:root {
  --bg: #08080d;
  --bg-elevated: #111118;
  --bg-card: #14141d;
  --border: rgba(255,255,255,0.08);
  --text: #e8e8f0;
  --text-muted: #9797a8;
  --cyan: #22d3ee;
  --purple: #a78bfa;
  --gradient: linear-gradient(90deg, var(--cyan), var(--purple));
  --radius: 14px;
  --max-width: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(167,139,250,0.18), rgba(34,211,238,0.10) 40%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,13,0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}
.logo .dot { color: var(--cyan); }
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}
.nav a:hover { color: var(--text); }
.nav-cta {
  padding: 8px 18px;
  border: 1px solid var(--cyan);
  border-radius: 100px;
  color: var(--cyan) !important;
}
.nav-cta:hover { background: var(--cyan); color: var(--bg) !important; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
}

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  padding: 120px 0 90px;
  text-align: center;
}
.badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--cyan);
  background: rgba(34,211,238,0.06);
  margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 22px;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  max-width: 620px;
  margin: 0 auto 36px;
  color: var(--text-muted);
  font-size: 1.08rem;
}
.hero-sub strong { color: var(--text); }
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--cyan);
  color: #04141a;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(34,211,238,0.25); }
.btn-outline {
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }
.hero-tags {
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Sections */
.section {
  position: relative;
  z-index: 1;
  padding: 90px 0;
}
.section-alt { background: var(--bg-elevated); }
.eyebrow {
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 40px;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 56px;
}
.about-text { color: var(--text-muted); font-size: 1.02rem; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-top: 1px solid var(--border);
  padding-top: 40px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4px;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
}
.skill-card h3 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--cyan);
}
.skill-card li {
  padding: 6px 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.skill-card li:last-child { border-bottom: none; }

/* Timeline */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}
.timeline-item {
  position: relative;
  padding-bottom: 44px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34,211,238,0.15);
}
.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}
.timeline-head h3 { font-size: 1.1rem; font-weight: 700; }
.timeline-date {
  font-size: 0.82rem;
  color: var(--cyan);
  font-weight: 600;
  white-space: nowrap;
}
.timeline-company {
  color: var(--purple);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.timeline-content p:not(.timeline-company) { color: var(--text-muted); font-size: 0.95rem; }

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.project-card:hover {
  border-color: rgba(34,211,238,0.4);
  transform: translateY(-3px);
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.project-tags span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: var(--purple);
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.25);
  padding: 4px 10px;
  border-radius: 100px;
}
.project-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.project-card p { color: var(--text-muted); font-size: 0.93rem; }

/* Contact */
.contact-lead { color: var(--text-muted); max-width: 560px; margin-bottom: 44px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
}
.form-row { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}
.form-row input, .form-row textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--cyan);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-status {
  margin-top: 14px;
  font-size: 0.9rem;
  min-height: 1.2em;
}
.form-status.ok { color: #4ade80; }
.form-status.err { color: #f87171; }
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-self: start;
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}
.contact-link:hover { border-color: var(--cyan); color: var(--cyan); }
.contact-icon { color: var(--cyan); display: flex; }
.contact-note { color: var(--text-muted); font-size: 0.85rem; margin-top: 6px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* Responsive */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
}

@media (max-width: 700px) {
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    transform: translateY(-150%);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav.open { transform: translateY(0); opacity: 1; }
  .nav-toggle { display: flex; }
  .skills-grid { grid-template-columns: 1fr; }
}