/* ==========================================================================
   Pathren Landing Page Styles
   Clean, modern design inspired by Linear and Stripe
   ========================================================================== */

/* CSS Variables */
:root {
  /* Brand Colors */
  --primary: #DC5A29;
  --primary-hover: #c44d22;
  --primary-light: rgba(220, 90, 41, 0.1);
  --primary-foreground: #ffffff;

  /* Light Mode */
  --background: #ffffff;
  --background-secondary: #f9fafb;
  --foreground: #1a1a1a;
  --foreground-muted: #6b7280;
  --border: #e5e7eb;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f0f0f;
    --background-secondary: #1a1a1a;
    --foreground: #f5f5f5;
    --foreground-muted: #a1a1aa;
    --border: #27272a;
    --card-bg: #18181b;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.4);
    --primary-light: rgba(220, 90, 41, 0.15);
  }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--foreground);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--background);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
}

@media (prefers-color-scheme: dark) {
  .header {
    background: rgba(15, 15, 15, 0.9);
  }
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo {
  height: 48px;
  width: auto;
}

@media (min-width: 768px) {
  .logo {
    height: 56px;
  }
}

/* Logo switching for dark mode */
.dark-logo {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .light-logo {
    display: none;
  }
  .dark-logo {
    display: block;
  }
}

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

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--foreground-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--foreground);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--primary-foreground);
}

.btn-secondary {
  background: transparent;
  color: var(--foreground);
  border-color: var(--border);
}

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

.btn-full {
  width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  position: relative;
  padding: calc(64px + var(--spacing-4xl)) 0 var(--spacing-4xl);
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

/* Animated Network Background */
.hero-animation {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
  opacity: 0.85;
  padding-top: 65px;
}

@media (prefers-color-scheme: dark) {
  .hero-animation {
    opacity: 0.75;
  }
}

.network-svg {
  width: 100%;
  max-width: 1000px;
  height: 100%;
}

@media (min-width: 768px) {
  .network-svg {
    max-width: 1400px;
  }
}

.network-line {
  stroke: var(--primary);
  stroke-width: 1.5;
  fill: none;
  opacity: 0.25;
}

.network-line-alt {
  stroke: var(--primary);
  stroke-width: 1;
  fill: none;
  opacity: 0.18;
}

/* Network nodes */
.node {
  opacity: 0.75;
}

.node-primary {
  fill: var(--primary);
  opacity: 0.9;
}

.node-violet { fill: #8b5cf6; }
.node-amber { fill: #f59e0b; }
.node-cyan { fill: #06b6d4; }
.node-emerald { fill: #10b981; }
.node-orange { fill: #f97316; }
.node-blue { fill: #3b82f6; }
.node-rose { fill: #f43f5e; }
.node-yellow { fill: #eab308; }

/* Animated pulses */
.pulse-emerald { fill: #34d399; }
.pulse-amber { fill: #fbbf24; }
.pulse-cyan { fill: #22d3ee; }
.pulse-orange { fill: #fb923c; }
.pulse-violet { fill: #a78bfa; }
.pulse-blue { fill: #60a5fa; }
.pulse-rose { fill: #fb7185; }
.pulse-yellow { fill: #facc15; }

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  text-align: center;
  margin: 0 auto;
  width: 100%;
}

/* Frosted glass text box */
.hero-text-box {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
  .hero-text-box {
    background: rgba(15, 15, 15, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  }
}

@media (min-width: 768px) {
  .hero-text-box {
    padding: var(--spacing-3xl);
  }
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.hero-title .highlight {
  color: var(--primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--foreground-muted);
  margin-bottom: var(--spacing-2xl);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

@media (min-width: 480px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features {
  padding: var(--spacing-4xl) 0;
  background: var(--background-secondary);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--foreground-muted);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

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

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  font-size: var(--font-size-base);
  color: var(--foreground-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  padding: var(--spacing-4xl) 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
}

@media (min-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

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

.contact-info .section-subtitle {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.contact-details {
  font-size: var(--font-size-base);
  color: var(--foreground-muted);
}

.contact-details a {
  color: var(--primary);
}

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--card-shadow);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--foreground);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--foreground);
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--foreground-muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-note {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
  text-align: center;
  margin-top: var(--spacing-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border);
  background: var(--background-secondary);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    text-align: left;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer-brand {
    align-items: flex-start;
  }
}

.footer-logo {
  height: 48px;
  width: auto;
}

@media (min-width: 768px) {
  .footer-logo {
    height: 56px;
  }
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
  max-width: 240px;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
}

.footer-links a:hover {
  color: var(--foreground);
}

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

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
}

/* ==========================================================================
   Animations
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.6s ease forwards;
}

.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.2s;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    animation: none;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* ==========================================================================
   Legal Pages (Privacy, Terms, Security)
   ========================================================================== */

.legal-page {
  padding: calc(64px + var(--spacing-xl)) 0 var(--spacing-md);
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.legal-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.last-updated {
  font-size: var(--font-size-sm);
  color: var(--foreground-muted);
}

/* Table of Contents */
.toc {
  background: var(--background-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.toc h2 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.toc ol {
  list-style: decimal;
  padding-left: var(--spacing-xl);
  margin: 0;
  font-size: var(--font-size-sm);
}

.toc li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
}

.toc a {
  color: var(--foreground);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Legal Content Sections */
.legal-content section {
  margin-bottom: var(--spacing-3xl);
}

.legal-content section:last-child {
  margin-bottom: 0;
}

/* Contact section on legal pages - constrain width and reduce spacing */
.contact.legal-contact {
  padding-top: var(--spacing-sm);
}

.contact.legal-contact .contact-content {
  max-width: 800px;
  margin: 0 auto;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.contact.legal-contact .section-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.contact.legal-contact .section-subtitle {
  margin-bottom: var(--spacing-sm);
}

.contact.legal-contact .contact-details {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-md);
}

@media (min-width: 768px) {
  .contact.legal-contact .contact-content {
    grid-template-columns: 1fr 1fr;
  }
}

.legal-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  padding-top: var(--spacing-md);
  letter-spacing: -0.01em;
}

.legal-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-content p {
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  color: var(--foreground);
}

.legal-content ul,
.legal-content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.legal-content li {
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.legal-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  color: var(--primary-hover);
}

/* Contact Details */
.contact-details {
  background: var(--background-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.contact-details p {
  margin-bottom: var(--spacing-sm);
}

.contact-details p:last-child {
  margin-bottom: 0;
}

/* Highlight Box */
.highlight-box {
  background: var(--primary-light);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

/* Security Tables */
.security-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: var(--font-size-sm);
}

.security-table th,
.security-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.security-table th {
  font-weight: 600;
  background: var(--background-secondary);
}

.security-table tr:last-child td {
  border-bottom: none;
}

@media (prefers-color-scheme: dark) {
  .security-table th {
    background: var(--background-secondary);
  }
}

/* Print Styles for Legal Pages */
@media print {
  .header,
  .footer,
  .toc {
    display: none;
  }
  
  .legal-page {
    padding: 0;
  }
  
  .legal-content {
    max-width: none;
  }
  
  .legal-content h2 {
    page-break-after: avoid;
  }
  
  .legal-content section {
    page-break-inside: avoid;
  }
}