/* ----- Variables (developer portfolio palette) ----- */
:root {
  --bg: #0a0e17;
  --bg-elevated: #0f1420;
  --surface: #131b2e;
  --surface-hover: #1a2540;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-cyan: #22d3ee;
  --accent-cyan-dim: #06b6d4;
  --accent-violet: #a78bfa;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --border: #1e293b;
  --border-glow: rgba(34, 211, 238, 0.3);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --radius: 10px;
  --radius-lg: 14px;
  --space: 1.25rem;
  --max-width: 720px;
  --gradient-hero: linear-gradient(135deg, #22d3ee 0%, #a78bfa 50%, #34d399 100%);
  --gradient-card: linear-gradient(135deg, rgba(34, 211, 238, 0.08) 0%, rgba(167, 139, 250, 0.06) 100%);
}

/* ----- Base ----- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  overflow-x: hidden;
  position: relative;
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ----- Subtle grid overlay (developer aesthetic) ----- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ----- Animated background orbs (multi-color) ----- */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
  animation: float 22s ease-in-out infinite;
}
.bg-orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 65%);
  top: -120px;
  right: -80px;
  animation-delay: 0s;
}
.bg-orb-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.18) 0%, transparent 65%);
  bottom: 15%;
  left: -100px;
  animation-delay: -8s;
}
.bg-orb-3 {
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.12) 0%, transparent 65%);
  top: 45%;
  left: 45%;
  animation-delay: -14s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -25px) scale(1.08); }
  66% { transform: translate(-30px, 25px) scale(0.92); }
}

/* ----- Scroll progress bar (gradient) ----- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-hero);
  z-index: 1000;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { color: var(--accent-cyan-dim); text-decoration: underline; }
ul { padding-left: 1.25rem; }
p { margin: 0 0 var(--space); }
p:last-child { margin-bottom: 0; }

/* ----- Header ----- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s ease, box-shadow 0.3s ease;
}
.header.scrolled {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}
.nav {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space) 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.15rem;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: filter 0.2s, transform 0.2s;
}
.logo:hover { text-decoration: none; filter: brightness(1.2); transform: scale(1.05); -webkit-text-fill-color: transparent; }
.status-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-emerald);
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-radius: 999px;
  margin-right: auto;
  margin-left: 1rem;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  animation: statusPulse 2s ease-in-out infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
  50% { opacity: 0.85; box-shadow: 0 0 0 4px rgba(52, 211, 153, 0); }
}
@media (max-width: 768px) {
  .status-pill .status-text { display: none; }
  .status-pill { padding: 0.35rem 0.5rem; margin-left: 0.5rem; }
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-hero);
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--accent-cyan); }
.nav-links a.active::after { width: 100%; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  transition: transform 0.3s ease;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.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);
}

/* ----- Hero ----- */
.hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
  text-align: left;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55%;
  height: 85%;
  background: radial-gradient(ellipse, rgba(34, 211, 238, 0.06) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 720px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-photo { order: -1; }
  .hero-cta { justify-content: center; }
  .hero-bio { margin-left: auto; margin-right: auto; }
  .hero-terminal { max-width: 100%; margin-left: auto; margin-right: auto; }
}
.hero-text { max-width: 540px; }
.hero-photo { flex-shrink: 0; }
.hero-photo img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 0 50px rgba(34, 211, 238, 0.2), 0 0 80px rgba(167, 139, 250, 0.1);
  transition: transform 0.3s ease-out, box-shadow 0.4s ease;
}
.hero-photo img:hover {
  transform: scale(1.04);
  box-shadow: 0 0 60px rgba(34, 211, 238, 0.25), 0 0 100px rgba(167, 139, 250, 0.12);
}
@media (max-width: 720px) {
  .hero-photo img { width: 160px; height: 160px; }
}
.hero-greeting {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
  letter-spacing: 0.05em;
}
.hero-bracket {
  color: var(--accent-emerald);
  margin-right: 0.35rem;
  opacity: 0.9;
}
.hero-name {
  font-size: clamp(2.25rem, 6vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  line-height: 1.15;
  min-height: 1.2em;
  background: linear-gradient(135deg, #f1f5f9 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-name .cursor {
  display: inline-block;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
  color: var(--accent-cyan);
  -webkit-text-fill-color: initial;
}
@keyframes blink {
  50% { opacity: 0; }
}
.hero-tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.hero-bio {
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-terminal {
  margin-top: 2rem;
  max-width: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(15, 20, 32, 0.9);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: #ef4444; }
.terminal-dot:nth-child(2) { background: var(--accent-amber); }
.terminal-dot:nth-child(3) { background: var(--accent-emerald); }
.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}
.terminal-body {
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
}
.terminal-line { color: var(--text-muted); }
.terminal-line .t-prompt { color: var(--accent-emerald); margin-right: 0.5rem; }
.terminal-line .t-output { color: var(--accent-cyan); }
.terminal-line .t-cursor { color: var(--accent-cyan); animation: blink 1s step-end infinite; }
.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}
.btn:hover { transform: translateY(-3px); }
.btn-primary {
  background: var(--gradient-hero);
  color: var(--bg);
  border: none;
  box-shadow: 0 4px 20px rgba(34, 211, 238, 0.35);
}
.btn-primary:hover {
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.45), 0 4px 20px rgba(167, 139, 250, 0.25);
  text-decoration: none;
  color: var(--bg);
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  text-decoration: none;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
}

/* ----- Sections ----- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}
.section-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 1.5rem;
}

/* ----- About ----- */
.about-content { color: var(--text-muted); margin-bottom: 1.5rem; }
.code-snippet {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}
.code-snippet-header {
  padding: 0.5rem 1rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.code-filename { color: var(--accent-violet); }
.code-block {
  margin: 0;
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
  overflow-x: auto;
}
.code-block .line-num {
  display: inline-block;
  width: 1.5em;
  margin-right: 1rem;
  color: var(--border);
  user-select: none;
}
.code-block .k { color: var(--accent-violet); }
.code-block .nf { color: var(--accent-cyan); }
.code-block .s { color: var(--accent-emerald); }

/* ----- Timeline (Experience / Education) ----- */
.timeline {
  position: relative;
  padding-left: 1.5rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-violet), var(--accent-emerald));
  opacity: 0.4;
  border-radius: 1px;
}
.timeline-item {
  position: relative;
  padding-left: 1.5rem;
  padding-bottom: 2rem;
  transition: transform 0.3s ease, opacity 0.4s ease;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-hero);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.4);
  animation: pulse 2.5s ease-in-out infinite;
  z-index: 1;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.35); }
  50% { box-shadow: 0 0 0 10px rgba(34, 211, 238, 0); }
}
.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.2rem;
  color: var(--text);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}
.timeline-company {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}
.timeline-content ul {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ----- Skill bars ----- */
.skill-bars {
  margin-bottom: 2rem;
}
.skill-bar-item {
  margin-bottom: 1.25rem;
}
.skill-bar-item:last-child { margin-bottom: 0; }
.skill-bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.skill-bar-pct { color: var(--accent-cyan); }
.skill-bar-track {
  height: 8px;
  background: var(--surface);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.skill-bar-fill {
  height: 100%;
  width: 0;
  max-width: 100%;
  border-radius: 3px;
  background: var(--gradient-hero);
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-bar-fill.revealed { width: var(--fill-pct, 0); }
.skills-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 1.5rem 0 1rem;
}
/* ----- Skills (multi-color tags) ----- */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}
.skill-tag {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  transition: transform 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.skill-tag:hover {
  transform: translateY(-3px);
  color: var(--text);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}
.skill-tag:nth-child(6n+1):hover { border-color: var(--accent-cyan); box-shadow: 0 6px 20px rgba(34, 211, 238, 0.2); }
.skill-tag:nth-child(6n+2):hover { border-color: var(--accent-violet); box-shadow: 0 6px 20px rgba(167, 139, 250, 0.2); }
.skill-tag:nth-child(6n+3):hover { border-color: var(--accent-emerald); box-shadow: 0 6px 20px rgba(52, 211, 153, 0.2); }
.skill-tag:nth-child(6n+4):hover { border-color: var(--accent-amber); box-shadow: 0 6px 20px rgba(251, 191, 36, 0.2); }
.skill-tag:nth-child(6n+5):hover { border-color: var(--accent-cyan-dim); box-shadow: 0 6px 20px rgba(6, 182, 212, 0.2); }
.skill-tag:nth-child(6n):hover { border-color: var(--accent-violet); box-shadow: 0 6px 20px rgba(167, 139, 250, 0.2); }

/* ----- Projects ----- */
.projects-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 600px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  background-image: var(--gradient-card);
  transition: transform 0.3s ease, border-color 0.3s, box-shadow 0.3s ease;
}
.project-card:hover,
.reveal.revealed .project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35), 0 0 40px rgba(34, 211, 238, 0.12);
}
.project-card h3 {
  font-size: 1.08rem;
  margin: 0 0 0.5rem;
  color: var(--text);
}
.project-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.project-links {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}
.project-links a {
  color: var(--accent-cyan);
  font-weight: 500;
}
.project-links a:hover { text-decoration: underline; color: var(--accent-cyan-dim); }

/* ----- Activity heatmap (GitHub-style) ----- */
.activity-heatmap {
  margin-bottom: 2rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}
.heatmap-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: block;
}
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
}
.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 3px;
  background: var(--border);
  transition: background 0.2s;
}
.heatmap-cell.lvl-0 { background: var(--border); }
.heatmap-cell.lvl-1 { background: rgba(34, 211, 238, 0.35); }
.heatmap-cell.lvl-2 { background: rgba(34, 211, 238, 0.55); }
.heatmap-cell.lvl-3 { background: rgba(34, 211, 238, 0.75); }
.heatmap-cell.lvl-4 { background: var(--accent-cyan); }
/* ----- Contact ----- */
.contact-section { text-align: center; }
.contact-intro {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  font-size: 1rem;
}
.contact-links a {
  color: var(--accent-cyan);
  transition: transform 0.2s, color 0.2s, text-shadow 0.2s;
}
.contact-links a:hover {
  transform: translateY(-2px);
  color: var(--accent-violet);
}

/* ----- Stats section ----- */
.stats-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
}
@media (max-width: 380px) {
  .stats-grid { grid-template-columns: 1fr; }
}
.stat-item {
  padding: 1.25rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.stat-item:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.1);
}
.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
}
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* ----- Footer ----- */
.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}
.footer-line {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}
.footer-comment { color: var(--accent-violet); }

/* ----- Animations ----- */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeSlideUp 0.7s ease forwards;
  animation-delay: calc(0.1s * var(--i, 0));
}
@keyframes fadeSlideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal.revealed .timeline-item {
  opacity: 1;
  transform: translateX(0);
}
.timeline-item {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.timeline-item:nth-child(1) { transition-delay: 0.1s; }
.timeline-item:nth-child(2) { transition-delay: 0.2s; }
.timeline-item:nth-child(3) { transition-delay: 0.3s; }
.timeline-item:nth-child(4) { transition-delay: 0.4s; }
.timeline-item:nth-child(5) { transition-delay: 0.5s; }
.reveal.revealed .project-card {
  opacity: 1;
  transform: translateY(0);
}
.project-card {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.3s, box-shadow 0.3s;
}
.project-card:nth-child(1) { transition-delay: 0.1s; }
.project-card:nth-child(2) { transition-delay: 0.15s; }
.project-card:nth-child(3) { transition-delay: 0.2s; }
.project-card:nth-child(4) { transition-delay: 0.25s; }
.project-card:nth-child(5) { transition-delay: 0.3s; }
.project-card:nth-child(6) { transition-delay: 0.35s; }
.reveal.revealed .skill-tag {
  opacity: 1;
  transform: scale(1);
}
.skills-grid.reveal-children .skill-tag {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.skills-grid.reveal-children.revealed .skill-tag {
  opacity: 1;
  transform: scale(1);
}
.skills-grid .skill-tag:nth-child(1) { transition-delay: 0.02s; }
.skills-grid .skill-tag:nth-child(2) { transition-delay: 0.04s; }
.skills-grid .skill-tag:nth-child(3) { transition-delay: 0.06s; }
.skills-grid .skill-tag:nth-child(4) { transition-delay: 0.08s; }
.skills-grid .skill-tag:nth-child(5) { transition-delay: 0.1s; }
.skills-grid .skill-tag:nth-child(6) { transition-delay: 0.12s; }
.skills-grid .skill-tag:nth-child(7) { transition-delay: 0.14s; }
.skills-grid .skill-tag:nth-child(8) { transition-delay: 0.16s; }
.skills-grid .skill-tag:nth-child(9) { transition-delay: 0.18s; }
.skills-grid .skill-tag:nth-child(10) { transition-delay: 0.2s; }
.skills-grid .skill-tag:nth-child(n+11) { transition-delay: 0.22s; }

/* ----- Mobile nav ----- */
@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 240px;
    height: 100vh;
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    flex-direction: column;
    padding: 4rem 1.5rem 1.5rem;
    gap: 1rem;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }
  .nav-links.is-open { transform: translateX(0); }
  .hero-cta { flex-direction: column; align-items: flex-start; }
}