:root {
  --background: #f8fafc;
  --background-secondary: #f1f5f9;
  --foreground: #0f172a;
  --card: rgba(255, 255, 255, 0.8);
  --card-border: rgba(0, 0, 0, 0.08);
  --card-foreground: #0f172a;
  --muted: rgba(0, 0, 0, 0.04);
  --muted-foreground: #64748b;
  --border: rgba(0, 0, 0, 0.1);
  --primary: #0891b2;
  --primary-glow: rgba(8, 145, 178, 0.3);
  --primary-hover: #06b6d4;
  --accent: rgba(8, 145, 178, 0.1);
  --success: #059669;
  --success-bg: rgba(5, 150, 105, 0.1);
  --error: #dc2626;
  --error-bg: rgba(220, 38, 38, 0.1);
  --radius: 0.75rem;
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.08);
  --header-bg: rgba(248, 250, 252, 0.8);
  --input-bg: rgba(255, 255, 255, 0.9);
  --gradient-start: rgba(8, 145, 178, 0.05);
}

.dark {
  --background: #0a0a0f;
  --background-secondary: #12121a;
  --foreground: #f0f0f5;
  --card: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-foreground: #f0f0f5;
  --muted: rgba(255, 255, 255, 0.05);
  --muted-foreground: #8b8b9e;
  --border: rgba(255, 255, 255, 0.1);
  --primary: #06b6d4;
  --primary-glow: rgba(6, 182, 212, 0.4);
  --primary-hover: #22d3ee;
  --accent: rgba(6, 182, 212, 0.1);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --glass: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --header-bg: rgba(10, 10, 15, 0.8);
  --input-bg: rgba(0, 0, 0, 0.3);
  --gradient-start: rgba(6, 182, 212, 0.05);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--background);
  background-image: 
    radial-gradient(ellipse at top, var(--gradient-start) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
  color: var(--foreground);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
}

.dark body {
  background-image: 
    radial-gradient(ellipse at top, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 2.25rem;
  width: auto;
  filter: drop-shadow(0 0 10px var(--primary-glow));
}

.logo-text {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.375rem;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(10px);
  color: var(--muted-foreground);
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--accent);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.sun-icon { display: none; }
.moon-icon { display: block; }
.dark .sun-icon { display: block; }
.dark .moon-icon { display: none; }

.main {
  flex: 1;
  padding: 7rem 1.5rem 3rem;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

.results-wrapper {
  width: min(1400px, 100% - 2rem);
  margin: 0 auto;
}

@media (max-width: 640px) {
  .results-wrapper {
    width: 100%;
    padding: 0 0.75rem;
  }
}

.hero {
  text-align: center;
  margin-bottom: 3rem;
}

.hero h1 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 3.5rem;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--muted-foreground);
  font-size: 1.125rem;
  max-width: 28rem;
  margin: 0 auto;
}

.card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.3), transparent);
}

.vin-input-card {
  padding: 2rem;
  background: linear-gradient(180deg, var(--gradient-start) 0%, transparent 100%);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.input-row {
  display: flex;
  gap: 0.75rem;
}

@media (max-width: 480px) {
  .input-row {
    flex-direction: column;
  }
}

.input {
  flex: 1;
  padding: 1rem 1.25rem;
  font-size: 1.125rem;
  font-family: 'Space Grotesk', 'SF Mono', monospace;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--input-bg);
  color: var(--foreground);
  outline: none;
  transition: all 0.3s ease;
}

.input:focus {
  border-color: var(--primary);
  box-shadow: 
    0 0 0 4px rgba(6, 182, 212, 0.1),
    0 0 30px rgba(6, 182, 212, 0.2);
}

.input::placeholder {
  text-transform: none;
  letter-spacing: normal;
  color: var(--muted-foreground);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
}

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

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn:hover::before {
  opacity: 1;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn:not(:disabled):hover {
  transform: translateY(-2px);
}

.btn:not(:disabled):active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 50%, #8b5cf6 100%);
  color: white;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:not(:disabled):hover {
  box-shadow: 0 6px 30px var(--primary-glow);
}

.spinner {
  display: none;
  animation: spin 1s linear infinite;
}

.btn.loading .search-icon,
.btn.loading .btn-text {
  display: none;
}

.btn.loading .spinner {
  display: block;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.helper-text {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}

.char-count {
  font-weight: 600;
  font-family: 'Space Grotesk', monospace;
}

.char-count.valid {
  color: var(--success);
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  backdrop-filter: blur(10px);
  border: 1px solid;
}

.alert-icon {
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.alert-error {
  background: var(--error-bg);
  border-color: rgba(239, 68, 68, 0.3);
  color: #b91c1c;
}

.dark .alert-error {
  color: #fca5a5;
}

.alert-success {
  background: var(--success-bg);
  border-color: rgba(16, 185, 129, 0.3);
  color: #047857;
}

.dark .alert-success {
  color: #6ee7b7;
}

.results-card {
  padding: 0;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.03) 0%, var(--glass) 100%);
}

.results-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.vehicle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
  color: white;
  flex-shrink: 0;
  box-shadow: 0 8px 30px var(--primary-glow);
}

.vehicle-title h2 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.vehicle-subtitle {
  color: var(--muted-foreground);
  font-size: 1rem;
  margin-top: 0.375rem;
}

.results-content {
  padding: 2rem;
}

.result-section {
  margin-bottom: 2.5rem;
}

.result-section:last-child {
  margin-bottom: 0;
}

.section-header {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header::before {
  content: '';
  width: 3px;
  height: 1rem;
  background: linear-gradient(180deg, var(--primary), #8b5cf6);
  border-radius: 2px;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .section-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
  }
}

@media (min-width: 1024px) {
  .section-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
  padding: 1rem;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.result-item:hover {
  background: rgba(6, 182, 212, 0.05);
  border-color: rgba(6, 182, 212, 0.2);
}

.result-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-value {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  word-wrap: break-word;
  overflow-wrap: break-word;
  color: var(--foreground);
}

.all-fields-section {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.all-fields-section summary {
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--muted-foreground);
  transition: all 0.3s ease;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.all-fields-section summary:hover {
  color: var(--primary);
}

.all-fields-section summary::before {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.3s;
}

.all-fields-section details[open] summary::before {
  transform: rotate(45deg);
}

.all-fields-section details[open] summary {
  margin-bottom: 1.25rem;
}

.all-fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.625rem;
}

@media (min-width: 1024px) {
  .all-fields-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.all-field-item {
  display: flex;
  flex-direction: column;
  padding: 0.875rem 1rem;
  border-radius: 0.5rem;
  background: var(--glass);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.all-field-item:hover {
  border-color: rgba(6, 182, 212, 0.2);
}

.all-field-label {
  color: var(--muted-foreground);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}

.all-field-value {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.9375rem;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.footer {
  border-top: 1px solid var(--border);
  background: var(--muted);
  padding: 1rem 1.5rem;
  position: relative;
}

.dark .footer {
  background: rgba(0, 0, 0, 0.3);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.footer-left {
  display: flex;
  align-items: center;
}

.footer-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
}

.footer-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.footer-contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.footer-email:hover {
  color: var(--primary);
}

.footer-email svg {
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-legal-link {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.footer-legal-link:hover {
  color: var(--primary);
}

.footer-divider {
  color: var(--border);
  font-size: 0.75rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

@media (max-width: 640px) {
  .footer-content {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 1.25rem;
  }
  
  .footer-left {
    order: 2;
  }
  
  .footer-center {
    order: 1;
  }
  
  .footer-right {
    order: 3;
    align-items: center;
  }
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-link {
  transition: all 0.3s ease;
}

.footer-link:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 15px var(--primary-glow));
}

.footer-logo {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  transition: border-color 0.3s;
}

.footer-link:hover .footer-logo {
  border-color: var(--primary);
}

.footer-text {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  font-weight: 500;
}

.footer-text-link {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-text-link:hover {
  color: var(--primary);
}