/* ── RESET & BASE ────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:     #0e1117;
  --paper:   #f5f0e8;
  --surface: #ede8df;
  --accent:  #1a3d8f;
  --red:     #c8392b;
  --muted:   #6b6358;
  --rule:    rgba(14,17,23,0.13);
  --gutter:  clamp(1.5rem, 6vw, 5rem);
  --serif:   'EB Garamond', Georgia, serif;
  --mono:    'Space Mono', monospace;
  --nav-h:   58px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}

/* paper noise texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── NAV ─────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--rule);
  background: rgba(245, 240, 232, 0.92);
  backdrop-filter: blur(10px);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.2rem;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}

.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── HERO ────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-top: var(--nav-h);
}

.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem var(--gutter) 5rem calc(var(--gutter) * 1.1);
  border-right: 1px solid var(--rule);
}

.hero-left > * {
  animation: fadeUp 0.7s ease both;
}
.hero-label  { animation-delay: 0.1s; }
.hero-left h1          { animation-delay: 0.22s; }
.hero-desc   { animation-delay: 0.34s; }
.hero-ctas   { animation-delay: 0.46s; }

.hero-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1.2rem;
}

h1 {
  font-size: clamp(3rem, 5.5vw, 5.5rem);
  font-weight: 500;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 38ch;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.75rem 1.6rem;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  transition: background 0.2s, color 0.2s;
  cursor: pointer;
}

.btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-fill {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}

.btn-fill:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.hero-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem var(--gutter);
  gap: 2rem;
}

.particle-wrap {
  width: 100%;
  aspect-ratio: 1;
  max-width: 420px;
}

.particle-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  width: 100%;
}

.stat {
  border-top: 1px solid var(--rule);
  padding-top: 0.8rem;
}

.stat-num {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--accent);
  line-height: 1.1;
}

.stat-label {
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.2rem;
}

/* ── SECTIONS ────────────────────────────────────── */
section {
  padding: 5rem var(--gutter);
  border-top: 1px solid var(--rule);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.section-num {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--red);
  letter-spacing: 0.1em;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 500;
  line-height: 1.15;
}

/* ── ABOUT ───────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 1.2rem;
  line-height: 1.85;
}

.about-text p strong { color: var(--ink); font-weight: 600; }

.sub-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
}

.interests-list li {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.interests-list li::before {
  content: '—';
  font-family: var(--mono);
  color: var(--red);
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ── EDUCATION ───────────────────────────────────── */
.edu-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
}

.edu-school {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
}

.edu-degree {
  font-style: italic;
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.edu-details {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.75;
  max-width: 60ch;
}

.edu-dates {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  white-space: nowrap;
  letter-spacing: 0.05em;
  line-height: 1.7;
  padding-top: 0.25rem;
  text-align: right;
}

.edu-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--accent);
  color: white;
  padding: 0.18rem 0.65rem;
  margin-top: 0.6rem;
}

.edu-badge--red { background: var(--red); }

/* ── SKILLS ──────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  border: 1px solid var(--rule);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

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

.skill-card-title {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.9rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--rule);
  color: var(--muted);
  transition: border-color 0.2s, color 0.2s;
}

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

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

.project-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.project-year {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
  text-transform: uppercase;
  transform: rotate(180deg);
  padding-top: 0.2rem;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.project-desc {
  font-size: 0.98rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 0.9rem;
  max-width: 65ch;
}

/* ── CONTACT ─────────────────────────────────────── */
.contact-section {
  background: var(--ink);
  color: var(--paper);
}

.contact-section h2 { color: var(--paper); }
.contact-num { color: var(--red) !important; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-intro {
  font-size: 1.1rem;
  line-height: 1.85;
  color: rgba(245, 240, 232, 0.72);
}

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

.contact-links li {
  border-bottom: 1px solid rgba(245, 240, 232, 0.1);
}

.contact-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  color: var(--paper);
  font-size: 1rem;
  transition: color 0.2s;
}

.contact-links a:hover { color: var(--red); }

.link-type {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 240, 232, 0.38);
  display: block;
  margin-bottom: 2px;
}

.link-arrow {
  font-family: var(--mono);
  color: rgba(245, 240, 232, 0.25);
  transition: color 0.2s;
}

.contact-links a:hover .link-arrow { color: var(--red); }

/* ── FOOTER ──────────────────────────────────────── */
footer {
  background: var(--ink);
  border-top: 1px solid rgba(245, 240, 232, 0.07);
  padding: 1.5rem var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer span {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: rgba(245, 240, 232, 0.28);
  letter-spacing: 0.08em;
}

/* ── READING PROGRESS BAR ────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--red);
  z-index: 300;
  transition: width 0.1s linear;
}

/* ── CUSTOM CURSOR ───────────────────────────────── */
#cursor-dot {
  position: fixed;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.05s, background 0.2s;
}

#cursor-ring {
  position: fixed;
  width: 28px; height: 28px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.25s, height 0.25s, border-color 0.2s, opacity 0.2s;
  opacity: 0.5;
}

body.cursor-hover #cursor-ring {
  width: 48px; height: 48px;
  opacity: 0.8;
  border-color: var(--red);
}

body.cursor-hover #cursor-dot {
  background: var(--red);
}

@media (hover: none) {
  #cursor-dot, #cursor-ring { display: none; }
}

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 820px) {
  #hero {
    grid-template-columns: 1fr;
  }

  .hero-left {
    border-right: none;
    padding-top: calc(var(--nav-h) + 3rem);
  }

  .hero-right { display: none; }

  .about-grid   { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .edu-item     { grid-template-columns: 1fr; }
  .edu-dates    { text-align: left; }

  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(245, 240, 232, 0.97);
    border-bottom: 1px solid var(--rule);
  }

  .nav-links.open { display: flex; }

  .nav-links li { border-bottom: 1px solid var(--rule); }

  .nav-links a {
    display: block;
    padding: 0.9rem var(--gutter);
    font-size: 0.75rem;
  }

  .burger { display: flex; }
}

@media (max-width: 520px) {
  .project-item { grid-template-columns: 1fr; }
  .project-year { writing-mode: horizontal-tb; transform: none; }
}