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

:root {
  --color-primary: #0F62FE;
  --color-primary-light: #4589FF;
  --color-primary-dark: #0043CE;
  --color-secondary: #00D4AA;
  --color-accent: #FF6B9D;
  --color-text: #0F172A;
  --color-text-light: #64748B;
  --color-text-muted: #94A3B8;
  --color-bg: #FFFFFF;
  --color-bg-light: #F8FAFC;
  --color-bg-dark: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;
  --border-radius-sm: 8px;
  --border-radius: 16px;
  --border-radius-lg: 24px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  padding: var(--spacing-md) 0;
  transition: var(--transition);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 24px;
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition-fast);
}

.logo:hover {
  transform: translateY(-1px);
}

.logo svg {
  color: var(--color-primary);
  filter: drop-shadow(0 2px 4px rgba(15, 98, 254, 0.2));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-outline {
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

/* Base button normalization for anchors and buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 44px;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible {
  outline: 3px solid rgba(15, 98, 254, 0.35);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(15, 98, 254, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(15, 98, 254, 0.4);
}

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

.btn-secondary {
  background: white;
  color: var(--color-text);
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text);
}

.btn-outline:hover {
  background: var(--color-text);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-large {
  padding: 18px 36px;
  font-size: 18px;
}

.hero {
  padding: calc(100px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(15, 98, 254, 0.05) 0%, transparent 60%),
              linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 40%;
  height: 100%;
  background: radial-gradient(circle, rgba(15, 98, 254, 0.08) 0%, transparent 70%);
  animation: float 20s infinite ease-in-out;
}

.hero::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 40%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
  animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(50px, 50px) scale(1.1);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 72px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.03em;
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-size: 21px;
  color: var(--color-text-light);
  max-width: 650px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  justify-content: center;
  padding-top: var(--spacing-2xl);
  border-top: 2px solid var(--color-border-light);
  max-width: 700px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat {
  text-align: center;
  position: relative;
}

.stat::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
  line-height: 1;
}

.stat-label {
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.demo-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg);
  position: relative;
}

.demo-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-2xl);
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid var(--color-border-light);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.demo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  background-size: 200% 100%;
  animation: gradient 3s ease infinite;
}

@keyframes gradient {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.demo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
}

.input-group {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.url-input {
  flex: 1;
  padding: 18px 24px;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 16px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--color-bg-light);
}

.url-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: white;
  box-shadow: 0 0 0 4px rgba(15, 98, 254, 0.1);
}

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

.quick-features {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  font-size: 15px;
  color: var(--color-text-light);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.checkbox-label:hover {
  background: var(--color-bg-light);
  color: var(--color-text);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.features-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.section-header p {
  font-size: 20px;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  background: white;
  border: 2px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(15, 98, 254, 0.03) 0%, rgba(0, 212, 170, 0.03) 100%);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius);
  background: linear-gradient(135deg, rgba(15, 98, 254, 0.1) 0%, rgba(0, 212, 170, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  position: relative;
  z-index: 1;
}

.feature-card p {
  color: var(--color-text-light);
  line-height: 1.7;
  font-size: 16px;
  position: relative;
  z-index: 1;
}

.cta-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 1;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: 52px;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.cta-content p {
  font-size: 20px;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-content .btn-primary {
  background: white;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.cta-content .btn-primary:hover {
  background: var(--color-bg-light);
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.cta-note {
  font-size: 15px;
  opacity: 0.9;
}

.footer {
  background: var(--color-text);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  position: relative;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-section a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  margin-bottom: 12px;
  transition: var(--transition-fast);
  font-size: 15px;
}

.footer-section a:hover {
  color: white;
  transform: translateX(4px);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 24px;
  margin-bottom: var(--spacing-md);
}

.footer-logo svg {
  filter: drop-shadow(0 2px 4px rgba(15, 98, 254, 0.3));
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  font-size: 15px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

@media (max-width: 1024px) {
  .hero-title {
    font-size: 56px;
  }

  .section-header h2 {
    font-size: 44px;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .nav {
    padding: var(--spacing-sm) 0;
  }

  .nav-links {
    gap: var(--spacing-sm);
  }

  .nav-links a {
    display: none;
  }

  .hero {
    padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  }

  .hero-title {
    font-size: 40px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-cta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .hero-cta button {
    width: 100%;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .stat::after {
    display: none;
  }

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

  .input-group {
    flex-direction: column;
  }

  .section-header h2 {
    font-size: 36px;
  }

  .section-header p {
    font-size: 17px;
  }

  .cta-content h2 {
    font-size: 36px;
  }

  .cta-content p {
    font-size: 17px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

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

  .btn-primary,
  .btn-secondary,
  .btn-outline {
    padding: 12px 20px;
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }

  .stat-number {
    font-size: 36px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .cta-content h2 {
    font-size: 28px;
  }
}