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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3e;
  --accent: #7c6aff;
  --accent2: #00d4ff;
  --text: #e2e4f0;
  --muted: #8b8fa8;
  --card-bg: #161925;
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'Cascadia Code', 'Fira Code', Consolas, monospace;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; min-height: 100vh; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent2); }

/* NAVBAR */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,17,23,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-brand { font-size: 1.25rem; font-weight: 700; background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--muted); font-size: .95rem; font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }

/* HERO */
.hero {
  padding: 7rem 2rem 5rem;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124,106,255,.15) 0%, transparent 70%);
}
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; line-height: 1.15; margin-bottom: 1rem; }
.hero h1 span { background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.15rem; color: var(--muted); max-width: 560px; margin: 0 auto 2rem; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem; border-radius: 8px; font-weight: 600; font-size: .95rem;
  transition: opacity .2s, transform .2s;
}
.btn:hover { opacity: .85; transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), #5b4fcf); color: #fff; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: var(--surface); }
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* SECTIONS */
.section { max-width: 1100px; margin: 0 auto; padding: 4rem 2rem; }
.section-title { font-size: 1.6rem; font-weight: 700; margin-bottom: .4rem; }
.section-sub { color: var(--muted); margin-bottom: 2rem; font-size: .95rem; }

/* SKILLS */
.skills { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2rem; }
.skill { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: .35rem .85rem; font-size: .85rem; color: var(--muted); }

/* PROJECTS */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; transition: border-color .25s, transform .25s; display: flex; flex-direction: column; }
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card-tag { display: inline-block; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; padding: .2rem .6rem; border-radius: 4px; background: rgba(124,106,255,.15); color: var(--accent); margin-bottom: 1rem; width: fit-content; }
.card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; }
.card p { color: var(--muted); font-size: .9rem; flex: 1; margin-bottom: 1.25rem; }
.card-meta { display: flex; align-items: center; justify-content: space-between; font-size: .8rem; color: var(--muted); }
.card-link { display: inline-flex; align-items: center; gap: .3rem; font-size: .85rem; font-weight: 600; color: var(--accent); }

/* BLOG INDEX */
.post-list { display: flex; flex-direction: column; gap: 1rem; }
.post-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; transition: border-color .25s; }
.post-item:hover { border-color: var(--accent); }
.post-info h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .25rem; }
.post-info p { color: var(--muted); font-size: .88rem; }
.post-meta { text-align: right; font-size: .8rem; color: var(--muted); white-space: nowrap; }
.post-meta a { display: block; margin-top: .4rem; font-weight: 600; color: var(--accent); font-size: .85rem; }

/* ARTICLE */
.article-wrapper { max-width: 740px; margin: 0 auto; padding: 3rem 2rem 6rem; }
.article-header { margin-bottom: 2.5rem; }
.article-header .tag { font-size: .8rem; color: var(--accent); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; }
.article-header h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; line-height: 1.2; margin: .75rem 0; }
.article-header .meta { color: var(--muted); font-size: .9rem; }
.article-body h2 { font-size: 1.35rem; font-weight: 700; margin: 2rem 0 .75rem; }
.article-body h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 .5rem; }
.article-body p { color: var(--muted); margin-bottom: 1.25rem; font-size: 1rem; }
.article-body pre { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; overflow-x: auto; margin-bottom: 1.5rem; font-family: var(--mono); font-size: .88rem; }
.article-body code { font-family: var(--mono); color: var(--accent2); font-size: .9em; }
pre code { color: var(--text); }
.article-body ul, .article-body ol { padding-left: 1.5rem; color: var(--muted); margin-bottom: 1.25rem; }
.article-body li { margin-bottom: .4rem; }
.back-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--muted); font-size: .9rem; margin-bottom: 2rem; }
.back-link:hover { color: var(--accent); }

/* CONTACT */
.contact-strip { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 3rem 2rem; text-align: center; }
.contact-strip h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: .5rem; }
.contact-strip p { color: var(--muted); margin-bottom: 1.5rem; }
.contact-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* FOOTER */
footer { border-top: 1px solid var(--border); text-align: center; padding: 2rem; color: var(--muted); font-size: .85rem; }

@media (max-width: 600px) {
  .post-item { flex-direction: column; align-items: flex-start; }
  .post-meta { text-align: left; }
  .nav-links { gap: 1rem; }
}