@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --navy: #0B2545;
  --navy-soft: #1B3A63;
  --gray: #5C6B7A;
  --gray-light: #DDE2E6;
  --bg: #F5F6F5;
  --gold: #A9812F;
  --gold-bg: #FBF3E1;
  --white: #FFFFFF;
  --radius: 4px;
  --max: 960px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--navy);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

.mono {
  font-family: 'IBM Plex Mono', monospace;
}

a { color: inherit; }

/* Header */
header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-weight: 600;
  font-size: 18px;
  text-decoration: none;
  letter-spacing: 0.02em;
}
nav a {
  text-decoration: none;
  color: var(--navy-soft);
  margin-left: 32px;
  font-size: 15px;
  font-weight: 500;
}
nav a:hover { color: var(--gold); }

/* Sections */
section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 24px;
}
section.tight { padding: 48px 24px; }

.hero {
  padding: 96px 24px 72px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  line-height: 1.15;
  max-width: 720px;
  margin: 0 0 20px;
}
.hero p.lead {
  font-size: 19px;
  color: var(--gray);
  max-width: 620px;
  margin: 0 0 32px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 36px;
}
.chip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  background: var(--gold-bg);
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 6px 12px;
  border-radius: var(--radius);
}

.btn {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  text-decoration: none;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 15px;
}
.btn:hover { background: var(--navy-soft); }

.btn-outline {
  display: inline-block;
  border: 1px solid var(--navy);
  color: var(--navy);
  text-decoration: none;
  padding: 13px 27px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 15px;
}

h2.section-title {
  font-size: 28px;
  font-weight: 600;
  margin: 0 0 8px;
}
p.section-sub {
  color: var(--gray);
  font-size: 17px;
  max-width: 640px;
  margin: 0 0 40px;
}

/* Service cards */
.service {
  border-top: 1px solid var(--gray-light);
  padding: 40px 0;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
}
.service:last-child { border-bottom: 1px solid var(--gray-light); }
.service .num {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--gold);
  font-size: 14px;
}
.service h3 {
  font-size: 21px;
  margin: 8px 0 12px;
}
.service .frameworks {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--gray);
  margin-bottom: 10px;
  display: block;
}
.service .ideal {
  margin-top: 14px;
  font-size: 14px;
  color: var(--gray);
}
.service .ideal strong { color: var(--navy); }

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

/* Certifications */
.certs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.cert-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-left: 3px solid var(--gold);
  padding: 20px 24px;
  border-radius: var(--radius);
}
.cert-card .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--gold);
  display: block;
  margin-bottom: 6px;
}
.cert-card p { margin: 0; font-size: 15px; }

/* Timeline (Sobre mi) */
.timeline-item {
  border-left: 2px solid var(--gray-light);
  padding: 4px 0 32px 28px;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
}
.timeline-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.timeline-item p {
  margin: 0;
  color: var(--gray);
  font-size: 15px;
}

/* Contact form */
form {
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
label {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  display: block;
}
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  background: var(--white);
}
input:focus, textarea:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
}

.contact-info {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.contact-info div .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--gold);
  display: block;
  margin-bottom: 4px;
}

footer {
  border-top: 1px solid var(--gray-light);
  padding: 32px 24px;
  text-align: center;
  color: var(--gray);
  font-size: 14px;
}

@media (max-width: 640px) {
  nav a { margin-left: 18px; font-size: 14px; }
  .certs { grid-template-columns: 1fr; }
}