/* ===== Tokens ===== */
:root {
  --paper: #FAF6EF;
  --surface: #FFFFFF;
  --ink: #1F2937;
  --ink-soft: #4B5563;
  --terracotta: #B45F3C;
  --sage: #5B7B6F;
  --taupe: #8B7355;
  --border: rgba(139, 115, 85, 0.25);
  --border-strong: rgba(139, 115, 85, 0.45);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --max-width: 920px;
  --edge: 24px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

ul { list-style: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===== Drafting-paper ruled margins ===== */
.ruler-margin {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 1px;
  background: repeating-linear-gradient(
    to bottom,
    var(--border) 0,
    var(--border) 1px,
    transparent 1px,
    transparent 32px
  );
  z-index: 1;
  pointer-events: none;
  display: none;
}
@media (min-width: 1200px) {
  .ruler-margin { display: block; }
  .ruler-left { left: calc(50% - 620px); }
  .ruler-right { right: calc(50% - 620px); }
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 246, 239, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px var(--edge);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--terracotta);
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.15s ease;
  position: relative;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--terracotta);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  display: block;
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-links.open { max-height: 400px; }
  .nav-links a {
    padding: 14px var(--edge);
    border-top: 1px solid var(--border);
  }
  .nav-toggle { display: flex; }
}

/* ===== Hero ===== */
.hero {
  padding: 88px var(--edge) 64px;
  text-align: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 20px;
}

.hero-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.dimension-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 32px auto;
  max-width: 340px;
}
.dimension-line::before,
.dimension-line::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--taupe);
}
.tick {
  width: 1px;
  height: 10px;
  background: var(--taupe);
}

.hero-tagline {
  max-width: 480px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--terracotta);
  color: var(--paper);
}
.btn-primary:hover { background: #9c4f31; }

.btn-secondary {
  border-color: var(--border-strong);
  color: var(--ink);
}
.btn-secondary:hover { border-color: var(--terracotta); color: var(--terracotta); }

/* ===== Sections ===== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 72px var(--edge);
  border-top: 1px solid var(--border);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--sage);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2rem;
  margin-bottom: 40px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
}

.about-text h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.9rem;
  margin-bottom: 20px;
}

.about-text p { margin-bottom: 14px; color: var(--ink-soft); }

.about-facts {
  border-left: 1px solid var(--border);
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-self: start;
}

.fact-row { display: flex; flex-direction: column; gap: 2px; }

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--taupe);
}

.fact-value { font-weight: 500; }

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-facts { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 20px; }
}

/* ===== Projects ===== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.project-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.project-tag-row { margin-bottom: 14px; }

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
}
.project-tag-civil { background: rgba(91, 123, 111, 0.14); color: var(--sage); }
.project-tag-software { background: rgba(180, 95, 60, 0.12); color: var(--terracotta); }

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.project-card p { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 16px; }

.spec-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.spec-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--taupe);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 3px;
}

@media (max-width: 720px) {
  .project-grid { grid-template-columns: 1fr; }
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.skill-column h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--terracotta);
}

.skill-list { display: flex; flex-direction: column; gap: 10px; }
.skill-list li {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

@media (max-width: 720px) {
  .skills-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ===== Certificates ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.cert-card {
  border: 1px dashed var(--border-strong);
  border-radius: 6px;
  padding: 22px;
}
.cert-card h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 6px; }
.cert-card p { font-size: 0.85rem; color: var(--ink-soft); }

@media (max-width: 720px) {
  .cert-grid { grid-template-columns: 1fr; }
}

/* ===== Blog ===== */
.blog-list { display: flex; flex-direction: column; }

.blog-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
}
.blog-item:first-child { padding-top: 0; }

.blog-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--taupe);
}

.blog-item h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.blog-item p { color: var(--ink-soft); font-size: 0.92rem; }

@media (max-width: 720px) {
  .blog-item { grid-template-columns: 1fr; gap: 6px; }
}

/* ===== Resume / Contact ===== */
.resume-block, .contact-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 36px;
}

.resume-block p, .contact-block p { color: var(--ink-soft); margin-bottom: 20px; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-link {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--terracotta);
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}
.contact-link:hover { border-color: var(--terracotta); }

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 40px var(--edge) 60px;
  font-size: 0.82rem;
  color: var(--taupe);
}

/* ===== Placeholder marker ===== */
.placeholder-text {
  color: var(--taupe);
  font-style: italic;
  position: relative;
}