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

:root {
  --color-bg: #0a0a0b;
  --color-bg-elevated: #141416;
  --color-bg-card: #1a1a1d;
  --color-text: #fafafa;
  --color-text-muted: #a1a1aa;
  --color-text-subtle: #71717a;
  --color-accent: #6366f1;
  --color-accent-hover: #818cf8;
  --color-accent-glow: rgba(99, 102, 241, 0.3);
  --color-success: #22c55e;
  --color-border: #27272a;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.nav {
  padding: 24px 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-weight: 600;
  font-size: 20px;
  color: var(--color-text);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 60px 24px;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 1.1rem;
  color: var(--color-accent);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.highlight {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.cta-button {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  padding: 16px 36px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.2s ease;
  box-shadow: 0 0 30px var(--color-accent-glow);
}

.cta-button:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--color-accent-glow);
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-title.left-align {
  text-align: left;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

/* Problem Section */
.problem {
  background: var(--color-bg);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.problem-card {
  background: var(--color-bg-card);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.problem-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.problem-conclusion {
  text-align: center;
  margin-top: 48px;
  font-size: 1.2rem;
  color: var(--color-text);
  font-weight: 500;
}

/* Offer Section */
.offer {
  background: var(--color-bg-elevated);
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.offer-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.offer-check {
  color: var(--color-success);
  font-size: 1.4rem;
  font-weight: 600;
  flex-shrink: 0;
}

.offer-item strong {
  display: block;
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.offer-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* Solution Section */
.solution {
  background: var(--color-bg-elevated);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-card);
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

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

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Isolation Section */
.isolation {
  background: var(--color-bg);
}

.isolation-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.isolation-text .lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.benefits-list {
  list-style: none;
}

.benefits-list li {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.check {
  color: var(--color-success);
  font-weight: 600;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.benefits-list strong {
  display: block;
  margin-bottom: 4px;
  font-weight: 600;
}

.benefits-list p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.isolation-visual {
  display: flex;
  justify-content: center;
}

.sandbox-diagram {
  position: relative;
}

.sandbox-box {
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 32px;
  min-width: 280px;
  position: relative;
}

.sandbox-label {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--color-bg);
  padding: 0 12px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
}

.sandbox-inner {
  display: grid;
  gap: 12px;
}

.sandbox-item {
  background: var(--color-bg-elevated);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.sandbox-owner {
  text-align: center;
  margin-top: 20px;
  color: var(--color-success);
  font-weight: 500;
  font-size: 0.9rem;
}

/* Clarity Section */
.clarity {
  background: var(--color-bg-elevated);
}

.clarity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.clarity-card {
  background: var(--color-bg-card);
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.clarity-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.clarity-card.is h3 {
  color: var(--color-success);
}

.clarity-card.isnt h3 {
  color: var(--color-text-subtle);
}

.clarity-card ul {
  list-style: none;
}

.clarity-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.clarity-card li:last-child {
  border-bottom: none;
}

.clarity-card.is li::before {
  content: '✓ ';
  color: var(--color-success);
}

.clarity-card.isnt li::before {
  content: '✗ ';
  color: var(--color-text-subtle);
}

/* How Section */
.how {
  background: var(--color-bg);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}

.step {
  text-align: center;
  padding: 24px;
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
  padding: 120px 0;
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-content .section-subtitle {
  margin-bottom: 48px;
}

/* CTA Tracks */
.cta-track {
  max-width: 500px;
  margin: 0 auto;
  padding: 32px;
  border-radius: var(--radius);
  text-align: center;
}

.track-priority,
.track-premium {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.05) 100%);
  border: 1px solid var(--color-accent);
}

.track-free {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.track-badge {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.track-badge.secondary {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.cta-track h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.cta-track p {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.cta-track .cta-button {
  margin-bottom: 12px;
}

.cta-button.primary {
  background: var(--color-accent);
}

.cta-button.secondary {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.cta-button.secondary:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-elevated);
}

.track-note {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  margin: 0;
}

/* Region Selector */
.region-selector {
  margin: 24px 0;
}

.region-label {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.region-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.region-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 28px;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.2s ease;
  min-width: 120px;
}

.region-btn:hover {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

.region-flag {
  font-size: 2rem;
}

.region-name {
  font-size: 0.9rem;
  font-weight: 500;
}

.region-provider {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  margin-top: 2px;
}

.region-btn.premium {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.05);
}

.region-btn.premium:hover {
  background: rgba(99, 102, 241, 0.15);
}

@media (max-width: 480px) {
  .region-buttons {
    flex-direction: column;
  }
  
  .region-btn {
    flex-direction: row;
    justify-content: center;
    padding: 16px 24px;
  }
}

.cta-divider {
  display: flex;
  align-items: center;
  margin: 32px auto;
  max-width: 300px;
}

.cta-divider::before,
.cta-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.cta-divider span {
  padding: 0 16px;
  color: var(--color-text-subtle);
  font-size: 0.9rem;
}

.track-waitlist {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.interest-form {
  margin: 0 auto;
  max-width: 440px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-input {
  flex: 1;
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-radius: 50px;
  background: var(--color-bg-card);
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input:focus {
  border-color: var(--color-accent);
}

.form-input::placeholder {
  color: var(--color-text-subtle);
}

.form-button {
  padding: 16px 32px;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.form-button:hover {
  background: var(--color-accent-hover);
}

.form-note {
  margin-top: 16px;
  color: var(--color-text-subtle);
  font-size: 0.85rem;
}

.form-success {
  display: none;
  background: var(--color-bg-card);
  border: 1px solid var(--color-success);
  padding: 20px;
  border-radius: var(--radius);
  margin-top: 20px;
}

.form-success.show {
  display: block;
}

.form-success p {
  color: var(--color-success);
  font-weight: 500;
  margin: 0;
}

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

.footer-content {
  text-align: center;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-logo .logo-icon {
  font-size: 24px;
}

.footer-logo .logo-text {
  font-weight: 600;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--color-text-subtle);
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content {
    padding: 40px 20px;
  }
  
  .section {
    padding: 80px 0;
  }
  
  .isolation-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .isolation-text {
    order: 1;
  }
  
  .isolation-visual {
    order: 2;
  }
  
  .section-title.left-align {
    text-align: center;
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .form-button {
    width: 100%;
  }
  
  .sandbox-box {
    min-width: unset;
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .problem-card,
  .feature-card,
  .clarity-card {
    padding: 24px;
  }
  
  .step {
    padding: 16px;
  }
}