/* ===================================================
   NEURAJ ORGANIZATION — INSTITUTIONAL WEBSITE STYLES
   Version: 1.0
   Brand Compliance: brand_credits.md v1.0
   =================================================== */

/* ===== CSS RESET & GLOBAL ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Brand Colors (Monochrome Precision) */
  --color-bg-primary: #0D0D0D;
  --color-bg-secondary: #1A1A1A;
  --color-text-primary: #E6E6E6;
  --color-text-secondary: #BFBFBF;
  --color-text-muted: #999999;
  --color-accent: #00B0F0;
  --color-border: #333333;
  
  /* Typography */
  --font-primary: "Space Grotesk", sans-serif;
  --font-secondary: "Montserrat", sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Transitions */
  --transition-smooth: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== ACCESSIBILITY ===== */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  font-weight: 600;
  z-index: 100;
  transition: var(--transition-smooth);
}

.skip-to-content:focus {
  top: 0;
}

/* Focus Indicators (WCAG Compliance) */
a:focus,
button:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ===== HEADER / NAV ===== */
header {
  background: linear-gradient(180deg, rgba(13, 13, 13, 0.95) 0%, rgba(26, 26, 26, 0.9) 100%);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 50;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  gap: var(--spacing-sm);
}

.logo {
  width: 130px;
  height: auto;
  transition: var(--transition-smooth);
}

.logo:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}

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

nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.5px;
  transition: var(--transition-smooth);
  position: relative;
  padding: 0.25rem 0;
}

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

nav a:hover,
nav a:focus {
  color: var(--color-text-primary);
}

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

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  background-image: background-image: 
  linear-gradient(135deg, rgba(13, 13, 13, 0.85) 0%, rgba(26, 26, 26, 0.75) 100%),
  url('../assets/images/banner_bg.png');  /* Note: Added ../ */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-blend-mode: overlay;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(13, 13, 13, 0.85) 0%, rgba(26, 26, 26, 0.75) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
  color: var(--color-text-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-secondary);
}

.soon {
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: var(--spacing-md);
}

/* ===== MAIN CONTENT SECTIONS ===== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.content-block {
  padding: var(--spacing-lg) 0;
  max-width: 900px;
  margin: 0 auto;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
  text-align: center;
}

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.7;
  text-align: center;
}

.emphasis {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 1.15rem;
  margin-top: var(--spacing-md);
}

/* ===== PROJECTS GRID ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(26, 26, 26, 0.7) 100%);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: var(--transition-smooth);
  text-align: left;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 8px 20px rgba(0, 176, 240, 0.15);
}

.project-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.5px;
}

.project-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  text-align: left;
  margin: 0;
}

/* ===== CONTACT SECTION ===== */
.contact-email {
  margin-top: var(--spacing-md);
}

.contact-email a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.15rem;
  transition: var(--transition-smooth);
}

.contact-email a:hover,
.contact-email a:focus {
  color: var(--color-text-primary);
  text-decoration: underline;
}

/* ===== FOOTER ===== */
footer {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-tagline {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin: var(--spacing-md) 0;
}

.footer-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-nav a:hover,
.footer-nav a:focus {
  color: var(--color-text-primary);
  text-decoration: underline;
}

.footer-nav .separator {
  color: var(--color-border);
}

.footer-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--spacing-md);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet */
@media (max-width: 768px) {
  .header-container {
    padding: 0 var(--spacing-sm);
  }
  
  nav ul {
    gap: var(--spacing-sm);
  }
  
  .hero {
    min-height: 60vh;
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .content-block {
    padding: var(--spacing-md) 0;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .logo {
    width: 100px;
  }
  
  nav a {
    font-size: 0.9rem;
  }
  
  .hero {
    min-height: 50vh;
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 1.5rem;
    line-height: 1.4;
  }
  
  .hero-subtitle {
    font-size: 0.95rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .project-card {
    padding: var(--spacing-sm);
  }
  
  .footer-nav {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  .footer-nav .separator {
    display: none;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .skip-to-content,
  nav,
  footer {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}