/* Cloud Health Office - Sentinel Theme CSS */
/* Absolute black backgrounds, holographic circuit veins, neon cyan/green accents */

/* === ROOT VARIABLES === */
:root {
  /* Colors - Sentinel Brand Identity */
  --absolute-black: #000000;
  --dark-gray: #0a0a0a;
  --medium-gray: #808080;
  --light-gray: #b0b0b0;
  --neon-cyan: #00ffff;
  --neon-green: #00ff88;
  --cyan-glow: rgba(0, 255, 255, 0.8);
  --green-glow: rgba(0, 255, 136, 0.8);
  
  /* Typography */
  --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* === BASE STYLES === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--absolute-black);
  color: var(--light-gray);
  font-family: var(--font-family);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: var(--font-weight-bold);
  color: var(--neon-cyan);
  text-shadow: 0 0 20px var(--cyan-glow);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.5rem;
  letter-spacing: 1px;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.75rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: 1.5rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

h5 {
  font-size: 1.25rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

h6 {
  font-size: 1.1rem;
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--cyan-glow);
}

a:focus {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 4px;
}

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

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

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

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

/* === HOLOGRAPHIC CIRCUIT VEINS === */
.circuit-veins {
  background-image: 
    linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* === GLOW EFFECTS === */
.glow {
  color: var(--neon-cyan);
  text-shadow: 0 0 20px var(--cyan-glow);
}

.glow-green {
  color: var(--neon-green);
  text-shadow: 0 0 20px var(--green-glow);
}

.glow:hover,
.glow-green:hover {
  text-shadow: 0 0 30px var(--cyan-glow);
}

/* === BUTTONS === */
.button, .btn {
  display: inline-block;
  background: var(--neon-cyan);
  color: var(--absolute-black);
  padding: 16px 40px;
  font-size: 1.2rem;
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  border-radius: var(--radius-md);
  margin: var(--spacing-md) var(--spacing-sm);
  border: 2px solid var(--neon-cyan);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.button:hover, .btn:hover {
  background: var(--absolute-black);
  color: var(--neon-cyan);
  box-shadow: 0 0 30px var(--cyan-glow);
  transform: translateY(-2px);
}

.button:focus, .btn:focus {
  outline: 3px solid var(--neon-cyan);
  outline-offset: 4px;
}

.button-secondary {
  background: transparent;
  color: var(--neon-cyan);
  border: 2px solid var(--neon-cyan);
}

.button-secondary:hover {
  background: var(--neon-cyan);
  color: var(--absolute-black);
}

.button-green {
  background: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}

.button-green:hover {
  background: var(--absolute-black);
  color: var(--neon-green);
  box-shadow: 0 0 30px var(--green-glow);
}

/* === CARDS === */
.card {
  background: var(--dark-gray);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.card:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
  transform: translateY(-4px);
}

.card h3 {
  margin-top: 0;
}

/* === HERO SECTION === */
.hero {
  background: var(--absolute-black);
  text-align: center;
  padding: var(--spacing-xl) 0;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero img {
  max-width: 90%;
  height: auto;
  margin: var(--spacing-lg) 0;
}

.hero h1 {
  font-size: 4rem;
  margin: var(--spacing-md) 0;
}

.hero p {
  font-size: 1.5rem;
  opacity: 0.9;
}

.tagline {
  font-style: italic;
  color: var(--neon-green);
  font-size: 1.3rem;
  margin: var(--spacing-md) 0;
}

/* === NAVIGATION === */
nav {
  background: var(--dark-gray);
  border-bottom: 2px solid var(--neon-cyan);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

nav li {
  margin: 0;
}

nav a {
  color: var(--light-gray);
  font-weight: var(--font-weight-bold);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

nav a:hover {
  color: var(--neon-cyan);
  background: rgba(0, 255, 255, 0.1);
  text-shadow: 0 0 10px var(--cyan-glow);
}

nav a:focus {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* === FEATURES GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.feature-item {
  background: var(--dark-gray);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all 0.3s ease;
}

.feature-item:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
  transform: translateY(-4px);
}

.feature-item h3 {
  margin-top: var(--spacing-sm);
}

/* === FOOTER === */
footer {
  background: var(--dark-gray);
  border-top: 2px solid var(--neon-cyan);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg) 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--medium-gray);
}

footer a {
  color: var(--medium-gray);
}

footer a:hover {
  color: var(--neon-cyan);
}

/* === LISTS === */
ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

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

/* === BLOCKQUOTES === */
blockquote {
  border-left: 4px solid var(--neon-cyan);
  padding-left: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  font-style: italic;
  color: var(--light-gray);
}

/* === CODE === */
code {
  background: var(--dark-gray);
  color: var(--neon-green);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

pre {
  background: var(--dark-gray);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

pre code {
  background: none;
  padding: 0;
}

/* === TABLES === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background: var(--dark-gray);
}

th, td {
  padding: var(--spacing-sm);
  text-align: left;
  border: 1px solid var(--neon-cyan);
}

th {
  background: rgba(0, 255, 255, 0.1);
  color: var(--neon-cyan);
  font-weight: var(--font-weight-bold);
}

tr:hover {
  background: rgba(0, 255, 255, 0.05);
}

/* === IMAGES === */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

figure {
  margin: var(--spacing-lg) 0;
  text-align: center;
}

figcaption {
  color: var(--medium-gray);
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
  font-style: italic;
}

/* === HORIZONTAL RULE === */
hr {
  border: none;
  border-top: 2px solid var(--neon-cyan);
  margin: var(--spacing-xl) 0;
  opacity: 0.3;
}

/* === ASSESSMENT SPECIFIC STYLES === */
.assessment-header {
  text-align: center;
  padding: var(--spacing-xl) 0;
  border-bottom: 2px solid var(--neon-cyan);
  margin-bottom: var(--spacing-xl);
}

.assessment-section {
  margin-bottom: var(--spacing-xl);
}

.comparison-table {
  background: var(--dark-gray);
  border: 2px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--spacing-lg) 0;
}

.cta-section {
  background: var(--dark-gray);
  border: 2px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  margin: var(--spacing-xl) 0;
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
}

.cta-section h2 {
  margin-top: 0;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.2rem;
  }
  
  .button, .btn {
    padding: 12px 30px;
    font-size: 1rem;
    margin: var(--spacing-sm) 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .container, .container-narrow {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 3px solid var(--neon-cyan);
  outline-offset: 3px;
}

/* Skip to main content link */
.skip-to-main {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: var(--spacing-sm);
  background: var(--neon-cyan);
  color: var(--absolute-black);
  font-weight: var(--font-weight-bold);
}

.skip-to-main:focus {
  left: 50%;
  transform: translateX(-50%);
  top: var(--spacing-sm);
}

/* === PRINT STYLES === */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .button, .btn, nav, footer {
    display: none;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}