:root {
  --bg: #080b0f;
  --bg2: #0d1117;
  --bg3: #111820;
  --border: #1e2d3d;
  --border2: #243447;
  --text: #cdd9e5;
  --text2: #768a9e;
  --text3: #4a5f73;
  --accent: #39d353;
  --accent2: #58a6ff;
  --accent3: #f0883e;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8,11,15,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

nav .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.nav-logo {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.nav-logo span { color: var(--text2); }

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

nav a {
  color: var(--text2);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

nav a:hover { color: var(--accent2); }

/* HERO */
.hero {
  padding: 140px 0 80px;
  border-bottom: 1px solid var(--border);
}

.hero-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--accent);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #e6edf3;
  margin-bottom: 1.5rem;
}

h1 em {
  font-style: normal;
  color: var(--text2);
}

.hero-desc {
  font-family: var(--sans);
  font-size: 16px;
  color: var(--text2);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}


/* SECTION HEADERS */
.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 3rem;
}

.section-num {
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.1em;
}

.section-title {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text2);
  text-transform: uppercase;
}

/* PROJECTS */
.project {
  border: 1px solid var(--border);
  background: var(--bg2);
  margin-bottom: 1.5rem;
  transition: border-color 0.2s;
}

.project:hover { border-color: var(--border2); }

.project-header {
  padding: 1.5rem 1.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
}

.project-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.project-title {
  font-size: 15px;
  font-weight: 500;
  color: #e6edf3;
  letter-spacing: -0.01em;
}

.project-badge {
  font-size: 10px;
  padding: 2px 8px;
  border: 1px solid var(--accent);
  color: var(--accent);
  letter-spacing: 0.08em;
}

.project-badge.live {
  border-color: var(--accent2);
  color: var(--accent2);
}

.project-desc {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
  max-width: 600px;
}

.project-links {
  display: flex;
  gap: 1rem;
  flex-shrink: 0;
}

.project-link {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text3);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--border);
  transition: all 0.2s;
  white-space: nowrap;
}

.project-link:hover {
  color: var(--accent2);
  border-color: var(--accent2);
}

.project-body {
  padding: 1.5rem 1.75rem;
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag {
  font-size: 11px;
  padding: 3px 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text3);
  letter-spacing: 0.05em;
}

/* ARCHITECTURE DIAGRAMS */
.diagram-container {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 0.5rem;
}

.diagram-label {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text3);
  margin-bottom: 1rem;
}

svg.arch {
  width: 100%;
  height: auto;
  display: block;
}

/* SKILLS */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.skill-group {
  background: var(--bg2);
  padding: 1.25rem 1.5rem;
}

.skill-group-title {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent3);
  margin-bottom: 0.75rem;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.skill-list li {
  font-size: 12px;
  color: var(--text2);
}

.skill-list li::before {
  content: '→ ';
  color: var(--text3);
}

/* ABOUT */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.about-text {
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text2);
  line-height: 1.9;
}

.about-text p { margin-bottom: 1rem; }

.about-details { border-left: 1px solid var(--border); padding-left: 2rem; }

.detail-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-child { border-bottom: none; }

.detail-key {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text3);
}

.detail-val {
  font-size: 13px;
  color: var(--text);
}

/* FOOTER */
footer {
  padding: 3rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  font-size: 12px;
  color: var(--text3);
}

.footer-right {
  display: flex;
  gap: 1.5rem;
}

.footer-right a {
  font-size: 11px;
  color: var(--text3);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

.footer-right a:hover { color: var(--accent2); }

/* CURSOR BLINK */
.blink {
  animation: blink 1.2s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* FADE IN */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-up {
  animation: fadeUp 0.6s ease forwards;
  opacity: 0;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@media (max-width: 640px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-details { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 2rem; }
  h1 { font-size: 2rem; }
  .project-header { flex-direction: column; }
  nav ul { gap: 1rem; }
}