:root {
  --bg: #06070d;
  --panel: #0e1019;
  --panel-soft: #151827;
  --text: #f7f7fb;
  --muted: #a3a7b7;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #f0b45b;
  --accent-2: #ffdf96;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(240, 180, 91, 0.14), transparent 32rem),
    radial-gradient(circle at 15% 80%, rgba(255, 255, 255, 0.05), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}

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

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

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 270px;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
  background: rgba(6, 7, 13, 0.92);
  backdrop-filter: blur(22px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 20;
}

.email-link {
  color: var(--muted);
  font-size: 0.92rem;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.06em;
  align-self: flex-start;
  transition: color 180ms ease;
}

.email-link:hover {
  color: var(--accent);
}

.side-nav {
  display: grid;
  gap: 0.9rem;
  margin: 3rem 0;
}

.side-nav a {
  color: var(--muted);
  font-weight: 650;
  letter-spacing: 0.02em;
  padding: 0.65rem 0;
  position: relative;
  transition: color 180ms ease, transform 180ms ease;
}

.side-nav a::before {
  content: "";
  width: 0;
  height: 2px;
  background: var(--accent);
  position: absolute;
  left: 0;
  bottom: 0.25rem;
  transition: width 180ms ease;
}

.side-nav a:hover,
.side-nav a.active {
  color: var(--text);
  transform: translateX(6px);
}

.side-nav a:hover::before,
.side-nav a.active::before {
  width: 34px;
}

.sidebar-footer {
  color: #717585;
  font-size: 0.85rem;
}

.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 40;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
}

.page-content {
  margin-left: 270px;
}

.section {
  width: min(1120px, calc(100% - 64px));
  min-height: auto;
  margin: 0 auto;
  padding: 105px 0;
  border-bottom: 1px solid var(--line);
}



.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
}

.section-kicker {
  display: inline-flex;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  font-size: 0.82rem;
}

h1,
h2,
h3,
h4 {
  line-height: 1.12;
}

h1 {
  font-size: clamp(4.5rem, 11vw, 10rem);
  letter-spacing: -0.09em;
  margin-left: -0.08em;
  background: linear-gradient(120deg, var(--text), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: clamp(2.1rem, 5vw, 4.5rem);
  letter-spacing: -0.055em;
  margin-bottom: 2.2rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.9rem;
}

p {
  color: var(--muted);
}

.hero-subtitle {
  max-width: 680px;
  font-size: clamp(1.12rem, 2.4vw, 1.55rem);
  margin: 1.2rem 0 2rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.3rem;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.primary-btn {
  background: var(--accent);
  color: #17100a;
}

.secondary-btn {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-3px);
}

.secondary-btn:hover {
  border-color: rgba(240, 180, 91, 0.5);
}

.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.social-row a {
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.social-row a:hover {
  color: var(--text);
  border-color: rgba(240, 180, 91, 0.6);
  transform: translateY(-2px);
}

.hero-card {
  position: relative;
  padding: 1.1rem;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border-radius: calc(var(--radius) + 10px);
  box-shadow: var(--shadow);
}

.profile-art {
  width: 100%;
  border-radius: var(--radius);
  background: var(--panel);
}

.hero-badge {
  position: absolute;
  left: 2rem;
  right: 2rem;
  bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(6, 7, 13, 0.76);
  backdrop-filter: blur(14px);
  border-radius: 18px;
  padding: 1rem;
  text-align: center;
  font-weight: 800;
}

.specialization-grid,
.project-grid,
.resume-grid {
  display: grid;
  gap: 1.35rem;
}

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

.service-card,
.project-card,
.resume-column,
.quote-card,
.article-list article,
.stat-card,
.logo-grid div {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.16);
}

.service-card,
.project-card,
.resume-column,
.quote-card,
.article-list article {
  padding: 1.5rem;
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  margin-bottom: 1.4rem;
  color: #17100a;
  background: var(--accent);
  font-weight: 900;
}

.resume-grid {
  grid-template-columns: 0.85fr 1.15fr;
}

.resume-column h3 {
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.timeline-item {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 1.7rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(240, 180, 91, 0.12);
}

.timeline-date,
.project-type {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.about-section {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.about-copy {
  max-width: 900px;
  text-align: left;
}

.about-copy h2 {
  max-width: 900px;
}

.about-copy p {
  max-width: 1000px;
  font-size: 1.05rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

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

.about-section h2 {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
}

.about-section {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.about-copy {
  max-width: 950px;
  text-align: left;
}

.about-copy h2 {
  max-width: 950px;
}

.about-copy p {
  max-width: 780px;
  font-size: 1.05rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

.education-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
  margin-top: 2.8rem;
  max-width: 900px;
}

.education-card {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.16);
  transition: transform 180ms ease, border-color 180ms ease;
}

.education-card:hover {
  transform: translateY(-5px);
  border-color: rgba(240, 180, 91, 0.5);
}

.education-logo {
  width: 72px;
  height: 72px;
  min-width: 72px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  padding: 0.7rem;
}

.education-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.education-content {
  flex: 1;
}

.education-year {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.7rem;
}

.education-card h3 {
  color: var(--text);
  font-size: 1.25rem;
  margin-bottom: 0.7rem;
}

.education-card p {
  margin: 0;
  font-size: 0.98rem;
}

@media (max-width: 780px) {
  .education-cards {
    grid-template-columns: 1fr;
  }

  .education-card {
    flex-direction: column;
  }

  .education-logo {
    width: 64px;
    height: 64px;
    min-width: 64px;
  }
}

@media (max-width: 780px) {
  .education-cards {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  min-height: 125px;
  display: grid;
  place-items: center;
  text-align: center;
}

.stat-card strong {
  display: block;
  color: var(--accent-2);
  font-size: 2.2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

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

.project-card {
  min-height: 270px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 180ms ease, border-color 180ms ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(240, 180, 91, 0.5);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.tag-row span {
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.logo-grid div {
  min-height: 110px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-weight: 800;
}

.robonics-section h2 {
  margin-bottom: 2rem;
}

.robonics-body {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: stretch;
}

.robonics-text-card {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.16);
  display: flex;
  align-items: center;
}

.robonics-text-card p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin: 0;
}

.robonics-image-card {
  height: 100%;
  min-height: 300px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.16);
}

.robonics-image-card img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  display: block;
}

@media (max-width: 900px) {
  .robonics-body {
    grid-template-columns: 1fr;
  }

  .robonics-image-card {
    min-height: 260px;
  }

  .robonics-image-card img {
    min-height: 260px;
  }
}
.article-list {
  display: grid;
  gap: 1rem;
}

.article-list article h3 {
  margin-bottom: 0.4rem;
}

.contact-section {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 0;
}

.contact-section p {
  max-width: 620px;
  font-size: 1.1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

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

.delay-2 {
  transition-delay: 180ms;
}

@media (max-width: 1040px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 220ms ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-menu-btn {
    display: inline-grid;
    place-items: center;
  }

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

  .section {
    width: min(100% - 36px, 980px);
    padding: 82px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 90px;
  }

  .hero-card {
    max-width: 520px;
  }
}
.site-footer {
  width: min(1120px, calc(100% - 64px));
  margin: 0 auto;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-footer p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}
@media (max-width: 780px) {
  .specialization-grid,
  .resume-grid,
  .about-section,
  .project-grid,
  .logo-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: clamp(4rem, 21vw, 7rem);
  }

  .hero-badge {
    position: static;
    margin-top: 1rem;
  }

  .email-link {
    writing-mode: horizontal-tb;
    transform: none;
  }
}