:root {
  --bg: #040917;
  --bg-soft: #071126;
  --card: rgba(9, 19, 42, 0.82);
  --line: rgba(110, 160, 255, 0.16);
  --text: #edf4ff;
  --muted: #9bb0d1;
  --primary: #59c7ff;
  --primary-2: #2e83ff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(67, 149, 255, 0.12), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(52, 242, 255, 0.09), transparent 26%),
    linear-gradient(180deg, #050b1b 0%, #040917 100%);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent 30%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
  opacity: 0.35;
}

.bg-orb {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
  opacity: 0.55;
}

.orb-1 { top: -80px; left: -60px; background: rgba(32, 136, 255, 0.22); }
.orb-2 { right: -120px; top: 70px; background: rgba(31, 211, 255, 0.12); }

.container {
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  background: rgba(4, 9, 23, 0.7);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.header-inner {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 82px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: 999px;
  background: rgba(10, 21, 45, 0.65);
  border: 1px solid rgba(110, 160, 255, 0.14);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.96rem;
  padding: 10px 16px;
  border-radius: 999px;
  transition: 0.25s ease;
}

.main-nav a:hover { color: var(--text); background: rgba(255,255,255,0.04); }

.language-switch {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  gap: 4px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.lang-btn {
  border: none;
  cursor: pointer;
  padding: 10px 14px;
  min-width: 50px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  font-family: inherit;
  transition: 0.25s ease;
}

.lang-btn.active {
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #04111f;
}

.hero {
  min-height: calc(100vh - 82px);
  display: flex;
  align-items: center;
  padding: 80px 0 110px;
}

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

.eyebrow,
.section-tag,
.project-type {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 18px 0 12px;
  font-size: clamp(4rem, 9vw, 6.2rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

.hero-role {
  margin: 0;
  font-size: clamp(1.35rem, 2.2vw, 1.95rem);
  font-weight: 700;
  color: #d9ecff;
}

.hero-text {
  margin: 20px 0 0;
  max-width: 34ch;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #04111f;
  box-shadow: 0 12px 30px rgba(70, 157, 255, 0.22);
}
.btn-primary:hover { transform: translateY(-2px); }

.btn-secondary {
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.02);
}

.btn-secondary:hover {
  border-color: rgba(255,255,255,0.26);
  background: rgba(255,255,255,0.05);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  color: var(--muted);
}
.hero-links a,
.hero-links span,
.contact-links a { color: inherit; text-decoration: none; }
.hero-links a:hover,
.contact-links a:hover { color: var(--text); }

.section { padding: 78px 0; }
.about-section { padding-top: 24px; }

.section-heading { margin-bottom: 28px; }
.section-heading h2 {
  margin: 12px 0 0;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}
.compact-heading h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 24px;
  align-items: stretch;
}
.about-text {
  padding: 28px 30px;
  display: grid;
  gap: 18px;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.85;
}
.about-text p { margin: 0; }

.minimal-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  align-content: start;
}
.highlight-card {
  padding: 30px 24px;
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.highlight-card strong {
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1;
}
.highlight-card span {
  margin-top: 12px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.45;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.project-visual {
  min-height: 220px;
  background: linear-gradient(180deg, rgba(88, 199, 255, 0.08), rgba(10, 21, 45, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border-bottom: 1px solid var(--line);
}
.project-visual img {
  width: 100%;
  height: auto;
  display: block;
}
.project-content {
  padding: 24px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.project-content h3 {
  margin: 0;
  font-size: 1.75rem;
  line-height: 1.12;
}
.project-content p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.timeline { display: grid; gap: 18px; }
.timeline-item { padding: 28px; }
.timeline-item.featured { padding: 30px 28px; }
.timeline-item.compact { padding: 18px 22px; }

.timeline-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}
.timeline-head h3 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.2;
}
.timeline-head p {
  margin: 10px 0 0;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.18rem;
}
.timeline-head span {
  color: var(--muted);
  font-size: 1.08rem;
  white-space: nowrap;
}
.timeline-item > p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.8;
  max-width: 88ch;
}

.internships {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.timeline-item.compact .timeline-head h3 { font-size: 1.2rem; }
.timeline-item.compact .timeline-head p { font-size: 1rem; margin-top: 8px; }
.timeline-item.compact .timeline-head span { font-size: 0.96rem; }

.contact-box {
  padding: 34px 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
}
.contact-box h2 {
  margin: 12px 0 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}
.contact-box p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 44ch;
}
.contact-links {
  display: grid;
  gap: 12px;
  text-align: right;
  color: #d6e5ff;
  font-size: 1.05rem;
}

@media (max-width: 1080px) {
  .about-grid,
  .projects-grid,
  .contact-box,
  .internships {
    grid-template-columns: 1fr;
  }
  .minimal-highlights { grid-template-columns: repeat(2, 1fr); }
  .contact-links { text-align: left; }
}

@media (max-width: 820px) {
  .header-inner {
    flex-direction: column;
    gap: 14px;
    padding: 16px 0;
  }
  .language-switch {
    position: static;
    transform: none;
  }
  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
    border-radius: 22px;
  }
  .hero {
    min-height: auto;
    padding-top: 84px;
    padding-bottom: 80px;
  }
  .hero h1 { font-size: clamp(3.2rem, 16vw, 5rem); }
  .about-grid,
  .minimal-highlights,
  .timeline-head {
    grid-template-columns: 1fr;
  }
  .timeline-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .timeline-head span { white-space: normal; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1140px); }
  .section { padding: 56px 0; }
  .card { border-radius: 24px; }
  .hero-links { gap: 12px 16px; }
  .hero-actions { width: 100%; }
  .btn { width: 100%; }
  .highlight-card,
  .about-text,
  .project-content,
  .timeline-item,
  .contact-box { padding-left: 22px; padding-right: 22px; }
  .highlight-card { min-height: 140px; }
  .project-visual { min-height: 180px; padding: 18px; }
  .project-content h3 { font-size: 1.5rem; }
}