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

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #8b5cf6;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --background-dark: #0f0f23;
  --surface-dark: #1a1a2e;
  --surface-light: rgba(255, 255, 255, 0.05);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

body {
  font-family: "Inter", sans-serif;
  background: var(--background-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

#wrapper {
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Navigation */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-brand i {
  font-size: 1.75rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--surface-light);
}

/* Hero Section */
.hero-section {
  padding: 4rem 2rem;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.service-category {
  background: var(--surface-light);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.service-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.category-header {
  text-align: center;
  margin-bottom: 2rem;
}

.category-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.service-category h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.service-category p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.service-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.action-btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.action-btn.secondary {
  background: var(--surface-dark);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.service-stats {
  text-align: center;
}

.stat-badge {
  background: var(--success-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Features Section */
.features-section {
  margin-top: 4rem;
}

.features-section h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 2rem;
  text-align: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-item {
  text-align: center;
  padding: 1.5rem;
}

.feature-item i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.feature-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Page Container */
.page-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.header-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.header-text h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.header-text p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.back-btn {
  background: var(--surface-light);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.back-btn:hover {
  background: var(--surface-dark);
}

/* Compression Container */
.compression-container {
  max-width: 800px;
  margin: 0 auto;
}

/* Upload Section */
.upload-section {
  margin-bottom: 2rem;
}

.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: 1rem;
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  background: var(--surface-light);
  backdrop-filter: blur(10px);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary-color);
  background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.upload-zone h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.supported-formats {
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--surface-dark);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  display: inline-block;
}

/* Progress Section */
.progress-section {
  background: var(--surface-light);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  backdrop-filter: blur(10px);
  animation: slideUp 0.5s ease;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.progress-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

#progressPercent {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-color);
}

.progress-bar {
  width: 100%;
  height: 0.75rem;
  background: var(--surface-dark);
  border-radius: 0.375rem;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 0.375rem;
  transition: width 0.3s ease;
  width: 0%;
}

.progress-details {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Results Section */
.results-section {
  background: var(--surface-light);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  animation: slideUp 0.5s ease;
}

.results-header {
  margin-bottom: 2rem;
}

.success-icon {
  font-size: 3rem;
  color: var(--success-color);
  margin-bottom: 1rem;
}

.results-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

.compression-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-item {
  background: var(--surface-dark);
  padding: 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
}

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

.stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
}

.stat-value.success {
  color: var(--success-color);
}

.download-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.download-button {
  background: linear-gradient(135deg, var(--success-color), #059669);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
}

.download-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.secondary-button {
  background: var(--surface-dark);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.secondary-button:hover {
  background: var(--surface-light);
}

/* Error Section */
.error-section {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error-color);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  animation: slideUp 0.5s ease;
}

.error-header {
  margin-bottom: 1.5rem;
}

.error-icon {
  font-size: 3rem;
  color: var(--error-color);
  margin-bottom: 1rem;
}

.error-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--error-color);
}

.error-message {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Animations */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero-section {
    padding: 2rem 1rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .page-container {
    padding: 1rem;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .compression-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .download-section {
    flex-direction: column;
    width: 100%;
  }

  .download-button,
  .secondary-button {
    width: 100%;
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .service-actions {
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .upload-zone {
    padding: 2rem 1rem;
  }

  .upload-icon {
    font-size: 2rem;
  }

  .upload-zone h3 {
    font-size: 1.25rem;
  }
}