:root {
  /* YTC Brand Colors - 53rd Anniversary */
  --primary-blue: #4A90E2;
  --primary-cyan: #00B8E6;
  --dark-blue: #3D5A8C;
  --light-cyan: #00D4FF;

  /* Light Theme - Functional Colors */
  --bg-primary: #F8FAFB;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-hover: #F0F4F8;

  --text-primary: #1A202C;
  --text-secondary: #4A5568;
  --text-muted: #718096;

  /* Status Colors */
  --color-available: #10B981;
  --color-reserved: #EF4444;
  --color-pending: #F59E0B;
  --color-selected: var(--primary-cyan);

  /* UI Elements */
  --border-color: rgba(74, 144, 226, 0.15);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-cyan) 100%);
  --gradient-dark: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
  --gradient-bg: linear-gradient(135deg, #F8FAFB 0%, #E6F2FF 100%);

  --border-radius: 12px;
  --transition-speed: 0.3s;

  /* Legacy compatibility */
  --bg-main: var(--bg-primary);
  --border: rgba(74, 144, 226, 0.15);
  --border-light: rgba(74, 144, 226, 0.2);
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: var(--shadow-md);

  --primary: var(--primary-blue);
  --secondary: var(--primary-cyan);
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;

  --status-available: var(--color-available);
  --status-reserved: var(--color-reserved);
  --status-pending: var(--color-pending);

  /* Zone Colors (matching floor plan) */
  --zone-a: #00BCD4;
  /* Cyan */
  --zone-b: #FF9800;
  /* Orange */
  --zone-c: #8BC34A;
  /* Green */
  --zone-d: #E91E63;
  /* Pink */
  --zone-e: #9C27B0;
  /* Purple */
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem;
}

/* Header */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Card */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

/* Floor Plan Section */
.floor-plan-section {
  margin: 2rem 0;
}

.legend {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.legend-color {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Tables Grid */
.tables-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  /* Fixed 12 columns to match layout */
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--bg-main);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
}

.table-item {
  aspect-ratio: 1;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.table-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--status-available);
  transition: all 0.3s ease;
}

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

.table-item.available {
  border-color: var(--status-available);
}

.table-item.available::before {
  background: var(--status-available);
}

.table-item.reserved {
  border-color: var(--status-reserved);
  opacity: 0.6;
  cursor: not-allowed;
}

.table-item.reserved::before {
  background: var(--status-reserved);
}

.table-item.pending {
  border-color: var(--status-pending);
  opacity: 0.7;
  cursor: not-allowed;
}

.table-item.pending::before {
  background: var(--status-pending);
}

.table-item.selected {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
  transform: scale(1.05);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.table-item.selected::before {
  background: var(--primary);
  height: 6px;
}

.table-number {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.table-info {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.2;
}

.table-price {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-top: 0.15rem;
}

/* Form */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-main);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* File Upload */
.file-upload-wrapper {
  position: relative;
  margin-top: 1rem;
}

.file-upload-input {
  display: none;
}

.file-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  background: var(--bg-main);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.file-upload-label:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
}

.file-preview {
  margin-top: 1rem;
  max-width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
}

.file-preview img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transition: width 0.6s, height 0.6s, top 0.6s, left 0.6s;
  transform: translate(-50%, -50%);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  border-color: var(--primary-cyan);
  box-shadow: 0 4px 12px rgba(0, 184, 230, 0.3);
}

.btn-primary:hover {
  background: var(--gradient-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 184, 230, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--primary-blue);
  color: var(--primary-cyan);
}

.btn-secondary:hover {
  border-color: var(--primary-cyan);
  color: var(--light-cyan);
  background: rgba(0, 184, 230, 0.1);
  box-shadow: 0 4px 12px rgba(0, 184, 230, 0.2);
}

/* Zone Tabs */
.zone-tab {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.zone-tab:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.zone-tab.active {
  color: white;
  background: var(--primary-blue);
  border-color: var(--primary-blue);
}

.zone-tab.zone-a.active {
  background: var(--zone-a);
  border-color: var(--zone-a);
}

.zone-tab.zone-b.active {
  background: var(--zone-b);
  border-color: var(--zone-b);
}

.zone-tab.zone-c.active {
  background: var(--zone-c);
  border-color: var(--zone-c);
}

.zone-tab.zone-d.active {
  background: var(--zone-d);
  border-color: var(--zone-d);
}

.zone-tab.zone-e.active {
  background: var(--zone-e);
  border-color: var(--zone-e);
}

.zone-count {
  background: rgba(255, 255, 255, 0.25);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

.zone-tab:not(.active) .zone-count {
  background: rgba(0, 0, 0, 0.08);
}

/* Zone-specific table borders (full border) */
.table-item[data-zone="A"] {
  border-color: var(--zone-a);
}

.table-item[data-zone="B"] {
  border-color: var(--zone-b);
}

.table-item[data-zone="C"] {
  border-color: var(--zone-c);
}

.table-item[data-zone="D"] {
  border-color: var(--zone-d);
}

.table-item[data-zone="E"] {
  border-color: var(--zone-e);
}

.table-item[data-zone="F"] {
  border-color: var(--zone-e);
}

/* Assuming F shares color or needs new one, using E for now as per previous logic if any */
.table-item[data-zone="G"] {
  border-color: var(--zone-e);
}

/* Status Backgrounds */
.table-item.reserved,
.table-item.paid {
  background-color: var(--status-reserved) !important;
  color: white !important;
  border-width: 2px;
}

.table-item.pending {
  background-color: var(--status-pending) !important;
  color: white !important;
  border-width: 2px;
}

.table-item.reserved .table-number,
.table-item.paid .table-number,
.table-item.pending .table-number {
  color: white !important;
}

.table-item.reserved .table-info,
.table-item.paid .table-info,
.table-item.pending .table-info,
.table-item.reserved .table-price,
.table-item.paid .table-price,
.table-item.pending .table-price {
  color: rgba(255, 255, 255, 0.9) !important;
}

.table-status-text {
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

/* Zone label inside table item */
.table-zone-label {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  color: white;
  display: inline-block;
  margin-bottom: 2px;
}

.table-zone-label.zone-a {
  background: var(--zone-a);
}

.table-zone-label.zone-b {
  background: var(--zone-b);
}

.table-zone-label.zone-c {
  background: var(--zone-c);
}

.table-zone-label.zone-d {
  background: var(--zone-d);
}

.table-zone-label.zone-e {
  background: var(--zone-e);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
  color: white;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Alert */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  border-left: 4px solid;
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--success);
  color: #047857;
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--error);
  color: #b91c1c;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--warning);
  color: #b45309;
}

.alert-info {
  background: rgba(74, 144, 226, 0.15);
  border-color: var(--primary-blue);
  color: #1e40af;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  animation: slideUp 0.3s ease;
}

.modal-header {
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--border);
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  padding: 1rem 2rem 2rem;
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

/* Loading */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Steps */
.steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 3rem;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
  flex: 1;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: all 0.3s ease;
}

.step.active .step-number {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-color: transparent;
  color: white;
}

.step.completed .step-number {
  background: var(--success);
  border-color: transparent;
  color: white;
}

.step-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

.step.active .step-label {
  color: var(--text-primary);
  font-weight: 600;
}

/* Summary */
.summary-item {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

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

.summary-label {
  color: var(--text-secondary);
}

.summary-value {
  font-weight: 600;
  color: var(--text-primary);
}

.summary-total {
  font-size: 1.5rem;
  color: var(--primary-light);
  font-weight: 700;
}

/* Responsive */

/* Tablet */
@media (max-width: 768px) {
  .tables-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
    padding: 1rem;
  }

  .table-number {
    font-size: 0.9rem;
  }

  .table-info,
  .table-price {
    font-size: 0.65rem;
  }

  .card {
    padding: 1.5rem;
  }

  .steps {
    flex-direction: column;
    gap: 1.5rem;
  }

  .steps::before {
    display: none;
  }

  .legend {
    gap: 1rem;
    flex-wrap: wrap;
  }

  .modal-content {
    margin: 1rem;
    max-height: 90vh;
    overflow-y: auto;
  }

  /* Header responsive */
  .header .container {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  /* Zone tabs scroll */
  .zone-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 0.5rem;
  }

  .zone-tab {
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Summary items stack */
  .summary-item {
    flex-direction: column;
    gap: 0.25rem;
  }

  /* Form spacing */
  .form-group {
    margin-bottom: 1rem;
  }

  /* Buttons full width */
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .container {
    padding: 0 0.75rem;
  }

  .tables-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.35rem;
    padding: 0.75rem;
  }

  .table-item {
    padding: 0.35rem;
    min-height: 55px;
  }

  .table-number {
    font-size: 0.8rem;
  }

  .table-info {
    font-size: 0.6rem;
  }

  .table-price {
    display: none;
  }

  .card {
    padding: 1rem;
    border-radius: 10px;
  }

  .legend {
    gap: 0.5rem;
    font-size: 0.75rem;
  }

  .legend-item span:first-child {
    width: 12px;
    height: 12px;
  }

  .step-number {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }

  /* Zone tabs smaller */
  .zone-tab {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
  }

  /* Modal full screen on mobile */
  .modal-content {
    margin: 0;
    border-radius: 0;
    min-height: 100vh;
    max-height: 100vh;
  }

  .modal-body {
    padding: 1rem;
  }

  .modal-footer {
    padding: 1rem;
    flex-direction: column;
    gap: 0.5rem;
  }

  .modal-footer .btn {
    width: 100%;
  }

  /* Summary section */
  .summary-total {
    font-size: 1.2rem;
  }

  /* Form inputs bigger touch targets */
  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 0.75rem;
    font-size: 16px;
    /* Prevent iOS zoom */
  }

  /* Stat cards (dashboard inline styles override) */
  h1,
  h2 {
    font-size: 1.1rem;
  }

  h3 {
    font-size: 1rem;
  }
}

/* Utilities */
.text-center {
  text-align: center;
}

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

.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

.mb-3 {
  margin-bottom: 1.5rem;
}

.hidden {
  display: none;
}