:root {
  --bg: #05070b;
  --bg-soft: rgba(10, 15, 23, 0.88);
  --panel: rgba(11, 16, 24, 0.82);
  --panel-strong: rgba(12, 18, 27, 0.96);
  --text: #eef4ff;
  --muted: #a5b1c5;
  --dim: #70809a;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #88f4ff;
  --accent-2: #7d82ff;
  --accent-3: #4cf6bd;
  --danger: #cdd5e7;
  --header-h: 72px;
  --radius: 16px;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% 10%, rgba(78, 100, 255, 0.09), transparent 30%),
    radial-gradient(circle at 80% 30%, rgba(44, 209, 255, 0.08), transparent 24%),
    #05070b;
  color: var(--text);
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(to bottom, rgba(5, 7, 11, 0.9), rgba(5, 7, 11, 0.55));
  backdrop-filter: blur(14px);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(136, 244, 255, 0.55);
  color: var(--accent);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.04em;
  background: rgba(255, 255, 255, 0.02);
}

.top-nav {
  display: flex;
  gap: 22px;
  align-items: center;
  flex-wrap: wrap;
}

.top-nav a {
  font-size: 0.9rem;
  color: #d7def0;
  position: relative;
}

.top-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -6px;
  height: 1px;
  background: var(--accent);
  transition: right 0.2s ease;
}

.top-nav a:hover::after,
.top-nav a:focus-visible::after {
  right: 0;
}

main {
  position: relative;
  z-index: 3;
}

.panel-section {
  min-height: 100vh;
  padding: calc(var(--header-h) + 48px) 6vw 72px;
  display: flex;
  align-items: center;
}

.panel-content {
  width: min(1200px, 100%);
  margin: 0 auto;
}

.content-left {
  margin-left: 0;
}

.content-right {
  margin-right: 0;
  margin-left: auto;
}

.narrow {
  max-width: 760px;
}

.wide {
  max-width: 860px;
}

.hero {
  min-height: 100vh;
}

.hero-content {
  max-width: 760px;
  margin-left: 0;
}

.eyebrow,
.section-kicker,
.detail-kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 14px;
}

h1 {
  font-size: clamp(3.6rem, 8vw, 8rem);
  line-height: 0.9;
  margin: 0 0 24px;
  letter-spacing: -0.06em;
}

h2 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 0.95;
  margin: 0 0 18px;
  letter-spacing: -0.05em;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.hero-subtitle,
.section-intro,
.lead {
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  line-height: 1.8;
  color: var(--muted);
}

.hero-mini {
  margin-top: 28px;
  color: var(--dim);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-grid.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.info-card,
.skill-card {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 25, 38, 0.86), rgba(11, 16, 24, 0.94));
  color: var(--text);
  padding: 20px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.info-card:hover,
.info-card:focus-visible,
.skill-card:hover,
.skill-card:focus-visible,
.cert-row:hover,
.cert-row:focus-visible,
.stack-card:hover,
.timeline-card:hover {
  transform: translateY(-3px);
  border-color: rgba(136, 244, 255, 0.55);
  outline: none;
}

.card-tag {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 700;
}

.info-card p,
.stack-card p,
.timeline-card p {
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
}

.small-note {
  margin-top: 18px;
  color: var(--dim);
  line-height: 1.7;
  font-size: 0.95rem;
}

.stack-list,
.timeline,
.cert-list,
.skills-grid {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.stack-card,
.timeline-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 25, 38, 0.82), rgba(10, 15, 22, 0.96));
  padding: 22px;
  box-shadow: var(--shadow);
}

.stack-meta,
.timeline-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.text-link {
  margin-top: 14px;
  padding: 0;
  background: transparent;
  border: none;
  color: #dfe9ff;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--accent);
  outline: none;
}

.cert-row {
  width: 100%;
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  min-height: 80px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 25, 38, 0.82), rgba(10, 15, 22, 0.96));
  color: var(--text);
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.cert-row span {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
}

.cert-row strong {
  display: block;
  font-size: 1rem;
}

.cert-row em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.88rem;
}

.skills-grid {
  grid-template-columns: 1fr;
}

.contact-block {
  margin-top: 24px;
  display: grid;
  gap: 18px;
  max-width: 620px;
}

.contact-line {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 25, 38, 0.82), rgba(10, 15, 22, 0.96));
  box-shadow: var(--shadow);
}

.contact-line span {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.contact-line a {
  color: #f2f7ff;
  font-size: 1rem;
}

.contact-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  background: var(--accent);
  color: #051014;
  font-weight: 800;
  border: 1px solid var(--accent);
}

.contact-button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.progress-meter {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 15;
  display: grid;
  justify-items: center;
  gap: 12px;
}

.progress-track {
  width: 2px;
  height: 220px;
  background: rgba(255, 255, 255, 0.12);
  position: relative;
}

.progress-fill {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2px;
  height: 0%;
  background: linear-gradient(to top, var(--accent), var(--accent-2));
}

.progress-value {
  color: var(--accent);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.detail-panel {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  justify-items: end;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.detail-panel.open {
  opacity: 1;
  pointer-events: auto;
}

.detail-shell {
  position: relative;
  width: min(640px, 100%);
  height: 100%;
  background: var(--panel-strong);
  border-left: 1px solid var(--line);
  padding: 86px 28px 28px;
  transform: translateX(38px);
  transition: transform 0.22s ease;
  overflow-y: auto;
}

.detail-panel.open .detail-shell {
  transform: translateX(0);
}

.close-detail {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-size: 1.8rem;
  cursor: pointer;
}

#detailTitle {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.95;
  margin: 0 0 18px;
  letter-spacing: -0.04em;
}

#detailBody p,
#detailBody li {
  color: var(--muted);
  line-height: 1.75;
}

#detailBody ul {
  padding-left: 20px;
}

.detail-tech {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cert-embed {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.cert-embed iframe {
  width: 100%;
  height: 500px;
  border: 0;
  display: block;
  background: #fff;
}

.cert-fallback {
  margin-top: 14px;
}

.cert-fallback a {
  color: var(--accent);
  font-weight: 700;
}

.final-section {
  padding-bottom: 120px;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 18px;
  }

  .top-nav {
    gap: 12px;
  }

  .top-nav a {
    font-size: 0.8rem;
  }

  .panel-section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .card-grid.two-col {
    grid-template-columns: 1fr;
  }

  .cert-row {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .cert-row em {
    grid-column: 2;
  }
}

@media (max-width: 700px) {
  .top-nav {
    display: none;
  }

  .progress-meter {
    display: none;
  }

  .panel-section {
    min-height: auto;
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 80px;
  }

  .stack-meta,
  .timeline-head {
    flex-direction: column;
    gap: 4px;
  }

  .cert-embed iframe {
    height: 360px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}