/* Modern Design Tokens */
:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --surface: rgba(22, 30, 49, 0.75);
  --surface-hover: rgba(30, 41, 67, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.4);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.2);
  
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.2);
  
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.2);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Reset & Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  overflow-x: hidden;
  height: 100vh;
  height: -webkit-fill-available;
  display: flex;
  flex-direction: column;
}

html {
  height: 100vh;
  height: -webkit-fill-available;
}

/* Background Glow Effects */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
}
.bg-glow-1 {
  width: 300px;
  height: 300px;
  background-color: var(--primary);
  top: -50px;
  right: -50px;
}
.bg-glow-2 {
  width: 250px;
  height: 250px;
  background-color: var(--accent);
  bottom: -50px;
  left: -50px;
}

/* App Structure */
#app {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.view {
  display: none;
  flex: 1;
  flex-direction: column;
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.view.active {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

/* Header Styles */
.app-header {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-title-wrapper {
  display: flex;
  flex-direction: column;
}

.header-title-wrapper h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.route-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  max-width: 180px;
}

/* Buttons */
button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: var(--font-family);
  transition: var(--transition);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  border: 1px solid var(--border-color);
}
.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.05);
}

.btn-primary {
  background: var(--primary);
  color: white;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px var(--primary-glow);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 20px var(--primary-glow);
  transform: translateY(-1px);
}
.btn-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}
.btn-primary:hover .btn-glow {
  transform: translateX(100%);
}

/* Badges */
.status-indicator {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid transparent;
}
.status-indicator::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.status-indicator.online {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  border-color: rgba(16, 185, 129, 0.2);
}
.status-indicator.online::before {
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.status-indicator.offline {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}
.status-indicator.offline::before {
  background-color: var(--danger);
  box-shadow: 0 0 8px var(--danger);
}

.user-badge {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.2);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-primary);
  animation: pulse 1.5s infinite;
}

/* Content Area Layout */
.content-area {
  flex: 1;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-title h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.page-title p {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 3px;
}

/* Form inputs & bars */
.controls-bar {
  display: flex;
  gap: 10px;
  width: 100%;
}
.controls-bar input, .controls-bar select {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  outline: none;
  font-family: var(--font-family);
  transition: var(--transition);
}
.controls-bar input {
  flex: 1;
}
.controls-bar input:focus, .controls-bar select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

/* 1. LOGIN SCREEN DETAILS */
#view-login {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#view-login.active {
  display: flex;
}
.login-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.login-header {
  text-align: center;
}
.logo-box {
  font-size: 44px;
  margin-bottom: 15px;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}
.login-header h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.login-header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 5px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}
.form-group label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}
.error-msg {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.4;
  margin-bottom: 10px;
}
.login-card form button {
  width: 100%;
}

/* 2. DASHBOARD / GRID LIST */
.grid-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 10px;
}
@media (min-width: 640px) {
  .grid-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .grid-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.manifest-card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.manifest-card:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.2);
}

.manifest-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.manifest-card-header h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.3px;
}
.manifest-status {
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}
.manifest-status.pending {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}
.manifest-status.in-progress {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
}
.manifest-status.completed {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
}

.manifest-info-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}
.manifest-info-row span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.manifest-progress-wrapper {
  margin-top: 5px;
}
.progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 5px;
  font-weight: 500;
}
.progress-bar-bg {
  background: rgba(255, 255, 255, 0.05);
  height: 6px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0%;
  border-radius: 10px;
  transition: width 0.4s ease;
}

/* Spinner and Empty States */
.spinner-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
  padding: 60px 20px;
  color: var(--text-secondary);
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255,255,255,0.05);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}
.empty-state {
  text-align: center;
  padding: 50px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.empty-icon {
  font-size: 48px;
  opacity: 0.5;
}
.empty-state h3 {
  font-size: 16px;
  color: var(--text-primary);
}
.empty-state p {
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 280px;
  margin: 0 auto;
}

/* 3. SLIDING TAB VIEW INTERFACE */
.tabs-container {
  display: flex;
  background: rgba(15, 23, 42, 0.4);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  flex-shrink: 0;
}
.tab-btn {
  flex: 1;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 14px 10px;
  text-align: center;
  position: relative;
  z-index: 2;
  transition: color 0.3s;
}
.tab-btn.active {
  color: var(--text-primary);
}
.tab-badge {
  background: rgba(255,255,255,0.1);
  color: var(--text-secondary);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  margin-left: 4px;
}
.tab-btn.active .tab-badge {
  background: var(--primary);
  color: white;
}
.tab-slider {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 50%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  z-index: 3;
}

.picking-area {
  padding: 16px 14px;
  overflow-y: auto;
}
.tab-pane {
  display: none;
  flex-direction: column;
  gap: 20px;
}
.tab-pane.active {
  display: flex;
}

/* Category Sorting Grouping */
.category-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.category-header {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  letter-spacing: 1px;
  border-bottom: 1px solid rgba(99, 102, 241, 0.15);
  padding-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.category-count {
  font-size: 10px;
  color: var(--text-muted);
}

/* Product Cards */
.product-card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: transform 0.2s, border-color 0.2s;
  position: relative;
}
.product-card:hover {
  background: var(--surface-hover);
}

/* Image Container */
.product-img-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
  cursor: zoom-in;
}
.product-img-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.img-fallback {
  font-size: 20px;
  opacity: 0.6;
}

/* Product details */
.product-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0; /* allows text truncation */
}
.product-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: normal;
  word-break: break-word;
}
.qty-req {
  font-size: 11px;
  color: var(--text-secondary);
}

/* Quantity Adjustments (+ and -) */
.qty-adjuster {
  display: flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.qty-btn {
  width: 38px;
  height: 38px;
  background: transparent;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.qty-btn:active {
  background: rgba(255, 255, 255, 0.08);
}
.qty-input-wrapper {
  width: 44px;
  text-align: center;
}
.qty-input-wrapper input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  outline: none;
  font-family: var(--font-family);
  -moz-appearance: textfield;
}
.qty-input-wrapper input::-webkit-outer-spin-button,
.qty-input-wrapper input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Checkbox and Pick Status Styles */
.pick-checkbox-wrapper {
  padding-left: 4px;
}
.pick-checkbox {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}
.pick-checkbox::after {
  content: "✓";
  color: transparent;
  font-size: 14px;
  font-weight: 700;
  transition: color 0.15s;
}
.product-card.picked .pick-checkbox {
  background: var(--accent);
  border-color: var(--accent);
}
.product-card.picked .pick-checkbox::after {
  color: #090d16;
}

/* Over/Under picking highlights */
.product-card.over-picked {
  border-color: rgba(16, 185, 129, 0.25);
  box-shadow: inset 0 0 8px rgba(16, 185, 129, 0.05);
}
.product-card.under-picked {
  border-color: rgba(245, 158, 11, 0.25);
  box-shadow: inset 0 0 8px rgba(245, 158, 11, 0.05);
}

/* 4. MODALS */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 2000;
  animation: fadeIn 0.25s ease;
}
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: zoomIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h3 {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  max-width: 80%;
}
.close-btn {
  background: transparent;
  color: var(--text-secondary);
  font-size: 24px;
  line-height: 1;
}
.close-btn:hover {
  color: var(--text-primary);
}
.modal-body {
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.5);
  min-height: 280px;
}
.modal-body img {
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Slide Transitions for tab panes */
.tab-pane {
  animation: fadeIn 0.25s ease;
}

/* Responsive spacing enhancements */
.search-products-bar {
  margin-bottom: 15px;
}

/* Stage selector modal and cards */
.action-selector-card {
  max-width: 440px;
}
.action-options-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}
.action-option-box {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
}
.action-option-box:hover {
  background: var(--surface-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.option-icon {
  font-size: 36px;
}
.action-option-box h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}
.action-option-box p {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Stage 2 Summary Bar */
.stage-summary-bar {
  background: rgba(245, 158, 11, 0.1);
  border-bottom: 1px solid rgba(245, 158, 11, 0.2);
  padding: 10px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--warning);
}
.badge-accent {
  background: var(--warning);
  color: #090d16;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
}

/* Variance indicator tags */
.variance-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}
.variance-tag.exact {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
}
.variance-tag.short {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}
.variance-tag.over {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

/* Final Verification Button in card */
.btn-verify {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.btn-verify.verified {
  background: var(--accent);
  color: #090d16;
  border-color: var(--accent);
}