:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --card: #f3f4f6;
  --accent: #2563eb;
  --border: #e5e7eb;
}

body.dark {
  --bg: #0b1220;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --card: #111827;
  --accent: #60a5fa;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(1000px, 92%);
  margin: 0 auto;
  padding: 24px 0 60px;
}

.header {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav {
  width: min(1000px, 92%);
  margin: 0 auto;
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
}

.nav-links {
  margin-left: auto;
  list-style: none;
  display: flex;
  gap: 14px;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.nav-links a:hover { color: var(--text); }

.menu-btn {
  display: none;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text);
}

.theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text);
  cursor: pointer;
}

.hero {
  padding: 40px 0 10px;
}

.greeting { color: var(--muted); margin: 0 0 10px; }
.tagline { color: var(--muted); max-width: 55ch; }

.accent { color: var(--accent); }

.section { padding: 36px 0; border-top: 1px solid var(--border); }
.section h2 { margin-top: 0; }

.primary-btn, .secondary-btn {
  display: inline-block;
  border-radius: 12px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
}

.primary-btn {
  background: var(--accent);
  color: white;
  border-color: transparent;
}

.secondary-btn {
  background: transparent;
  color: var(--text);
}

.about-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  align-items: center;
}

.profile {
  width: 140px;
  height: 140px;
  border-radius: 18px;
  background: var(--card);
  object-fit: cover;
  border: 1px solid var(--border);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--border);
}


.form {
  display: grid;
  gap: 12px;
  max-width: 520px;
}

input, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.form-msg { color: var(--muted); min-height: 20px; }

.footer {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  color: var(--muted);
  text-align: center;
}

/* Mobile */
@media (max-width: 720px) {
  .menu-btn { display: inline-block; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 10px;
    margin-left: 0;
  }
  .nav-links.open { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}
/* Skills */
.section ul {
  padding-left: 18px;
  color: var(--muted);
}

#skills ul {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#skills li {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
}