@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 2rem !important;
}

.mode-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.mode-badge.mock {
  background-color: var(--warning-light);
  color: #b45309;
  border: 1px solid #fde68a;
}

.mode-badge.gas {
  background-color: var(--success-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* Main content wrapper */
.main-wrapper {
  display: flex;
  flex: 1;
  padding-bottom: 70px; /* Space for mobile nav */
}

/* Nav Menu (Responsive) */
nav.sidebar {
  width: 260px;
  background-color: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.nav-item:hover {
  background-color: var(--bg-main);
  color: var(--text-main);
}

.nav-item.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

/* Content Container */
main.content-area {
  flex: 1;
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.tab-content.active {
  display: block;
}

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

/* Dashboard Styles */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.stat-icon.primary { background-color: var(--primary); }
.stat-icon.warning { background-color: var(--warning); }
.stat-icon.success { background-color: var(--success); }
.stat-icon.danger { background-color: var(--danger); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-title {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

/* Card layout components */
.section-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title span.material-symbols-outlined {
  color: var(--primary);
}

/* Lists and Tables */
.item-table-container {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: var(--bg-main);
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  vertical-align: middle;
}

tr:last-child td {
  border-bottom: none;
}

.qty-badge {
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  font-weight: 700;
}

.qty-badge.normal {
  background-color: var(--primary-light);
  color: var(--primary);
}

.qty-badge.warning-stock {
  background-color: var(--warning-light);
  color: #b45309;
}

.qty-badge.out-of-stock {
  background-color: var(--danger-light);
  color: var(--danger);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-family: var(--font);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--bg-card);
  color: var(--text-main);
  transition: var(--transition);
  font-size: 0.95rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 0.95rem;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

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

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

.btn-secondary:hover {
  background-color: var(--border);
}

.btn-danger {
  background-color: var(--danger);
  color: white;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-icon {
  padding: 0.4rem;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
}

.btn-icon:hover {
  background-color: var(--bg-main);
  color: var(--text-main);
  border-color: var(--border);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  overflow: hidden;
  animation: scaleUp 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleUp {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-weight: 700;
  font-size: 1.125rem;
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* OCR Receipt Reading Tab Elements */
.upload-container {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  background-color: var(--bg-card);
  transition: var(--transition);
}

.upload-container:hover, .upload-container.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.upload-icon {
  font-size: 3rem !important;
  color: var(--primary);
  margin-bottom: 1rem;
}

/* Camera Section */
.camera-container {
  display: none;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.camera-container.active {
  display: flex;
}

.video-preview {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-md);
  background-color: black;
  transform: scaleX(-1); /* mirror effect */
}

/* OCR Review Grid */
.ocr-wizard-section {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.ocr-wizard-section.active {
  display: block;
}

.ocr-item-row {
  display: grid;
  grid-template-columns: 24px 2fr 1fr 1fr 1.5fr;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.ocr-item-row.header {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-bottom: 2px solid var(--border);
}

/* Speech Recognition indicator */
.speech-pulse {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1.5rem auto;
  animation: pulse 1.5s infinite;
}

.speech-pulse span {
  font-size: 2.5rem !important;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4); }
  70% { box-shadow: 0 0 0 20px rgba(79, 70, 229, 0); }
  100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}

.speech-text {
  text-align: center;
  font-style: italic;
  color: var(--text-muted);
  margin-top: 1rem;
  min-height: 24px;
}

/* Chart Canvas container */
.chart-box {
  position: relative;
  height: 300px;
  width: 100%;
  margin-top: 1rem;
}

/* Toggle Switch */
.switch-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
}

.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Responsive CSS */
@media (min-width: 769px) {
  .mobile-bottom-nav {
    display: none;
  }
}

@media (max-width: 768px) {
  .main-wrapper {
    flex-direction: column;
  }
  
  nav.sidebar {
    display: none; /* Hide sidebar on mobile */
  }
  
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border);
    z-index: 100;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.05);
  }
  
  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    gap: 0.15rem;
    flex: 1;
    text-align: center;
  }
  
  .mobile-nav-item span {
    font-size: 1.5rem !important;
  }
  
  .mobile-nav-item.active {
    color: var(--primary);
    font-weight: 600;
  }
  
  main.content-area {
    padding: 1rem;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .ocr-item-row {
    grid-template-columns: 24px 2fr 1fr;
  }
  
  .ocr-item-row.desktop-only,
  .ocr-item-cell.desktop-only {
    display: none;
  }
  
  .ocr-item-row.header {
    display: none;
  }
}