/**
 * SYMS OS Edge - Marketing Website Styles
 * Using eduSYMS brand colors and design tokens
 */

/* ===========================
   CSS Variables (Design Tokens)
   =========================== */
:root {
  /* Brand Colors */
  --color-sushi: #91c13f;
  --color-sushi-medium: #6c9135;
  --color-sushi-light: #7ca438;
  --color-black-olive: #1c240f;
  --color-thatch-green: #3a4c1b;
  --color-marshland: #070a06;
  --color-crete: #597728;
  
  /* Semantic Colors */
  --color-primary: var(--color-sushi);
  --color-primary-light: var(--color-sushi-light);
  --color-primary-dark: var(--color-sushi-medium);
  --color-accent: var(--color-crete);
  
  /* Background Colors */
  --color-bg-light: #ffffff;
  --color-bg-default: #f8faf5;
  --color-bg-dark: var(--color-marshland);
  --color-bg-darker: var(--color-black-olive);
  
  /* Text Colors */
  --color-text-primary: var(--color-black-olive);
  --color-text-secondary: var(--color-thatch-green);
  --color-text-muted: var(--color-crete);
  --color-text-light: #ffffff;
  
  /* Border Colors */
  --color-border-light: #e5f0d8;
  --color-border-default: #c9e0a8;
  --color-border-dark: var(--color-crete);
  
  /* Glassmorphism */
  --glass-bg: rgba(145, 193, 63, 0.1);
  --glass-bg-dark: rgba(28, 36, 15, 0.3);
  --glass-border: rgba(145, 193, 63, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(89, 119, 40, 0.37);
  
  /* Typography */
  --font-sans: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ===========================
   Base Styles
   =========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background-color: var(--color-bg-default);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

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

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

code {
  font-family: var(--font-mono);
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.code-block {
  display: block;
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--spacing-md);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  line-height: 1.5;
  overflow-x: auto;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(145, 193, 63, 0.3);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-dark);
}

.btn-outline:hover {
  background: var(--color-text-primary);
  color: var(--color-text-light);
  border-color: var(--color-text-primary);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
  background: var(--color-bg-darker);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.nav-brand .logo {
  height: 32px;
  width: auto;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-light);
}

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

.nav-menu a {
  color: var(--color-text-light);
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-light);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-darker);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
}

/* ===========================
   Hero Section
   =========================== */
.hero {
  background: linear-gradient(135deg, var(--color-thatch-green) 0%, var(--color-marshland) 100%);
  color: var(--color-text-light);
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-title {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.device-mockup {
  background: var(--glass-bg-dark);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-md);
  backdrop-filter: blur(10px);
}

.mockup-screen {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

@media (max-width: 968px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-cta {
    flex-direction: column;
  }
}

/* ===========================
   Features Section
   =========================== */
.features {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-light);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.feature-card {
  padding: var(--spacing-lg);
  border-radius: 16px;
  transition: transform var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.feature-tech {
  display: block;
  font-size: 0.875rem;
  color: var(--color-primary-dark);
  font-weight: 600;
}

.cta-block {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* ===========================
   Comparison Section
   =========================== */
.comparison {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-default);
}

.comparison-table {
  overflow-x: auto;
  margin-top: var(--spacing-xl);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-light);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.comparison-table th {
  background: var(--color-bg-darker);
  color: var(--color-text-light);
  font-weight: 600;
}

.comparison-table .highlight-col {
  background: var(--glass-bg);
  font-weight: 600;
  color: var(--color-primary-dark);
}

.comparison-table tbody tr:hover {
  background: var(--color-bg-default);
}

/* ===========================
   Use Cases Section
   =========================== */
.use-cases {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-light);
}

.use-case-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.use-case-card {
  background: var(--color-bg-light);
  border: 2px solid var(--color-border-light);
  border-radius: 16px;
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.use-case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary);
}

.use-case-image {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
}

.use-case-results {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  flex-wrap: wrap;
}

.result-badge {
  background: var(--color-primary);
  color: var(--color-text-light);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.link-arrow {
  color: var(--color-primary);
  font-weight: 600;
  transition: transform var(--transition-fast);
  display: inline-block;
}

.link-arrow:hover {
  transform: translateX(4px);
}

/* ===========================
   ROI Calculator Section
   =========================== */
.roi-calculator {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-default);
}

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

.roi-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.roi-option {
  background: var(--color-bg-light);
  border-radius: 16px;
  padding: var(--spacing-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.roi-option.traditional {
  border: 2px solid #dc2626;
}

.roi-option.syms {
  border: 2px solid var(--color-primary);
}

.roi-option h3 {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border-light);
}

.cost-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cost-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
}

.cost {
  font-weight: 600;
  color: var(--color-text-primary);
}

.cost-total {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-sm);
  border-top: 2px solid var(--color-border-dark);
  font-size: 1.125rem;
}

.cost-total.success {
  color: var(--color-primary-dark);
}

.cost-value {
  color: var(--color-primary-dark);
}

.roi-arrow {
  font-size: 3rem;
  color: var(--color-text-muted);
  text-align: center;
}

.roi-result {
  text-align: center;
}

.savings-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-light);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: 50px;
  box-shadow: 0 8px 24px rgba(145, 193, 63, 0.3);
}

.savings-amount {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.savings-percent {
  display: block;
  font-size: 1.125rem;
  opacity: 0.9;
}

@media (max-width: 968px) {
  .roi-comparison {
    grid-template-columns: 1fr;
  }
  
  .roi-arrow {
    transform: rotate(90deg);
  }
}

/* ===========================
   Final CTA Section
   =========================== */
.final-cta {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-thatch-green) 0%, var(--color-marshland) 100%);
  color: var(--color-text-light);
  text-align: center;
}

.final-cta h2 {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.final-cta p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.cta-note {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--color-bg-darker);
  color: var(--color-text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-col h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: var(--spacing-xs);
}

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

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* ===========================
   Download Page Specific
   =========================== */
.download-hero {
  background: linear-gradient(135deg, var(--color-thatch-green) 0%, var(--color-marshland) 100%);
  color: var(--color-text-light);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.download-hero h1 {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.version-info {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xs);
}

.platform-detected {
  color: var(--color-primary);
  font-weight: 600;
}

.recommended-download {
  padding: var(--spacing-xl) 0;
  background: var(--color-bg-default);
}

.download-card {
  background: var(--color-bg-light);
  border: 2px solid var(--color-border-light);
  border-radius: 16px;
  padding: var(--spacing-lg);
  position: relative;
}

.download-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(145, 193, 63, 0.2);
}

.badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-text-light);
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.badge-current {
  background: var(--color-primary);
  color: var(--color-text-light);
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  margin-left: var(--spacing-xs);
}

.platform-icon {
  font-size: 4rem;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.download-card h2 {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.download-card > p {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.download-details {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
  flex-wrap: wrap;
}

.detail-item {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.download-card .btn {
  display: block;
  margin: var(--spacing-sm) auto;
  max-width: 300px;
}

.all-downloads {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-light);
}

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

.platform-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border-light);
}

.platform-header .platform-icon {
  font-size: 3rem;
  margin: 0;
}

.platform-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.download-options {
  display: grid;
  gap: var(--spacing-md);
}

.download-option {
  padding: var(--spacing-md);
  background: var(--color-bg-default);
  border-radius: 12px;
  border: 1px solid var(--color-border-light);
}

.download-option h4 {
  margin-bottom: var(--spacing-xs);
}

.download-option p {
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

.download-meta {
  display: flex;
  gap: var(--spacing-md);
  margin: var(--spacing-sm) 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.install-instructions {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.install-instructions summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.install-instructions ol {
  margin-left: var(--spacing-md);
  color: var(--color-text-secondary);
}

.install-instructions li {
  margin-bottom: var(--spacing-xs);
}

.system-requirements,
.version-history,
.download-support {
  padding: var(--spacing-2xl) 0;
}

.system-requirements {
  background: var(--color-bg-default);
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.requirement-card {
  background: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--color-border-light);
}

.requirement-card.featured {
  border-color: var(--color-primary);
}

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

.requirement-card li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text-secondary);
}

.version-list {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.version-item {
  background: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--color-border-light);
}

.version-item.current {
  border-color: var(--color-primary);
}

.version-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.version-date {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.support-card {
  background: var(--color-bg-default);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--color-border-light);
  text-align: center;
  transition: all var(--transition-base);
}

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

.support-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* ===========================
   Utility Classes
   =========================== */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}