/* ==========================================================================
   Donkey Labs — sistema visual
   Estética: laboratorio / papel técnico / datos. Papel cálido, tinta grafito,
   verde pino como acento estructural y ámbar sólo para señalar prioridad.
   ========================================================================== */

:root {
  --paper: #f4f2ed;
  --paper-deep: #eae6dd;
  --card: #fbfaf7;
  --ink: #141714;
  --ink-soft: #3d443d;
  --ink-mute: #6d746c;
  --line: #d9d3c6;
  --line-strong: #b9b1a1;
  --pine: #1e3b32;
  --pine-soft: #2f5648;
  --signal: #b4622b;
  --signal-soft: #f0e3d6;
  --danger: #8f2f24;

  --font-display: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Archivo', 'Helvetica Neue', Helvetica, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;

  --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.84rem);
  --step-0: clamp(1rem, 0.97rem + 0.15vw, 1.08rem);
  --step-1: clamp(1.18rem, 1.1rem + 0.4vw, 1.4rem);
  --step-2: clamp(1.45rem, 1.3rem + 0.8vw, 1.95rem);
  --step-3: clamp(1.9rem, 1.6rem + 1.5vw, 2.9rem);
  --step-4: clamp(2.4rem, 1.8rem + 3.2vw, 4.6rem);

  --gut: clamp(1.25rem, 4vw, 3rem);
  --radius: 3px;
  --shadow-soft: 0 1px 2px rgba(20, 23, 20, 0.04), 0 12px 32px -18px rgba(20, 23, 20, 0.22);
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  background-image: linear-gradient(to right, rgba(185, 177, 161, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(185, 177, 161, 0.16) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--pine);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 {
  font-size: var(--step-4);
}
h2 {
  font-size: var(--step-3);
}
h3 {
  font-size: var(--step-1);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

p {
  margin: 0 0 1em;
  max-width: 68ch;
}

.lead {
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink-soft);
}

.mute {
  color: var(--ink-mute);
}

.small {
  font-size: var(--step--1);
  line-height: 1.5;
}

/* ---------- layout ---------- */

.wrap {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: var(--gut);
}

.wrap--narrow {
  max-width: 760px;
}

section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
  position: relative;
}

.rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

/* ---------- etiquetas tipo laboratorio ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 1.4rem;
}

.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: var(--line-strong);
  flex: none;
}

.eyebrow--plain::before {
  display: none;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pine);
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  padding: 0.25rem 0.7rem;
  display: inline-block;
  background: rgba(255, 255, 255, 0.5);
}

.tag--signal {
  color: var(--signal);
  border-color: rgba(180, 98, 43, 0.45);
  background: var(--signal-soft);
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(244, 242, 237, 0.86);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.wordmark__mark {
  width: 26px;
  height: 26px;
  flex: none;
}

.wordmark__text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.site-nav a {
  font-size: 0.86rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.site-nav__links {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2rem);
}

/* ---------- botones ---------- */

.btn {
  --btn-bg: var(--pine);
  --btn-fg: #f7f6f2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  padding: 0.85rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 1px 0 rgba(20, 23, 20, 0.12);
}

.btn:hover {
  background: var(--pine-soft);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px -10px rgba(20, 23, 20, 0.5);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--line-strong);
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--ink-soft);
}

.btn--small {
  padding: 0.55rem 0.95rem;
  font-size: 0.85rem;
}

.btn--wide {
  width: 100%;
}

.btn[disabled],
.btn[aria-disabled='true'] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn__arrow {
  transition: transform 0.18s ease;
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(3rem, 7vw, 6rem) clamp(3rem, 7vw, 5.5rem);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 4vw, 5rem);
  }
}

.hero h1 {
  margin-bottom: 1.1rem;
}

.hero__sub {
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 34ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

.hero__note {
  margin-top: 1.4rem;
  padding-left: 1rem;
  border-left: 2px solid var(--line-strong);
  color: var(--ink-soft);
  font-size: 0.95rem;
  max-width: 46ch;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* mapa de nodos */
.nodemap {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
}

.nodemap__caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 0.4rem 0.3rem 0.75rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.75rem;
}

.nodemap svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (prefers-reduced-motion: no-preference) {
  .node-dot {
    animation: node-in 0.7s cubic-bezier(0.2, 0.7, 0.3, 1) both;
  }
  .node-link {
    stroke-dasharray: 220;
    stroke-dashoffset: 220;
    animation: link-draw 1.3s ease-out forwards;
  }
  .node-pulse {
    animation: pulse 3.6s ease-in-out infinite;
    transform-origin: center;
  }
}

@keyframes node-in {
  from {
    opacity: 0;
    transform: scale(0.4);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes link-draw {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.25;
    r: 26;
  }
  50% {
    opacity: 0.08;
    r: 34;
  }
}

/* ---------- bloques de contenido ---------- */

.split {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: 1fr;
}

@media (min-width: 880px) {
  .split {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }
  .split--even {
    grid-template-columns: 1fr 1fr;
  }
}

.stack > * + * {
  margin-top: 1rem;
}

.statements {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.statements li {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.statements li span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-mute);
  letter-spacing: 0.1em;
}

.statements li p {
  margin: 0;
  font-size: 1.02rem;
  color: var(--ink-soft);
}

.pullquote {
  border-left: 3px solid var(--signal);
  padding: 0.2rem 0 0.2rem 1.6rem;
  margin: 0;
}

.pullquote p {
  font-family: var(--font-display);
  font-size: var(--step-2);
  line-height: 1.22;
  color: var(--ink);
  max-width: 30ch;
  margin: 0;
}

/* cadena del mecanismo */
.chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 720px) {
  .chain {
    grid-template-columns: repeat(2, 1fr);
  }
}

.chain li {
  background: var(--card);
  padding: 1.1rem 1.2rem;
  display: flex;
  gap: 0.9rem;
  align-items: baseline;
}

.chain li[data-covered='true'] {
  background: #f3f5f1;
}

.chain__n {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  flex: none;
  padding-top: 0.2rem;
}

.chain__label {
  font-size: 0.98rem;
  font-weight: 500;
}

.chain__note {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pine);
  margin-top: 0.3rem;
}

/* flujo AUDIENCIA → SISTEMA */
.flow {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}

.flow__item {
  border: 1px solid var(--line);
  background: var(--card);
  padding: clamp(1.1rem, 2.5vw, 1.6rem) clamp(1.2rem, 3vw, 2rem);
  display: grid;
  gap: 0.35rem 1.5rem;
  grid-template-columns: 1fr;
  align-items: baseline;
}

@media (min-width: 700px) {
  .flow__item {
    grid-template-columns: 13rem 1fr;
  }
}

.flow__item h3 {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
  font-weight: 500;
}

.flow__item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.flow__item--focus {
  border-color: var(--pine);
  box-shadow: inset 3px 0 0 var(--pine);
}

.flow__arrow {
  display: flex;
  justify-content: center;
  padding: 0.55rem 0;
  color: var(--line-strong);
}

/* pasos del recurso */
.steps {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 760px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

.steps li {
  background: var(--card);
  padding: clamp(1.2rem, 3vw, 1.9rem);
}

.steps li .tag {
  margin-bottom: 0.9rem;
}

.steps li h3 {
  margin-bottom: 0.4rem;
}

.steps li p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.steps li ul {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  color: var(--ink-mute);
  font-size: 0.88rem;
}

/* cajas genéricas */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.3rem, 3vw, 2rem);
}

.card--pine {
  background: var(--pine);
  color: #eef0eb;
  border-color: var(--pine);
}

.card--pine h2,
.card--pine h3 {
  color: #fbfaf7;
}

.card--pine p {
  color: rgba(238, 240, 235, 0.82);
}

.card--pine a {
  color: #e8d8c6;
}

.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--signal);
  background: rgba(255, 255, 255, 0.6);
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.notice strong {
  color: var(--ink);
}

.notice p {
  margin: 0;
  max-width: 62ch;
}

.notice svg {
  flex: none;
  color: var(--signal);
  margin-top: 0.15rem;
}

.two-cols {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .two-cols {
    grid-template-columns: 1fr 1fr;
  }
}

.checklist,
.crosslist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.checklist li,
.crosslist li {
  display: grid;
  grid-template-columns: 1.2rem 1fr;
  gap: 0.7rem;
  font-size: 0.96rem;
  color: var(--ink-soft);
  align-items: start;
}

.checklist li::before {
  content: '';
  width: 9px;
  height: 9px;
  margin-top: 0.5rem;
  background: var(--pine);
  border-radius: 50%;
}

.crosslist li::before {
  content: '';
  width: 9px;
  height: 1px;
  margin-top: 0.85rem;
  background: var(--line-strong);
}

/* ---------- formulario ---------- */

.capture {
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.capture__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 900px) {
  .capture__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  }
}

.form {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3.5vw, 2rem);
  box-shadow: var(--shadow-soft);
}

.form__title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 1.3rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}

.field {
  margin-bottom: 1.1rem;
}

.field label {
  display: block;
  font-size: 0.86rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.field input[type='text'],
.field input[type='email'],
input.input,
textarea.input,
select.input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
input.input:focus,
textarea.input:focus,
select.input:focus {
  border-color: var(--pine);
  box-shadow: 0 0 0 3px rgba(30, 59, 50, 0.1);
  outline: none;
}

.field[data-invalid='true'] input {
  border-color: var(--danger);
}

.field__error {
  display: none;
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 0.35rem;
}

.field[data-invalid='true'] .field__error {
  display: block;
}

.consent {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: start;
  font-size: 0.84rem;
  color: var(--ink-soft);
  line-height: 1.45;
  margin-bottom: 1.2rem;
}

.consent input {
  width: 17px;
  height: 17px;
  margin-top: 0.15rem;
  accent-color: var(--pine);
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__footnote {
  font-size: 0.76rem;
  color: var(--ink-mute);
  margin: 1rem 0 0;
  line-height: 1.5;
}

.form__status {
  display: none;
  margin-top: 1rem;
  font-size: 0.88rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius);
}

.form__status[data-state='error'] {
  display: block;
  background: rgba(143, 47, 36, 0.08);
  border: 1px solid rgba(143, 47, 36, 0.3);
  color: var(--danger);
}

.form__status[data-state='success'] {
  display: block;
  background: rgba(30, 59, 50, 0.07);
  border: 1px solid rgba(30, 59, 50, 0.25);
  color: var(--pine);
}

.is-loading {
  position: relative;
  color: transparent !important;
}

.is-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 3rem 2.5rem;
  font-size: 0.86rem;
  color: var(--ink-mute);
}

.site-footer__grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.site-footer h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.8rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.site-footer a {
  color: var(--ink-mute);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.site-footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---------- utilidades ---------- */

.center {
  text-align: center;
}

.center p {
  margin-inline: auto;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.consent-field[data-invalid='true'] input[type='checkbox'] {
  outline: 2px solid var(--danger);
  outline-offset: 2px;
}