/* ===== Design tokens ===== */
:root {
  --bg: #06080a;
  --bg-alt: #0a0e12;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 199, 0.4);
  --text: #eef2f3;
  --text-dim: #97a3a8;
  --text-faint: #5c6a70;
  --accent: #00e5c7;
  --accent-soft: rgba(0, 229, 199, 0.12);
  --accent-2: #7c9eff;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --container: 1080px;
  --radius: 14px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f8;
    --bg-alt: #ffffff;
    --surface: rgba(10, 14, 18, 0.03);
    --surface-hover: rgba(10, 14, 18, 0.05);
    --border: rgba(10, 14, 18, 0.08);
    --text: #10161a;
    --text-dim: #4b585e;
    --text-faint: #8a969b;
    --accent: #00a68f;
    --accent-2: #3a5fd9;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

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

/* ===== Background texture ===== */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 70%);
  opacity: 0.5;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 10%, rgba(0, 229, 199, 0.08), transparent 60%),
    radial-gradient(500px circle at 85% 25%, rgba(124, 158, 255, 0.08), transparent 60%);
}

/* ===== Boot screen ===== */
.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: #05070a;
  transition: opacity .5s ease, visibility .5s ease;
}
.boot-screen.boot-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-window {
  width: min(680px, 90vw);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: #0a0d10;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255,255,255,0.02);
  overflow: hidden;
}

.boot-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: #12161b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.boot-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.boot-dot-red { background: #ff5f56; }
.boot-dot-yellow { background: #ffbd2e; }
.boot-dot-green { background: #27c93f; }
.boot-titletext {
  margin: 0 auto;
  transform: translateX(-16px);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #6b7680;
}

.boot-body {
  margin: 0;
  padding: 22px 24px 28px;
  min-height: 260px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: #c9f7ef;
  white-space: pre-wrap;
  word-break: break-word;
}
.boot-body .boot-prompt { color: #00e5c7; }
.boot-body .boot-ok { color: #00e5c7; }
.boot-body .boot-dim { color: #6b7680; }
.boot-cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: #00e5c7;
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: boot-blink 0.9s steps(1) infinite;
}
@keyframes boot-blink {
  50% { opacity: 0; }
}

.boot-skip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #6b7680;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease;
}
.boot-skip:hover {
  color: #c9f7ef;
  border-color: rgba(0, 229, 199, 0.4);
}

@media (max-width: 720px) {
  .boot-body { font-size: 0.78rem; min-height: 220px; padding: 18px; }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: min(94%, 1000px);
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-alt) 68%, transparent);
  backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 10px 34px -16px rgba(0, 0, 0, 0.55);
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease, top .3s ease;
}
.site-header.scrolled {
  top: 12px;
  border-color: var(--border-hover);
  box-shadow: 0 14px 44px -16px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 229, 199, 0.08);
}
.site-header .container {
  max-width: none;
  padding: 0 10px 0 22px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: inline-flex;
  flex-shrink: 0;
  border-radius: 12px;
  transition: transform .25s ease;
}
.logo:hover { transform: scale(1.05); }
.logo:active { transform: scale(0.96); }

.logo-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: -0.02em;
  color: #04211d;
  box-shadow: 0 6px 20px -6px rgba(0, 229, 199, 0.55);
}

.logo-status {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-alt);
  animation: logo-pulse 2.2s ease infinite;
}
@keyframes logo-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 229, 199, 0.55); }
  70% { box-shadow: 0 0 0 7px rgba(0, 229, 199, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 229, 199, 0); }
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
}

.nav-links > li > a:not(.btn) {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color .2s ease;
}
.nav-links > li > a:not(.btn)::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--surface-hover);
  opacity: 0;
  transform: scale(0.85);
  transition: opacity .2s ease, transform .2s ease;
  z-index: -1;
}
.nav-links > li > a:not(.btn):hover {
  color: var(--text);
}
.nav-links > li > a:not(.btn):hover::before {
  opacity: 1;
  transform: scale(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  color: #04211d;
  box-shadow: 0 8px 24px -8px rgba(0, 229, 199, 0.5);
}
.btn-primary:hover { box-shadow: 0 12px 32px -8px rgba(0, 229, 199, 0.65); }

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

.btn-ghost {
  margin-left: 8px;
  border-color: var(--border);
  padding: 9px 18px;
  font-size: 0.85rem;
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--border-hover); background: var(--surface); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 96px;
  padding-bottom: 64px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 48px;
  align-items: center;
}

.hero-photo {
  display: flex;
  justify-content: center;
}

.hero-photo-frame {
  position: relative;
  width: min(320px, 80%);
  aspect-ratio: 1 / 1;
  border-radius: 28px;
  padding: 3px;
  background: linear-gradient(155deg, var(--accent), var(--accent-2));
}

.hero-photo-frame::before {
  content: '';
  position: absolute;
  inset: -18px;
  z-index: -1;
  border-radius: 36px;
  background: radial-gradient(circle, rgba(0, 229, 199, 0.25), transparent 70%);
  filter: blur(4px);
}

.hero-photo-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 25px;
  background: var(--bg);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0 0 24px;
  letter-spacing: 0.02em;
}
.eyebrow .bracket { color: var(--text-faint); }

.hero h1 {
  margin: 0 0 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.hero-name {
  display: block;
  font-size: clamp(3rem, 8vw, 5.5rem);
  background: linear-gradient(115deg, var(--text) 30%, var(--accent) 65%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-role {
  display: block;
  font-size: clamp(1.15rem, 2.6vw, 1.8rem);
  color: var(--text-dim);
  font-weight: 600;
  margin-top: 12px;
  letter-spacing: -0.01em;
}

.hero-summary {
  max-width: 640px;
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0 0 36px;
}
.hero-summary strong { color: var(--text); }

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-links {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-dim);
}
.hero-links a {
  position: relative;
  transition: color .2s ease;
}
.hero-links a:hover { color: var(--accent); }
.hero-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.hero-links a:hover::after { transform: scaleX(1); }
.hero-location { color: var(--text-faint); }

.scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 32px;
  width: 26px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.scroll-cue span {
  display: block;
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 999px;
  margin: 7px auto 0;
  animation: scrollcue 1.8s ease infinite;
}
@keyframes scrollcue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { opacity: 0; }
}

/* ===== Sections ===== */
.section {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}

.section-title {
  position: relative;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 56px;
  padding-bottom: 20px;
}
.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-text {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.stat {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .25s ease, transform .25s ease;
}
.stat:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}
.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* ===== Timeline / Experience ===== */
.timeline {
  position: relative;
  padding-left: 200px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 148px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--border) 90%);
}

.job {
  position: relative;
  display: grid;
  grid-template-columns: 200px 1fr;
  margin-left: -200px;
  gap: 0;
  padding-bottom: 56px;
}
.job:last-child { padding-bottom: 0; }

.job-meta {
  padding-top: 4px;
  padding-right: 40px;
  text-align: right;
}
.job-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.job-body {
  position: relative;
  padding-left: 40px;
}
.job-body::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.job-body h3 {
  margin: 0 0 6px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.job-company {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}
.job-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.job-body li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  color: var(--text-dim);
  font-size: 0.96rem;
}
.job-body li:last-child { margin-bottom: 0; }
.job-body li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
  top: 2px;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .25s ease, transform .25s ease;
}
.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.project-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.project-link:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}

.project-card h3 {
  margin: 0 0 14px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.project-card p {
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.7;
  margin: 0 0 22px;
}
.project-card p code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 6px;
  color: var(--accent);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.skill-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .25s ease, transform .25s ease;
}
.skill-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.skill-card h3 {
  margin: 0 0 20px;
  font-size: 1.05rem;
  font-weight: 700;
}
.skill-card h3::before {
  content: '#';
  color: var(--accent);
  margin-right: 6px;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: var(--bg-alt);
  transition: color .2s ease, border-color .2s ease;
}
.tags span:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}

/* ===== Certifications ===== */
.cert-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.cert {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.95rem;
  transition: border-color .25s ease, transform .25s ease;
}
.cert:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}
.cert-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ===== Contact ===== */
.contact-lead {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 560px;
  margin: -32px 0 48px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .25s ease, transform .25s ease, background .25s ease;
}
.contact-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
  transform: translateY(-4px);
}
.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.contact-icon svg {
  width: 20px;
  height: 20px;
}
.contact-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.contact-value {
  font-size: 1rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-faint);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-photo { order: -1; }
  .hero-photo-frame { width: min(220px, 60%); }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .skills-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .timeline { padding-left: 0; }
  .timeline::before { left: 5px; }
  .job {
    grid-template-columns: 1fr;
    margin-left: 0;
    padding-left: 26px;
  }
  .job-meta { text-align: left; padding-right: 0; margin-bottom: 8px; }
  .job-body { padding-left: 0; }
  .job-body::before { left: -26px; }
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(80vw, 320px);
    height: 100vh;
    background: var(--bg-alt);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 32px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform .3s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links > li { width: 100%; }
  .nav-links > li > a:not(.btn) { width: 100%; padding: 14px 8px; }
  .btn-ghost { margin-left: 8px; margin-top: 12px; }

  .section { padding: 80px 0; }
  .hero { padding-top: 110px; }
  .scroll-cue { display: none; }

  .project-top { flex-wrap: wrap; }
}