/* styles.css — CIS132 Project 1–4: 2‑column fluid layout */
:root{
  --bg: #0f172a;
  --panel: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --brand: #60a5fa;
  --brand-strong: #3b82f6;
  --accent: #a78bfa;
  --card: #0b1020;
  --border: #1f2937;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, var(--bg), #0b132b 60%);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  line-height: 1.5;
}

.wrapper{
  max-width: 1100px;
  margin-inline: auto;
  padding: 1rem;
}

header{
  background: radial-gradient(1200px 400px at 10% -10%, #1b2a4a, transparent 70%);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(6px);
}

header .branding{
  display: flex;
  align-items: baseline;
    justify-content: center;
    align-items: center;
  gap: .75rem;
}

header h1{
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  margin: .25rem 0 .5rem;
  letter-spacing: .2px;
}

header p.tagline{
  margin: 0 0 .75rem;
  color: var(--muted);
  font-size: .95rem;
}

/* NAV */
nav{
  border-top: 1px solid var(--border);
  margin-top: .5rem;
  padding-top: .5rem;
}

nav ul{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  padding: 0;
}

nav a{
  display: inline-block;
  padding: .55rem .9rem;
  background: #0c1326;
  border: 1px solid var(--border);
  border-radius: .65rem;
  text-decoration: none;
  color: var(--text);
  transition: transform .12s ease, background .15s ease, border-color .2s ease;
}

nav a:hover{
  background: #141d39;
  transform: translateY(-1px);
}

nav a:focus{
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

nav a.active{
  background: linear-gradient(180deg, #172554, #0b1226);
  border-color: #2b3a64;
  box-shadow: 0 0 0 2px rgba(59,130,246,.18) inset;
}

/* MAIN LAYOUT */
main, aside{
  background: #0c1326;
  border: 1px solid var(--border);
  border-radius: .9rem;
  padding: 1rem;
}

.grid-2{
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 1rem;
  margin-block: 1rem;
}

/* Fluid + responsive */
@media (max-width: 800px){
  .grid-2{ grid-template-columns: 1fr; }
}

/* Content helpers */
.prose h2{ margin-top: 0; }
.prose p{ margin: .5rem 0 1rem; }
.prose ul{ margin: .5rem 0 1rem 1rem; }

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .85rem;
  padding: .9rem;
  margin: .75rem 0;
}

footer{
  margin-top: 1rem;
  padding: 1.25rem;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: #0a0f20;
  border-radius: .9rem;
}


/* Assignment requirement: Centered layout on body */
body{
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}


/* Center the 'Skills' section per user's request */
.skills-title{ text-align:center; }
.skills-list{
  text-align:center;
  list-style-position: inside;
}