gray-900: #212529;
  
  /* UI Elements */
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --box-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 280px;
}

/* Dark Mode Variables */
body.dark-mode {
  --light: #1A1D29;
  --dark: #F8F9FA;
  --gray-100: #2D3047;
  --gray-200: #3A3D5A;
  --gray-300: #474A6D;
  --gray-400: #555880;
  --gray-500: #6C7293;
  --gray-600: #8F93B8;
  --gray-700: #B4B8E0;
  --gray-800: #D9DCF5;
  --gray-900: #F0F1FF;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #f8f9fa 100%);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
  transition: var(--transition);
}

body.dark-mode {
  background: linear-gradient(135deg, #1A1D29 0%, #2D3047 100%);
  color: var(--gray-200);
}

/* Loading Screen */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  backdrop-filter: blur(10px);
}

body.dark-mode .loading {
  background: rgba(26, 29, 41, 0.95);
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

.loading p {
  color: var(--primary);
  font-size: 16px;
  font-weight: 500;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Layout */
.container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */
.navigation {
  width: var(--sidebar-width);
  background: white;
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

body.dark-mode .navigation {
  background: var(--gray-100);
  border-right-color: var(--gray-200);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px;
  border-bottom: 1px solid var(--gray-200);
  text-decoration: none;
}

.navbar-brand i {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.navbar-brand span {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: -0.5px;
}

body.dark-mode .navbar-brand span {
  color: var(--dark);
}

.nav-links {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--gray-700);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
  font-weight: 500;
  font-size: 15px;
  border: none;
  background: transparent;
  cursor: pointer;
}

body.dark-mode .nav-link {
  color: var(--gray-300);
}

.nav-link i {
  font-size: 18px;
  width: 24px;
  text-align: center;
  color: var(--gray-500);
}

.nav-link:hover {
  background: var(--gray-100);
  color: var(--primary);
  transform: translateX(4px);
}

.nav-link:hover i {
  color: var(--primary);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: var(--box-shadow);
}

.nav-link.active i {
  color: white;
}

.nav-link.active:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.header-controls {
  padding: 20px;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-100);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

body.dark-mode .header-controls {
  background: var(--gray-200);
  border-top-color: var(--gray-300);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: white;
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  color: var(--gray-700);
  box-shadow: var(--box-shadow);
}

body.dark-mode .user-info {
  background: var(--gray-200);
  color: var(--gray-300);
}

.user-info i {
  color: var(--primary);
}

.logout-btn,
.mode-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  background: white;
  color: var(--gray-700);
  box-shadow: var(--box-shadow);
}

body.dark-mode .logout-btn,
body.dark-mode .mode-toggle {
  background: var(--gray-200);
  color: var(--gray-300);
}

.logout-btn:hover {
  background: var(--danger);
  color: white;
  transform: translateY(-2px);
}

.mode-toggle:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 30px;
  background: var(--light);
  min-height: 100vh;
}

body.dark-mode .main-content {
  background: var(--light);
}

/* Message System */
.message {
  padding: 16px 20px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 24px;
  display: none;
  animation: slideIn 0.3s ease;
  border-left: 4px solid;
  box-shadow: var(--box-shadow);
}

.message.show {
  display: block;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.success {
  background: linear-gradient(135deg, rgba(95, 217, 165, 0.1), rgba(95, 217, 165, 0.05));
  border-left-color: var(--success);
  color: var(--success);
}

.message.error {
  background: linear-gradient(135deg, rgba(255, 107, 139, 0.1), rgba(255, 107, 139, 0.05));
  border-left-color: var(--danger);
  color: var(--danger);
}

.message.warning {
  background: linear-gradient(135deg, rgba(255, 209, 102, 0.1), rgba(255, 209, 102, 0.05));
  border-left-color: var(--warning);
  color: var(--warning);
}

.message.info {
  background: linear-gradient(135deg, rgba(76, 201, 240, 0.1), rgba(76, 201, 240, 0.05));
  border-left-color: var(--info);
  color: var(--info);
}

/* Sections */
.section {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 32px;
  margin-bottom: 30px;
  transition: var(--transition);
}

body.dark-mode .section {
  background: var(--gray-100);
}

.section:hover {
  box-shadow: var(--box-shadow-lg);
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.5px;
}

body.dark-mode .section-title {
  color: var(--dark);
}

.section-title i {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

/* Grid Systems */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  letter-spacing: 0.3px;
  box-shadow: var(--box-shadow);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-lg);
}

.btn:active {
  transform: translateY(0);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #4DCC95);
  color: white;
}

.btn-success:hover {
  background: linear-gradient(135deg, #4DCC95, var(--success));
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #FF8BA3);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning), #FFE082);
  color: #333;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--gray-400), var(--gray-500));
  color: white;
}

.btn-info {
  background: linear-gradient(135deg, var(--info), #6DD4F7);
  color: white;
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.input-with-label {
  position: relative;
}

.input-with-label input,
.input-with-label select,
.input-with-label textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-sm);
  font-size: 15px;
  background: white;
  color: var(--gray-800);
  transition: var(--transition);
  font-family: inherit;
}

body.dark-mode .input-with-label input,
body.dark-mode .input-with-label select,
body.dark-mode .input-with-label textarea {
  background: var(--gray-200);
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.input-with-label label {
  position: absolute;
  top: -10px;
  left: 12px;
  background: white;
  padding: 0 8px;
  font-size: 13px;
  color: var(--gray-600);
  font-weight: 500;
  pointer-events: none;
  transition: var(--transition);
}

body.dark-mode .input-with-label label {
  background: var(--gray-100);
  color: var(--gray-400);
}

.input-with-label input:focus,
.input-with-label select:focus,
.input-with-label textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 95, 191, 0.1);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--box-shadow);
  margin-top: 20px;
  border: 1px solid var(--gray-200);
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: white;
}

body.dark-mode table {
  background: var(--gray-100);
}

th {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 16px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--gray-200);
}

body.dark-mode th {
  background: var(--gray-200);
  color: var(--gray-300);
  border-bottom-color: var(--gray-300);
}

td {
  padding: 16px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-700);
  font-size: 15px;
}

body.dark-mode td {
  border-bottom-color: var(--gray-300);
  color: var(--gray-300);
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--gray-100);
}

body.dark-mode tbody tr:hover {
  background: var(--gray-200);
}

/* Search Box */
.search-box {
  display: flex;
  position: relative;
  margin-bottom: 24px;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-sm);
  font-size: 15px;
  background: white;
  color: var(--gray-800);
  transition: var(--transition);
}

body.dark-mode .search-box input {
  background: var(--gray-200);
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.search-box i {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-500);
  font-size: 18px;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 95, 191, 0.1);
}

/* Product Cards */
.product-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 24px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

body.dark-mode .product-card {
  background: var(--gray-100);
  border-color: var(--gray-300);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
  border-color: var(--primary-light);
}

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

.product-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
}

body.dark-mode .product-name {
  color: var(--dark);
}

.product-serial {
  font-size: 13px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 500;
}

.product-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.product-detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--gray-100);
  border-radius: var(--border-radius-sm);
}

body.dark-mode .product-detail-item {
  background: var(--gray-200);
}

.product-detail-label {
  color: var(--gray-600);
  font-size: 13px;
  font-weight: 500;
}

.product-detail-value {
  font-weight: 600;
  color: var(--dark);
}

body.dark-mode .product-detail-value {
  color: var(--dark);
}

.product-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* Barcode Container */
.barcode-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px;
  border: 2px dashed var(--gray-300);
  border-radius: var(--border-radius);
  margin-top: 24px;
  background: var(--gray-100);
  min-height: 300px;
  justify-content: center;
  transition: var(--transition);
}

body.dark-mode .barcode-container {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

.barcode-container:hover {
  border-color: var(--primary);
}

.barcode-placeholder {
  text-align: center;
  color: var(--gray-500);
  padding: 20px;
}

.barcode-placeholder i {
  font-size: 64px;
  margin-bottom: 16px;
  color: var(--gray-400);
  opacity: 0.7;
}

#barcode {
  max-width: 100%;
  height: auto;
  margin: 20px 0;
  background: white;
  padding: 20px;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--box-shadow);
}

body.dark-mode #barcode {
  background: var(--gray-200);
}

.barcode-details {
  width: 100%;
  margin-top: 24px;
  background: white;
  padding: 24px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

body.dark-mode .barcode-details {
  background: var(--gray-200);
}

.barcode-details p {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-200);
  margin: 0;
  font-size: 15px;
}

.barcode-details p:last-child {
  border-bottom: none;
}

.barcode-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  width: 100%;
}

.barcode-actions button {
  flex: 1;
}

/* Scanner Section */
.scanner-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.scanner-container {
  position: relative;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  padding: 24px;
  min-height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--gray-300);
  transition: var(--transition);
  margin-bottom: 24px;
}

body.dark-mode .scanner-container {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

.scanner-container.scanner-active {
  border-color: var(--success);
  border-style: solid;
  box-shadow: 0 0 0 3px rgba(95, 217, 165, 0.1);
}

.scanner-placeholder {
  text-align: center;
  color: var(--gray-500);
  padding: 40px;
}

.scanner-placeholder i {
  font-size: 64px;
  margin-bottom: 20px;
  color: var(--primary-light);
  opacity: 0.8;
}

.scanner-status {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--success);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 10;
  box-shadow: var(--box-shadow);
}

.scanner-status i {
  animation: spin 1s linear infinite;
}

/* Login Page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-box {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-xl);
  padding: 48px;
  width: 100%;
  max-width: 440px;
  text-align: center;
  animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

body.dark-mode .login-box {
  background: var(--gray-100);
}

.login-logo {
  font-size: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.login-box h2 {
  color: var(--dark);
  margin-bottom: 12px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.login-box p {
  color: var(--gray-600);
  margin-bottom: 32px;
  font-size: 16px;
  line-height: 1.5;
}

body.dark-mode .login-box h2 {
  color: var(--dark);
}

body.dark-mode .login-box p {
  color: var(--gray-400);
}

.sweet-types {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.sweet-tag {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--box-shadow);
}

/* Footer */
footer {
  text-align: center;
  padding: 32px 0;
  margin-top: 48px;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-600);
  font-size: 14px;
}

body.dark-mode footer {
  border-top-color: var(--gray-300);
  color: var(--gray-400);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
  backdrop-filter: blur(5px);
}

.modal-content {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlideIn 0.3s ease;
}

body.dark-mode .modal-content {
  background: var(--gray-100);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  border-bottom: 1px solid var(--gray-200);
}

.modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

body.dark-mode .modal-title {
  color: var(--dark);
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--gray-500);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--danger);
}

.modal-body {
  padding: 32px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 24px 32px;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-100);
  border-radius: 0 0 var(--border-radius) var(--border-radius);
}

body.dark-mode .modal-footer {
  background: var(--gray-200);
  border-top-color: var(--gray-300);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .navigation {
    width: 240px;
  }
  
  .main-content {
    margin-left: 240px;
    padding: 20px;
  }
  
  .section {
    padding: 24px;
  }
  
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .navigation {
    position: fixed;
    left: -280px;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: left 0.3s ease;
  }
  
  .navigation.active {
    left: 0;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .mobile-menu-toggle {
    display: block;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .scanner-controls,
  .barcode-actions,
  .bill-actions {
    flex-direction: column;
  }
  
  .scanner-controls .btn,
  .barcode-actions .btn,
  .bill-actions .btn {
    width: 100%;
  }
}

/* Quantity Unit Input */
.quantity-unit {
  display: flex;
  gap: 0;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 2px solid var(--gray-300);
}

.quantity-unit input {
  flex: 1;
  border: none;
  border-right: 1px solid var(--gray-300);
}

.quantity-unit select {
  border: none;
  background: var(--gray-100);
  min-width: 80px;
}

body.dark-mode .quantity-unit select {
  background: var(--gray-200);
}

/* Real-time Price Display */
.realtime-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--success);
  text-align: center;
  margin-top: 20px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(95, 217, 165, 0.1), rgba(95, 217, 165, 0.05));
  border-radius: var(--border-radius);
  border: 2px solid var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* KPI Cards */
.kpi-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 24px;
  box-shadow: var(--box-shadow);
  border-top: 4px solid var(--primary);
  transition: var(--transition);
}

body.dark-mode .kpi-card {
  background: var(--gray-100);
}

.kpi-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
}

.kpi-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: white;
  font-size: 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

.kpi-content h3 {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 8px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1;
}

body.dark-mode .kpi-value {
  color: var(--dark);
}

.kpi-change {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kpi-change.positive {
  color: var(--success);
}

.kpi-change.negative {
  color: var(--danger);
}

.kpi-description {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 12px;
  line-height: 1.4;
}

/* Chart Containers */
.chart-container {
  background: white;
  border-radius: var(--border-radius);
  padding: 24px;
  box-shadow: var(--box-shadow);
  margin-bottom: 24px;
  transition: var(--transition);
}

body.dark-mode .chart-container {
  background: var(--gray-100);
}

.chart-container:hover {
  box-shadow: var(--box-shadow-lg);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.chart-header h3 {
  color: var(--dark);
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

body.dark-mode .chart-header h3 {
  color: var(--dark);
}

.chart-type-select {
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--gray-300);
  background: white;
  color: var(--gray-700);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

body.dark-mode .chart-type-select {
  background: var(--gray-200);
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.chart-wrapper {
  position: relative;
  height: 300px;
  width: 100%;
}

/* Export Options */
.export-options {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

/* Analytics Date Filter */
.analytics-input {
  padding: 8px 12px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  background: white;
  color: var(--gray-800);
  transition: var(--transition);
}

body.dark-mode .analytics-input {
  background: var(--gray-200);
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.analytics-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 95, 191, 0.1);
}

/* Compact Date Filter Section */
.analytics .section:first-child {
  padding: 20px 24px;
  margin-bottom: 16px;
}

.analytics .section:first-child .grid-3 {
  gap: 16px;
  margin-bottom: 16px;
}

.analytics .section:first-child .input-with-label {
  margin-bottom: 0;
}

.analytics .section:first-child .input-with-label input,
.analytics .section:first-child .input-with-label select {
  padding: 8px 12px;
  font-size: 14px;
}

.analytics .section:first-child .input-with-label label {
  font-size: 12px;
  top: -8px;
  padding: 0 6px;
}

.analytics .section:first-child .btn {
  padding: 8px 20px;
  font-size: 14px;
  margin-top: 12px;
}
@media print {
  .no-print,
  .navigation,
  .header-controls,
  .scanner-controls,
  .bill-actions,
  .export-options,
  footer {
    display: none !important;
  }
  
  .main-content {
    margin-left: 0;
    padding: 0;
  }
  
  .section {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  table {
    border: 1px solid #000;
  }
  
  th, td {
    border: 1px solid #000;
  }
}