@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;1,300&family=IBM+Plex+Sans:wght@300;400;500&display=swap');

:root {
  --bg:       #F7F8FA;
  --bg2:      #FFFFFF;
  --border:   #E2E6EF;
  --border2:  #C8D0DF;
  --text:     #1A1F2E;
  --text-dim: #5A6480;
  --text-hint:#9AA0B4;
  --accent:   #0055CC;
  --accent2:  #00A3A3;
  --accent-bg:#E8F0FF;
  --mono:     'IBM Plex Mono', monospace;
  --sans:     'IBM Plex Sans', sans-serif;
  --radius:   6px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247,248,250,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex; align-items: center; gap: 0; height: 52px;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-decoration: none;
  margin-right: auto;
}

.nav-logo span { color: var(--text-hint); font-weight: 300; }

.nav-links { display: flex; gap: 0; }

.nav-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0 1.1rem;
  height: 52px;
  display: flex; align-items: center;
  border-bottom: 2px solid transparent;
  letter-spacing: 0.04em;
  transition: color 0.15s, border-color 0.15s;
}

.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── LAYOUT ── */
.page { max-width: 960px; margin: 0 auto; padding: 4rem 2rem 6rem; }

/* ── TERMINAL PROMPT ── */
.prompt {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-hint);
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}
.prompt::before { content: '$ '; color: var(--accent2); }

/* ── HEADINGS ── */
h1 {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

h1 .accent { color: var(--accent); }

h2 {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-hint);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: 0.6rem;
}
h2::after { content: ''; flex: 1; height: 1px; background: var(--border); }

h3 {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
}

p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.75; }

/* ── CARDS ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: var(--border2);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

/* ── TAG ── */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: var(--accent-bg);
  color: var(--accent);
  letter-spacing: 0.04em;
}

.tag.teal { background: #E0F7F7; color: var(--accent2); }
.tag.grey { background: var(--border); color: var(--text-dim); }

/* ── DIVIDER ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* ── LINKS ── */
a.link {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.8rem;
}
a.link:hover { text-decoration: underline; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-hint);
  letter-spacing: 0.06em;
}

/* ── ANIMATIONS ── */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.5s ease forwards;
}
.fade-in:nth-child(1) { animation-delay: 0.05s; }
.fade-in:nth-child(2) { animation-delay: 0.12s; }
.fade-in:nth-child(3) { animation-delay: 0.19s; }
.fade-in:nth-child(4) { animation-delay: 0.26s; }
.fade-in:nth-child(5) { animation-delay: 0.33s; }
.fade-in:nth-child(6) { animation-delay: 0.40s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ── CURSOR BLINK ── */
.cursor::after {
  content: '▋';
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-size: 0.9em;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  h1 { font-size: 1.5rem; }
  .page { padding: 2.5rem 1.2rem 4rem; }
  nav { padding: 0 1.2rem; }
  .nav-links a { padding: 0 0.7rem; font-size: 0.72rem; }
}