/* Reset and Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: #0B0B0B;
  color: #F5F5F5;
  line-height: 1.6;
  font-weight: 400;
  font-size: 16px;
  padding-top: 80px;
}

/* Design System */
:root {
  --black: #0B0B0B;
  --white: #F5F5F5;
  --gray: #9CA3AF;
  --accent: #1E3A8A; /* Blue accent */
  --accent-alt: #065F46; /* Green accent, alternative */
  
  /* Typography */
  --font-headline: 600;
  --font-headline-bold: 700;
  --font-body: 400;
  --font-body-medium: 500;
  
  /* Layout */
  --max-width: 1150px;
  --spacing-unit: 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-headline);
  line-height: 1.2;
  margin-bottom: var(--spacing-unit);
  letter-spacing: 0.02em;
}

h1 {
  font-size: 3.5rem;
  font-weight: var(--font-headline-bold);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.5rem;
  font-weight: var(--font-headline-bold);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.875rem;
  margin-bottom: 1.25rem;
}

h4 {
  font-size: 1.25rem;
  font-weight: var(--font-headline-bold);
}

p {
  margin-bottom: var(--spacing-unit);
  font-weight: var(--font-body);
  line-height: 1.8;
}

/* Layout Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

/* Header/Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid rgba(107, 114, 128, 0.15);
  transition: border-color 0.3s ease;
}

header.scrolled {
  background-color: rgba(11, 11, 11, 0.95);
  backdrop-filter: blur(10px);
  border-bottom-color: rgba(245, 245, 245, 0.1);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: var(--font-headline-bold);
  color: #FF325D;
  text-decoration: none;
  letter-spacing: 0.05em;
}

.logo-image {
  height: 40px;
  display: flex;
  align-items: center;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  flex: 1;
  justify-content: center;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--white);
  text-decoration: none;
  font-weight: var(--font-body);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

/* CTAs */
.cta-primary {
  background-color: #097CF7;
  color: var(--white);
  padding: 0.75rem 1.75rem;
  border-radius: 0;
  text-decoration: none;
  font-weight: var(--font-headline);
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
  display: inline-block;
  letter-spacing: 0.02em;
}

.cta-primary:hover {
  background-color: #0860C4;
  transform: translateY(-2px);
}

.cta-secondary {
  background-color: transparent;
  color: #B4B8C0;
  border: 1px solid rgba(107, 114, 128, 0.45);
  padding: 0.75rem 1.75rem;
  text-decoration: none;
  font-weight: var(--font-body-medium);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-block;
}

.cta-secondary:hover {
  border-color: var(--gray);
  color: var(--white);
}

/* Minimal Typography System */
.text-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #E5E7EB;
  margin-bottom: 1rem;
  font-weight: 500;
}

.text-hero {
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  line-height: 1.05;
  font-weight: 600;
  color: #F5F5F5;
  margin-bottom: 1.5rem;
}

.text-bridge {
  font-size: 1.125rem;
  line-height: 1.6;
  color: #D1D5DB;
  margin-bottom: 2rem;
}

.text-proof {
  font-size: 0.9rem;
  color: #B4B8C0;
  margin-bottom: 2.5rem;
}

.text-caption {
  font-size: 0.8rem;
  color: #6B7280;
  margin-top: 1.5rem;
  text-align: center;
}

/* Hero Section */
.hero-section {
  padding-top: 3rem;
}

.hero {
  margin-top: 0;
  padding: 8rem 0;
  display: flex;
  align-items: flex-start;
  gap: 5rem;
}

.hero-content {
  flex: 1;
}

.hero-ctas {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  justify-content: center;
}

.hero-diagram {
  flex: 1;
  min-height: 550px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0;
}

.hero-diagram-inner {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.diagram-svg {
  max-width: 100%;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin: 0 auto 2rem;
  max-width: 800px;
  width: fit-content;
}

.column {
  padding: 2rem 0;
}

.column h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.column li {
  padding: 0.5rem 0;
  color: var(--white);
  position: relative;
  padding-left: 1.5rem;
}

.column li:before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gray);
}

/* Reusable Bordered Box */
.bordered-box {
  border: 1px solid rgba(107, 114, 128, 0.2);
  padding: 10px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  width: fit-content;
}

.bordered-box--full {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.bordered-box.threat-model {
  align-items: center;
  gap: 0.55rem;
  min-width: clamp(320px, 40%, 520px);
  padding-left: 40px;
  padding-right: 40px;
}

.bordered-box--full .buy-paths {
  margin: 0;
  width: fit-content;
  max-width: none;
}

/* Threat Model Diagram */
.threat-model-step {
  text-align: center;
  font-size: 0.95rem;
  font-weight: var(--font-headline);
  letter-spacing: 0.1em;
  color: var(--white);
}

.threat-model-step.highlight {
  color: var(--accent);
}

.threat-model-line {
  color: #8B92A3;
  font-size: 1.25rem;
  line-height: 0.5;
}

/* System Overview (Pricing Reference) */
.system-items {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin: 3rem 0;
}

.system-item {
  padding: 2rem;
  border: 1px solid rgba(107, 114, 128, 0.2);
  text-align: center;
}

.system-item h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.system-item p {
  font-size: 1.25rem;
  font-weight: var(--font-headline-bold);
  color: var(--accent);
  margin: 0;
}

.system-item.highlight {
  background-color: rgba(30, 58, 138, 0.1);
  border-color: var(--accent);
}

/* How to Buy Section */
.buy-paths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  margin: 0;
  max-width: 900px;
  width: 100%;
}

.buy-path {
  padding: 2.5rem;
  border: 1px solid rgba(107, 114, 128, 0.2);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.buy-path h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  width: 100%;
}

.buy-offer {
  font-size: 1.5rem;
  font-weight: var(--font-headline-bold);
  color: #097CF7;
  margin-bottom: 1rem;
}

.buy-description {
  font-size: 0.95rem;
  color: var(--gray);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* Scarcity Section */
.capacity-display {
  background-color: rgba(107, 114, 128, 0.1);
  border: 1px solid rgba(107, 114, 128, 0.2);
  padding: 3rem;
  margin: 2rem 0;
  text-align: center;
}

.capacity-title {
  font-size: 1.25rem;
  font-weight: var(--font-headline-bold);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.capacity-metrics {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 1.5rem;
  font-size: 1.125rem;
}

.capacity-metric {
  flex: 0 0 auto;
}

.capacity-number {
  font-size: 2rem;
  font-weight: var(--font-headline-bold);
  color: var(--accent);
}

/* List Styles */
ul {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}

ul li {
  font-size: 1.1rem;
  line-height: 2;
}

/* Section Background & Borders */
.section-highlight {
  background-color: rgba(107, 114, 128, 0.1);
  border: 1px solid rgba(107, 114, 128, 0.2);
  padding: 2rem;
  margin: 2rem 0;
}

.section-highlight h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.section-highlight p {
  color: var(--gray);
}

.section-highlight ul {
  margin: 1rem 0;
}

/* Process Steps */
.process-step {
  margin-bottom: 2rem;
}

.process-step h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.process-step p {
  color: var(--gray);
}

/* Hero Subhead */
.hero-subhead {
  font-size: 1.25rem;
  color: var(--gray);
  margin-top: 1rem;
}

/* Pricing Large */
.pricing-large {
  margin: 3rem 0;
  font-size: 1.5rem;
}

.pricing-value {
  color: var(--accent);
  font-weight: 700;
  font-size: 3rem;
}

.pricing-subtext {
  color: var(--gray);
  margin-top: 1rem;
}

/* Calendly Link */
.cta-calendly {
  display: inline-block;
  background-color: #097CF7;
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 2rem;
  transition: background-color 0.2s ease;
}

.cta-calendly:hover {
  background-color: #0860C4;
}

/* Large CTA Button */
.cta-primary-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.text-link {
  color: var(--accent);
  text-decoration: none;
}

.comparison-note {
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
}

.fda-expectations {
  color: var(--gray);
}

/* Spacing Utilities */
.mt-4 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }

.text-center { text-align: center; }
.text-gray { color: var(--gray); }
.text-white { color: var(--white); }

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
  
  .nav-links {
    gap: 1.5rem;
    font-size: 0.85rem;
  }
  
  .hero {
    flex-direction: column;
    padding: 4rem 0;
    margin-top: 3rem;
    gap: 2rem;
  }
  
  .hero h1 { font-size: 2rem; }
  
  .two-column {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .system-items {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .buy-paths {
    grid-template-columns: 1fr;
  }
  
  .capacity-metrics {
    gap: 1.5rem;
  }
  
  .hero-ctas {
    flex-direction: column;
  }
  
  .cta-primary, .cta-secondary {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  nav {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .nav-links {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }
  
  .system-items {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
}