:root {
  --bg: #0a1220;
  --bg-elevated: rgba(11, 19, 34, 0.86);
  --surface: rgba(16, 26, 44, 0.78);
  --surface-strong: rgba(21, 34, 57, 0.92);
  --line: rgba(164, 191, 255, 0.12);
  --line-strong: rgba(164, 191, 255, 0.2);
  --text: #edf4ff;
  --muted: #9db0cf;
  --accent: #2f6df6;
  --accent-soft: #73a6ff;
  --accent-2: #58d1c9;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.26);
}

body.light {
  --bg: #eef4ff;
  --bg-elevated: rgba(244, 248, 255, 0.88);
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --line: rgba(41, 78, 150, 0.1);
  --line-strong: rgba(41, 78, 150, 0.16);
  --text: #10203d;
  --muted: #5b6f95;
  --accent: #2457d6;
  --accent-soft: #5e94ff;
  --accent-2: #0f9187;
  --shadow: 0 24px 60px rgba(44, 74, 134, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 12%, rgba(47, 109, 246, 0.18), transparent 24%),
    radial-gradient(circle at 86% 18%, rgba(88, 209, 201, 0.1), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 20%),
    var(--bg);
  overflow-x: hidden;
}

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

button {
  font: inherit;
  cursor: pointer;
}

#bg-canvas,
.page-glow,
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#bg-canvas {
  z-index: -3;
}

.page-glow {
  z-index: -2;
  background:
    radial-gradient(circle at 15% 18%, rgba(47, 109, 246, 0.12), transparent 30%),
    radial-gradient(circle at 84% 22%, rgba(88, 209, 201, 0.08), transparent 26%),
    radial-gradient(circle at 50% 100%, rgba(115, 166, 255, 0.08), transparent 34%);
}

.noise {
  z-index: -1;
  opacity: 0.05;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.16) 0.6px, transparent 0.9px),
    radial-gradient(circle at 80% 60%, rgba(255, 255, 255, 0.12) 0.6px, transparent 0.9px);
  background-size: 24px 24px, 28px 28px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1220px, calc(100% - 32px));
  margin: 18px auto 0;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--bg-elevated);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: #f7fbff;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand-text {
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.nav,
.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav a,
.header-link {
  color: var(--muted);
  transition: color 180ms ease, transform 180ms ease;
}

.nav a:hover,
.header-link:hover,
.project-topline a:hover {
  color: var(--text);
}

.ghost-btn,
.primary-btn,
.secondary-btn,
.filter-btn {
  border-radius: 999px;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.ghost-btn {
  padding: 11px 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

.section {
  width: min(1220px, calc(100% - 32px));
  margin: 0 auto;
  padding: 104px 0;
}

.hero {
  min-height: calc(100vh - 120px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: 34px;
}

.eyebrow,
.card-label,
.timeline-meta,
.panel-kicker {
  margin: 0;
  color: var(--accent-soft);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 800;
}

.hero h1,
.section-heading h2,
.intro-card h2 {
  margin: 0;
  line-height: 0.97;
  letter-spacing: -0.045em;
}

.hero h1 {
  margin-top: 10px;
  max-width: 10ch;
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
}

.hero h1 span,
.section-heading h2 em {
  display: inline-block;
  font-family: "Instrument Serif", serif;
  font-style: italic;
  font-weight: 400;
  color: var(--accent-soft);
}

.hero-text,
.section-heading p,
.glass-card p,
.timeline-item p {
  color: var(--muted);
  line-height: 1.78;
  font-size: 1rem;
}

.hero-text {
  max-width: 62ch;
  margin: 24px 0 0;
}

.hero-actions,
.contact-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 30px 0 0;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: #f7fbff;
  box-shadow: 0 18px 40px rgba(47, 109, 246, 0.24);
}

.secondary-btn,
.filter-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

.primary-btn:hover,
.secondary-btn:hover,
.ghost-btn:hover,
.filter-btn:hover {
  transform: translateY(-2px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.metric-card,
.glass-card,
.skills-shell {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 18px 18px 20px;
  border-radius: 22px;
}

.metric-card strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 8px;
}

.metric-card span {
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.94rem;
}

.glass-card,
.skills-shell {
  border-radius: 30px;
  padding: 30px;
}

.intro-card {
  position: relative;
  overflow: hidden;
}

.intro-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -18% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 109, 246, 0.2), transparent 68%);
}

.intro-heading {
  position: relative;
  z-index: 1;
  margin: 18px 0 18px;
}

.intro-card h2 {
  max-width: 10ch;
  font-size: clamp(2rem, 4vw, 3.35rem);
}

.status-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(125, 209, 197, 0.12);
  border: 1px solid rgba(125, 209, 197, 0.2);
  color: var(--text);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 6px rgba(125, 209, 197, 0.12);
}

.signal-list {
  position: relative;
  z-index: 1;
  margin: 20px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin-top: 10px;
}

.about-grid,
.achievement-grid,
.education-grid,
.project-grid,
.reference-grid,
.project-notes {
  display: grid;
  gap: 18px;
}

.about-grid,
.achievement-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.reference-grid,
.project-notes {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.education-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.skills-shell {
  margin-top: 24px;
}

.skills-header h3 {
  margin: 10px 0 6px;
  font-size: 1.7rem;
}

.skills-header p:last-child {
  margin-top: 0;
}

.skills-cloud,
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skills-cloud {
  margin-top: 22px;
}

.skills-cloud span,
.chips span,
.badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
}

.badge {
  color: var(--accent-soft);
  font-size: 0.84rem;
  font-weight: 700;
}

.timeline {
  position: relative;
  display: grid;
  gap: 20px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 22px;
  width: 2px;
  background: linear-gradient(var(--accent), rgba(255, 255, 255, 0));
  opacity: 0.5;
}

.timeline-item {
  position: relative;
  margin-left: 38px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 34px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 8px rgba(47, 109, 246, 0.14);
}

.project-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.filter-btn {
  padding: 11px 16px;
  color: var(--muted);
}

.filter-btn.active {
  color: #f7fbff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
}

.project-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-notes,
.reference-grid {
  margin-top: 24px;
}

.project-card {
  display: flex;
  flex-direction: column;
  min-height: 310px;
  gap: 14px;
}

.note-card {
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.03);
}

.project-card h3,
.note-card h3,
.about-grid h3,
.achievement-grid h3,
.education-grid h3,
.reference-grid h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.15;
}

.project-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.project-topline a {
  color: var(--muted);
}

.chips {
  margin-top: auto;
}

.medal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  padding: 9px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  background: rgba(47, 109, 246, 0.12);
  border: 1px solid rgba(47, 109, 246, 0.18);
  color: var(--accent-soft);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.contact-card {
  text-align: center;
  padding: 42px;
}

.contact-card h2 {
  margin: 12px auto 18px;
  max-width: 18ch;
  font-size: clamp(2.2rem, 4.4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.contact-card p {
  max-width: 62ch;
  margin: 0 auto;
}

.contact-links {
  justify-content: center;
}

.site-footer {
  padding: 0 20px 36px;
  text-align: center;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 100ms;
}

.delay-2 {
  transition-delay: 200ms;
}

.hidden-project {
  display: none;
}

@media (max-width: 1100px) {
  .hero,
  .project-grid,
  .about-grid,
  .achievement-grid,
  .education-grid,
  .hero-metrics,
  .reference-grid,
  .project-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
  }

  .hero-copy {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .site-header,
  .section {
    width: min(1220px, calc(100% - 20px));
  }

  .site-header {
    margin-top: 10px;
    padding: 14px 16px;
  }

  .brand-text,
  .nav {
    display: none;
  }

  .section {
    padding: 78px 0;
  }

  .hero,
  .project-grid,
  .about-grid,
  .achievement-grid,
  .education-grid,
  .hero-metrics,
  .reference-grid,
  .project-notes {
    grid-template-columns: 1fr;
  }

  .glass-card,
  .skills-shell,
  .contact-card,
  .note-card {
    padding: 24px;
    border-radius: 24px;
  }

  .hero h1 {
    max-width: 9.5ch;
    font-size: clamp(2.8rem, 16vw, 4.4rem);
  }

  .section-heading h2,
  .contact-card h2 {
    font-size: clamp(2rem, 12vw, 3.2rem);
  }

  .header-actions {
    gap: 10px;
  }

  .header-link,
  .ghost-btn,
  .primary-btn,
  .secondary-btn {
    font-size: 0.94rem;
  }
}