:root {
  --bg: #080b0f;
  --surface: #0f1419;
  --card: #141b24;
  --border: #1e2d3d;
  --accent: #00d4ff;
  --accent2: #ff6b35;
  --accent3: #7c3aed;
  --text: #e2e8f0;
  --muted: #64748b;
  --mono: 'Space Mono', monospace;
  --sans: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
  cursor: none;
}

/* Custom Cursor */
.cursor {
  width: 12px; height: 12px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9999;
  transform: translate(-50%,-50%);
  transition: transform 0.1s, width 0.3s, height 0.3s, background 0.3s;
  mix-blend-mode: screen;
}
.cursor-ring {
  width: 40px; height: 40px;
  border: 1px solid rgba(0,212,255,0.4);
  border-radius: 50%;
  position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9998;
  transform: translate(-50%,-50%);
  transition: transform 0.15s ease, width 0.3s, height 0.3s;
}

/* Grid background */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none; z-index: 0;
}

/* Noise overlay */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9000;
  opacity: 0.4;
}

/* Glow orbs */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
}
.orb-1 { width: 600px; height: 600px; background: var(--accent3); top: -200px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: var(--accent); bottom: 10%; left: -150px; }

/* NAV*/
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.5rem 3rem;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
nav.scrolled {
  background: rgba(8,11,15,0.9);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.nav-logo {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 2px;
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 1px;
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.3s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

/*  HERO  */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 0 3rem;
  position: relative; z-index: 1;
}
.hero-content { max-width: 800px; }

.hero-tag {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 4px;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}
.hero-tag::before { content: '// '; }

.hero h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}
.hero h1 span {
  display: block;
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 500px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero-actions {
  display: flex; gap: 1rem; align-items: center;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

.btn-primary {
  padding: 0.9rem 2rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 2px;
  border: none; border-radius: 2px;
  cursor: none; text-decoration: none;
  font-weight: 700;
  transition: all 0.3s;
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--accent3);
  transform: translateX(-100%);
  transition: transform 0.3s;
}
.btn-primary:hover::before { transform: translateX(0); }
.btn-primary span { position: relative; z-index: 1; }

.btn-ghost {
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 2px;
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: none; text-decoration: none;
  transition: all 0.3s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Hero Photo Frame */
.hero-photo-wrap {
  position: absolute;
  right: 6%;
  top: 50%;
  transform: translateY(-50%);
  width: 340px;
  height: auto;
  opacity: 0;
  animation: fadeIn 1s 0.8s forwards;
}
.hero-photo {
  width: 100%;
  height: 380px;
  object-fit: cover;
  object-position: top;
  display: block;
  filter: grayscale(20%) contrast(1.05);
  transition: filter 0.4s;
}
.hero-photo-wrap:hover .hero-photo { filter: grayscale(0%) contrast(1); }

.hero-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -10px;
  border: 1px solid rgba(0,212,255,0.25);
  z-index: -1;
  transition: border-color 0.4s;
}
.hero-photo-wrap::after {
  content: '';
  position: absolute;
  inset: -20px;
  border: 1px solid rgba(0,212,255,0.08);
  z-index: -1;
}
.hero-photo-wrap:hover::before { border-color: rgba(0,212,255,0.6); }

.hero-photo-corner {
  position: absolute;
  width: 20px; height: 20px;
  z-index: 2;
}
.hero-photo-corner.tl { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.hero-photo-corner.tr { top: -1px; right: -1px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.hero-photo-corner.bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.hero-photo-corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }

.hero-photo-badge {
  position: absolute;
  bottom: 1.25rem; left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 3px;
  color: var(--accent);
  background: rgba(8,11,15,0.85);
  border: 1px solid rgba(0,212,255,0.3);
  padding: 0.4rem 1rem;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.hero-photo-badge::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  background: #00ff88;
  border-radius: 50%;
  margin-left: 0.5rem;
  animation: pulse 2s infinite;
}

/* Social buttons under photo */
.photo-socials {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1rem;
}
.photo-social-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.9rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 3px;
  text-decoration: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  transition: all 0.3s;
  cursor: none;
}
.photo-social-btn img {
  width: 14px; height: 14px;
  filter: invert(1) opacity(0.5);
  transition: filter 0.3s;
}
.photo-social-btn:hover { transform: translateY(-3px); color: #0077b5; border-color: #0077b5; background: rgba(0,119,181,0.08); }
.photo-social-btn:hover img { filter: invert(0) sepia(1) saturate(5) hue-rotate(180deg) opacity(1); }
.photo-social-btn.whatsapp:hover { color: #25d366; border-color: #25d366; background: rgba(37,211,102,0.08); }
.photo-social-btn.whatsapp:hover img { filter: invert(0) sepia(1) saturate(5) hue-rotate(90deg) opacity(1); }
.photo-social-btn.github:hover { color: var(--text); border-color: var(--text); background: rgba(255,255,255,0.05); }
.photo-social-btn.github:hover img { filter: invert(1) opacity(1); }

/* Hero bottom socials bar */
.hero-socials {
  position: absolute;
  bottom: 3rem; left: 3rem;
  display: flex; align-items: center; gap: 0.75rem;
  opacity: 0;
  animation: fadeIn 1s 1.5s both;
}
.hero-socials::before {
  content: '';
  width: 40px; height: 1px;
  background: var(--border);
  margin-right: 0.25rem;
}
.social-link {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.3s;
  cursor: none;
}
.social-link svg { width: 16px; height: 16px; }
.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,212,255,0.08);
  transform: translateY(-3px);
}

/*  SECTIONS  */
section { padding: 7rem 3rem; position: relative; z-index: 1; }

.section-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 4px;
  margin-bottom: 0.75rem;
}
.section-label::before { content: '01. '; }
.section-label.s2::before { content: '02. '; }
.section-label.s3::before { content: '03. '; }
.section-label.s4::before { content: '04. '; }

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 3rem;
  line-height: 1.1;
}

/*  ABOUT  */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text p { color: var(--muted); line-height: 1.9; margin-bottom: 1.2rem; font-size: 1rem; }
.about-text p strong { color: var(--text); }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
  position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
  background: linear-gradient(var(--accent), var(--accent3));
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.stat-num {
  font-family: var(--mono);
  font-size: 2.5rem; font-weight: 700;
  color: var(--accent); line-height: 1; margin-bottom: 0.5rem;
}
.stat-label { font-size: 0.85rem; color: var(--muted); }

/*  SKILLS  */
#skills { background: var(--surface); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.skill-group {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 1.75rem;
  transition: border-color 0.3s, transform 0.3s;
}
.skill-group:hover { border-color: var(--accent); transform: translateY(-4px); }
.skill-group-title {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--accent2); letter-spacing: 3px; margin-bottom: 1.25rem;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tag {
  padding: 0.3rem 0.8rem;
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 2px; font-size: 0.8rem;
  color: var(--text); font-family: var(--mono);
  transition: all 0.2s;
}
.skill-tag:hover { background: rgba(0,212,255,0.15); border-color: var(--accent); color: var(--accent); }

/* PROJECTS  */
.projects-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 2rem;
  position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
  cursor: none;
}
.project-card:first-child {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2rem; align-items: center;
}
.project-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.05), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.project-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.project-card:hover::after { opacity: 1; }

.project-num { font-family: var(--mono); font-size: 0.7rem; color: var(--muted); letter-spacing: 2px; margin-bottom: 1rem; }
.project-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.75rem; }
.project-desc { color: var(--muted); font-size: 0.9rem; line-height: 1.7; margin-bottom: 1.5rem; }
.project-tech { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.5rem; }
.project-tech span {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--accent3);
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.2);
  padding: 0.2rem 0.6rem; border-radius: 2px;
}
.project-links { display: flex; gap: 1rem; }
.project-link {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--muted); text-decoration: none;
  letter-spacing: 1px; transition: color 0.2s;
  display: flex; align-items: center; gap: 0.4rem;
}
.project-link:hover { color: var(--accent); }

/*  CONTACT  */
#contact { background: var(--surface); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact-info p { color: var(--muted); line-height: 1.9; margin-bottom: 2rem; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link {
  display: flex; align-items: center; gap: 1rem;
  color: var(--text); text-decoration: none;
  font-family: var(--mono); font-size: 0.8rem;
  letter-spacing: 1px; padding: 1rem 1.25rem;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 3px; transition: all 0.3s;
}
.contact-link:hover { border-color: var(--accent); color: var(--accent); transform: translateX(-4px); }
.contact-link .icon { font-size: 1.2rem; }

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label { font-family: var(--mono); font-size: 0.7rem; color: var(--muted); letter-spacing: 2px; }
.form-group input,
.form-group textarea {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 3px; padding: 0.85rem 1rem;
  color: var(--text); font-family: var(--sans);
  font-size: 0.9rem; transition: border-color 0.3s;
  outline: none; resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { min-height: 130px; }
.btn-send {
  padding: 0.9rem 2rem; background: transparent;
  color: var(--accent); font-family: var(--mono);
  font-size: 0.8rem; letter-spacing: 2px;
  border: 1px solid var(--accent); border-radius: 2px;
  cursor: none; transition: all 0.3s; align-self: flex-start;
}
.btn-send:hover { background: var(--accent); color: var(--bg); }

/*  FOOTER  */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 3rem;
  display: flex; justify-content: space-between; align-items: center;
  position: relative; z-index: 1;
  flex-wrap: wrap; gap: 1rem;
}
.footer-text { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.footer-copy { font-family: var(--mono); font-size: 0.7rem; color: var(--border); }

.footer-socials {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.footer-social-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.9rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 3px;
  text-decoration: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  transition: all 0.3s;
  cursor: none;
}
.footer-social-btn img {
  width: 14px; height: 14px;
  filter: invert(1) opacity(0.5);
  transition: filter 0.3s;
}
.footer-social-btn:hover { transform: translateY(-3px); color: #0077b5; border-color: #0077b5; background: rgba(0,119,181,0.08); }
.footer-social-btn:hover img { filter: invert(0) sepia(1) saturate(5) hue-rotate(180deg) opacity(1); }
.footer-social-btn.whatsapp:hover { color: #25d366; border-color: #25d366; background: rgba(37,211,102,0.08); }
.footer-social-btn.whatsapp:hover img { filter: invert(0) sepia(1) saturate(5) hue-rotate(90deg) opacity(1); }
.footer-social-btn.github:hover { color: var(--text); border-color: var(--text); background: rgba(255,255,255,0.05); }
.footer-social-btn.github:hover img { filter: invert(1) opacity(1); }

/*  ANIMATIONS  */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/*  RESPONSIVE  */
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; }
  .nav-links { gap: 1.5rem; }
  section { padding: 5rem 1.5rem; }
  .hero { padding: 0 1.5rem; padding-top: 80px; flex-direction: column; justify-content: center; gap: 3rem; min-height: 100vh; }
  .hero-content { max-width: 100%; }
  .hero h1 { font-size: clamp(2.8rem, 10vw, 5rem); }
  .hero-photo-wrap { position: relative !important; right: auto; top: auto; transform: none !important; width: 260px; margin: 0 auto; padding-bottom: 1rem; }
  .hero-photo { height: 300px; }
  .hero-photo-badge { font-size: 0.55rem; padding: 0.3rem 0.7rem; }
  .photo-socials { gap: 0.4rem; }
  .photo-social-btn { padding: 0.4rem 0.7rem; font-size: 0.65rem; }
  .hero-socials { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card:first-child { grid-column: 1; grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  footer { padding: 1.5rem; flex-direction: column; gap: 0.75rem; text-align: center; }
  .footer-socials { justify-content: center; }
  .nav-links a { font-size: 0.78rem; }
}

@media (max-width: 500px) {
  .hero h1 { font-size: 2.5rem; }
  .hero-desc { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-primary, .btn-ghost { width: 100%; text-align: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: 0.72rem; letter-spacing: 0; }
  .section-title { font-size: 2rem; }
  .photo-socials { flex-wrap: wrap; justify-content: center; }
}