:root {
  --bg: #0b0f14;
  --bg-alt: #10151c;
  --card: #131a22;
  --border: #232b35;
  --text: #e8edf2;
  --text-dim: #9aa7b4;
  --accent: #4fd1c5;
  --accent-2: #7c9eff;
  --max-width: 1080px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fb;
    --bg-alt: #ffffff;
    --card: #ffffff;
    --border: #e3e8ee;
    --text: #10151c;
    --text-dim: #566270;
    --accent: #0f9c8f;
    --accent-2: #3f5fd9;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  scroll-behavior: smooth;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
nav.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
nav.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.nav-brand { font-weight: 700; letter-spacing: 0.02em; color: var(--text); flex-shrink: 0; }
.nav-links { display: flex; gap: 20px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a { color: var(--text-dim); font-size: 0.92rem; white-space: nowrap; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

@media (max-width: 640px) {
  nav.site-nav .container { gap: 14px; }
  .nav-links { gap: 14px; font-size: 0.85rem; }
}

/* Hero */
.hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 640px) {
  .hero { padding: 48px 0 40px; }
  section { padding: 40px 0; }
  .hero-meta { font-size: 0.85rem; gap: 8px 16px; }
  .hero-actions .btn { flex: 1 1 auto; text-align: center; }
}
.hero-eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 8px;
  line-height: 1.1;
}
.hero .role {
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  color: var(--text-dim);
  margin-bottom: 20px;
}
.hero .tagline {
  max-width: 640px;
  color: var(--text-dim);
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 28px;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.94rem;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #06201c;
}
.btn-primary:hover { opacity: 0.9; }
.btn-outline {
  border-color: var(--border);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* Sections */
section { padding: 64px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }
.section-title {
  font-size: 1.6rem;
  margin: 0 0 8px;
}
.section-sub {
  color: var(--text-dim);
  margin: 0 0 36px;
  max-width: 640px;
}

/* About */
.about-text { color: var(--text-dim); max-width: 760px; }

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.skill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
}
.skill-card h3 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tag {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: 36px; }
.timeline-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
}
.timeline-date {
  color: var(--text-dim);
  font-size: 0.86rem;
  font-weight: 600;
  padding-top: 4px;
}
.timeline-content h3 { margin: 0 0 2px; font-size: 1.1rem; }
.timeline-content .subtitle { color: var(--accent); font-size: 0.9rem; margin-bottom: 4px; }
.timeline-content .loc { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 10px; }
.timeline-content .desc { color: var(--text-dim); margin-bottom: 12px; }
.timeline-content ul { margin: 0; padding-left: 20px; color: var(--text-dim); }
.timeline-content li { margin-bottom: 6px; font-size: 0.92rem; }

@media (max-width: 640px) {
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.project-thumb {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  font-weight: 700;
  color: #ffffffcc;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.project-body { padding: 18px 20px; flex: 1; display: flex; flex-direction: column; }
.project-body h3 { margin: 0 0 4px; font-size: 1.05rem; }
.project-client { color: var(--accent); font-size: 0.78rem; font-weight: 600; margin-bottom: 8px; }
.project-body p { color: var(--text-dim); font-size: 0.9rem; margin: 0 0 14px; flex: 1; }
.project-link { display: inline-block; margin-top: 12px; font-size: 0.85rem; font-weight: 600; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-tag {
  font-size: 0.72rem;
  color: var(--text-dim);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
}
.featured-badge {
  position: absolute;
  margin: 10px;
  background: var(--bg);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--accent);
}
.project-thumb-wrap { position: relative; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.contact-info p { color: var(--text-dim); }
.contact-links { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
form.contact-form { display: flex; flex-direction: column; gap: 14px; }
.contact-form input, .contact-form textarea {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.94rem;
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-status { font-size: 0.88rem; min-height: 20px; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #ff6b6b; }

@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
}

footer {
  padding: 32px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}