:root {
  --color-bg: #0b0c10;
  --color-surface: rgba(26, 28, 35, 0.4);
  --color-surface-hover: rgba(43, 47, 58, 0.6);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-primary: #00d2ff;
  --color-secondary: #3a7bd5;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent-glow: rgba(0, 210, 255, 0.15);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: 'Outfit', var(--font-sans);
  
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --radius-sm: 0.5rem;
  
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow-x: hidden;
}

/* Background Effects */
.app-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  animation: float 20s infinite alternate;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary), transparent 70%);
  top: -10%;
  left: -10%;
}

.orb-2 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--color-secondary), transparent 70%);
  bottom: -20%;
  right: -10%;
  animation-delay: -5s;
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-50px) scale(1.1); }
  100% { transform: translateY(0) scale(0.9); }
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--color-surface);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--color-border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.glass-panel-inner {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 900px;
  min-height: 600px;
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  box-shadow: 0 0 15px var(--color-accent-glow);
}

.progress-container {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.progress-bar {
  width: 150px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  width: 12.5%;
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.progress-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Views */
.view {
  display: none;
  flex-direction: column;
  flex-grow: 1;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.view.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

/* Questions */
.question-title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.question-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  font-size: 1.1rem;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.option-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.option-card:hover {
  background: var(--color-surface-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.option-card.selected {
  border-color: var(--color-primary);
  background: rgba(0, 210, 255, 0.05);
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.option-mark {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.option-card.selected .option-mark {
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.option-card.selected .option-mark::after {
  content: '';
  width: 10px;
  height: 10px;
  background: var(--color-bg);
  border-radius: 50%;
}

.option-text {
  font-weight: 500;
  font-size: 1.1rem;
}

/* Buttons */
.navigation-buttons {
  margin-top: auto;
  display: flex;
  justify-content: flex-start;
  padding-top: 2rem;
}

.btn {
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: 0 0 15px var(--color-accent-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(0, 210, 255, 0.3);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Loading */
.spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 400px;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 2rem;
}

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

.spinner-text {
  font-family: var(--font-heading);
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  color: transparent;
}

/* Results */
.segment-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(0, 210, 255, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.results-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.results-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.metric-card {
  padding: 2rem;
  text-align: center;
}

.metric-label {
  color: var(--color-text-muted);
  font-size: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.metric-context {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.cost-comparison h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.table-responsive {
  overflow-x: auto;
  margin-bottom: 3rem;
}

.glass-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
}

.glass-table th, .glass-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.glass-table th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.glass-table th:first-child {
  border-top-left-radius: var(--radius-sm);
}

.glass-table th:last-child {
  border-top-right-radius: var(--radius-sm);
}

.action-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.input-field {
  width: 100%;
  padding: 1rem;
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: white;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

/* Responsive */
@media (max-width: 768px) {
  .app-container {
    padding: 2rem;
    min-height: 100vh;
    border-radius: 0;
    justify-content: flex-start;
  }
  
  body {
    padding: 0;
    align-items: flex-start;
  }

  .question-title {
    font-size: 1.75rem;
  }

  .metric-value {
    font-size: 2.5rem;
  }
}

/* PDF Export Fallbacks (fixes html2canvas text-clip bug) */
.pdf-mode .metric-value {
  background: none !important;
  -webkit-background-clip: initial !important;
  color: var(--color-primary) !important;
  font-size: 2.5rem !important;
  word-break: break-word;
}