/* ── Variables y reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 56px;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: #0d1117;
  color: #e6edf3;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; color: inherit; }

/* ── Scrollbar estilo terminal ───────────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: #0d1117; }
::-webkit-scrollbar-thumb { background: #30363d; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #4ade80; }

/* ── Selección de texto ──────────────────────────────────────────────────── */
::selection { background: #4ade8040; color: #4ade80; }

/* ── Header scrolled ─────────────────────────────────────────────────────── */
#header.scrolled { box-shadow: 0 1px 20px rgba(0,0,0,0.5); }

/* ── Cursor parpadeante de terminal ──────────────────────────────────────── */
.terminal-cursor {
  display: inline-block;
  color: #4ade80;
  animation: blink 1s step-end infinite;
}

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

/* ── Secciones ───────────────────────────────────────────────────────────── */
section { padding: 5rem 1rem; }
@media (min-width: 768px) { section { padding: 6rem 1.5rem; } }

.container {
  max-width: 72rem;
  margin-inline: auto;
  width: 100%;
}

/* ── Section header reutilizable ─────────────────────────────────────────── */
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: #4ade80;
  margin-bottom: 0.5rem;
}

.section-label::before { content: '// '; color: #6e7681; }

.section-title {
  font-family: 'Inter', sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #e6edf3;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 0.95rem;
  color: #8b949e;
  line-height: 1.7;
  max-width: 42rem;
}

/* ── Cards reutilizables ─────────────────────────────────────────────────── */
.card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 0.5rem;
  padding: 1.5rem;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(74, 222, 128, 0.1), transparent);
  transition: left 0.5s ease;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  border-color: #4ade80;
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 12px 40px rgba(74, 222, 128, 0.2), 
              0 0 25px rgba(74, 222, 128, 0.1);
}

/* ── Skill badge ─────────────────────────────────────────────────────────── */
.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: #4ade80;
  background: #4ade8015;
  border: 1px solid #4ade8030;
  padding: 0.35rem 0.75rem;
  border-radius: 0.25rem;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
  position: relative;
}

.skill-badge::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 0.25rem;
  padding: 1px;
  background: linear-gradient(45deg, #4ade80, transparent, #4ade80);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.skill-badge:hover {
  background: #4ade8030;
  border-color: #4ade80;
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 5px 20px rgba(74, 222, 128, 0.3);
}

.skill-badge:hover::after {
  opacity: 1;
}

/* ── Reveal animación ────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-left  { opacity: 0; transform: translateX(-30px); transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal-right { opacity: 0; transform: translateX(30px);  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translate(0); }

.reveal-stagger > *:nth-child(1) { transition-delay: 0s;   }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.5s; }

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-left, .reveal-right { opacity: 1; transform: none; }
}