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

:root {
  /* Purple Gradient Colors */
  --primary-start: #667eea;
  --primary-end: #764ba2;
  --primary-dark: #5a67d8;
  
  /* UI Colors */
  --bg-primary: #f7fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --text-light: #a0aec0;
  
  /* Status Colors */
  --success: #48bb78;
  --warning: #ed8936;
  --error: #f56565;
  --info: #4299e1;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-md);
  padding-bottom: 80px; /* Space for bottom nav */
}

/* Gradient Background */
.gradient-bg {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  min-height: 100vh;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  color: white;
  padding: var(--spacing-lg) var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.header p {
  font-size: 0.875rem;
  opacity: 0.9;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.card-clickable {
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 44px; /* Touch target */
  min-width: 44px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--primary-start);
}

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

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

.btn-danger:hover {
  background: #e53e3e;
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
  min-height: 44px;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-start);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* Search Input */
.search-input {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1.125rem;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-start);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: #c6f6d5;
  color: #22543d;
}

.badge-warning {
  background: #feebc8;
  color: #7c2d12;
}

.badge-info {
  background: #bee3f8;
  color: #2c5282;
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
  z-index: 1000;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  min-width: 60px;
  min-height: 44px;
  justify-content: center;
}

.nav-item.active {
  color: var(--primary-start);
}

.nav-item:hover {
  color: var(--primary-start);
}

.nav-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.nav-label {
  font-size: 0.75rem;
  font-weight: 500;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: var(--spacing-xs);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-start) 0%, var(--primary-end) 100%);
  transition: width var(--transition-normal);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal-content {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.modal-message {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

/* Loading Spinner */
.loading {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  z-index: 3000;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid #e2e8f0;
  border-top-color: var(--primary-start);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden {
  display: none !important;
}

/* Responsive */
@media (min-width: 768px) {
  .container {
    padding: var(--spacing-xl);
  }
  
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

/* Table List */
.table-item {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.table-number {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.table-owner {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.table-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}