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

:root {
  --bg: #111111;
  --surface: #161616;
  --surface-hover: #1c1c1c;
  --border: #2a2a2a;
  --border-hover: #3a3a3a;
  --text-primary: #e8e8e8;
  --text-secondary: #999999;
  --text-dim: #666666;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

html { background: var(--bg); scroll-behavior: smooth; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes ruleDraw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* -- SCROLL REVEAL (JS-assisted) -- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(0.22,1,0.36,1),
              transform 0.55s cubic-bezier(0.22,1,0.36,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s cubic-bezier(0.22,1,0.36,1),
              transform 0.45s cubic-bezier(0.22,1,0.36,1);
}
.stagger.visible > *:nth-child(1) { opacity:1; transform:none; transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { opacity:1; transform:none; transition-delay: 0.12s; }
.stagger.visible > *:nth-child(3) { opacity:1; transform:none; transition-delay: 0.19s; }
.stagger.visible > *:nth-child(4) { opacity:1; transform:none; transition-delay: 0.26s; }
.stagger.visible > *:nth-child(5) { opacity:1; transform:none; transition-delay: 0.33s; }
.stagger.visible > *:nth-child(6) { opacity:1; transform:none; transition-delay: 0.40s; }
.stagger.visible > *:nth-child(7) { opacity:1; transform:none; transition-delay: 0.47s; }

/* -- NAV -- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(17,17,17,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 clamp(24px, 6vw, 80px);
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: fadeIn 0.4s ease both;
}

.nav-name {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

/* blinking cursor after name */
.nav-name::after {
  content: '_';
  animation: cursorBlink 1.1s step-end infinite;
  margin-left: 1px;
  color: var(--text-dim);
}

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

.nav-links a {
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--text-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s cubic-bezier(0.22,1,0.36,1);
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { transform: scaleX(1); }

/* -- PAGE WRAPPER -- */
.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 clamp(24px, 6vw, 80px);
}

/* -- HERO -- */
#hero {
  padding-top: 140px;
  padding-bottom: 96px;
  border-bottom: 1px solid var(--border);
}

.hero-label {
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 20px;
  animation: fadeUp 0.5s 0.1s both;
}

.hero-name {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 8px;
  animation: fadeUp 0.55s 0.18s both;
}

.hero-role {
  font-size: clamp(13px, 2vw, 16px);
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  margin-bottom: 32px;
  animation: fadeUp 0.55s 0.26s both;
}

.hero-bio {
  max-width: 580px;
  font-size: 12px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 40px;
  animation: fadeUp 0.55s 0.34s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeUp 0.55s 0.42s both;
}

/* -- BUTTONS -- */
.btn {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 20px;
  border: 1px solid var(--border-hover);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-block;
  position: relative;
  overflow: hidden;
  transition: color 0.22s, border-color 0.22s;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--text-primary);
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.22,1,0.36,1);
  z-index: 0;
}

.btn span { position: relative; z-index: 1; }

.btn:hover { color: var(--bg); border-color: var(--text-primary); }
.btn:hover::before { transform: translateY(0); }

.btn-primary {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

/* -- SECTION SHELL -- */
section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type { border-bottom: none; }

.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 48px;
}

.section-num {
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  white-space: nowrap;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.section-rule {
  flex: 1;
  height: 1px;
  background: var(--border);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.7s cubic-bezier(0.22,1,0.36,1) 0.1s;
}

.reveal.visible .section-rule,
.section-header.visible .section-rule { transform: scaleX(1); }

/* -- PROJECTS GRID -- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.project-card {
  background: var(--bg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background 0.2s;
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--text-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1);
}

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

.project-tag {
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.project-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.project-desc {
  font-size: 11px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-stack {
  font-size: 10px;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.6;
}

.project-links {
  display: flex;
  gap: 16px;
  margin-top: 4px;
}

.project-links a {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.2s;
}

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

/* -- EXPERIENCE -- */
.experience-list { display: flex; flex-direction: column; }

.exp-row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s, padding-left 0.2s;
  cursor: default;
}

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

.exp-row:hover {
  background: var(--surface);
  padding-left: 10px;
}

.exp-company {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.exp-role {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-secondary);
}

.exp-date {
  font-size: 10px;
  font-weight: 300;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* -- SKILLS -- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.skills-group {
  background: var(--bg);
  padding: 20px 24px;
}

.skills-group-label {
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.skills-group-items {
  font-size: 11px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.9;
}

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

.contact-item {
  background: var(--bg);
  padding: 24px 28px;
  transition: background 0.2s, transform 0.2s;
  display: block;
}

.contact-item:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.contact-label {
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.contact-value {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-secondary);
  transition: color 0.15s;
}

.contact-item:hover .contact-value { color: var(--text-primary); }

/* -- FOOTER -- */
footer {
  padding: 32px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  font-weight: 300;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

/* -- RESPONSIVE -- */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .exp-row { grid-template-columns: 1fr; gap: 4px; }
  .exp-date { order: -1; }
}