/* ============================
   CSS Variables & Reset
   ============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-base:         #0b0e14;
  --bg-card:         #111827;
  --bg-card-hover:   #131e2e;
  --border:          #1e3a5f;
  --border-hover:    #00ff88;
  --green:           #00ff88;
  --blue:            #60a5fa;
  --purple:          #a78bfa;
  --amber:           #f59e0b;
  --text-primary:    #e2e8f0;
  --text-secondary:  #94a3b8;
  --text-muted:      #64748b;
  --font:            'Inter', system-ui, sans-serif;
  --radius:          8px;
  --transition:      0.2s ease;
  --max-width:       1100px;
}

html { scroll-behavior: smooth; }

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

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

/* ============================
   Layout utilities
   ============================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 80px 0; }

.section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

.section-title span { color: var(--green); }

/* ============================
   Navbar
   ============================ */
#navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--green); }

.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-family: var(--font);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

.lang-toggle:hover {
  border-color: var(--green);
  color: var(--green);
}

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

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-base);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 16px;
  }

  .nav-links.open { display: flex; }
}

/* ============================
   Hero
   ============================ */
#hero {
  padding: 100px 0 80px;
}

.hero-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 56px;
  align-items: center;
}

.hero-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  flex-shrink: 0;
}

.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.hero-tagline {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.hero-tagline-accent { color: var(--green); }

.hero-sub {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  text-align: center;
  min-width: 90px;
}

.hero-stat-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.btn-primary {
  display: inline-block;
  background: var(--green);
  color: #0b0e14;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: var(--radius);
  transition: opacity var(--transition), transform var(--transition);
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

@media (max-width: 640px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-photo { margin: 0 auto; }
  .hero-stats { justify-content: center; }
}

/* ============================
   Services (Qué hago)
   ============================ */
#services { border-top: 1px solid var(--border); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition);
}

.service-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.service-icon {
  color: var(--green);
  margin-bottom: 16px;
}

.service-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* ============================
   Projects
   ============================ */
#projects { border-top: 1px solid var(--border); }

.project-featured {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 20px;
  transition: border-color var(--transition);
}

.project-featured:hover { border-color: var(--green); }

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.project-extra {
  display: none;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.project-extra.open { display: grid; }

.project-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.badge-green {
  background: rgba(0, 255, 136, 0.15);
  color: var(--green);
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.project-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.project-featured .project-name { font-size: 1.3rem; }

.project-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tag {
  background: rgba(96, 165, 250, 0.1);
  color: var(--blue);
  border: 1px solid rgba(96, 165, 250, 0.2);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
}

.btn-expand {
  background: none;
  border: 1px solid var(--border);
  color: var(--green);
  font-family: var(--font);
  font-size: 0.875rem;
  padding: 10px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  width: 100%;
}

.btn-expand:hover {
  background: rgba(0, 255, 136, 0.05);
  border-color: var(--green);
}

@media (max-width: 640px) {
  .project-grid, .project-extra { grid-template-columns: 1fr; }
}

/* ============================
   About
   ============================ */
#about { border-top: 1px solid var(--border); }

.about-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 680px;
  margin-bottom: 32px;
}

.about-facts {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.about-fact {
  display: flex;
  gap: 16px;
  align-items: baseline;
}

.about-fact-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  min-width: 90px;
}

.about-fact-value {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ============================
   Contact
   ============================ */
#contact {
  border-top: 1px solid var(--border);
  text-align: center;
}

.contact-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.contact-subtitle {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--green);
  letter-spacing: -0.5px;
  margin-bottom: 40px;
}

.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-block;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ============================
   Footer
   ============================ */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}