:root {
  --bg: #0a0e14;
  --bg-alt: #0e131b;
  --card: #121924;
  --card-border: #1f2937;
  --text: #e6edf3;
  --muted: #8b96a5;
  --accent: #22d3ee;
  --accent2: #7ee787;
  --accent-dim: rgba(34, 211, 238, 0.12);
  --max-width: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; }

/* ---------- Background grid / glow ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(34,211,238,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

.bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  background: radial-gradient(closest-side, rgba(34,211,238,0.16), transparent);
  z-index: -1;
  pointer-events: none;
}

/* ---------- Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(10, 14, 20, 0.75);
  border-bottom: 1px solid var(--card-border);
  transition: background 0.2s ease;
}

.brand {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.brand a.logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand a.logo .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  flex-shrink: 0;
}

nav.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.15s ease;
}

nav.main-nav a:hover { color: var(--accent); }

nav.main-nav a.cta {
  color: var(--bg);
  background: var(--accent);
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
}

nav.main-nav a.cta:hover { background: var(--accent2); color: var(--bg); }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 14px;
  border-left: 1px solid var(--card-border);
}

.lang-switch a {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.lang-switch a.active,
.lang-switch a:hover {
  color: var(--accent);
}

.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);
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  padding: 110px 0 90px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--accent2);
  background: rgba(126, 231, 135, 0.08);
  border: 1px solid rgba(126, 231, 135, 0.25);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin: 0 0 20px;
  letter-spacing: -0.03em;
  font-weight: 800;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.1s forwards;
}

.hero h1 .accent-text {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--muted);
  font-size: 1.1rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.2s forwards;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.3s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #051016;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(34, 211, 238, 0.35);
}

.btn-ghost {
  border-color: var(--card-border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Marquee tech strip ---------- */
.tech-strip {
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 22px 0;
  overflow: hidden;
  white-space: nowrap;
}

.tech-track {
  display: inline-flex;
  gap: 48px;
  animation: scrollLeft 24s linear infinite;
}

.tech-track span {
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

@keyframes scrollLeft {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Section shared ---------- */
section {
  padding: 100px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-head .kicker {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: block;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.section-head p {
  color: var(--muted);
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: center;
}

.avatar {
  width: 200px;
  height: 200px;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.2rem;
  font-weight: 800;
  color: #051016;
  position: relative;
}

.avatar::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 34px;
  border: 1px dashed rgba(34, 211, 238, 0.4);
  animation: spin 18s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.about-text .stats {
  display: flex;
  gap: 40px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.about-text .stat b {
  display: block;
  font-size: 1.7rem;
  color: var(--accent);
}

.about-text .stat span {
  color: var(--muted);
  font-size: 0.88rem;
}

/* ---------- Services ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}

.card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.95rem;
}

/* ---------- Skills ---------- */
.pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.pill {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-border);
  font-size: 0.9rem;
  color: var(--text);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

/* ---------- Projects ---------- */
.project-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.project-card .body { padding: 22px; }

.project-card h3 { margin: 0 0 8px; font-size: 1.05rem; }

.project-card p { color: var(--muted); font-size: 0.9rem; margin: 0 0 14px; }

.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }

.tag-row span {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
}

/* ---------- Process timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.timeline .step {
  text-align: center;
  position: relative;
}

.timeline .num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 16px;
}

.timeline h3 { font-size: 1rem; margin: 0 0 8px; }
.timeline p { color: var(--muted); font-size: 0.88rem; margin: 0; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info .item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-info .item .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info .item a, .contact-info .item span.val {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.contact-info .item small {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

form.contact-form {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  gap: 16px;
}

form.contact-form label {
  font-size: 0.85rem;
  color: var(--muted);
  display: block;
  margin-bottom: 6px;
}

form.contact-form input,
form.contact-form textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

form.contact-form input:focus,
form.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

form.contact-form button {
  cursor: pointer;
  border: none;
}

.form-note {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 32px 0;
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer.site-footer .socials { display: flex; gap: 16px; }
footer.site-footer .socials a { color: var(--muted); text-decoration: none; }
footer.site-footer .socials a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .about-grid .avatar { margin: 0 auto; }
  .about-text .stats { justify-content: center; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-auto { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  nav.main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10,14,20,0.98);
    border-bottom: 1px solid var(--card-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    gap: 18px;
    display: none;
  }
  nav.main-nav.open { display: flex; }
  nav.main-nav a.cta { align-self: flex-start; }
  .lang-switch { border-left: none; padding-left: 0; }
  .nav-toggle { display: flex; }
  .hero { padding: 70px 0 60px; }
  .timeline { grid-template-columns: 1fr 1fr; }
  section { padding: 70px 0; }
}