/* ===== CSS Variables ===== */
:root {
  --color-bg: #09090b;
  --color-bg-secondary: #18181b;
  --color-bg-tertiary: #27272a;
  --color-surface: rgba(255, 255, 255, 0.03);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;

  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #60a5fa;

  --color-accent: #06b6d4;
  --color-accent-dark: #0891b2;

  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --gradient-glow: radial-gradient(
    ellipse at center,
    rgba(59, 130, 246, 0.15) 0%,
    transparent 70%
  );

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.3);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--gradient-primary);
  color: white !important;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 600 !important;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-hover);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  padding: 160px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 600px;
  background: var(--gradient-glow);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.badge-pulse {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.hero-image-container {
  position: relative;
  margin-top: 60px;
  padding: 0 24px;
}

.hero-image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: var(--gradient-glow);
  filter: blur(60px);
}

.hero-image {
  position: relative;
  max-width: 1000px;
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid var(--color-border);
}

/* ===== Section Styles ===== */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary-light);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== Features Section ===== */
.features {
  padding: 120px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-highlight {
  grid-column: span 2;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.1) 0%,
    rgba(6, 182, 212, 0.05) 100%
  );
  border-color: rgba(59, 130, 246, 0.2);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: white;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* ===== How It Works ===== */
.how-it-works {
  padding: 120px 0;
  background: var(--color-bg-secondary);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 24px;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.step p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.step-connector {
  width: 80px;
  height: 2px;
  background: var(--color-border);
  margin-top: 28px;
}

/* ===== Pricing Section ===== */
.pricing {
  padding: 120px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.pricing-featured {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.1) 0%,
    rgba(6, 182, 212, 0.05) 100%
  );
  border-color: rgba(59, 130, 246, 0.3);
  transform: scale(1.02);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
}

.pricing-header h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-amount {
  font-size: 48px;
  font-weight: 700;
}

.price-period {
  color: var(--color-text-muted);
  font-size: 16px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features svg {
  width: 20px;
  height: 20px;
  stroke: #22c55e;
  flex-shrink: 0;
}

/* ===== Download Section ===== */
.download {
  padding: 120px 0;
  background: var(--color-bg-secondary);
  text-align: center;
}

.download-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  margin-bottom: 16px;
}

.download-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
}

.download-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 16px 28px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.download-btn:hover:not(.disabled) {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.download-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.download-btn svg {
  width: 32px;
  height: 32px;
}

.download-mac svg {
  fill: var(--color-text);
}

.download-windows svg {
  fill: var(--color-text-secondary);
}

.download-btn-text {
  text-align: left;
}

.download-btn-label {
  display: block;
  font-size: 12px;
  color: var(--color-text-muted);
}

.download-btn-platform {
  display: block;
  font-size: 18px;
  font-weight: 600;
}

.download-note {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== Footer ===== */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 80px;
}

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 0;
  transition: color 0.2s;
}

.footer-column a:hover {
  color: var(--color-text);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-highlight {
    grid-column: span 1;
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step-connector {
    width: 2px;
    height: 40px;
    margin: 0;
  }

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

  .pricing-featured {
    transform: none;
  }

  .footer-content {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    gap: 40px;
    flex-wrap: wrap;
  }
}

@media (max-width: 600px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn-lg {
    width: 100%;
  }
}