/* ============================================================
   SISTEMAS CON PROPÓSITO. Sistema de diseño
   Hermano de EscalandoCS. Misma paleta Huascarán/Alpamayo,
   misma tipografía y estructura de componentes.
   ============================================================ */

:root {
  --ink: #2e4a63;
  --ink-soft: #3f6083;
  --ink-mute: #6b7b87;
  --cream: #f7fafc;
  --cream-soft: #e9eef2;
  --paper: #ffffff;
  --accent: #7c5c9c;
  --accent-soft: #6b4f87;
  --line: rgba(107, 123, 135, 0.22);
  --line-on-dark: rgba(247, 250, 252, 0.18);

  --font-display: "Fraunces", "Iowan Old Style", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1180px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 var(--space-sm);
  color: var(--ink);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.4rem); font-weight: 500; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); }

p { margin: 0 0 var(--space-sm); color: var(--ink-mute); }

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--ink-soft);
  max-width: 46ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: var(--space-sm);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { padding: var(--space-xl) 0; }
@media (max-width: 720px) {
  section { padding: var(--space-lg) 0; }
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95em 1.8em;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--ink-mute); }

.btn-gold {
  background: var(--accent);
  color: var(--paper);
}
.btn-gold:hover { background: var(--accent-soft); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

.btn-ghost-light {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-on-dark);
}
.btn-ghost-light:hover { border-color: var(--paper); }

.btn svg { width: 1.1em; height: 1.1em; flex-shrink: 0; }

/* ---------------- Nav ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 250, 252, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 0;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav-logo span,
.footer-logo span {
  background: var(--accent);
  color: var(--paper);
  font-size: 0.8em;
  padding: 0.06em 0.32em;
  border-radius: 0.3em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 0.3em 0;
  transition: color 0.25s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1.5px;
  background: var(--accent);
  transition: right 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { right: 0; }

.nav-cta { display: flex; align-items: center; gap: 1.6rem; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 12px;
}
.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 5.5px; }
.nav-toggle-bars span:nth-child(3) { top: 11px; }

.nav-mobile-panel {
  display: none;
  flex-direction: column;
  gap: 0;
  padding: 0.5rem 0 1.5rem;
  border-top: 1px solid var(--line);
}
.nav-mobile-panel a {
  padding: 0.9rem 0;
  font-size: 1.1rem;
  font-family: var(--font-display);
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}
.nav-mobile-panel a[aria-current="page"] { color: var(--ink); border-color: var(--accent); font-weight: 600; }
.nav-mobile-panel .btn { margin-top: 1.2rem; align-self: flex-start; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta .btn-primary-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
  body.nav-open .nav-mobile-panel { display: flex; }
}

body.nav-open .nav-toggle-bars span:nth-child(1) { top: 5.5px; transform: rotate(45deg); }
body.nav-open .nav-toggle-bars span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle-bars span:nth-child(3) { top: 5.5px; transform: rotate(-45deg); }

/* ---------------- Hero ---------------- */

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 var(--space-xl);
  background: var(--cream);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero-copy .lede { margin-bottom: var(--space-md); }

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 0.9rem;
  color: var(--ink-mute);
}

.hero-photo {
  position: relative;
  border-radius: 1.4rem;
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  background: var(--ink);
  box-shadow: 0 30px 60px -25px rgba(46, 74, 99, 0.35);
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(46,74,99,0) 55%, rgba(46,74,99,0.55) 100%);
}
.hero-photo-caption {
  position: absolute;
  left: 1.4rem;
  bottom: 1.3rem;
  right: 1.4rem;
  z-index: 2;
  color: var(--paper);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}
.hero-photo-caption strong { display: block; font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-photo { order: -1; max-width: 340px; margin: 0 auto; aspect-ratio: 4/4.8; }
}

/* ---------------- Stats ---------------- */

.stats {
  background: var(--ink);
  color: var(--paper);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  color: var(--paper);
  margin-bottom: 0.2em;
}
.stat-label {
  font-size: 0.92rem;
  color: rgba(247, 250, 252, 0.72);
  max-width: 20ch;
}
@media (max-width: 860px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg) var(--space-md); }
}

/* ---------------- Section headers ---------------- */

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

/* Fuerza una sola línea escalando el tamaño según el ancho de pantalla en vez del clamp estándar de h1. */
.h1-oneline {
  white-space: nowrap;
  font-size: clamp(1rem, calc((100vw - 3rem) * 0.064), 4.4rem);
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------------- About block (home) ---------------- */

.about-block {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
@media (max-width: 860px) { .about-block { grid-template-columns: 1fr; } }

/* ---------------- Value / systems block ---------------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}
.value-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 2rem 1.8rem;
}
.value-card .num {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--paper);
  background: var(--accent);
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
}
.value-card h3 { margin-bottom: 0.5rem; }
.value-card p { margin: 0; font-size: 0.96rem; }

@media (max-width: 860px) { .value-grid { grid-template-columns: 1fr; } }

.services-cta {
  margin-top: var(--space-lg);
  background: var(--ink);
  color: var(--paper);
  border-radius: 1.4rem;
  padding: clamp(2.2rem, 5vw, 3.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.services-cta h3 { color: var(--paper); margin-bottom: 0.3rem; max-width: 30ch; }
.services-cta p { color: rgba(247,250,252,0.7); margin: 0; }

/* ---------------- Flow diagram (resumen de fases) ---------------- */

.flow { padding: 0 0 var(--space-lg); }

.flow-diagram {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  flex: 1 1 170px;
  max-width: 220px;
  text-align: center;
  padding: 1.3rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--cream-soft);
}

.flow-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
}

.flow-step-label {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
}

.flow-arrow {
  align-self: center;
  color: var(--ink-mute);
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

@media (max-width: 780px) {
  .flow-diagram { flex-direction: column; }
  .flow-step { max-width: none; }
  .flow-arrow { transform: rotate(90deg); }
}

/* ---------------- Metodologia ---------------- */

.method-list {
  display: flex;
  flex-direction: column;
  max-width: 760px;
}

.method-step {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 1.6rem;
}

.method-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.method-num {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  border-radius: 50%;
  color: var(--paper);
  background: var(--accent);
  font-family: var(--font-display);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.method-line {
  width: 1px;
  flex: 1;
  min-height: 2rem;
  background: var(--line);
  margin: 0.4rem 0;
}

.method-body { padding-bottom: 2.6rem; }
.method-body h3 { margin-bottom: 0.4rem; }
.method-body p { margin: 0; max-width: 52ch; }

@media (max-width: 620px) {
  .method-step { grid-template-columns: 2.8rem 1fr; gap: 1.1rem; }
  .method-num { width: 2.5rem; height: 2.5rem; font-size: 0.92rem; }
}

/* ---------------- Pricing ---------------- */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.price-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: clamp(1.8rem, 3vw, 2.4rem);
  background: var(--paper);
}

.price-tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--paper);
  padding: 0.3em 0.7em;
  border-radius: 0.3em;
  margin-bottom: 0.9rem;
}

.price-card h3 { margin-bottom: 0.6rem; }
.price-card p { flex: 1; font-size: 0.96rem; margin-bottom: 1.4rem; }

@media (max-width: 780px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

/* ---------------- Casos de uso (anidados en Metodología) ---------------- */

.usecase-list { display: flex; flex-direction: column; gap: 1.2rem; }

.usecase-card {
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: clamp(1.6rem, 3.5vw, 2.4rem);
  background: var(--paper);
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: clamp(1rem, 3vw, 2rem);
}

.usecase-card--flat { grid-template-columns: 1fr; }

.usecase-content h4 { font-size: 1.05rem; margin-bottom: 0.6rem; max-width: 42ch; }
.usecase-content p { margin: 0 0 0.8rem; color: var(--ink-mute); font-size: 0.98rem; }
.usecase-content p:last-child { margin-bottom: 0; }

.usecase-content .usecase-outcome {
  padding-top: 0.9rem;
  margin-top: 0.2rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}
.outcome-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--paper);
  padding: 0.15em 0.5em;
  border-radius: 0.3em;
  margin-right: 0.6em;
}

.method-body .usecase-list.nested {
  margin-top: 1.2rem;
  gap: 1rem;
}

@media (max-width: 780px) {
  .usecase-card { grid-template-columns: 1fr; gap: 0.7rem; }
}

/* ---------------- Contact page ---------------- */

.contact-hero {
  text-align: center;
  padding-top: clamp(2rem, 6vw, 3.5rem);
  padding-bottom: var(--space-sm);
}
.contact-hero .section-head { margin: 0 auto var(--space-sm); }
.contact-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
  margin-bottom: 0;
}
.contact-line {
  max-width: 50ch;
  margin: 0 auto;
  color: var(--ink-mute);
}

.contact-details {
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}
.contact-card {
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: 2.2rem;
  background: var(--paper);
}
.contact-card .eyebrow { margin-bottom: 0.8rem; }
.contact-card p { margin-bottom: 1.2rem; }

@media (max-width: 720px) { .contact-cards { grid-template-columns: 1fr; } }

/* ---------------- About me (Contacto) ---------------- */

.contact-about {
  padding-top: var(--space-md);
}

.about-intro {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  max-width: 740px;
  margin: 0 auto var(--space-md);
}
.about-intro .section-head { margin: 0; text-align: left; }

.about-avatar {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--ink);
  box-shadow: 0 12px 24px -14px rgba(46, 74, 99, 0.4);
}
.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 560px) {
  .about-intro { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

.bio-feature {
  max-width: 740px;
  margin: 0 auto var(--space-lg);
}
.bio-feature p {
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: var(--ink-soft);
  line-height: 1.7;
  margin: 0;
}
.bio-feature p::first-letter {
  font-family: var(--font-display);
  font-size: 3.6em;
  font-weight: 600;
  color: var(--accent);
  float: left;
  line-height: 0.8;
  padding-right: 0.1em;
  padding-top: 0.04em;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  max-width: 1000px;
  margin: 0 auto;
  align-items: start;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
}

.about-subhead {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 1.5rem;
}

/* Timeline de formación */

.edu-timeline {
  display: flex;
  flex-direction: column;
}

.edu-item {
  display: grid;
  grid-template-columns: 3.6rem 1.4rem 1fr;
  gap: 0;
}

.edu-year {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
  padding-top: 0.05rem;
  white-space: nowrap;
}

.edu-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.edu-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 0.4rem;
}

.edu-line {
  width: 1px;
  flex: 1;
  min-height: 1.2rem;
  background: var(--line);
  margin: 0.35rem 0;
}

.edu-body { padding-bottom: 1.7rem; }
.edu-body h4 { font-size: 0.98rem; margin-bottom: 0.15rem; }
.edu-body p { margin: 0; font-size: 0.88rem; color: var(--ink-mute); }

@media (max-width: 480px) {
  .edu-item { grid-template-columns: 3.1rem 1.2rem 1fr; }
  .edu-year { font-size: 0.86rem; }
}

/* Stack agrupado por categoría */

.stack-groups {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.stack-group h4 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 0.7rem;
}

.stack-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.42em 0.95em;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  background: var(--paper);
}

/* ---------------- Footer ---------------- */

.site-footer {
  background: var(--ink);
  color: rgba(247, 250, 252, 0.7);
  padding: var(--space-lg) 0 var(--space-md);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--line-on-dark);
  margin-bottom: var(--space-md);
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--paper);
}
.footer-tagline { max-width: 34ch; color: rgba(247,250,252,0.6); font-size: 0.95rem; margin-top: 0.6rem; }
.footer-links { display: flex; gap: 2rem; flex-wrap: wrap; }
.footer-links a { font-size: 0.92rem; color: rgba(247,250,252,0.75); transition: color 0.25s var(--ease); }
.footer-links a:hover { color: var(--paper); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: rgba(247,250,252,0.45);
}

/* ---------------- Reveal animation ---------------- */

.reveal {
  opacity: 1;
  transform: none;
}
.js-ready .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js-ready .reveal.in-view {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js-ready .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}