/* ==========================================================================
   StrangeInfinity — Layout & Section Structures
   layout.css
   ========================================================================== */

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-16));
}

/* ── Sections ── */
section {
  position: relative;
  padding-block: var(--section-gap);
  overflow: hidden;
}

.section-header {
  margin-bottom: var(--space-16);
}

/* ── Canvas Background ── */
#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Navbar ── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  transition: var(--transition-normal);
}

#navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
  transition: var(--transition-fast);
}
.nav-logo:hover { color: var(--color-primary-light); }

.nav-logo img {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  object-fit: cover;
  box-shadow: var(--shadow-glow-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  position: relative;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after,
.nav-link.active::after { width: 60%; }
.nav-link.active { color: var(--color-primary-light); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: var(--glass-border);
  color: var(--text-secondary);
  font-size: var(--text-lg);
  cursor: pointer;
  transition: var(--transition-normal);
}
.theme-toggle:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow-primary);
}

/* Social icons in nav */
.nav-social {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.nav-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  color: var(--text-muted);
  transition: var(--transition-fast);
}
.nav-social a:hover { color: var(--color-primary-light); transform: translateY(-2px); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  padding: var(--space-1);
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-bottom: var(--glass-border);
  padding: var(--space-6) var(--space-6) var(--space-8);
  display: none;
  flex-direction: column;
  gap: var(--space-2);
  z-index: calc(var(--z-nav) - 1);
  transform: translateY(-10px);
  opacity: 0;
  transition: var(--transition-normal);
}
.mobile-menu.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
}
.mobile-menu .nav-link {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}
.mobile-menu .nav-link::after {
  display: none !important;
}
.mobile-menu .nav-link:hover,
.mobile-menu .nav-link:active {
  background: var(--bg-elevated);
  color: var(--text-primary);
}
.mobile-menu .nav-link.active {
  background: var(--gradient-primary);
  color: #ffffff !important;
  font-weight: 600;
}

/* ── Hero ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-height);
  padding-block: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-16));
  padding-block: var(--space-24);
}

.hero-text { /* left column */ }

.writer-showcase-grid,
.product-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
@media (max-width: 992px) {
  .writer-showcase-grid,
  .product-showcase-grid {
    grid-template-columns: 1fr;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(124, 58, 237, 0.12);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  backdrop-filter: blur(8px);
}

.hero-badge .badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: badgePulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(var(--text-4xl), 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-2);
}

.hero-title .brand-name {
  display: inline-block;
  padding-bottom: 0.18em;
  padding-top: 0.05em;
  padding-right: 0.05em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: var(--space-10);
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: var(--glass-border);
}

.hero-stat {}
.hero-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text-primary);
  display: block;
}
.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-orb {
  width: clamp(280px, 40vw, 480px);
  height: clamp(280px, 40vw, 480px);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%,
    rgba(168, 85, 247, 0.3) 0%,
    rgba(124, 58, 237, 0.15) 40%,
    rgba(6, 182, 212, 0.1) 70%,
    transparent 100%);
  border: 1px solid rgba(124, 58, 237, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: orbFloat 6s ease-in-out infinite;
  position: relative;
}

.hero-orb::before {
  content: '';
  position: absolute;
  inset: -30px;
  border-radius: 50%;
  border: 1px solid rgba(168, 85, 247, 0.1);
  animation: orbRingRotate 12s linear infinite;
}
.hero-orb::after {
  content: '';
  position: absolute;
  inset: -60px;
  border-radius: 50%;
  border: 1px solid rgba(6, 182, 212, 0.07);
  animation: orbRingRotate 20s linear infinite reverse;
}

.hero-orb-logo {
  width: 55%;
  height: 55%;
  object-fit: contain;
  border-radius: var(--radius-full);
  filter: drop-shadow(0 0 30px rgba(124, 58, 237, 0.5));
}

/* ── About ── */
#about { background: transparent; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* ── Projects / Products Grid ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-8);
}

/* ── Tech Stack ── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: var(--space-4);
}

/* ── GitHub Dashboard ── */
.github-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
}
.repos-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ── Timeline ── */
.timeline {
  position: relative;
  padding-left: var(--space-10);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--color-primary), var(--color-secondary), transparent);
}

/* ── Cosmic Widgets ── */
.widgets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.social-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

/* ── Footer ── */
footer {
  background: var(--bg-surface);
  border-top: var(--glass-border);
  padding-block: var(--space-12);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--space-6);
  border-top: var(--glass-border);
  text-align: center;
}

/* ── Back to top ── */
#back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  cursor: pointer;
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-glow-primary), var(--shadow-md);
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition-bounce);
}
#back-to-top.visible {
  transform: translateY(0);
  opacity: 1;
}
#back-to-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-4px);
}

/* ── Keyboard Shortcuts Panel ── */
#shortcuts-panel {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-width: 280px;
  z-index: var(--z-overlay);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}
#shortcuts-panel.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .hero-description { margin-inline: auto; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .about-grid { grid-template-columns: 1fr; }
  .github-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-gap: var(--space-20); }
  .nav-links { display: none; }
  .nav-social { display: none; }
  .hamburger { display: flex; }
  .projects-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .social-links-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
  .timeline { padding-left: var(--space-6); }
}

@media (max-width: 480px) {
  .hero-title { font-size: clamp(var(--text-3xl), 8vw, var(--text-5xl)); }
  .stats-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .widgets-grid { grid-template-columns: 1fr; }
}

/* ── Ensure all section content is above canvas ── */
section > .container,
section > * {
  position: relative;
  z-index: var(--z-base);
}

/* ── Mobile GPU Scroll Performance Optimization ── */
@media (max-width: 768px) {
  .glass-card,
  .project-card,
  .product-card,
  .tech-card,
  .social-card,
  .stat-card,
  .value-card,
  #navbar.scrolled,
  .mobile-menu {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    background: var(--bg-surface) !important;
    box-shadow: var(--shadow-sm) !important;
  }
}