/* ==========================================================================
   Cova Systems — landing
   Ported from the Claude Design file "Cova Code Landing v2.dc.html".
   ========================================================================== */

:root {
  /* Palette */
  --bone: #F4F1EA;
  --ink: #111111;
  --ink-soft: #54504A;
  --brass: #A68A5B;
  --brass-soft: rgba(166, 138, 91, 0.45);
  --night: #0E0E0E;

  /* Rules */
  --rule: rgba(17, 17, 17, 0.12);
  --rule-strong: rgba(17, 17, 17, 0.35);
  --rule-invert: rgba(244, 241, 234, 0.16);

  /* Ink on dark sections */
  --on-night: #F4F1EA;
  --on-night-soft: rgba(244, 241, 234, 0.88);
  --on-night-mute: rgba(244, 241, 234, 0.8);

  /* Type */
  --serif: "Newsreader", Georgia, serif;
  --sans: "Schibsted Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  /* Layout */
  --shell: 1400px;
  --gutter: clamp(20px, 5vw, 72px);

  --danger: #B3261E;
  --danger-on-dark: #E8907C;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* --------------------------------------------------------------- base --- */

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--brass); }

::selection { background: var(--brass); color: var(--bone); }

.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

@keyframes rielDraw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Scroll reveal — only armed once JS confirms IntersectionObserver support,
   so the page stays fully readable without JS. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 241, 234, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header__inner {
  padding-top: 18px;
  padding-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark { display: flex; align-items: baseline; gap: 10px; }
.wordmark__name {
  font-family: var(--serif);
  font-size: 29px;
  line-height: 1;
  letter-spacing: -0.01em;
}
.wordmark__suffix {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: var(--ink-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 36px);
  flex-wrap: wrap;
  justify-content: flex-end;
}
.site-nav__link {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ------------------------------------------------------------ buttons --- */

.btn {
  display: inline-block;
  font-family: var(--sans);
  line-height: 1.2;
  text-align: center;
  border: 0;
  background: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 999px;
  transition:
    background-color .25s var(--ease),
    border-color .25s var(--ease),
    color .25s var(--ease),
    transform .25s var(--ease);
}

.btn--outline-sm {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--ink);
  border: 1px solid var(--ink);
  padding: 10px 20px;
  white-space: nowrap;
}
.btn--outline-sm:hover { background: var(--ink); color: var(--bone); }

.btn--solid {
  font-size: 14px;
  padding: 15px 30px;
  background: var(--ink);
  color: var(--bone);
  border: 1px solid var(--ink);
}
.btn--solid:hover {
  background: var(--night);
  color: var(--bone);
  transform: translateY(-1px);
}

.btn--ghost {
  font-size: 14px;
  padding: 15px 30px;
  border: 1px solid var(--rule-strong);
  color: var(--ink);
}
.btn--ghost:hover {
  border-color: var(--ink);
  background: rgba(17, 17, 17, 0.04);
}

.btn--invert {
  font-size: 15px;
  padding: 17px 34px;
  background: var(--bone);
  color: var(--night);
}
.btn--invert:hover { background: var(--brass); color: var(--night); }

/* -------------------------------------------------------------- rules --- */
/* The "riel": a pair of hairlines, brass over a softer echo. */

.rules { display: flex; flex-direction: column; gap: 4px; }
.rules--tight { gap: 3px; }

.rules__line {
  height: 1px;
  background: var(--brass);
  transform-origin: left;
}
.rules__line--soft { background: var(--brass-soft); }
.rules--tight .rules__line--soft { background: rgba(166, 138, 91, 0.4); }

.rules--draw .rules__line { animation: rielDraw 1.1s var(--ease) both; }
.rules--draw .rules__line--soft { animation: rielDraw 1.4s .12s var(--ease) both; }

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

.hero {
  padding-top: clamp(56px, 11vh, 140px);
  padding-bottom: clamp(40px, 7vh, 96px);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.eyebrow__dot { color: var(--brass); }

.hero__rules { margin: 28px 0 0; }

.hero__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(42px, 7.6vw, 118px);
  line-height: 1.02;
  letter-spacing: -0.022em;
  margin: clamp(28px, 5vh, 56px) 0 0;
  max-width: 18ch;
  text-wrap: pretty;
}

.hero__foot {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(24px, 4vw, 64px);
  align-items: end;
  margin-top: clamp(28px, 5vh, 56px);
}
.hero__lead {
  margin: 0;
  font-size: clamp(16px, 1.25vw, 19px);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 52ch;
  text-wrap: pretty;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ----------------------------------------------------------- audience --- */

.audience {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.audience__inner {
  padding-top: 18px;
  padding-bottom: 18px;
  display: flex;
  gap: clamp(18px, 4vw, 56px);
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.audience__label { color: var(--brass); }

/* ------------------------------------------------------- section head --- */

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  flex-wrap: wrap;
}
.section-head__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0;
}
.section-head__meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink);
  margin-bottom: 14px;
}

/* ------------------------------------------------------------ services --- */

.services {
  padding-top: clamp(64px, 12vh, 148px);
  padding-bottom: clamp(64px, 12vh, 148px);
}
.services .section-head { margin-bottom: clamp(36px, 6vh, 72px); }

/* 1px gap over a tinted container paints the hairline grid. */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.service {
  background: var(--bone);
  padding: clamp(28px, 3vw, 44px) clamp(20px, 2.4vw, 36px) clamp(36px, 4vw, 56px);
}
.service__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink);
}
.service__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(23px, 2vw, 30px);
  line-height: 1.15;
  margin: 16px 0 12px;
}
.service__body {
  margin: 0;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* --------------------------------------------------------- guardrails --- */

.guardrails {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.guardrails__inner {
  padding-top: clamp(36px, 6vh, 64px);
  padding-bottom: clamp(36px, 6vh, 64px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}
.guardrails__claim {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(21px, 2.2vw, 30px);
  line-height: 1.3;
  max-width: 26ch;
  text-wrap: pretty;
}
.guardrails__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
}
.guardrails__item {
  border-top: 1px solid var(--brass);
  padding-top: 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

/* --------------------------------------------------------------- cases --- */

.cases-intro { padding-top: clamp(64px, 12vh, 140px); }

.case { border-bottom: 1px solid var(--rule); }
.case__inner {
  padding-top: clamp(56px, 10vh, 120px);
  padding-bottom: clamp(56px, 10vh, 120px);
}
.case__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: clamp(32px, 6vw, 104px);
  align-items: start;
}
.case__tag {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.case__num { color: var(--ink); }
.case__dash { width: 28px; height: 1px; background: var(--brass); }
.case__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 4.6vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 24px 0 0;
  max-width: 13ch;
  color: var(--ink);
  text-wrap: balance;
}
.case__body {
  margin: 0;
  font-size: clamp(17px, 1.3vw, 19px);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 54ch;
  text-wrap: pretty;
}

.case--dark {
  background: var(--night);
  color: var(--on-night);
  border-bottom: 0;
}
.case--dark .case__tag { color: var(--on-night-mute); }
.case--dark .case__num,
.case--dark .case__title { color: var(--on-night); }
.case--dark .case__body { color: var(--on-night-soft); }

/* ---------------------------------------------------------------- rail --- */
/* Numbered list flanked by the double hairline. */

.rail {
  position: relative;
  padding-left: 32px;
  margin-top: clamp(28px, 4vh, 44px);
}
.rail::before,
.rail::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
}
.rail::before { left: 0; background: var(--brass); }
.rail::after { left: 5px; background: var(--brass-soft); }

.rail__row {
  display: flex;
  gap: 18px;
  align-items: baseline;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
}
.rail__row:last-child { border-bottom: 1px solid var(--rule); }
.rail__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  min-width: 24px;
}
.rail__text { font-size: 17px; line-height: 1.45; color: var(--ink); }

.case--dark .rail__row { border-top-color: var(--rule-invert); }
.case--dark .rail__row:last-child { border-bottom-color: var(--rule-invert); }
.case--dark .rail__num { color: rgba(244, 241, 234, 0.75); }
.case--dark .rail__text { color: var(--on-night); }

/* -------------------------------------------------------------- method --- */

.method {
  padding-top: clamp(64px, 12vh, 148px);
  padding-bottom: clamp(64px, 12vh, 148px);
}
.method .section-head { margin-bottom: clamp(36px, 6vh, 72px); }
.method__rules { margin-bottom: clamp(28px, 4vh, 48px); }
.method__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: clamp(24px, 3vw, 48px);
}
.step__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink);
}
.step__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.15;
  margin: 14px 0 10px;
}
.step__body {
  margin: 0;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* ------------------------------------------------------------- contact --- */

.contact { background: var(--night); color: var(--on-night); }
.contact__inner {
  padding-top: clamp(72px, 14vh, 170px);
  padding-bottom: clamp(72px, 14vh, 170px);
}
.contact__rules {
  max-width: 420px;
  margin-bottom: clamp(28px, 5vh, 52px);
}
.contact__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 4.4vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 14ch;
  color: var(--on-night);
  text-wrap: pretty;
}
.mail-link {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--on-night);
  border-bottom: 1px solid rgba(166, 138, 91, 0.6);
  padding-bottom: 4px;
  transition: color .25s var(--ease);
}
.mail-link:hover { color: var(--brass); }

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

.site-footer {
  background: var(--night);
  color: var(--on-night-mute);
  border-top: 1px solid rgba(244, 241, 234, 0.14);
}
.site-footer__inner {
  padding-top: 28px;
  padding-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.site-footer__brand { display: flex; align-items: baseline; gap: 9px; }
.site-footer__name {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--on-night);
}
.site-footer__links {
  display: flex;
  gap: clamp(16px, 2.5vw, 32px);
  flex-wrap: wrap;
}
.site-footer__links a { color: var(--on-night-mute); }
.site-footer__links a:hover { color: var(--brass); }

/* ----------------------------------------------------- reduced motion --- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rules--draw .rules__line { animation: none; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
  .btn--solid:hover { transform: none; }
}

/* ========================================================================== */
/* Formulario de contacto (inline, sobre fondo oscuro)                        */
/* ========================================================================== */

[hidden] { display: none !important; }

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.contact__aside {
  margin: clamp(28px, 4vh, 40px) 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--on-night-mute);
}

/* ---------------------------------------------------------------- form --- */

.form { display: grid; gap: clamp(18px, 3vh, 24px); }

.field { display: grid; gap: 8px; }
.field__label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.field__input,
.field__textarea {
  font-family: var(--sans);
  font-size: 16px; /* 16px evita que iOS Safari haga zoom al enfocar */
  line-height: 1.5;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  border-radius: 0;
  padding: 8px 0;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field__input:focus-visible,
.field__textarea:focus-visible {
  outline: none;
  border-bottom-color: var(--brass);
  box-shadow: 0 1px 0 0 var(--brass);
}
.field__textarea { resize: vertical; min-height: 104px; }

.field--invalid .field__input,
.field--invalid .field__textarea { border-bottom-color: var(--danger); }
.field--invalid .field__input:focus-visible,
.field--invalid .field__textarea:focus-visible { box-shadow: 0 1px 0 0 var(--danger); }

.field__error {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--danger);
}

/* Fuera de pantalla en vez de display:none — los bots saltean lo oculto. */
.form__honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form__foot {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.form__status {
  margin: 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  max-width: 34ch;
  line-height: 1.5;
}

.btn[disabled] { opacity: .55; cursor: progress; }
.btn[disabled]:hover { transform: none; }

/* ------------------------------------------------- variante sobre dark --- */

.form--on-dark .field__label { color: rgba(244, 241, 234, 0.62); }

.form--on-dark .field__input,
.form--on-dark .field__textarea {
  color: var(--on-night);
  border-bottom-color: rgba(244, 241, 234, 0.3);
  caret-color: var(--brass);
}
.form--on-dark .field__input::placeholder,
.form--on-dark .field__textarea::placeholder { color: rgba(244, 241, 234, 0.4); }

.form--on-dark .field--invalid .field__input,
.form--on-dark .field--invalid .field__textarea { border-bottom-color: var(--danger-on-dark); }
.form--on-dark .field--invalid .field__input:focus-visible,
.form--on-dark .field--invalid .field__textarea:focus-visible { box-shadow: 0 1px 0 0 var(--danger-on-dark); }

.form--on-dark .field__error { color: var(--danger-on-dark); }
.form--on-dark .form__status { color: var(--on-night-mute); }
.form--on-dark .form__status--error { color: var(--danger-on-dark); }

/* Sin esto el autofill de Chrome pinta los campos de blanco sobre el negro. */
.form--on-dark .field__input:-webkit-autofill,
.form--on-dark .field__input:-webkit-autofill:hover,
.form--on-dark .field__input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--on-night);
  -webkit-box-shadow: 0 0 0 1000px var(--night) inset;
  caret-color: var(--brass);
}

.btn--ghost-invert {
  font-size: 14px;
  padding: 15px 30px;
  border: 1px solid rgba(244, 241, 234, 0.35);
  color: var(--on-night);
}
.btn--ghost-invert:hover {
  border-color: var(--on-night);
  background: rgba(244, 241, 234, 0.06);
  color: var(--on-night);
}

/* ------------------------------------------------------ estado enviado --- */

.form__done:focus { outline: none; }
.form__done-rules { max-width: 120px; margin-bottom: clamp(18px, 3vh, 26px); }
.form__done-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
  color: var(--on-night);
}
.form__done-text {
  margin: 0 0 clamp(24px, 4vh, 32px);
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-night-soft);
  max-width: 42ch;
  text-wrap: pretty;
}

@media (prefers-reduced-motion: reduce) {
  .field__input,
  .field__textarea { transition: none; }
}