/* ═══════════════════════════════════════════════
   LAYOUT — nav, hero, sections, grids
   ═══════════════════════════════════════════════ */

/* ─── Scroll progress bar ─── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--gradient);
  z-index: 300;
  pointer-events: none;
  transition: width 0.08s linear;
}

/* ─── NAV ─── */
#navbar {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 200;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
}

.nav-logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ─── HERO ─── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 75% 75% at 50% 40%, black 10%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: 5rem 4rem;
  display: flex;
  align-items: center;
  gap: 5rem;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(0.875rem, 2vw, 1.05rem);
  color: var(--muted);
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.hero-sep {
  color: var(--accent);
  opacity: 0.45;
}

.hero-desc {
  max-width: 560px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-bottom: 2rem;
}

.hero-location {
  font-size: 0.82rem;
  opacity: 0.55;
}

/* ─── SECTIONS ─── */
.section {
  padding-block: 6rem;
}

.section-label {
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
  opacity: 0.75;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 3rem;
}

/* ─── ABOUT ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.about-text p:last-child { margin-bottom: 0; }

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ─── SKILLS ─── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

/* ─── PROJECTS ─── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.5rem;
}

/* ─── EXPERIENCE + EDUCATION ─── */
.exp-edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.col-heading {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

/* ─── CONTACT ─── */
.contact-content {
  text-align: center;
}

.contact-content .section-title {
  margin-bottom: 1rem;
}

.contact-desc {
  color: var(--muted);
  max-width: 440px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .skills-grid    { grid-template-columns: repeat(2, 1fr); }
  .about-grid     { grid-template-columns: 1fr; gap: 2.5rem; }
  .exp-edu-grid   { grid-template-columns: 1fr; gap: 3rem; }
  .hero-inner     { flex-direction: column-reverse; gap: 2.5rem; text-align: center; }
  .hero-title     { justify-content: center; }
  .hero-btns      { justify-content: center; }
  .hero-photo-wrap { display: flex; justify-content: center; }
}

/* Nav hamburger: activo en tablets y móviles */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    inset-inline: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
    gap: 1.1rem;
    z-index: 100;
  }
}

@media (min-width: 769px) {
  .hamburger { display: none !important; }
}

/* Layout móvil */
@media (max-width: 640px) {
  .container   { padding-inline: 1.25rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .stats-grid  { grid-template-columns: 1fr 1fr; }
  .hero-name   { font-size: 2.2rem; }
  .contact-links { flex-direction: column; align-items: center; }
  .contact-link  { width: 100%; justify-content: center; }
}