/* ============================================================
   César Villegas — Desarrollador Backend
   Motivo visual: plano de arquitectura (retícula técnica,
   nodos conectados, anotaciones al margen)
   ============================================================ */

:root {
  /* Paleta — papel técnico + tinta navy + acento ámbar */
  --color-primary: #14263B;      /* tinta navy */
  --color-secondary: #24405F;    /* navy claro */
  --color-accent: #C9611F;       /* ámbar de anotación */
  --color-accent-soft: #E8A56B;
  --color-bg: #F7F6F3;           /* papel técnico */
  --color-bg-alt: #EFEDE7;
  --color-bg-dark: #14263B;
  --color-text: #14263B;
  --color-text-light: #5A6B7F;
  --color-white: #FFFFFF;
  --color-border: #D8D5CD;
  --color-line: #9AA7B4;
  --mask-opaque: #000000;        /* solo para mask-image, no es color de marca */

  /* Tipografía */
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-main: 'Inter', 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;

  /* Espaciado */
  --section-padding: 96px 0;
  --container-max: 1120px;

  /* Acabado — subtle (técnico, sobrio) */
  --border-radius: 4px;
  --border-radius-sm: 3px;
  --border-radius-lg: 6px;

  --shadow: 0 2px 14px rgba(20, 38, 59, 0.07);
  --shadow-hover: 0 10px 32px rgba(20, 38, 59, 0.13);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-pad { padding: var(--section-padding); }

/* ---------- Tipografía de sección ---------- */
.section-eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}
.section-eyebrow--light { color: var(--color-accent-soft); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-title--light { color: var(--color-white); }

.section-subtitle {
  color: var(--color-text-light);
  max-width: 56ch;
}

.section-head { margin-bottom: 3.5rem; }

/* ---------- Botones — efecto inset-fill ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.9rem 1.9rem;
  border-radius: var(--border-radius);
  border: 1.5px solid var(--color-primary);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  z-index: 0;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  transform: scaleY(1);
  transform-origin: bottom;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: -1;
}

.btn-solid { color: var(--color-bg); }
.btn-solid:hover { color: var(--color-primary); }
.btn-solid:hover::before { transform: scaleY(0); }

.btn-outline { color: var(--color-primary); }
.btn-outline::before { transform: scaleY(0); }
.btn-outline:hover { color: var(--color-bg); }
.btn-outline:hover::before { transform: scaleY(1); }

.btn-accent {
  border-color: var(--color-accent);
  color: var(--color-bg-dark);
}
.btn-accent::before { background: var(--color-accent); }
.btn-accent:hover { color: var(--color-accent-soft); }

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(247, 246, 243, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 20px rgba(20, 38, 59, 0.06);
}

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

.nav-brand { display: flex; align-items: center; gap: 0.7rem; }

.nav-brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: var(--color-bg);
  background: var(--color-primary);
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--border-radius-sm);
  flex-shrink: 0;
}

.nav-brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}

.nav-menu { display: flex; align-items: center; gap: 2rem; }

.nav-link {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--color-text-light);
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -5px;
  width: 0; height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav-link:hover { color: var(--color-primary); }
.nav-link:hover::after { width: 100%; }

.nav-link-cta {
  color: var(--color-primary);
  font-weight: 600;
  border: 1.5px solid var(--color-primary);
  padding: 0.45rem 1.1rem;
  border-radius: var(--border-radius);
  transition: background var(--transition), color var(--transition);
}
.nav-link-cta::after { display: none; }
.nav-link-cta:hover { background: var(--color-primary); color: var(--color-bg); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--color-primary);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO — plano técnico
   ============================================================ */
.hero {
  position: relative;
  padding: 150px 0 90px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

/* Retícula del plano */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.13;
  mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, var(--mask-opaque) 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, var(--mask-opaque) 40%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 4rem;
  align-items: center;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 1.4rem;
}
.tick {
  width: 26px;
  height: 2px;
  background: var(--color-accent);
  display: inline-block;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.2rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-bottom: 1.1rem;
}

.hero-role {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.6rem;
  padding-left: 1rem;
  border-left: 2px solid var(--color-accent);
}

.hero-lead {
  color: var(--color-text-light);
  max-width: 54ch;
  margin-bottom: 2.4rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Esquema SVG */
.hero-schema { text-align: center; }
.schema-svg { width: 100%; max-width: 300px; height: auto; margin: 0 auto; }

.schema-node rect {
  fill: var(--color-white);
  stroke: var(--color-line);
  stroke-width: 1.5;
}
.schema-node text {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  fill: var(--color-primary);
  text-anchor: middle;
}
.schema-node .schema-sub {
  font-family: var(--font-main);
  font-size: 10px;
  font-weight: 400;
  fill: var(--color-text-light);
}
.schema-node--accent rect {
  stroke: var(--color-accent);
  stroke-width: 2;
}
.schema-node--accent text { fill: var(--color-accent); }

.schema-line {
  stroke: var(--color-line);
  stroke-width: 1.5;
}
.schema-arrow-head { fill: var(--color-line); }

.schema-bracket { stroke: var(--color-line); stroke-width: 1.5; }
.schema-note {
  font-family: var(--font-main);
  font-size: 10px;
  fill: var(--color-text-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transform-box: fill-box;
}

.schema-caption {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 0.9rem;
  font-style: italic;
}

/* ============================================================
   PERFIL
   ============================================================ */
.perfil { background: var(--color-bg); }

.perfil-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 4rem;
  align-items: start;
}

/* Marco técnico de la foto — recuadro desplazado en ámbar */
.foto-frame {
  position: relative;
  max-width: 260px;
}
.foto-frame::before {
  content: '';
  position: absolute;
  inset: -14px -14px 14px 14px;
  border: 1.5px solid var(--color-accent);
  border-radius: var(--border-radius);
  pointer-events: none;
}
.foto-img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  position: relative;
  filter: saturate(0.92) contrast(1.04);
}

.perfil-texto p { margin-bottom: 1.1rem; color: var(--color-text-light); }
.perfil-texto p:first-of-type {
  color: var(--color-text);
  font-size: 1.08rem;
}

.perfil-datos {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem 1.5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.6rem;
}
.perfil-datos li {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.92rem;
  color: var(--color-text-light);
}
.perfil-datos i {
  color: var(--color-accent);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

/* ============================================================
   STACK
   ============================================================ */
.stack { background: var(--color-bg-alt); }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
}

.stack-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.8rem 1.6rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.stack-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stack-card-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-bottom: 1rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px dashed var(--color-border);
}
.stack-card-head i {
  font-size: 1.15rem;
  color: var(--color-accent);
  width: 24px;
  text-align: center;
}
.stack-card-head h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.stack-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}
.stack-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.66em;
  width: 5px; height: 5px;
  background: var(--color-line);
  border-radius: 50%;
}

/* ============================================================
   EXPERIENCIA — timeline
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 2.2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 1.5px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-border));
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -2.2rem;
  top: 6px;
  width: 12px; height: 12px;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
}

.timeline-fecha {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}
.timeline-rol {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.timeline-org {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}
.timeline-proyecto {
  font-size: 0.93rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 0.9rem;
}

.timeline-tareas li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.94rem;
  color: var(--color-text-light);
  margin-bottom: 0.55rem;
}
.timeline-tareas li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.62em;
  width: 7px; height: 1.5px;
  background: var(--color-line);
}

/* ============================================================
   FORMACIÓN
   ============================================================ */
.formacion { background: var(--color-bg-alt); }

.formacion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.4rem;
}

.formacion-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-line);
  border-radius: var(--border-radius);
  padding: 1.8rem 1.6rem;
  transition: border-left-color var(--transition), transform var(--transition);
}
.formacion-card:hover { transform: translateY(-4px); }
.formacion-card--main { border-left-color: var(--color-accent); }

.formacion-estado {
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 0.8rem;
}
.formacion-card--main .formacion-estado { color: var(--color-accent); }

.formacion-card h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}
.formacion-org {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ============================================================
   APTITUDES
   ============================================================ */
.aptitudes-lista {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 0;
  border-top: 1px solid var(--color-border);
}
.aptitudes-lista li {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.35rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 1.02rem;
  font-weight: 500;
}
.apt-num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

/* ============================================================
   CONTACTO
   ============================================================ */
.contacto {
  background: var(--color-bg-dark);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.contacto::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.06;
  pointer-events: none;
}

.contacto-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
}

.contacto-lead {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 2.4rem;
}

.contacto-acciones {
  display: flex;
  justify-content: center;
  margin-bottom: 2.4rem;
}

.contacto-redes {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.contacto-redes a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--border-radius);
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.contacto-redes a:hover {
  border-color: var(--color-accent);
  color: var(--color-white);
  background: rgba(201, 97, 31, 0.14);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 2.6rem;
  padding-bottom: 2.6rem;
}

.footer-brand { display: flex; align-items: center; gap: 0.9rem; }
.footer-nombre {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}
.footer-rol {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.footer-links { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-light);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); }

.footer-bottom { border-top: 1px solid var(--color-border); }
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1.3rem;
  padding-bottom: 1.3rem;
  font-size: 0.83rem;
  color: var(--color-text-light);
}
.footer-bottom a {
  color: var(--color-accent);
  transition: opacity var(--transition);
}
.footer-bottom a:hover { opacity: 0.75; }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 1.8rem;
  right: 1.8rem;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
  z-index: 900;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover { background: var(--color-accent); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-schema { order: -1; }
  .schema-svg { max-width: 250px; }
  .perfil-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .foto-frame { max-width: 220px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }
  .nav-menu.open {
    max-height: 400px;
    padding: 0.5rem 1.5rem 1.5rem;
  }
  .nav-menu li { border-bottom: 1px solid var(--color-border); }
  .nav-menu li:last-child { border-bottom: none; padding-top: 1rem; }
  .nav-link { display: block; padding: 0.95rem 0; }
  .nav-link::after { display: none; }
  .nav-link-cta { text-align: center; }
}

@media (max-width: 600px) {
  :root { --section-padding: 64px 0; }

  .hero { padding: 120px 0 70px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }

  .perfil-datos { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-bottom-inner { flex-direction: column; gap: 0.4rem; }

  .back-to-top { bottom: 1.2rem; right: 1.2rem; }
}

/* ---------- Accesibilidad: respetar preferencia de movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}