:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --success-color: #10b981;
  --success-hover: #059669;
  --background-from: #1e1b4b;
  --background-to: #312e81;
  --surface-color: rgba(255, 255, 255, 0.05);
  --surface-color-hover: rgba(255, 255, 255, 0.1);
  --surface-border: rgba(255, 255, 255, 0.1);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --bg-input: rgba(0, 0, 0, 0.2);
  --glass-blur: blur(16px);
  --border-radius: 16px;
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, var(--background-from), var(--background-to));
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Glassmorphism Utilities */
.glass {
  background: var(--surface-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--surface-border);
  border-radius: var(--border-radius);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.glass-header {
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--surface-border);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(10px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.025em;
}

.page-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  background: linear-gradient(to right, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Grid Layout for Tiles */
.tiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

/* Tile Styles */
.tile {
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.tile:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.tile.success-state {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(5, 150, 105, 0.25));
  border-color: rgba(16, 185, 129, 0.3);
}

.tile-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.tile-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  font-size: 1.5rem;
}

.tile-title {
  font-size: 1.25rem;
  font-weight: 500;
}

/* Buttons */
.btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
}

.btn:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: scale(1.02);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

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

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

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
}

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

.btn-success:hover:not(:disabled) {
  background: var(--success-hover);
}

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

label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

input, select, textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition-speed);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(0, 0, 0, 0.3);
}

/* Placeholder color */
::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

/* Dynamic Rows */
.dynamic-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  align-items: end;
}

.row-total-display {
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  text-align: right;
  font-weight: 500;
  border: 1px solid transparent;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* Hide utility */
.hidden {
  display: none !important;
}

/* Summaries */
.tile-summary {
  margin: 1rem 0;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  font-size: 0.9rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.summary-item:last-child {
  margin-bottom: 0;
}

/* Print Section */
#print-modal {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.print-content {
  width: 90%;
  max-width: 800px;
  height: 90vh;
  display: flex;
  flex-direction: column;
}

#print-frame {
  flex: 1;
  background: white;
  border-radius: 8px;
  margin-bottom: 1rem;
}

/* Login specific */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
}