/* ============================================================
   A Todo Papel — Landing styles
   Minimalista con identidad de imprenta.
   Tipografía: Fraunces (display) + Inter (body) + JetBrains Mono (datos)
   Paleta: tinta negra, papel blanco, rojo carmín, azul cobalto
   ============================================================ */

:root {
  --tinta: #0E0E0C;
  --papel: #FAFAF7;
  --papel-2: #F1EFE9;
  --azul: #1B3A5C;        /* azul del logo real */
  --azul-claro: #2A5A8C;
  --cobalto: #1D4E89;
  --gris: #A8A29E;
  --gris-2: #6B6660;
  --line: #E5E1D8;

  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --radius: 0px;            /* imprenta: esquinas rectas */
  --radius-sm: 2px;

  --shadow-1: 0 1px 0 var(--line);
  --shadow-2: 0 12px 24px -16px rgba(14, 14, 12, 0.18);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--tinta);
  background: var(--papel);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* ============================================================
   Tipografía
   ============================================================ */
.display, .display-sm, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 0.95;
  color: var(--tinta);
}
.display {
  font-size: clamp(48px, 8vw, 112px);
  font-variation-settings: "opsz" 144, "SOFT" 30, "WONK" 1;
}
.display em {
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 100, "WONK" 1;
  color: var(--azul);
  font-weight: 500;
}
.display-sm {
  font-size: clamp(36px, 5vw, 64px);
  font-variation-settings: "opsz" 100, "SOFT" 40;
}

.lede {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.5;
  color: var(--gris-2);
  max-width: 48ch;
  margin-top: var(--space-6);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--gris-2);
  margin-bottom: var(--space-4);
}

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--tinta);
}
.brand-logo {
  display: block;
  width: 44px;
  height: auto;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 30, "SOFT" 30;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--gris-2);
  text-transform: lowercase;
  margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--tinta);
  position: relative;
}
.nav a:hover { color: var(--azul); }
.nav-cta {
  font-family: var(--font-mono);
  font-size: 11px !important;
  letter-spacing: 0.06em;
  padding: 8px 14px;
  border: 1px solid var(--tinta);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}
.nav-cta:hover {
  background: var(--tinta);
  color: var(--papel) !important;
}

@media (max-width: 720px) {
  .nav { gap: var(--space-4); }
  .nav a:not(.nav-cta) { display: none; }
  .brand-sub { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: var(--space-16) var(--space-6) var(--space-24);
  max-width: 1280px;
  margin: 0 auto;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-12); }
  .hero { padding: var(--space-12) var(--space-4) var(--space-16); }
}

.hero-cta {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--tinta);
  cursor: pointer;
  transition: transform 80ms ease, background 120ms ease, color 120ms ease;
}
.btn-primary {
  background: var(--tinta);
  color: var(--papel);
}
.btn-primary:hover { background: var(--azul); border-color: var(--azul); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--tinta);
}
.btn-ghost:hover { background: var(--tinta); color: var(--papel); }
.btn-lg { font-size: 18px; padding: 18px 32px; }
.btn span[aria-hidden] { transition: transform 120ms ease; }
.btn:hover span[aria-hidden] { transform: translateX(3px); }

.hero-meta {
  list-style: none;
  margin-top: var(--space-12);
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: var(--space-6);
}
.hero-meta li {
  font-size: 13px;
  color: var(--gris-2);
  line-height: 1.4;
}
.hero-meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--tinta);
  margin-bottom: 2px;
}

/* Hero art: banner real + hoja con ticket superpuesto */
.hero-art {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 480px;
}
.hero-banner {
  width: 100%;
  max-width: 640px;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}
.hero-paper {
  position: absolute;
  bottom: -32px;
  right: -16px;
  z-index: 2;
}
.paper {
  position: relative;
  background: white;
  width: 220px;
  height: 280px;
  box-shadow:
    0 1px 0 var(--line),
    0 20px 40px -24px rgba(14,14,12,0.22),
    0 50px 100px -50px rgba(14,14,12,0.12);
  transform: rotate(4deg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}
.paper-fold {
  position: absolute;
  top: 0; right: 0;
  width: 28px; height: 28px;
  background: linear-gradient(225deg, var(--papel-2) 50%, white 50%);
  box-shadow: -1px 1px 0 var(--line);
}
.paper-fold-2 {
  top: auto; bottom: 0; right: 0;
  background: linear-gradient(45deg, var(--papel-2) 50%, white 50%);
  box-shadow: -1px -1px 0 var(--line);
}
.paper-corner {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--gris);
  width: 12px; height: 12px;
  display: flex; align-items: center; justify-content: center;
}
.paper-corner-tl { top: 4px; left: 4px; }
.paper-corner-tr { top: 4px; right: 4px; }
.paper-corner-bl { bottom: 4px; left: 4px; }
.paper-corner-br { bottom: 4px; right: 4px; }
.paper-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--tinta);
  margin-top: auto;
  padding-top: 30px;
  border-top: 1px dashed var(--line);
}
.paper-line { display: block; }
.paper-line-sm { color: var(--gris-2); font-size: 9px; }
.paper-line-total {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-top: 6px;
  color: var(--azul);
  font-variation-settings: "opsz" 100;
}

@media (max-width: 900px) {
  .hero-art { min-height: 360px; }
  .hero-paper { right: 0; bottom: -24px; }
  .paper { width: 180px; height: 230px; padding: 22px 18px; }
}

/* ============================================================
   Sections
   ============================================================ */
.section-head {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-12);
}
@media (max-width: 720px) {
  .section-head { padding: 0 var(--space-4) var(--space-8); }
}

.services, .how, .contact {
  padding-top: var(--space-16);
  border-top: 1px solid var(--line);
}
@media (max-width: 720px) {
  .services, .how, .contact { padding-top: var(--space-12); }
}

/* Services */
.service-list {
  list-style: none;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.service {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: baseline;
  gap: var(--space-6);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.service.in { opacity: 1; transform: translateY(0); }
.service-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--azul);
  letter-spacing: 0.06em;
}
.service h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.service p {
  grid-column: 2;
  font-size: 15px;
  color: var(--gris-2);
  max-width: 60ch;
  margin-top: 4px;
}
.service-from {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gris-2);
  text-align: right;
  white-space: nowrap;
}
.service-from strong {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--tinta);
  display: block;
  margin-top: 2px;
}

@media (max-width: 720px) {
  .service { grid-template-columns: 40px 1fr; padding: var(--space-6) 0; }
  .service p { grid-column: 1 / -1; }
  .service-from { grid-column: 1 / -1; text-align: left; }
  .service-list { padding: 0 var(--space-4); }
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.step {
  padding: var(--space-12) var(--space-6);
  border-right: 1px solid var(--line);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.step:last-child { border-right: none; }
.step.in { opacity: 1; transform: translateY(0); }
.step-no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--azul);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: var(--space-4);
}
.step h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.step p {
  font-size: 14px;
  color: var(--gris-2);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; }
  .step { border-right: none; border-bottom: 1px solid var(--line); padding: var(--space-8) var(--space-4); }
  .step:last-child { border-bottom: none; }
  .steps { padding: 0 var(--space-4); }
}

/* Contacto */
.contact {
  background: var(--papel-2);
  padding-bottom: var(--space-16);
}
.contact-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
}
.contact .display { margin: var(--space-4) 0 var(--space-6); }
.contact-lede {
  font-size: 18px;
  color: var(--gris-2);
  max-width: 50ch;
  margin: 0 auto var(--space-8);
}
.contact-small {
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gris-2);
  text-transform: uppercase;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  background: var(--papel);
  padding: var(--space-12) var(--space-6) var(--space-6);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-6);
}
.footer-brand { display: flex; align-items: center; gap: var(--space-3); }
.footer-name { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.footer-sub { font-family: var(--font-mono); font-size: 10px; color: var(--gris-2); letter-spacing: 0.06em; text-transform: lowercase; }
.footer-nav { display: flex; gap: var(--space-6); }
.footer-nav a { font-size: 13px; color: var(--gris-2); }
.footer-nav a:hover { color: var(--azul); }
.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gris);
  text-align: right;
  letter-spacing: 0.06em;
}
@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-brand, .footer-nav, .footer-copy { justify-content: center; justify-items: center; text-align: center; }
  .footer { padding: var(--space-8) var(--space-4) var(--space-4); }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .service, .step { opacity: 1; transform: none; }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--cobalto);
  outline-offset: 3px;
}