/* Header + footer (includes/layout.php). Loaded on every page. */

/* Top bar */
.vs-topbar { background: var(--color-primary); color: color-mix(in srgb, var(--color-on-dark) 72%, transparent); font-size: 0.84rem; }
.vs-topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 42px; }
.vs-topbar__item, .vs-topbar__links a { display: inline-flex; align-items: center; gap: 8px; }
.vs-topbar__links { display: flex; gap: 26px; }
.vs-topbar__links a { transition: color 0.2s; }
.vs-topbar__links a:hover { color: var(--color-on-dark); }
.vs-topbar .vs-icon { color: var(--color-accent-light); }

/* Header */
.vs-header { position: sticky; top: 0; z-index: 100; background: var(--color-bg); border-bottom: 1px solid var(--color-border); transition: box-shadow 0.25s; }
.vs-header.is-scrolled { box-shadow: var(--shadow-sm); }
.vs-header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.vs-logo img { width: 220px; height: auto; }

.vs-nav { display: flex; align-items: center; gap: 2px; }
.vs-nav > a, .vs-nav__drop-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  border: 0;
  background: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-heading);
  cursor: pointer;
}
.vs-nav > a:not(.vs-btn)::after, .vs-nav__drop-btn::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s;
}
.vs-nav > a:hover::after, .vs-nav > a.is-active::after,
.vs-nav__drop-btn:hover::after, .vs-nav__drop-btn.is-active::after { transform: scaleX(1); }
.vs-nav > .vs-nav__cta { margin-left: 14px; padding: 11px 22px; background: var(--color-accent); color: var(--color-on-dark); }
.vs-nav > .vs-nav__cta:hover { background: var(--color-accent-dark); }

.vs-nav__drop { position: relative; }
.vs-nav__drop-btn .vs-icon { transition: transform 0.2s; }
.vs-mega {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  width: 620px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}
.vs-mega::before { content: ''; position: absolute; left: 0; right: 0; top: -22px; height: 22px; }
.vs-nav__drop:hover .vs-mega, .vs-nav__drop:focus-within .vs-mega { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.vs-nav__drop:hover .vs-nav__drop-btn .vs-icon { transform: rotate(180deg); }
.vs-mega__item { display: block; padding: 11px 14px; border-radius: var(--radius); transition: background 0.2s; }
.vs-mega__item:hover { background: var(--color-bg-alt); }
.vs-mega__item strong { display: block; font-size: 0.95rem; font-weight: 700; color: var(--color-heading); }
.vs-mega__item span { display: block; font-size: 0.8rem; color: var(--color-muted); line-height: 1.45; }

.vs-burger {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-heading);
  cursor: pointer;
}
.vs-burger .vs-icon { width: 24px; height: 24px; }
.vs-burger span { display: flex; }
.vs-burger__close, .vs-burger[aria-expanded="true"] .vs-burger__open { display: none !important; }
.vs-burger[aria-expanded="true"] .vs-burger__close { display: flex !important; }

/* Footer */
.vs-footer {
  padding-top: 72px;
  background: var(--color-primary);
  color: color-mix(in srgb, var(--color-on-dark) 68%, transparent);
  font-size: 0.93rem;
}
.vs-footer__grid { display: grid; grid-template-columns: 1.4fr 0.8fr 1fr 1.3fr; gap: 40px; padding-bottom: 56px; }
.vs-footer__logo { display: inline-block; padding: 10px 14px; margin-bottom: 20px; background: var(--color-bg); border-radius: var(--radius); }
.vs-footer__logo img { width: 210px; }
.vs-footer h4 { margin-bottom: 18px; font-size: 1.05rem; color: var(--color-on-dark); }
.vs-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.vs-footer a { transition: color 0.2s; }
.vs-footer a:hover { color: var(--color-accent-light); }
.vs-footer__contact li { display: flex; gap: 12px; align-items: flex-start; }
.vs-footer__contact .vs-icon { margin-top: 4px; color: var(--color-accent-light); }
.vs-footer__bottom { padding: 20px 0; border-top: 1px solid color-mix(in srgb, var(--color-on-dark) 10%, transparent); font-size: 0.85rem; }
.vs-footer__bottom-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
.vs-footer__bottom a { color: var(--color-on-dark); }

/* WhatsApp button */
.vs-whatsapp {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.4);
  transition: transform 0.2s;
}
.vs-whatsapp:hover { transform: scale(1.08); }
.vs-whatsapp svg { width: 30px; height: 30px; }

@media (max-width: 1100px) {
  .vs-nav > a, .vs-nav__drop-btn { padding: 10px; }
  .vs-logo img { width: 200px; }
  .vs-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 991px) {
  .vs-topbar__item { display: none; }
  .vs-topbar__inner { justify-content: center; }
  .vs-logo img { width: 180px; }

  .vs-burger { display: inline-flex; position: relative; z-index: 120; }
  .vs-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 84px 20px 24px;
    background: var(--color-bg);
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s;
    z-index: 110;
  }
  .vs-nav.is-open { transform: none; visibility: visible; box-shadow: var(--shadow); }
  .vs-nav > a, .vs-nav__drop-btn { width: 100%; justify-content: space-between; padding: 14px 6px; border-bottom: 1px solid var(--color-border); }
  .vs-nav > a::after, .vs-nav__drop-btn::after { display: none; }
  .vs-nav > a.is-active, .vs-nav__drop-btn.is-active { color: var(--color-accent); }
  .vs-nav > .vs-nav__cta { margin: 20px 0 0; justify-content: center; border-bottom: 0; }
  .vs-mega { position: static; width: auto; display: none; grid-template-columns: 1fr; padding: 4px 0 8px; border: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .vs-nav__drop:hover .vs-mega, .vs-nav__drop:focus-within .vs-mega { transform: none; }
  .vs-nav__drop.is-open .vs-mega { display: grid; }
  .vs-nav__drop.is-open .vs-nav__drop-btn .vs-icon { transform: rotate(180deg); }
  .vs-nav__drop:hover .vs-nav__drop-btn .vs-icon { transform: none; }
  .vs-mega__item span { display: none; }
  body.vs-nav-open { overflow: hidden; }
  body.vs-nav-open .vs-header { z-index: 130; }
  body.vs-nav-open::after { content: ''; position: fixed; inset: 0; z-index: 105; background: color-mix(in srgb, var(--color-primary) 55%, transparent); }
}

@media (max-width: 767px) {
  .vs-topbar__links { gap: 16px; font-size: 0.8rem; }
  .vs-topbar__links a:last-child { display: none; }
  .vs-footer__grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Footer: download catalogue button */
.vs-footer__download {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 26px;
  padding: 8px 10px 8px 8px;
  border-radius: 14px;
  background: var(--color-accent);
  color: var(--color-on-dark);
  box-shadow: 0 6px 14px -10px color-mix(in srgb, var(--color-accent) 45%, transparent);
  transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
}
.vs-footer__download-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 10px;
  background: color-mix(in srgb, #fff 18%, transparent);
}
.vs-footer__download-icon .vs-icon { width: 22px; height: 22px; }
.vs-footer__download-text { padding-right: 8px; }
.vs-footer__download strong { display: block; font-family: var(--font-heading); font-size: 1rem; font-weight: 700; font-stretch: var(--heading-stretch); line-height: 1.25; color: var(--color-on-dark); }
.vs-footer__download small { display: block; margin-top: 2px; font-size: 0.78rem; letter-spacing: 0.02em; color: color-mix(in srgb, var(--color-on-dark) 82%, transparent); }
.vs-footer__download-arrow {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-on-dark);
  color: var(--color-accent);
  transition: transform 0.25s;
}
.vs-footer__download-arrow .vs-icon { width: 16px; height: 16px; }
.vs-footer a.vs-footer__download:hover {
  color: var(--color-on-dark);
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px -10px color-mix(in srgb, var(--color-accent) 55%, transparent);
}
.vs-footer__download:hover .vs-footer__download-arrow { transform: rotate(45deg); }