/* ---------- tokens ---------- */
:root {
  --bg: #060a10;
  --bg-alt: #0a1018;
  --surface: #0f1722;
  --surface-2: #131d2b;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e7edf6;
  --text-dim: #8fa0b5;
  --text-faint: #5b6b80;

  --accent: #46d6ff;       /* cyan - eyes / laptop glow */
  --accent-soft: rgba(70, 214, 255, 0.12);
  --accent-2: #33e39c;      /* circuit green */
  --accent-2-soft: rgba(51, 227, 156, 0.12);
  --accent-3: #ff9a4d;      /* mascot orange fur */
  --accent-3-soft: rgba(255, 154, 77, 0.14);

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;

  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --container: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

/* subtle circuit-grid backdrop across whole page */
.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(70, 214, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(70, 214, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

main, .navbar, .footer { position: relative; z-index: 1; }

/* ---------- navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(6, 10, 16, 0.75);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 15px;
}

.brand-img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border-strong);
}

.nav-links {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.nav-links a {
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  color: var(--text-dim);
}
.lang-opt { padding: 2px 4px; transition: color 0.2s ease; }
.lang-opt.is-active { color: var(--accent); }
.lang-sep { color: var(--text-faint); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ---------- sections ---------- */
.section { padding: 108px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.tag-line {
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-size: 13px;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  max-width: 820px;
}

.section-head-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.section-count {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 13px;
  white-space: nowrap;
}

.section-desc {
  color: var(--text-dim);
  max-width: 640px;
  margin-top: 16px;
  font-size: 15.5px;
}

/* ---------- hero ---------- */
.hero {
  padding-top: 96px;
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.hero-role {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: clamp(14px, 1.6vw, 18px);
  margin-top: 14px;
  font-weight: 500;
}

.hero-desc {
  margin-top: 22px;
  color: var(--text-dim);
  max-width: 520px;
  font-size: 16px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #05121a;
  box-shadow: 0 0 0 0 rgba(70, 214, 255, 0.4);
}
.btn-primary:hover {
  box-shadow: 0 0 24px 2px rgba(70, 214, 255, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(70, 214, 255, 0.22), rgba(51, 227, 156, 0.08) 55%, transparent 75%);
  filter: blur(10px);
  border-radius: 50%;
}

.hero-logo-img {
  position: relative;
  width: min(360px, 80%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-cue span {
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown {
  0% { opacity: 0; transform: translateY(0); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translateY(10px); }
}

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  margin-top: 40px;
  align-items: start;
}

.about-text p {
  color: var(--text-dim);
  margin-bottom: 16px;
  font-size: 15.5px;
}

.about-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.about-pills span {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  background: var(--surface);
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
}
.stat-label {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  font-family: var(--font-mono);
  line-height: 1.4;
}

/* ---------- projects ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  margin-bottom: 36px;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover { color: var(--text); border-color: var(--text-dim); }
.filter-btn.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, 0.6);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.project-name {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 9px;
  border-radius: 999px;
  white-space: nowrap;
  background: var(--surface-2);
  color: var(--text-faint);
}
.project-tag[data-tag="ai"] { background: var(--accent-soft); color: var(--accent); }
.project-tag[data-tag="data"] { background: var(--accent-2-soft); color: var(--accent-2); }
.project-tag[data-tag="web"] { background: var(--accent-3-soft); color: var(--accent-3); }
.project-tag[data-tag="dashboard"] { background: rgba(180, 130, 255, 0.14); color: #b482ff; }
.project-tag[data-tag="aero"] { background: rgba(122, 162, 255, 0.14); color: #7aa2ff; }
.project-tag[data-tag="cyber"] { background: rgba(255, 92, 138, 0.14); color: #ff5c8a; }

.project-card--soon {
  background: transparent;
  border-style: dashed;
  border-color: var(--border-strong);
}

.project-stack {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

.project-desc {
  color: var(--text-dim);
  font-size: 14px;
  flex: 1;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  transition: color 0.2s ease, gap 0.2s ease;
}
.project-link:hover { color: var(--accent); gap: 9px; }

.empty-state {
  text-align: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
  padding: 40px 0;
}

.projects-more {
  text-align: center;
  margin-top: 40px;
}
.projects-more a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}
.projects-more a:hover { border-color: var(--accent); }

/* ---------- skills ---------- */
.skills-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  margin-bottom: 16px;
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-pills span {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
}

/* ---------- journey ---------- */
.timeline {
  margin-top: 44px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--border-strong);
  padding-left: 32px;
  max-width: 760px;
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -43px;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.timeline-marker span {
  font-family: var(--font-mono);
  font-size: 7px;
  font-weight: 800;
  color: var(--accent);
}
.timeline-item.is-future .timeline-marker { border-style: dashed; border-color: #ff5c8a; }
.timeline-item.is-future .timeline-marker span { color: #ff5c8a; }
.timeline-item.is-future .timeline-content h3 { color: var(--text-dim); }

.timeline-content h3 {
  font-family: var(--font-mono);
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-content p {
  color: var(--text-dim);
  font-size: 14.5px;
  max-width: 600px;
}

.resume-cta {
  margin-top: 52px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}
.resume-cta p {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: 14px;
}
.resume-buttons { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- contact ---------- */
.contact-inner { text-align: center; }
.contact-inner .section-title,
.contact-inner .section-desc { margin-left: auto; margin-right: auto; }

.contact-links {
  margin: 44px auto 0;
  max-width: 900px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 26px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.contact-card:hover { transform: translateY(-3px); border-color: var(--accent); }

.contact-icon { font-size: 20px; color: var(--accent); line-height: 1; }
.contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}
.contact-value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-faint);
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-visual { order: -1; margin-bottom: 20px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-groups { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-toggle { display: flex; }
  .section { padding: 76px 0; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-links { grid-template-columns: 1fr; }
  .resume-cta { flex-direction: column; align-items: flex-start; }
}