/* =========================================================
   Day Innovate AI — sitio oficial
   Paleta tomada de la identidad existente (ai-sales-copilot)
   ========================================================= */

:root {
  --brand: #e94499;
  --brand-strong: #c1267a;
  --brand-soft: #fdeef6;
  --brand-line: #f5c1dc;

  --ink: #1c1826;
  --ink-muted: #5e5869;
  --dark: #1d1726;
  --dark-2: #2a2236;
  --dark-text: #ece8f1;
  --dark-muted: #a79fb3;

  --canvas: #f6f5f8;
  --surface: #ffffff;
  --line: #e6e3ea;
  --ok: #3ddc84;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgb(28 24 38 / 0.04), 0 8px 24px -12px rgb(28 24 38 / 0.18);
  --font: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.container--narrow { width: min(780px, 100% - 32px); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
  transition: background .2s, border-color .2s, transform .2s, color .2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--primary { background: var(--brand-strong); color: #fff; }
.btn--primary:hover { background: #a81f69; }
.btn--ghost-light { border-color: rgb(255 255 255 / 0.28); color: #fff; }
.btn--ghost-light:hover { border-color: #fff; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-row--center { justify-content: center; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  background: rgb(29 23 38 / 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgb(255 255 255 / 0.06);
  transition: background .25s;
}
.header.is-scrolled { background: rgb(29 23 38 / 0.94); }
.header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 10px; color: #fff; }
.brand img { border-radius: 8px; }
.brand__name { font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand__name b { color: var(--brand); font-weight: 800; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { color: var(--dark-text); font-size: 15px; font-weight: 500; opacity: .85; }
.nav a:not(.btn):hover { opacity: 1; color: #fff; }

.menu-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-toggle span { display: block; width: 22px; height: 2px; margin: 5px 0; background: #fff; border-radius: 2px; transition: transform .25s, opacity .25s; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Secciones ---------- */
.section { padding: 104px 0; }
.section--tint { background: var(--canvas); }
.section--dark { background: var(--dark); color: var(--dark-text); }

.section__head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(30px, 4vw, 42px); margin-bottom: 14px; }
.section__head p { color: var(--ink-muted); font-size: 18px; }
.section__head--light h2 { color: #fff; }

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--brand-strong);
}
.eyebrow--light { color: var(--brand); }
.section__head .eyebrow { font-size: 13px; color: var(--brand-strong); }
.section__head .eyebrow--light { color: var(--brand); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 88px) 0 112px;
  overflow: hidden;
  background:
    radial-gradient(600px 400px at 85% 20%, rgb(233 68 153 / 0.22), transparent 70%),
    radial-gradient(500px 360px at 10% 100%, rgb(233 68 153 / 0.10), transparent 70%),
    var(--dark);
}
.hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5vw, 58px); color: #fff; margin-bottom: 22px; font-weight: 800; }
.accent { color: var(--brand); }
.lead { font-size: 19px; color: var(--dark-muted); max-width: 560px; margin-bottom: 32px; }
.hero__note { margin-top: 18px; font-size: 14px; color: var(--dark-muted); }

/* Chat ilustrativo */
.hero__visual { position: relative; }
.chat {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 30px 80px -20px rgb(0 0 0 / 0.55);
  overflow: hidden;
  max-width: 420px;
  margin-left: auto;
}
.chat__head { display: flex; align-items: center; gap: 12px; padding: 14px 18px; background: var(--brand-strong); color: #fff; }
.chat__head small { display: block; font-size: 12px; opacity: .8; }
.chat__head strong { font-size: 15px; }
.chat__avatar { width: 38px; height: 38px; border-radius: 50%; background: #fff; color: var(--brand-strong); display: grid; place-items: center; font-weight: 800; }
.chat__body { padding: 18px; display: flex; flex-direction: column; gap: 10px; background: var(--canvas); }
.msg { max-width: 85%; padding: 10px 14px; border-radius: 14px; font-size: 14px; line-height: 1.45; color: var(--ink); }
.msg--in { background: #fff; align-self: flex-start; border-bottom-left-radius: 4px; box-shadow: 0 1px 2px rgb(0 0 0 / .06); }
.msg--out { background: var(--brand-soft); align-self: flex-end; border-bottom-right-radius: 4px; }
.msg--system { align-self: center; max-width: 100%; font-size: 12px; color: var(--ink-muted); background: #fff; border: 1px dashed var(--brand-line); border-radius: 999px; padding: 6px 12px; text-align: center; }

.float-card {
  position: absolute;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: var(--dark-2);
  border: 1px solid rgb(255 255 255 / 0.08);
  border-radius: 12px;
  font-size: 13px; font-weight: 600; color: #fff;
  box-shadow: 0 12px 30px -10px rgb(0 0 0 / .5);
}
.float-card--a { top: -22px; left: 0; }
.float-card--b { bottom: -22px; right: -14px; }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot--ok { background: var(--ok); }
.dot--brand { background: var(--brand); }

/* ---------- Grids y tarjetas ---------- */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s, box-shadow .2s;
}
.card:hover { border-color: var(--brand-line); box-shadow: var(--shadow); }
.card__icon { width: 48px; height: 48px; border-radius: 12px; background: var(--brand-soft); display: grid; place-items: center; margin-bottom: 20px; }
.card__icon svg { width: 24px; height: 24px; fill: none; stroke: var(--brand-strong); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--ink-muted); font-size: 15px; }

.service {
  padding: 32px 28px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.service__num { display: block; font-size: 14px; font-weight: 800; color: var(--brand); margin-bottom: 18px; }
.service h3 { font-size: 20px; margin-bottom: 10px; }
.service p { color: var(--ink-muted); font-size: 15px; }

/* ---------- Pasos ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: none; }
.step { position: relative; }
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 24px; left: 64px; right: -20px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-line), transparent);
}
.step__num {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--brand-strong); color: #fff;
  font-weight: 800; font-size: 18px;
  margin-bottom: 20px;
}
.step h3 { font-size: 19px; margin-bottom: 8px; }
.step p { color: var(--ink-muted); font-size: 15px; }

/* ---------- Principios ---------- */
.principle {
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--dark-2);
  border: 1px solid rgb(255 255 255 / 0.06);
  border-top: 3px solid var(--brand);
}
.principle h3 { color: #fff; font-size: 20px; margin-bottom: 12px; }
.principle p { color: var(--dark-muted); font-size: 15px; }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); transition: border-color .2s; }
.faq details[open] { border-color: var(--brand-line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 56px 20px 24px;
  font-weight: 700;
  font-size: 17px;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute; right: 24px; top: 50%;
  transform: translateY(-50%);
  font-size: 24px; font-weight: 500; color: var(--brand-strong);
  transition: transform .2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 24px 22px; color: var(--ink-muted); }

/* ---------- CTA final ---------- */
.cta-final {
  background:
    radial-gradient(700px 360px at 50% 0%, rgb(233 68 153 / 0.22), transparent 70%),
    var(--dark);
}
.cta-final__inner { text-align: center; max-width: 720px; }
.cta-final h2 { color: #fff; font-size: clamp(30px, 4.5vw, 46px); margin-bottom: 16px; }
.cta-final p { color: var(--dark-muted); font-size: 18px; margin-bottom: 32px; }

/* ---------- Footer ---------- */
.footer { background: #15111c; color: var(--dark-muted); padding: 56px 0 28px; }
.footer__inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgb(255 255 255 / 0.08); }
.footer__brand p { margin-top: 12px; font-size: 15px; }
.footer__links { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.footer__links a { font-size: 15px; }
.footer__links a:hover { color: #fff; }
.footer__legal { padding-top: 24px; font-size: 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .step::after { display: none; }
}

@media (max-width: 880px) {
  .menu-toggle { display: block; }
  .nav {
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px;
    background: var(--dark);
    border-bottom: 1px solid rgb(255 255 255 / 0.08);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding: 12px 8px; }
  .nav__cta { margin-top: 8px; }

  .hero { padding: calc(var(--header-h) + 56px) 0 80px; }
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .chat { margin: 0 auto; }
  .float-card--a { left: 0; }
  .float-card--b { right: 0; }

  .grid--3 { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
}

@media (max-width: 560px) {
  .grid--4, .steps { grid-template-columns: 1fr; }
  .cta-row .btn { width: 100%; }
  .float-card { display: none; }
  .section__head { margin-bottom: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}