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

:root {
  --navy:   #0a0f1e;
  --card:   #141c2f;
  --border: #1e2d4a;
  --cyan:   #00d4ff;
  --cyan2:  #0099cc;
  --silver: #c8d6e5;
  --white:  #f0f4ff;
  --muted:  #6b7fa3;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
}

/* HEADER */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo-wrap { display: flex; align-items: center; gap: 12px; }
.logo-wrap img { height: 44px; width: auto; }

.logo-text { font-size: 1rem; font-weight: 600; color: var(--white); }
.logo-text span {
  display: block;
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.header-tag {
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
}

/* HERO */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80px 24px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-logo {
  width: 120px;
  margin-bottom: 26px;
  filter: drop-shadow(0 0 18px rgba(0,212,255,0.35));
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--white) 40%, var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
}

.hero p {
  font-size: 1rem;
  color: var(--silver);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* HERO BADGES — reemplaza el bloque .hero-badge antiguo */
.hero-badge {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  background: none;
  border: none;
  padding: 0;
}
.badge {
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.22);
  color: var(--cyan);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: background 0.2s, border-color 0.2s;
}
.badge:hover {
  background: rgba(0,212,255,0.14);
  border-color: rgba(0,212,255,0.4);
}

.dot {
  width: 7px; height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(1.4); }
}

/* SECTION TITLE */
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; }
.section-title p { color: var(--muted); font-size: 0.9rem; }

.divider {
  width: 50px; height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  margin: 14px auto 0;
  border-radius: 2px;
}

/* PROJECTS */
#projects {
  padding: 30px 48px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}

/* CARD BASE */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover { transform: translateY(-5px); }
.card:hover::before { opacity: 1; }

.card-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.05);
}

.card-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 20px;
  padding: 2px 10px;
  margin-bottom: 10px;
  color: var(--cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
}

.card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 9px; }
.card p  { font-size: 0.86rem; color: var(--silver); line-height: 1.65; margin-bottom: 18px; flex-grow: 1; }

/* TAGS */
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.tag {
  font-size: 0.7rem;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 9px;
}

/* FILES */
.files-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.files-list { display: flex; flex-direction: column; gap: 6px; }

.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--silver);
  font-size: 0.82rem;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer p { font-size: 0.82rem; color: var(--muted); }
footer p span { color: var(--cyan); }

.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.82rem; color: var(--muted); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--cyan); }

/* RESPONSIVE */
@media (max-width: 640px) {
  header    { padding: 14px 20px; }
  #projects { padding: 20px 20px 60px; }
  footer    { padding: 20px; flex-direction: column; align-items: flex-start; }
}

/* ══════════════════════════════════════════
   ACENTOS POR PROYECTO
══════════════════════════════════════════ */

/* 1 — Moto / Carburadores → naranja industrial */
.card-moto::before { background: linear-gradient(90deg, #ff8c00, #cc5500, transparent); }
.card-moto:hover   { box-shadow: 0 16px 40px rgba(255,140,0,0.12); border-color: rgba(255,140,0,0.3); }
.card-moto .card-icon { background: rgba(255,140,0,0.1); border-color: rgba(255,140,0,0.25); }
.card-moto .card-badge { color: #ff8c00; background: rgba(255,140,0,0.08); border-color: rgba(255,140,0,0.2); }
.card-moto .file-item:hover { background: rgba(255,140,0,0.06); border-color: rgba(255,140,0,0.25); color: #ff8c00; }

/* 2 — Académico / Nota Final → azul índigo */
.card-academic::before { background: linear-gradient(90deg, #4a9eff, #1565c0, transparent); }
.card-academic:hover   { box-shadow: 0 16px 40px rgba(74,158,255,0.12); border-color: rgba(74,158,255,0.3); }
.card-academic .card-icon { background: rgba(74,158,255,0.1); border-color: rgba(74,158,255,0.25); }
.card-academic .card-badge { color: #4a9eff; background: rgba(74,158,255,0.08); border-color: rgba(74,158,255,0.2); }
.card-academic .file-item:hover { background: rgba(74,158,255,0.06); border-color: rgba(74,158,255,0.25); color: #4a9eff; }

/* 3 — Nómina → verde tecnológico */
.card-nomina::before { background: linear-gradient(90deg, #3d2b1f, #3d2b1f, transparent); }
.card-nomina:hover   { box-shadow: 0 16px 40px rgba(0,229,160,0.12); border-color: rgb(86, 60, 34); }
.card-nomina .card-icon { background: rgba(0,229,160,0.1); border-color: rgb(86, 60, 34); }
.card-nomina .card-badge { color: #b20909; background: rgba(0,229,160,0.08); border-color: rgb(86, 60, 34); }
.card-nomina .file-item:hover { background: rgba(0,229,160,0.06); border-color: rgb(86, 60, 34); color: #3d2b1f; }

/* 4 — Voluntariado → púrpura social */
.card-voluntariado::before { background: linear-gradient(90deg, #c678ff, #6a0dad, transparent); }
.card-voluntariado:hover   { box-shadow: 0 16px 40px rgba(198,120,255,0.12); border-color: rgba(198,120,255,0.3); }
.card-voluntariado .card-icon { background: rgba(198,120,255,0.1); border-color: rgba(198,120,255,0.25); }
.card-voluntariado .card-badge { color: #c678ff; background: rgba(198,120,255,0.08); border-color: rgba(198,120,255,0.2); }
.card-voluntariado .file-item:hover { background: rgba(198,120,255,0.06); border-color: rgba(198,120,255,0.25); color: #c678ff; }

/* 5 — Robots sin IA → azul robótico */
.card-robot::before { background: linear-gradient(90deg, #00cfff, #006688, transparent); }
.card-robot:hover   { box-shadow: 0 16px 40px rgba(0,207,255,0.12); border-color: rgba(0,207,255,0.3); }
.card-robot .card-icon { background: rgba(0,207,255,0.1); border-color: rgba(0,207,255,0.25); }
.card-robot .card-badge { color: #00cfff; background: rgba(0,207,255,0.08); border-color: rgba(0,207,255,0.2); }
.card-robot .file-item:hover { background: rgba(0,207,255,0.06); border-color: rgba(0,207,255,0.25); color: #00cfff; }

/* 6 — Robots con IA → cyan + purple (igual que su página) */
.card-ia::before { background: linear-gradient(90deg, #00e5ff, #c678ff, transparent); }
.card-ia:hover   { box-shadow: 0 16px 40px rgba(0,229,255,0.12); border-color: rgba(0,229,255,0.3); }
.card-ia .card-icon { background: rgba(0,229,255,0.1); border-color: rgba(0,229,255,0.25); }
.card-ia .card-badge { color: #00e5ff; background: rgba(0,229,255,0.08); border-color: rgba(0,229,255,0.2); }
.card-ia .file-item:hover { background: rgba(0,229,255,0.06); border-color: rgba(0,229,255,0.25); color: #00e5ff; }

/* 7 — PELE → verde matrix/terminal */
.card-pele::before { background: linear-gradient(90deg, #00ff41, #008f11, transparent); }
.card-pele:hover   { box-shadow: 0 16px 40px rgba(0,255,65,0.1); border-color: rgba(0,255,65,0.3); }
.card-pele .card-icon { background: rgba(0,255,65,0.08); border-color: rgba(0,255,65,0.25); }
.card-pele .card-badge { color: #00ff41; background: rgba(0,255,65,0.07); border-color: rgba(0,255,65,0.2); }
.card-pele .file-item:hover { background: rgba(0,255,65,0.05); border-color: rgba(0,255,65,0.25); color: #00ff41; }

/* LANG SWITCH */
.header-right { display: flex; align-items: center; gap: 14px; }

.lang-switch {
  display: flex; gap: 3px;
  background: rgba(0,212,255,0.04);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 6px;
  padding: 3px;
}
.lang-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: all 0.2s;
}
.lang-btn.active { background: var(--cyan); color: #000; }
.lang-btn:hover:not(.active) { color: var(--cyan); }

/* HERO BADGES */
.hero-badge {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.badge {
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.22);
  color: var(--cyan);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: background 0.2s, border-color 0.2s;
}
.badge:hover {
  background: rgba(0,212,255,0.14);
  border-color: rgba(0,212,255,0.4);
}