@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

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

:root {
  --bg: #f9f8f5;
  --bg2: #f2f0eb;
  --ink: #1a1916;
  --ink2: #5a5751;
  --ink3: #9a9691;
  --accent: #c82a44;
  --accent2: #e8c5a0;
  --border: #e2dfd8;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', sans-serif;
  --radius: 4px;
  --max: 900px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2.5rem;
  background: rgba(249,248,245,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink2);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 2.5rem;
  max-width: var(--max);
  margin: 0 auto;
}

.hero-inner {
  padding-top: 5rem;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
}

.hero-name {
  font-family: var(--serif);
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  opacity: 0;
  animation: fadeUp 0.7s 0.25s forwards;
}

.hero-name em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: var(--ink2);
  max-width: 520px;
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s forwards;
}

.hero-cta {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s 0.55s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

.hero-scroll {
  margin-top: 5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.7s forwards;
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--ink3);
}

.scroll-text {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink3);
}

/* ── SECTIONS ── */
section {
  padding: 6rem 2.5rem;
  max-width: var(--max);
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.section-num {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* ── PROJECTS ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
}

.project-card {
  background: var(--bg);
  padding: 2rem;
  transition: background 0.2s;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.project-card:hover { background: var(--bg2); }
.project-card:hover::before { transform: scaleX(1); }

.project-num {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ink3);
  margin-bottom: 0.75rem;
}

.project-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--ink);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--ink2);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.tag {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  background: var(--bg2);
  color: var(--ink2);
  border-radius: 2px;
  border: 1px solid var(--border);
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  font-size: 0.78rem;
  color: var(--ink2);
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

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

/* ── SKILLS ── */
.skills-layout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 2rem;
}

.skill-group h3 {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.skill-list li {
  font-size: 0.9rem;
  color: var(--ink2);
  padding: 0.3rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-list li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent2);
  flex-shrink: 0;
}

/* ── COMPETITIVE PROGRAMMING ── */
.cp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.cp-card {
  background: var(--bg);
  padding: 1.75rem;
  transition: background 0.2s;
}

.cp-card:hover { background: var(--bg2); }

.cp-platform {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 0.4rem;
}

.cp-handle {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.cp-rating {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 400;
}

.cp-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--ink3);
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

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

/* ── CONTACT ── */
#contact {
  border-top: 1px solid var(--border);
}

.contact-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3rem;
  flex-wrap: wrap;
}

.contact-left h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.contact-left h2 em {
  font-style: italic;
  color: var(--accent);
}

.contact-left p {
  color: var(--ink2);
  max-width: 380px;
  font-size: 0.95rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 0.5rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
  min-width: 220px;
}

.contact-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateX(4px);
}

.contact-link-icon {
  width: 18px;
  height: 18px;
  opacity: 0.6;
}

/* ── FOOTER ── */
footer {
  padding: 2rem 2.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 1rem;
}

footer p {
  font-size: 0.8rem;
  color: var(--ink3);
  letter-spacing: 0.03em;
}

/* ── DIVIDER ── */
.full-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  nav { padding: 1rem 1.25rem; }
  .nav-links { gap: 1.25rem; }
  section { padding: 4rem 1.25rem; }
  #hero { padding: 0 1.25rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-inner { flex-direction: column; }
  footer { padding: 1.5rem 1.25rem; }
}