/* ─── Reset & Base ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0a0f;
  --bg-alt:     #0d0d18;
  --surface:    #111122;
  --border:     rgba(0, 255, 136, 0.12);
  --accent:     #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.08);
  --text:       #c9d1d9;
  --text-muted: #6e7681;
  --font:       'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --nav-h:      62px;
  --max-w:      1000px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Utility ───────────────────────────────────────────── */
.accent  { color: var(--accent); }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section { padding: 6rem 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: 1.4rem;
  font-weight: 500;
  color: #e6edf3;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

/* ─── Nav ───────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow 0.3s;
}

.nav.scrolled {
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.04);
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: #e6edf3;
  letter-spacing: -0.02em;
  user-select: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::before {
  content: '> ';
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}

.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::before { opacity: 1; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* ─── Hero ──────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--nav-h) 2rem 2rem;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.hero-greeting {
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.hero-name {
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 700;
  color: #e6edf3;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(0.95rem, 2.5vw, 1.3rem);
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  min-height: 2rem;
}

.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-tagline {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.9;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Background grid */
.hero-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 75% 90% at 100% 50%, black 0%, transparent 65%);
  opacity: 0.5;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: 4px;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  letter-spacing: 0.03em;
}

.btn-primary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 18px rgba(0, 255, 136, 0.18);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(201, 209, 217, 0.18);
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: rgba(0, 255, 136, 0.5);
}

/* ─── About ─────────────────────────────────────────────── */
.about-content {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 3.5rem;
  align-items: start;
}

.about-text p {
  color: var(--text);
  margin-bottom: 1.1rem;
  line-height: 1.9;
  font-size: 0.93rem;
}

.about-text p:last-child { margin-bottom: 0; }

.about-text strong { color: #e6edf3; font-weight: 500; }

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stat {
  display: flex;
  flex-direction: column;
  text-align: right;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  letter-spacing: 0.03em;
}

/* ─── Projects ──────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 255, 136, 0.35);
  box-shadow: 0 10px 40px rgba(0, 255, 136, 0.07);
}

.card-arrow {
  color: var(--text-muted);
  transition: color 0.2s, transform 0.2s;
}

.website-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 4px;
  padding: 0.28rem 0.65rem;
  font-size: 0.7rem;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: background 0.2s, box-shadow 0.2s;
}

.website-btn:hover {
  background: rgba(0, 255, 136, 0.18);
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.15);
}

.project-card:hover .card-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.1rem;
}

.project-icon { font-size: 1.4rem; }

.project-badge {
  font-size: 0.65rem;
  color: var(--accent);
  border: 1px solid rgba(0, 255, 136, 0.35);
  background: var(--accent-dim);
  padding: 0.18rem 0.55rem;
  border-radius: 3px;
  letter-spacing: 0.05em;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.icon-link {
  color: var(--text-muted);
  transition: color 0.2s;
  display: flex;
  align-items: center;
}

.icon-link:hover { color: var(--accent); }

.project-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: #e6edf3;
  margin-bottom: 0.65rem;
}

.project-description {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 1.25rem;
}

.project-description em {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

.project-tech {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.project-tech li {
  font-size: 0.68rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 136, 0.18);
  padding: 0.18rem 0.55rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* ─── Contact ───────────────────────────────────────────── */
.contact-content {
  max-width: 620px;
  margin: 0 auto;
}

.contact-text {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.85;
}

/* ─── Contact form ──────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-bottom: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  font-family: var(--font);
  font-size: 0.88rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}

.form-group input:-webkit-autofill,
.form-group input:-webkit-autofill:hover,
.form-group input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0px 1000px var(--surface) inset;
  -webkit-text-fill-color: var(--text);
  transition: background-color 5000s ease-in-out 0s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.form-group input:hover,
.form-group textarea:hover {
  border-color: rgba(0, 255, 136, 0.3);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.08);
}

.form-group textarea {
  min-height: 130px;
}

.contact-form button[type="submit"] {
  align-self: center;
}

.form-success {
  font-size: 0.85rem;
  color: var(--accent);
  margin-top: 0.25rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.83rem;
  transition: color 0.2s;
}

.social-link:hover { color: var(--accent); }

/* ─── Footer ────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
}

.footer p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ─── Scroll fade-in ────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1.5rem;
  }

  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-stats {
    flex-direction: row;
    gap: 1rem;
  }

  .stat { text-align: left; flex: 1; }

  .hero { text-align: center; }
  .hero-cta { justify-content: center; }
}

@media (max-width: 480px) {
  .about-stats { flex-wrap: wrap; }
  .stat { min-width: calc(50% - 0.5rem); }
  .social-links { gap: 1rem; }
  .form-row { grid-template-columns: 1fr; }
}