:root {
  --bg: #071019;
  --surface: #0d1b2a;
  --surface-soft: #153245;
  --text: #e6f0ff;
  --muted: #92a5c5;
  --primary: #4fc3f7;
  --primary-dark: #33a4d6;
  --border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, rgba(79, 195, 247, 0.14), transparent 35%),
    #071019;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(7, 16, 25, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-toggle {
  display: none;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
}

.nav-menu {
  display: flex;
  gap: 1.4rem;
}

.nav-menu a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--text);
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  align-items: center;
  padding: 4rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.9rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 0.95;
}

.hero-copy {
  max-width: 36rem;
  margin: 1.5rem 0 2rem;
  color: var(--muted);
  line-height: 1.8;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.primary {
  background: var(--primary);
  color: #071019;
}

.secondary {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.12);
}

.hero-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 2rem;
  min-height: 280px;
  display: grid;
  place-content: center;
  color: var(--text);
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
}

.section-header {
  max-width: 40rem;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  margin: 0;
  font-size: 2.5rem;
}

.section-header p {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2rem;
  align-items: center;
}

.section-image {
  display: grid;
  place-items: center;
}

.photo-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 360px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(79,195,247,0.18), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.08);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 0.8rem;
}

.about-list li {
  color: var(--muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.75rem;
  display: grid;
  gap: 1rem;
}

.project-card h3 {
  margin: 0;
}

.project-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.project-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.skill-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem 1.2rem;
  border-radius: 16px;
  color: var(--text);
  text-align: center;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 2.5rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem 1.1rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(79, 195, 247, 0.5);
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .section-grid,
  .contact-card {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    width: 100%;
    flex-direction: column;
    gap: 0.8rem;
    display: none;
    margin-top: 1rem;
  }

  .nav-menu.active {
    display: flex;
  }

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