/* LAYOUT CSS - Lil.Wide.Codes V3 | Purpose: Structure, Spacing, Navigation Overlay & Theme Toggles */

/* Section Spacing */
section {
  padding-block: var(--space-xl);
  position: relative;
}

section + section {
  border-top: 1px solid var(--color-border);
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 900;
  background: rgba(6, 8, 14, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
}

body.light-theme .site-header {
  background: rgba(235, 238, 243, 0.7);
}

.site-header.scrolled {
  background: rgba(6, 8, 14, 0.9);
  padding-block: var(--space-xs);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

body.light-theme .site-header.scrolled {
  background: rgba(235, 238, 243, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

/* Logo / Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand a {
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-text-primary) 60%, var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent-cyan);
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.9);
    opacity: 0.6;
    box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.4);
  }
  70% {
    transform: scale(1);
    opacity: 1;
    box-shadow: 0 0 0 8px rgba(0, 242, 254, 0);
  }
  100% {
    transform: scale(0.9);
    opacity: 0.6;
    box-shadow: 0 0 0 0 rgba(0, 242, 254, 0);
  }
}

/* Desktop Nav Link List */
.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
  position: relative;
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text-primary);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-accent-cyan);
  transition: var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 80%;
}

.nav-links a.active {
  color: var(--color-text-primary);
}

/* Header actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
}

body.light-theme .theme-toggle-btn:hover {
  background: rgba(0, 0, 0, 0.04);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-btn:hover svg {
  transform: rotate(45deg);
}

.theme-toggle-btn .sun-icon {
  display: none;
}

body.light-theme .theme-toggle-btn .moon-icon {
  display: none;
}

body.light-theme .theme-toggle-btn .sun-icon {
  display: block;
}

/* Morphing Hamburger Menu Toggle */
.menu-toggle {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: var(--transition-fast);
  position: relative;
  z-index: 999;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-cyan);
}

body.light-theme .menu-toggle:hover {
  background: rgba(0, 0, 0, 0.04);
}

.menu-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.menu-toggle .line {
  transition: transform 0.3s ease, opacity 0.2s ease;
  transform-origin: center;
}

.menu-toggle.open .line-top {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle.open .line-middle {
  opacity: 0;
}

.menu-toggle.open .line-bottom {
  transform: translateY(-6px) rotate(-45deg);
}

/* Fullscreen Navigation Overlay */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(6, 8, 14, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 950;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-theme .nav-overlay {
  background: rgba(235, 238, 243, 0.98);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.nav-overlay-content {
  width: 90%;
  max-width: var(--max-width);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  transform: translateY(40px);
  transition: transform 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.nav-overlay.open .nav-overlay-content {
  transform: translateY(0);
}

.overlay-group {
  display: flex;
  flex-direction: column;
}

.overlay-group h3 {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: var(--space-sm);
}

.overlay-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.overlay-group a {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-secondary);
  display: inline-block;
  padding-block: 0.2rem;
  transition: var(--transition-fast);
}

.overlay-group a:hover {
  color: var(--color-accent-cyan);
  transform: translateX(6px);
}

/* Page Layout Structure */
main {
  padding-top: 100px;
}

/* Grids and Flexboxes */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.flex-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Footer layout */
.site-footer {
  padding-block: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-top: var(--space-xxl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-logo {
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

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

/* Scroll reveal classes */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile responsive layout */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .site-header {
    height: 60px;
  }
  
  .nav {
    height: 60px;
  }
  
  main {
    padding-top: 80px;
  }
  
  .nav-overlay-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding: var(--space-lg);
    max-height: 80vh;
    overflow-y: auto;
  }
  
  .overlay-group h3 {
    margin-bottom: var(--space-xs);
  }
  
  .overlay-group a {
    font-size: var(--text-md);
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }
  
  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
  }
}