/* ============ TOKENS ============ */
:root {
  --bg: #f7f7f4;
  --surface: #ffffff;
  --ink: #17201a;
  --ink-soft: #5b6660;
  --line: #e2e3dd;
  --accent: #35533f;
  --accent-soft: #e3ebe3;
  --accent-2: #8a6a3f;

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

  --max: 1080px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 4px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

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

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

/* ============ NAV ============ */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 247, 244, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-links a.nav-cta {
  color: var(--accent);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ============ HERO ============ */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(64px, 12vw, 140px) var(--pad) clamp(48px, 8vw, 96px);
  position: relative;
  overflow: hidden;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 9vw, 5.4rem);
  line-height: 0.98;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.hero-title span { color: var(--accent); font-style: italic; font-weight: 500; }

.hero-role {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--ink);
  max-width: 640px;
  margin: 0 0 18px;
  font-weight: 500;
}

.hero-desc {
  max-width: 560px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 26px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { transform: translateY(-2px); background: #2a4232; }

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.hero-links {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.hero-links a { border-bottom: 1px solid transparent; }
.hero-links a:hover { color: var(--accent); border-color: var(--accent); }
.hero-links .dot { margin: 0 10px; color: var(--line); }

.hero-mark {
  position: absolute;
  right: var(--pad);
  bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  opacity: 0.5;
  letter-spacing: 0.06em;
  display: none;
}

@media (min-width: 900px) { .hero-mark { display: block; } }

/* ============ SECTION SHELL ============ */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 8vw, 88px) var(--pad);
  border-top: 1px solid var(--line);
}

.section-head {
  margin-bottom: 40px;
}

.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 0;
  letter-spacing: -0.01em;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ ABOUT ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text {
  font-size: 1.06rem;
  color: var(--ink-soft);
  max-width: 56ch;
}

.about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.about-facts li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.about-facts span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 4px;
}

/* ============ SKILLS ============ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 40px;
}

.skill-group h3 {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0 0 14px;
  font-weight: 500;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  padding: 7px 13px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  font-size: 0.83rem;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.tags span:hover { border-color: var(--accent); color: var(--accent); }

.tags-sm span { font-size: 0.76rem; padding: 5px 11px; }

/* ============ PROJECTS ============ */
.projects {
  display: flex;
  flex-direction: column;
}

.project {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  transition: background 0.25s ease;
}

.project:last-child { border-bottom: 1px solid var(--line); }

.project-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 4px;
}

.project h3 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  margin: 0 0 6px;
  font-weight: 600;
}

.project-sub {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.project-desc {
  max-width: 62ch;
  color: var(--ink-soft);
  margin: 0 0 16px;
}

.project-metrics {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.project-metrics li {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  padding-left: 16px;
}

.project-metrics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  background: var(--accent-2);
  border-radius: 50%;
}

/* ============ EDUCATION ============ */
.edu-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 56px;
}

.edu-ring-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

.edu-ring { width: 100%; height: 100%; transform: rotate(-90deg); }

.ring-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 10;
}

.ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 540.35;
  stroke-dashoffset: 540.35;
  transition: stroke-dashoffset 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.edu-ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-display);
}

.edu-ring-label strong {
  font-size: 2.1rem;
  font-weight: 600;
  line-height: 1;
}

.edu-ring-label span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 6px;
  max-width: 110px;
}

.edu-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.edu-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.edu-list li:first-child { padding-top: 0; }

.edu-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.edu-top h3 {
  font-size: 1.02rem;
  margin: 0;
  font-weight: 600;
}

.edu-score {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
}

.edu-list p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.certs {
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.certs h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0 0 18px;
  font-weight: 500;
}

.certs ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 32px;
}

.certs li {
  font-size: 0.92rem;
  padding-left: 18px;
  position: relative;
}

.certs li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent-2);
}

/* ============ CONTACT ============ */
.contact-text {
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: 1.02rem;
  margin: 0 0 40px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.contact-value {
  font-size: 0.98rem;
  font-weight: 600;
  word-break: break-word;
}

/* ============ FOOTER ============ */
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px var(--pad) 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.back-top { color: var(--accent); font-weight: 600; }

/* ============ RESPONSIVE ============ */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-layout { grid-template-columns: 1fr; justify-items: center; text-align: left; }
  .certs ul { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 16px var(--pad) 24px;
    gap: 4px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li { border-bottom: 1px solid var(--line); }
  .nav-links a { display: block; padding: 14px 4px; }

  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .skills-grid { grid-template-columns: 1fr; }

  .project { grid-template-columns: 1fr; gap: 10px; }
  .project-num { padding-top: 0; }
}