:root {
    --bg-color: #0a0a0a;
    --text-color: #eee;
    --accent-color: #ddd;
    --grey-color: #555;
    --light-grey: #888;
  }
  
  /* Reset & base */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  .fullscreen-header {
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    text-align: center;
    color: var(--text-color);
    user-select: none;
    font-weight: 700;
    letter-spacing: 0.15em;
    font-size: 4rem;
    font-family: 'Orbitron', monospace, 'Segoe UI', sans-serif;
    background: linear-gradient(45deg, #111 25%, #222 50%, #111 75%);
    animation: subtleGradient 20s linear infinite;
  }

  /* New subtle background pattern under image */
  .background-pattern {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background-image:
      radial-gradient(circle at 30% 30%, #222 2px, transparent 3px),
      radial-gradient(circle at 70% 70%, #222 2px, transparent 3px);
    background-size: 100px 100px;
    background-repeat: repeat;
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
  }
  
  .fullscreen-header .header-content {
    position: relative;
    z-index: 3;
    max-width: 90%;
  }
  
  .fullscreen-header h1 {
    font-size: 6rem;
    margin-bottom: 0.5rem;
    text-transform: none;
    text-shadow:
      0 0 10px #aaa,
      0 0 20px #999;
  }
  
  .fullscreen-header p {
    font-size: 1.4rem;
    letter-spacing: 0.1em;
    color: var(--light-grey);
    font-weight: 400;
    text-shadow: 0 0 5px #666;
  }

  .image-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
  }

  .image-container::before {
    content: '';
    position: absolute;
    width: 60%;
    height: auto;
    aspect-ratio: 1 / 1; /* Keep it square or adjust if needed */
    background-image: url('/static/logo.png'); /* use the correct image path */
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    filter: blur(30px) brightness(1.2);
    opacity: 0.3;
    z-index: 0;
    transform: scale(1.1); /* slightly larger than the main image */
  }

  .image-container img {
    width: 60%;
    height: auto;
    object-fit: contain;
    filter: none;
    user-select: none;
    pointer-events: none;
    border-radius: 12px; /* optional: rounded corners */
    background: transparent;
  }
  
  /* Navigation - sticky on top */
  nav {
    display: flex;
    justify-content: center;
    background: #111;
    border-bottom: 1px solid var(--grey-color);
    position: sticky;
    top: 0;
    z-index: 10;
  }
  
  /* Base nav */
nav {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  border-bottom: 1px solid var(--grey-color);
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 0.5rem 1rem;
}

nav a {
  color: var(--grey-color);
  margin: 0 1rem;
  text-decoration: none;
  font-weight: 600;
  font-family: 'Orbitron', monospace, 'Segoe UI', sans-serif;
  transition: color 0.3s;
  letter-spacing: 0.1em;
}

nav a:hover {
  color: var(--text-color);
  text-shadow: 0 0 8px var(--text-color);
}

/* Hide checkbox */
#menu-toggle {
  display: none;
}

/* Hamburger icon */
.menu-icon {
  display: none;
  font-size: 1.8rem;
  color: var(--text-color);
  cursor: pointer;
}

/* Mobile menu initially hidden */
.menu {
  display: flex;
}

/* Roadmap Grid */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
  width: 100%;
  max-width: 1100px;
}

.roadmap-card {
  background: #111;
  border: 1px solid var(--grey-color);
  border-radius: 12px;
  padding: 2rem 1rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.roadmap-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  font-family: 'Orbitron', monospace, sans-serif;
  color: var(--accent-color);
}

.roadmap-card p {
  font-size: 0.95rem;
  color: var(--light-grey);
  line-height: 1.4;
}

.roadmap-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 20px rgba(255,255,255,0.1);
}

/* Status coloring */
.roadmap-card.done {
  border-left: 4px solid #4caf50;
}
.roadmap-card.in-progress {
  border-left: 4px solid #ff9800;
}
.roadmap-card.upcoming {
  border-left: 4px solid #2196f3;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.5rem;
}

.cta-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: bold;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s, transform 0.2s;
  border: none;
  outline: none;
  cursor: pointer;
  white-space: nowrap;
}

.cta-btn i {
  font-size: 1.2rem;
}

/* GitHub button */
.github-btn {
  background: #eee;
  color: #000;
}

.github-btn:hover {
  background: #fff;
  transform: scale(1.05);
}

/* Google Play button */
.play-btn {
  background: #3ddc84;
  color: #000;
}

.play-btn:hover {
  background: #2ab870;
  transform: scale(1.05);
}


/* RESPONSIVE */
@media (max-width: 768px) {
  .roadmap-grid {
    grid-template-columns: 1fr; /* stack on mobile */
  }

  nav {
    justify-content: space-between;
  }

  .menu {
    display: none;
    flex-direction: column;
    background: #111;
    position: absolute;
    top: 60px;
    right: 10px;
    border: 1px solid var(--grey-color);
    border-radius: 8px;
    padding: 1rem;
  }

  #menu-toggle:checked + .menu-icon + .menu {
    display: flex;
  }

  .menu-icon {
    display: block;
  }

  nav a {
    margin: 0.5rem 0;
  }
}

  
  main {
    max-width: 900px;
    margin: 2rem auto 4rem;
    padding: 0 1rem;
  }

  section {
    scroll-snap-align: start;
    min-height: 100vh;
  }
  
  h2 {
    margin-top: 2rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 0.5rem;
    margin-bottom: 1rem;
    font-family: 'Orbitron', monospace, 'Segoe UI', sans-serif;
    font-weight: 700;
    letter-spacing: 0.15em;
    font-size: 2rem;
    color: var(--accent-color);
    text-transform: uppercase;
  }
  
  /* Animations */
@keyframes subtleGradient {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}
  
/* Snap Scrolling */
html, body {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
}

.section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  scroll-snap-align: start;
  padding: 2rem;
  text-align: center;
}

.section-image {
  max-width: 90%;
  height: auto;
  display: block;
  margin: 2rem auto;       
  border-radius: 12px;  
  box-shadow: 0 0 20px rgba(0,0,0,0.4); 
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* auto-fit rows */
  gap: 1.5rem;
  margin-top: 2rem;
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.grid-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  transition: transform 0.2s ease;
}

.wide-image {
  margin-top: 2rem;
  width: 50%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  transition: transform 0.2s ease;
}

.grid-image:hover {
  transform: scale(1.05);
}

/* Animations for fade/slide-in */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s ease-out, transform 1s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

#cta footer {
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 100%;
  text-align: center;

  /* Reset inherited fullscreen-header styles */
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
  font-weight: normal !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-size: 0.9rem !important;

  color: var(--grey-color);
  border-top: 1px solid var(--grey-color);
  padding-top: 1rem;
}

/* Desktop optimization */
@media (min-width: 1024px) {
  .section-image {
    max-width: 15%;   /* smaller on wide screens */
  }
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .fullscreen-header h1 {
    font-size: 2.5rem;
  }
  .fullscreen-header p {
    font-size: 1rem;
  }
  .image-container img {
    width: 80%;
  }
  .cta-btn {
    font-size: 1rem;
    padding: 0.6rem 1.2rem;
  }
  .section-image {
    max-width: 100%;
    margin: 1rem auto;
  }
}
@media (max-width: 480px) {
  .fullscreen-header h1 {
    font-size: 1.6rem; /* phone */
  }
  .cta-btn {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
  }
}