/* ===== Tokens ===== */
:root {
  --bg: #0B0F17;
  --surface: #10151F;
  --surface-hover: #161C29;
  --border: #232A38;
  --text-primary: #E8EAED;
  --text-secondary: #8B92A8;
  --green: #3ECF8E;
  --blue: #5B8DEF;
  --purple: #B57BEE;
  --amber: #F2A93B;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', sans-serif;
  --radius: 12px;
  --container-width: 1040px;
}

/* ===== Reset ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

img { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 23, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.5px;
}
.logo-dot { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
}

.nav-links a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.btn-cv {
  border: 1px solid var(--green);
  color: var(--green) !important;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
}
.btn-cv:hover { background: var(--green); color: var(--bg) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  display: block;
}

/* ===== Hero ===== */
.hero {
  padding: 96px 24px 64px;
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--green);
  font-size: 14px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.hero-location {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 14px;
}

.btn-primary {
  background: var(--green);
  color: var(--bg);
}
.btn-primary:hover { opacity: 0.9; }

.hero-actions a:not(.btn) {
  color: var(--text-secondary);
  font-size: 14px;
  border-bottom: 1px solid transparent;
}
.hero-actions a:not(.btn):hover {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

/* ===== Sections ===== */
.section {
  padding: 56px 24px;
  border-top: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 28px;
}

.lede {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
}

/* ===== Stack grid ===== */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.stack-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  border-left: 3px solid var(--accent, var(--green));
}
.stack-card.c-green { --accent: var(--green); }
.stack-card.c-blue { --accent: var(--blue); }
.stack-card.c-purple { --accent: var(--purple); }

.stack-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 14px;
}

.stack-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stack-card li {
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 20px;
}

/* ===== Timeline ===== */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.timeline-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent, var(--text-secondary));
  border-radius: var(--radius);
  padding: 24px 28px;
}
.timeline-item.c-blue { --accent: var(--blue); }
.timeline-item.c-gray { --accent: var(--text-secondary); }

.timeline-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.timeline-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-meta {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.timeline-item p:not(.timeline-meta) {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 640px;
}

/* ===== Education ===== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.edu-period {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  margin-bottom: 8px;
}

.edu-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

/* ===== Contact ===== */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 15px;
}
.contact-links a { color: var(--text-secondary); }
.contact-links a:hover { color: var(--green); }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a:hover { color: var(--text-primary); }

/* ===== Shared: project cards (used in proyectos.html) ===== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--accent, var(--border));
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.project-card.c-green { --accent: var(--green); }
.project-card.c-blue { --accent: var(--blue); }

.project-badge {
  display: inline-block;
  align-self: flex-start;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 6px;
}

.project-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
}

.project-card p.project-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.project-tech span {
  font-size: 12px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
}

.project-role {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.project-cmd {
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
}
.project-cmd:hover { text-decoration: underline; }

/* ===== Shared: interest chips (used in sobre-mi.html) ===== */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip-list span {
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
}

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    display: none;
  }
  .nav-links.open { display: flex; }

  .hero { padding: 64px 20px 48px; }
  .section { padding: 40px 20px; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}