/* ============================================================
   CODESA — Identidad visual
   Dirección: "Minimalista monocromo"
   Casi-negro azulado + grises elegantes · mucho blanco ·
   Serif display + sans de apoyo
   ============================================================ */

:root {
  --ink-950: #14181d;
  --ink-900: #1b2129;
  --ink-700: #3a434e;
  --gray-600: #5c6570;
  --gray-400: #98a0a9;
  --gray-200: #dfe2e6;
  --gray-100: #f4f5f7;
  --white: #ffffff;
  --radius: 12px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
}

.container { max-width: 1000px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; font-weight: 600; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: 8px; }
h3 { font-size: 1.05rem; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 14px;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  background: var(--ink-900);
  color: var(--white);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn--light { background: var(--white); color: var(--ink-900); }
.btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn--small { padding: 8px 20px; font-size: 0.85rem; }
.btn--full { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-200);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--ink-900);
}
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a { text-decoration: none; color: var(--gray-600); font-size: 0.9rem; white-space: nowrap; }
.nav__links a:hover:not(.btn) { color: var(--ink-900); }
.nav__links .btn { color: var(--white); }

/* ---------- Menú desplegable ---------- */
.nav__item { position: relative; }
.nav__caret {
  display: inline-block;
  font-size: 0.6rem;
  vertical-align: middle;
  margin-left: 2px;
  transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.nav__item:hover .nav__caret { transform: rotate(180deg); }
.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 10px);
  min-width: 230px;
  padding: 8px;
  margin-top: 14px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: 0 24px 50px rgba(20, 24, 29, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1),
              visibility 0s linear 0.3s;
}
.nav__dropdown::before {
  /* puente invisible para no perder el hover entre el enlace y el menú */
  content: "";
  position: absolute;
  top: -16px;
  left: 0;
  width: 100%;
  height: 16px;
}
.nav__item:hover .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
  transition-delay: 0s;
}
.nav__dropdown a {
  display: block;
  padding: 10px 14px;
  border-radius: 9px;
  font-size: 0.9rem;
  color: var(--ink-900);
  text-decoration: none;
  transition: background 0.2s ease;
}
.nav__dropdown a:hover { background: var(--gray-100); }
.nav__group {
  display: block;
  padding: 14px 14px 4px;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.nav__group:first-child { padding-top: 8px; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(170deg, var(--ink-950), var(--ink-900) 70%, var(--ink-700));
  color: var(--white);
  padding: 120px 0 130px;
  text-align: center;
}
.hero .eyebrow { color: var(--gray-400); }
.hero h1 em { font-style: italic; color: var(--gray-400); }
.hero__lead {
  margin: 24px auto 36px;
  max-width: 52ch;
  color: var(--gray-200);
  font-size: 1.05rem;
}
.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Secciones ---------- */
.section { padding: 100px 0; }
.section--dark { background: var(--ink-950); color: var(--white); }
.section--dark .eyebrow { color: var(--gray-400); }
.section--gray { background: var(--gray-100); }

/* ---------- Áreas de servicio ---------- */
.area { margin-top: 64px; }
.area__title { font-size: 1.35rem; }
.area__desc { color: var(--gray-600); font-size: 0.95rem; margin-top: 6px; max-width: 60ch; }
.area .grid { margin-top: 28px; }
.grid.grid--2 { grid-template-columns: repeat(2, 1fr); }

/* ---------- Etiquetas ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tags span {
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.82rem;
  color: var(--gray-600);
  background: var(--white);
}
.feature-list--tight { margin: 0; }

/* ---------- Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
              box-shadow 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.card:hover {
  border-color: var(--gray-400);
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(20, 24, 29, 0.08);
}
.card p { font-size: 0.88rem; color: var(--gray-600); margin-top: 8px; }
.card__more {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-400);
  transition: color 0.3s ease, transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.card:hover .card__more { color: var(--ink-900); transform: translateX(4px); }

/* ---------- Claim ---------- */
.claim {
  background: var(--gray-100);
  padding: 72px 0;
  text-align: center;
}
.claim p {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  font-style: italic;
  color: var(--ink-700);
  max-width: 44ch;
  margin: 0 auto;
}

/* ---------- Proceso ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  list-style: none;
  counter-reset: none;
}
.steps li { border-top: 2px solid var(--ink-900); padding-top: 18px; }
.steps span {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--gray-400);
  display: block;
  margin-bottom: 6px;
}
.steps p { font-size: 0.88rem; color: var(--gray-600); margin-top: 6px; }

/* ---------- Contacto ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact__note { margin-top: 20px; color: var(--gray-400); font-size: 0.95rem; }
.contact__mail { color: var(--gray-200); text-decoration: none; border-bottom: 1px solid var(--ink-700); }
.contact__mail:hover { border-color: var(--gray-400); }

.form { display: flex; flex-direction: column; gap: 14px; }
.form input, .form textarea {
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 13px 16px;
  border: 1px solid var(--ink-700);
  background: transparent;
  color: var(--white);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease;
}
.form input::placeholder, .form textarea::placeholder { color: var(--gray-400); }
.form input:focus, .form textarea:focus { border-color: var(--gray-400); }
.form__status { font-size: 0.85rem; color: var(--gray-400); min-height: 1.4em; margin: 0; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--gray-200); padding: 32px 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; }
.brand--footer { font-size: 0.95rem; }
.footer__inner p { font-size: 0.8rem; color: var(--gray-400); }

/* ---------- Animaciones de aparición ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}
[data-reveal].is-revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ---------- Páginas interiores ---------- */
.container--narrow { max-width: 720px; }

.page-hero {
  background: linear-gradient(170deg, var(--ink-950), var(--ink-900) 70%, var(--ink-700));
  color: var(--white);
  padding: 90px 0 80px;
}
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
.page-hero h1 em { font-style: italic; color: var(--gray-400); }
.page-hero__lead { margin-top: 18px; color: var(--gray-200); font-size: 1.05rem; max-width: 52ch; }
.page-hero .eyebrow { color: var(--gray-400); }

.page-body p { color: var(--ink-700); margin-bottom: 20px; font-size: 1.02rem; }
.page-link { color: var(--ink-900); text-decoration: none; border-bottom: 1px solid var(--gray-400); }

.feature-list { display: grid; gap: 18px; margin: 44px 0; }
.feature {
  border-left: 2px solid var(--ink-900);
  padding: 4px 0 4px 22px;
}
.feature p { font-size: 0.92rem; color: var(--gray-600); margin: 6px 0 0; }

.page-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 44px; }
.btn--outline {
  background: transparent;
  color: var(--ink-900);
  border: 1px solid var(--gray-200);
}
.btn--outline:hover { border-color: var(--gray-400); }

/* ---------- Footer link ---------- */
.footer__link {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer__link:hover { color: var(--ink-900); border-color: var(--gray-400); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid, .steps { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  .nav__inner { height: 60px; }
  .brand { font-size: 0.98rem; letter-spacing: 0.1em; }
  .nav__links { gap: 16px; }
  .nav__links a { font-size: 0.85rem; }
  .nav__links .btn--small { padding: 7px 15px; font-size: 0.8rem; }
  .nav__caret { font-size: 0.55rem; }
  .nav__dropdown {
    position: fixed;
    top: 66px;
    left: 16px;
    right: 16px;
    min-width: 0;
    margin-top: 0;
    transform: translateY(10px);
  }
  .nav__item:hover .nav__dropdown,
  .nav__item:focus-within .nav__dropdown { transform: translateY(0); }
  .footer__inner { flex-direction: column; gap: 8px; text-align: center; }
  .footer__inner p { margin-top: 0; }
}

@media (max-width: 520px) {
  .grid, .grid.grid--2, .steps { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 84px; }
  .hero__actions .btn { width: 100%; max-width: 320px; text-align: center; }
  .page-hero { padding: 64px 0 56px; }
}