/* spatialcompute3d.com Stylesheet */
/* Color Palette: 60-30-10 Rule */
/* Rich Blue #0c5488 (60%), White #ffffff (30%), Royal Purple #880c54 (10%) */

:root {
  --color-primary: #0c5488;
  --color-primary-dark: #093d66;
  --color-primary-light: #1a6ba3;
  --color-secondary: #ffffff;
  --color-accent: #880c54;
  --color-accent-dark: #6a0942;
  --color-accent-light: #a31566;
  --color-background: #ffffff;
  --color-background-alt: #f8f9fa;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #e0e0e0;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Skip Navigation */
.skip-nav {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1rem;
  z-index: 1000;
  transition: top 0.3s;
}

.skip-nav:focus {
  top: 0;
}

/* Header */
.header {
  background-color: var(--color-primary);
  color: white;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
}

.logo-tagline {
  font-size: 0.75rem;
  opacity: 0.9;
  font-style: italic;
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-menu a {
  color: white;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a:focus::after {
  width: 100%;
}

.nav-menu a:hover {
  color: white;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: 5rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-tagline {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.hero-description {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-accent);
  color: white;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-accent-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: white;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover,
.btn-outline:focus {
  background-color: var(--color-primary);
  color: white;
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-alt {
  background-color: var(--color-background-alt);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: white;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* Pricing Card */
.pricing-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: 3rem;
  text-align: center;
  max-width: 400px;
  margin: 0 auto;
  border: 2px solid var(--color-primary);
}

.pricing-card h3 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

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

.pricing-period {
  font-size: 1rem;
  color: var(--color-text-light);
}

.pricing-features {
  margin: 2rem 0;
  text-align: left;
}

.pricing-features li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: bold;
}

/* Resource Links */
.resource-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.resource-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: white;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.resource-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.resource-link-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
}

.resource-link h4 {
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.resource-link p {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Table Styles */
.table-container {
  overflow-x: auto;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

tr:hover {
  background-color: var(--color-background-alt);
}

td a {
  color: var(--color-accent);
  font-weight: 500;
}

td a:hover {
  text-decoration: underline;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
  font-family: var(--font-body);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(12, 84, 136, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
}

.form-success {
  background-color: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
  display: none;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  background: var(--color-primary);
  color: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
}

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

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-info-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: white;
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: white;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  padding: 0.375rem 0;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.9;
}

/* About Page */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--border-radius);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
}

/* Alert Boxes */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
}

.alert-success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.alert-error {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

/* Two Column Layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* Responsive */
@media (max-width: 968px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .mobile-menu-toggle {
    display: block;
  }

  .contact-grid,
  .about-content,
  .two-col {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 1.75rem;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 3rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-tagline {
    font-size: 1.25rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }

  .pricing-card {
    padding: 2rem;
  }

  .pricing-amount {
    font-size: 2.5rem;
  }

  .thirty-col {
    grid-template-columns: 1fr;
  }
}

/* Focus States for Accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Feature List with Sub-items */
.feature-list {
  list-style: none;
}

.feature-list > li {
  padding: 0.75rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.feature-list > li::before {
  content: '•';
  color: var(--color-accent);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.feature-list ul {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
}

.feature-list ul li {
  padding: 0.25rem 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.feature-list ul li::before {
  content: '○';
  color: var(--color-primary);
}