/* ==========================================================================
   layout.css — header, footer, grid, contenedores, "barrido" diagonal
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

section { padding-block: var(--space-5); }

.section--tight { padding-block: var(--space-4); }

.section--ink {
  background: var(--color-ink);
  color: var(--color-white);
}

.section--ink h2, .section--ink h3 { color: var(--color-white); }
.section--ink .card__text { color: #B9C4D6; }
.section--ink a:not(.btn) { color: #EAF2FF; text-decoration: underline; }
.section--ink a:not(.btn):hover { color: var(--color-white); }

.section--bg { background: var(--color-bg); }

/* ---- Header ---- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-2);
}

.header__logo img { height: 40px; width: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-3);
}

.nav__list a {
  color: var(--color-ink);
  font-weight: 500;
}

.nav__list a:hover,
.nav__list a[aria-current="page"] {
  color: var(--color-green);
}

.nav__submenu-wrap { position: relative; }

.nav__submenu {
  list-style: none;
  margin: 0;
  padding: var(--space-1);
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  min-width: 220px;
  display: none;
}

.nav__submenu-wrap:hover .nav__submenu,
.nav__submenu-wrap:focus-within .nav__submenu {
  display: block;
}

.nav__submenu a {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.nav__submenu a:hover { background: var(--color-bg); }

.header__cta {
  display: flex;
  gap: var(--space-1);
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
}

.nav__toggle-bar,
.nav__toggle-bar::before,
.nav__toggle-bar::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  position: relative;
  transition: transform 0.2s ease;
}

.nav__toggle-bar::before,
.nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav__toggle-bar::before { top: -7px; }
.nav__toggle-bar::after { top: 7px; }

/* ---- Barrido diagonal (elemento de firma) ---- */
.barrido {
  height: 56px;
  background: var(--color-ink);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.barrido--verde { background: var(--color-green); }
.barrido--azul { background: var(--color-blue); }

/* ---- Footer ---- */
.footer {
  background: var(--color-ink);
  color: var(--color-white);
  padding-block: var(--space-5) var(--space-4);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-4);
}

.footer__logo img { height: 36px; margin-bottom: var(--space-2); }

.footer a { color: #C7D2E3; }
.footer a:hover { color: var(--color-white); }

.footer h4 {
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.footer__bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: 0.85rem;
  color: #9FADC4;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .nav__list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-3);
    gap: var(--space-2);
  }
  .nav__list--open { display: flex; }
  .nav__submenu { position: static; box-shadow: none; display: block; border: none; padding-left: var(--space-2); }
  .nav__toggle { display: block; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; }
  .header__cta .btn span { display: none; }
  .header__cta .btn { padding: 0.7em 0.8em; }
  .header__logo img { height: 32px; }
}