/* === Reset & Base === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0d1117;
  --bg-surface: #161b22;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #cc785c;
  --accent-hover: #e08a6a;
  --border: #21262d;
  --max-width: 720px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Header === */
.site-header {
  padding: 5rem 0 3rem;
  text-align: center;
}

.site-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.site-header .subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
}

.social-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.social-links a:hover {
  color: var(--accent);
}

.social-links a svg {
  width: 20px;
  height: 20px;
  vertical-align: middle;
  margin-right: 0.35rem;
  fill: currentColor;
}

/* === Sections === */
section {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

section p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

section p:last-child {
  margin-bottom: 0;
}

section strong {
  color: var(--text);
  font-weight: 600;
}

/* === Highlight text === */
.highlight {
  color: var(--accent);
}

/* === Subsections === */
.subsection {
  margin-top: 2rem;
}

.subsection h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.subsection ul {
  list-style: none;
  padding: 0;
}

.subsection ul li {
  color: var(--text-muted);
  padding: 0.3rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.subsection ul li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* === Beliefs === */
.beliefs-list {
  list-style: none;
  padding: 0;
}

.beliefs-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}

.beliefs-list li:last-child {
  border-bottom: none;
}

.beliefs-list li strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.25rem;
}

/* === Building Now items === */
.building-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.building-item {
  display: flex;
  gap: 1rem;
  align-items: baseline;
}

.building-item .label {
  color: var(--accent);
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.85rem;
  white-space: nowrap;
  min-width: 140px;
}

.building-item .desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* === Tech badges === */
.tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  transition: border-color 0.2s, color 0.2s;
}

.tech-badge:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* === Footer === */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer .social-links {
  margin-bottom: 1rem;
}

.site-footer .copyright {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* === Scroll fade-in animation === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

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

/* Stagger the animations per section */
section:nth-child(1) .fade-in { animation-delay: 0.1s; }
section:nth-child(2) .fade-in { animation-delay: 0.15s; }
section:nth-child(3) .fade-in { animation-delay: 0.2s; }
section:nth-child(4) .fade-in { animation-delay: 0.25s; }
section:nth-child(5) .fade-in { animation-delay: 0.3s; }
section:nth-child(6) .fade-in { animation-delay: 0.35s; }

/* Use IntersectionObserver-driven class for scroll-triggered fade */
.fade-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === Responsive === */
@media (max-width: 600px) {
  .site-header {
    padding: 3.5rem 0 2rem;
  }

  .site-header h1 {
    font-size: 2rem;
  }

  .site-header .subtitle {
    font-size: 0.9rem;
  }

  section {
    padding: 2rem 0;
  }

  section h2 {
    font-size: 1.25rem;
  }

  .building-item {
    flex-direction: column;
    gap: 0.2rem;
  }

  .building-item .label {
    min-width: unset;
  }
}