:root {
  /* Color Palette - NDIS Purple Theme */
  --primary-purple: #6B46C1;
  --primary-purple-dark: #553C9A;
  --primary-purple-light: #9F7AEA;
  --accent-pink: #ED64A6;
  --accent-blue: #4299E1;
  --accent-green: #48BB78;
  --accent-orange: #ED8936;

  /* Neutrals */
  --bg-primary: #0F0F23;
  --bg-secondary: #1A1A2E;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #FFFFFF;
  --text-secondary: #A0AEC0;
  --text-muted: #718096;

  /* UI Elements */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(107, 70, 193, 0.5);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(107, 70, 193, 0.3);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  color-scheme: dark;
}

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

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, #0F0F23 0%, #1A1A2E 50%, #1e1537 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(107, 70, 193, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(237, 100, 166, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl) 0;
}

.header h1 {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-purple-light), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  animation: slideDown 0.6s ease;
}

.header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  animation: slideDown 0.6s ease 0.1s backwards;
}

/* Card Styles */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-base);
  animation: fadeIn 0.5s ease;
}

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

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-purple-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--primary-purple), var(--accent-pink));
  border-radius: 2px;
}

/* Form Styles */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.form-row {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  grid-column: 1 / -1;
}

.form-row .form-group {
  flex: 1;
  min-width: 200px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input,
.form-select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.5em;
  padding-right: 3rem;
}

.form-select option {
  background-color: #1A1A2E;
  color: white;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-purple);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.2);
}

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

/* Button Styles */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  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, 0.2);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-purple), var(--primary-purple-dark));
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--border-hover);
}

.btn-danger {
  background: linear-gradient(135deg, #E53E3E, #C53030);
  color: white;
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(229, 62, 62, 0.3);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

/* Weekly Calendar */
.calendar-container {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.calendar-day {
  background: rgba(255, 255, 255, 0.03);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  min-height: 200px;
  transition: all var(--transition-base);
}

.calendar-day.drag-over {
  background: rgba(107, 70, 193, 0.1);
  border-color: var(--primary-purple);
  border-style: solid;
  transform: scale(1.02);
}

.day-header {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--primary-purple-light);
  margin-bottom: var(--spacing-sm);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--border-color);
}

.day-header.weekend {
  color: var(--accent-pink);
}

.shifts-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

/* Shift Card */
.shift-card {
  background: linear-gradient(135deg, rgba(107, 70, 193, 0.2), rgba(159, 122, 234, 0.1));
  border: 1px solid rgba(107, 70, 193, 0.3);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: move;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  animation: slideIn 0.3s ease;
}

.shift-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-purple);
}

.shift-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-purple-light);
}

.shift-card.dragging {
  opacity: 0.5;
  transform: rotate(2deg);
}

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

.shift-type {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--primary-purple-light);
}

.shift-delete {
  background: rgba(229, 62, 62, 0.2);
  color: #FC8181;
  border: 1px solid rgba(229, 62, 62, 0.3);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
}

.shift-delete:hover {
  background: rgba(229, 62, 62, 0.4);
  transform: scale(1.1);
}

.shift-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.shift-duration {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.shift-cost {
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-green);
  margin-top: var(--spacing-xs);
}

.shift-badge {
  display: inline-block;
  background: rgba(237, 100, 166, 0.2);
  color: var(--accent-pink);
  border: 1px solid rgba(237, 100, 166, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* Cost Summary */
.cost-summary {
  background: linear-gradient(135deg, rgba(72, 187, 120, 0.1), rgba(56, 178, 172, 0.1));
  border: 1px solid rgba(72, 187, 120, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.cost-summary-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: var(--spacing-md);
}

.cost-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.cost-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

.cost-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.cost-value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.cost-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: rgba(72, 187, 120, 0.2);
  border-radius: var(--radius-md);
  border: 2px solid rgba(72, 187, 120, 0.4);
  margin-top: var(--spacing-md);
}

.cost-total-label {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-green);
}

.cost-total-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-green);
  font-family: var(--font-mono);
}

/* Action Bar */
.action-bar {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}

/* Public Holiday Indicator */
.holiday-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(237, 137, 54, 0.2);
  color: var(--accent-orange);
  border: 1px solid rgba(237, 137, 54, 0.3);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* Animations */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

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

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

/* Responsive Design */
@media (max-width: 1200px) {
  .calendar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 2rem;
  }

  .calendar-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .calendar-grid {
    grid-template-columns: 1fr;
  }

  .cost-total-value {
    font-size: 1.5rem;
  }
}

/* Loading State */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-purple);
  animation: spin 1s ease-in-out infinite;
}

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

/* Tooltip */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  margin-bottom: 5px;
}

.tooltip:hover::after {
  opacity: 1;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-muted);
  font-style: italic;
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}