/* Nexus — cyber-tech portfolio theme */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Syne:wght@500;600;700;800&display=swap');

:root {
  --primary: #22d3ee;
  --secondary: #0ea5e9;
  --accent: #06b6d4;
  --text: #e0f2fe;
  --text-muted: #94a3b8;
  --bg: #020617;
  --bg-alt: #0f172a;
  --border: rgba(34,211,238,0.15);
  --radius: 8px;
  --shadow: 0 0 40px rgba(34,211,238,0.08);
  --font-heading: 'Syne', system-ui, sans-serif;
  --font-body: 'JetBrains Mono', monospace;
}

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

body.pb-public-page, body.pb-preview-page {
  font-family: var(--font-body);
  color: var(--text);
  line-height: 1.65;
  background: var(--bg);
  font-size: 0.92rem;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }

@keyframes pb-fade-up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pb-scan { 0% { transform: translateY(-100%); } 100% { transform: translateY(100vh); } }
@keyframes pb-pulse-border { 0%, 100% { border-color: rgba(34,211,238,0.2); } 50% { border-color: rgba(34,211,238,0.6); } }

.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(2,6,23,0.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.navbar.scrolled { box-shadow: 0 0 30px rgba(34,211,238,0.1); }
.nav-container { max-width: 1160px; margin: 0 auto; padding: 0.85rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
.nav-brand { font-family: var(--font-heading); font-weight: 800; font-size: 1.15rem; color: var(--primary); text-transform: uppercase; letter-spacing: 0.08em; }
.nav-brand::before { content: '> '; color: var(--accent); opacity: 0.7; }
.nav-menu { display: flex; list-style: none; gap: 1.5rem; }
.nav-menu a { text-decoration: none; color: var(--text-muted); font-size: 0.78rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; transition: color 0.25s, text-shadow 0.25s; }
.nav-menu a:hover { color: var(--primary); text-shadow: 0 0 12px rgba(34,211,238,0.5); }
.nav-toggle { display: none; cursor: pointer; color: var(--primary); font-size: 1.35rem; }

.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 6rem 1.5rem 4rem; position: relative; overflow: hidden;
  background:
    linear-gradient(rgba(34,211,238,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.03) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
}
.hero::after {
  content: ''; position: absolute; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.3; animation: pb-scan 8s linear infinite; pointer-events: none;
}
.hero-content { position: relative; z-index: 1; animation: pb-fade-up 0.8s cubic-bezier(0.22,1,0.36,1) both; }
.hero-image {
  width: 150px; height: 150px; border-radius: 8px; object-fit: cover; margin-bottom: 1.75rem;
  border: 1px solid var(--border); box-shadow: 0 0 30px rgba(34,211,238,0.2);
  animation: pb-fade-up 0.8s 0.1s cubic-bezier(0.22,1,0.36,1) both;
}
.hero-image-placeholder {
  width: 150px; height: 150px; border-radius: 8px; margin: 0 auto 1.75rem;
  background: var(--bg-alt); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-size: 2.25rem; color: var(--primary);
  animation: pb-pulse-border 3s ease-in-out infinite, pb-fade-up 0.8s 0.1s cubic-bezier(0.22,1,0.36,1) both;
}
.hero h1 { font-family: var(--font-heading); font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: -0.02em; }
.hero-title { font-size: 0.85rem; color: var(--primary); margin-bottom: 2rem; letter-spacing: 0.2em; text-transform: uppercase; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 0.85rem 1.75rem; border-radius: 4px;
  text-decoration: none; font-weight: 600; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
  transition: all 0.3s;
}
.btn-primary { background: var(--primary); color: var(--bg); box-shadow: 0 0 20px rgba(34,211,238,0.35); }
.btn-primary:hover { box-shadow: 0 0 32px rgba(34,211,238,0.55); transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-secondary:hover { background: rgba(34,211,238,0.1); }

.section { padding: 5rem 0; opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.section.visible { opacity: 1; transform: translateY(0); }
.section:nth-child(even) { background: var(--bg-alt); }
.section-title {
  font-family: var(--font-heading); font-size: clamp(1.5rem, 3vw, 2rem);
  text-align: center; margin-bottom: 3rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--primary);
}
.section-title::before { content: '// '; opacity: 0.5; }
.about-text { max-width: 720px; margin: 0 auto; text-align: center; color: var(--text-muted); }

.experience-grid, .projects-grid, .education-grid, .certifications-grid, .services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem;
}
.experience-card, .project-card, .education-card, .cert-card, .service-card {
  background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.5rem; position: relative; overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.experience-card::before, .project-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--secondary)); opacity: 0; transition: opacity 0.3s;
}
.experience-card:hover, .project-card:hover { transform: translateX(4px); border-color: rgba(34,211,238,0.4); box-shadow: var(--shadow); }
.experience-card:hover::before, .project-card:hover::before { opacity: 1; }
.experience-card h3, .project-content h3, .education-card h3, .cert-card h3, .service-card h3 {
  font-family: var(--font-heading); font-size: 1rem; margin-bottom: 0.35rem; color: var(--text);
}
.company, .institution { color: var(--primary); font-size: 0.82rem; }
.duration, .year, .grade, .cert-date { color: var(--text-muted); font-size: 0.78rem; }
.experience-description, .project-content p { color: var(--text-muted); margin-top: 0.65rem; font-size: 0.85rem; }

.project-image { width: 100%; height: 180px; object-fit: cover; border-radius: 4px; margin-bottom: 1rem; border: 1px solid var(--border); }
.project-image-placeholder {
  width: 100%; height: 180px; background: var(--bg); border: 1px dashed var(--border); border-radius: 4px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; color: var(--primary); font-size: 2rem;
}
.tech-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.85rem 0; }
.tech-tag { background: rgba(34,211,238,0.08); color: var(--primary); padding: 0.25rem 0.65rem; border-radius: 4px; font-size: 0.72rem; border: 1px solid var(--border); }
.project-links { display: flex; gap: 1rem; margin-top: 0.85rem; }
.project-link, .cert-link { color: var(--primary); text-decoration: none; font-size: 0.78rem; }
.cert-card i, .service-card i { color: var(--primary); margin-bottom: 0.65rem; }
.service-price { color: var(--primary); font-weight: 600; margin-top: 0.85rem; }

.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2rem; max-width: 960px; margin: 0 auto; }
.contact-item { margin: 0.5rem 0; color: var(--text-muted); font-size: 0.85rem; }
.contact-item a { color: var(--primary); text-decoration: none; }
.social-links { display: flex; gap: 0.65rem; margin-top: 1.25rem; }
.social-link {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 4px; color: var(--primary); text-decoration: none; transition: all 0.25s;
}
.social-link:hover { background: rgba(34,211,238,0.1); box-shadow: 0 0 16px rgba(34,211,238,0.2); }

.footer { border-top: 1px solid var(--border); text-align: center; padding: 1.75rem; color: var(--text-muted); font-size: 0.78rem; }

@media (max-width: 768px) {
  .nav-menu { position: fixed; left: -100%; top: 56px; flex-direction: column; width: 100%; background: var(--bg-alt); padding: 1.25rem; border-bottom: 1px solid var(--border); transition: 0.3s; }
  .nav-menu.active { left: 0; }
  .nav-toggle { display: block; }
  .contact-layout { grid-template-columns: 1fr; }
}