:root {
  --bg: #0f1724;
  --card: #0b1220;
  --muted: #9aa4b2;
  --accent: #7dd3fc;
  --text: #e6eef6;
}

html {
  height: 100%;
  scroll-behavior: smooth;
  overscroll-behavior-y: none;
}

body {
  min-height: 100vh;
  overscroll-behavior-y: none;
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, var(--bg), #071022);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* Layout container */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header */
.site-header {
  background: transparent;
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.4px;
  transition: text-shadow 180ms ease;
}

.logo:hover {
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 1.2rem;
  margin-left: 1rem;
  display: inline-block;
  position: relative;
  transition: color 180ms ease, transform 180ms ease;
}

.nav a:hover,
.nav a:focus {
  color: var(--text);
  background-size: 100% 100%;
  transform: translateY(-1px);
  outline-offset: 3px;
  text-shadow: 0 0 5px rgba(0, 128, 255, 1);
}

/* Hero */
.hero {
  padding: 3rem 0;
  text-align: left;
}

/* Hero layout: content + photo */
.hero-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.hero-content {
  flex: 1 1 auto;
}

.hero-photo {
  flex: 0 0 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-photo img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 6px 18px rgba(2,6,23,0.6);
  border: 2px solid rgba(255,255,255,0.04);
}

.lead {
  color: var(--muted);
  max-width: 54ch;
}

.cta-row {
  margin-top: 1rem;
}

.btn {
  background: var(--accent);
  color: #082026;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  margin-right: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  line-height: 1;
  overflow: visible;
}

.btn svg {
  width: 1em;
  height: 1em;
  display: block;
  transform-origin: center;
  transform: scale(1.4);
}

.btn.ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text);
}

/* Sections */
.about,
.projects,
.experience,
.languages,
.contact {
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.008));
  padding: 1rem;
  border-radius: 10px;
}

.card h4 {
  margin: 0 0 0.5rem 0;
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.skills-list li {
  background: rgba(255, 255, 255, 0.03);
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
}

/* Footer */
.site-footer {
  padding: 1rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  text-align: center;
  color: var(--muted);
}

.site-footer .container {
  padding: 0.5rem 0;
}

.link {
  color: var(--accent);
  text-decoration: none;
}

.link:hover {
  text-shadow: 0 0 5px rgba(0, 128, 255, 1);
}

.logo-anchor {
  color: white;
  text-decoration: none;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    margin-top: 0.5rem;
  }
  .hero-inner {flex-direction:column;gap:1rem}
  .hero-photo {flex:0 0 auto}
}

/* Small accessibility improvements */
.btn:hover {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn:focus {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}