/* ========================================
   CSS CUSTOM PROPERTIES (Variables)
   Edit these to customize your theme
   ======================================== */

:root {
  /* Colors - Edit these to match your brand */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  
  --color-secondary: #0f172a;
  --color-secondary-light: #1e293b;
  
  --color-accent: #06b6d4;
  
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-text-dark: #0f172a;
  
  --color-background: #ffffff;
  --color-background-alt: #f8fafc;
  --color-background-dark: #0f172a;
  
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  
  /* 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;
  
  /* Container */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-padding: 1.5rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

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

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

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

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

/* ========================================
   LAYOUT
   ======================================== */

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

.container-narrow {
  max-width: var(--container-narrow);
}

.main-content {
  min-height: calc(100vh - 200px);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-dark);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
}

.lead {
  font-size: 1.25rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-dark);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-dark);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--color-text-dark);
  left: 0;
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-background);
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav-menu.is-active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-item {
    width: 100%;
    text-align: center;
  }
  
  .nav-link {
    display: block;
    padding: var(--spacing-md);
  }
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

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

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-text-dark) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

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

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

.btn-secondary:hover {
  background: var(--color-background-alt);
  border-color: var(--color-text-light);
  color: var(--color-text-dark);
}

/* ========================================
   SECTIONS
   ======================================== */

.section {
  padding: var(--spacing-3xl) 0;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.section-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 1.125rem;
}

/* ========================================
   CARDS & GRID
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ========================================
   MISSION STATEMENT
   ======================================== */

.mission-section {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  background: var(--color-secondary);
  color: white;
}

.mission-section .section-title {
  color: white;
}

.mission-text {
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto;
  opacity: 0.9;
}

/* ========================================
   PAGE HEADER
   ======================================== */

.page-header {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  background: var(--color-background-alt);
  text-align: center;
}

.page-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.page-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  padding: var(--spacing-3xl) 0;
}

/* ========================================
   BLOG
   ======================================== */

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

.blog-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
}

.blog-item:last-child {
  border-bottom: none;
}

.blog-item-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.blog-item-title a {
  color: var(--color-text-dark);
}

.blog-item-title a:hover {
  color: var(--color-primary);
}

.blog-item-meta {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.blog-item-excerpt {
  color: var(--color-text);
}

/* Post Styles */
.post-header {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  background: var(--color-background-alt);
}

.post-meta {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.post-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.post-excerpt {
  font-size: 1.25rem;
  color: var(--color-text-light);
}

.post-content {
  padding: var(--spacing-3xl) 0;
}

.post-content h2 {
  margin-top: var(--spacing-2xl);
}

.post-content h3 {
  margin-top: var(--spacing-xl);
}

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

.post-content li {
  margin-bottom: var(--spacing-sm);
}

.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-style: italic;
  color: var(--color-text-light);
}

.post-content code {
  background: var(--color-background-alt);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
}

.post-content pre {
  background: var(--color-secondary);
  color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-xl) 0;
}

.post-content pre code {
  background: transparent;
  padding: 0;
}

/* ========================================
   CAREERS
   ======================================== */

.job-listing {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-base);
}

.job-listing:hover {
  box-shadow: var(--shadow-md);
}

.job-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.job-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.job-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.job-description {
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

/* ========================================
   CONTACT FORM
   ======================================== */

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

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

.contact-info h3 {
  margin-bottom: var(--spacing-lg);
}

.contact-info ul {
  list-style: none;
}

.contact-info li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info .icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-background);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  background: var(--color-secondary);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

.footer-title {
  font-size: 1.5rem;
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-heading {
  font-size: 1rem;
  color: white;
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.footer-description {
  opacity: 0.8;
  line-height: 1.7;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-contact {
  list-style: none;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer-contact .icon {
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.8);
}

.footer-contact a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-bottom p {
  margin: 0;
  opacity: 0.6;
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background: var(--color-primary);
}

.social-links svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   UTILITIES
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .nav-toggle {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
}