/**
 * Global floating button stack (WhatsApp + Back-to-Top)
 * Single source of truth – loaded after every other CSS.
 * Hides legacy `.floating-contact` / `.back-to-top-wrapper` if pages still have them.
 */

/* ── Stack wrapper ─────────────────────────────────── */
.float-stack {
  position: fixed;
  right: max(22px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 1100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  pointer-events: none;
  transition: transform 0.28s ease;
}

@media print {
  .float-stack {
    display: none !important;
  }
}

/* Lift stack when footer is visible so buttons don't cover footer CTAs */
.float-stack.is-footer-near {
  transform: translateY(calc(-1 * var(--sf-float-lift, 96px)));
}

/* ── Shared button base ────────────────────────────── */
.float-stack__btn {
  pointer-events: auto;
  width: 52px;
  height: 52px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  cursor: pointer;
  color: #fff;
  text-decoration: none;
  transition: transform 0.22s ease, box-shadow 0.22s ease,
              opacity 0.22s ease, visibility 0.22s ease, background 0.22s ease;
}

.float-stack__btn:hover {
  transform: translateY(-3px);
  color: #fff;
}

.float-stack__btn:active {
  transform: translateY(-1px);
}

.float-stack__btn:focus-visible {
  outline: 2px solid var(--brand-accent, #ffb302);
  outline-offset: 3px;
}

.float-stack__btn svg {
  display: block;
  color: #fff;
}

/* ── WhatsApp (always visible, top of stack) ───────── */
.float-stack__btn--wa {
  background: linear-gradient(135deg, #25d366 0%, #1faa55 60%, #128c7e 100%);
  box-shadow: 0 10px 28px rgba(37, 211, 102, 0.34),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
  position: relative;
  animation: float-wa-pulse 2.8s ease-in-out infinite;
}

@keyframes float-wa-pulse {
  0%, 100% {
    box-shadow: 0 10px 28px rgba(37, 211, 102, 0.34),
                inset 0 1px 0 rgba(255, 255, 255, 0.2),
                0 0 0 0 rgba(37, 211, 102, 0.35);
  }
  50% {
    box-shadow: 0 10px 28px rgba(37, 211, 102, 0.34),
                inset 0 1px 0 rgba(255, 255, 255, 0.2),
                0 0 0 10px rgba(37, 211, 102, 0);
  }
}

.float-stack__btn--wa::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 211, 102, 0.28), transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.float-stack__btn--wa:hover {
  background: linear-gradient(135deg, #2de070 0%, #25c060 60%, #149c8c 100%);
  box-shadow: 0 14px 34px rgba(37, 211, 102, 0.44),
              inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

/* ── Back-to-top (below WhatsApp; fades in after scroll) ── */
.float-stack__btn--top {
  background: linear-gradient(135deg, var(--brand-blue, #0b2b6f) 0%, var(--brand-navy, #071a42) 100%);
  box-shadow: 0 10px 28px rgba(11, 43, 111, 0.4),
              inset 0 1px 0 rgba(255, 255, 255, 0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  pointer-events: none;
}

.float-stack__btn--top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.float-stack__btn--top.is-visible:hover {
  background: linear-gradient(135deg, #0e337f 0%, #0a2456 100%);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(11, 43, 111, 0.48),
              inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.float-stack.is-footer-near .float-stack__btn--top.is-visible:hover,
.float-stack.is-footer-near .float-stack__btn--wa:hover {
  transform: translateY(-3px);
}

/* ── Hide legacy floating button HTML ──────────────── */
.floating-contact,
.back-to-top-wrapper {
  display: none !important;
}

.floating-contact.is-hidden,
.back-to-top-wrapper.is-hidden {
  display: none !important;
}

/* ── Mobile ────────────────────────────────────────── */
@media (max-width: 767.98px) {
  .float-stack {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
    gap: 10px;
  }

  .float-stack.is-footer-near {
    transform: translateY(calc(-1 * var(--sf-float-lift, 82px)));
  }

  .page-home .float-stack__btn--wa {
    display: none;
  }

  .page-home .float-stack {
    bottom: calc(76px + env(safe-area-inset-bottom, 0px));
  }

  .page-home .float-stack.is-footer-near {
    transform: translateY(calc(-1 * var(--sf-float-lift, 72px)));
  }
}

@media (max-width: 575.98px) {
  .float-stack {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    gap: 8px;
  }

  .float-stack__btn {
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
  }

  .float-stack__btn svg {
    width: 20px;
    height: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .float-stack,
  .float-stack__btn,
  .float-stack__btn--top,
  .float-stack__btn--wa {
    transition: none;
    animation: none;
  }

  .float-stack.is-footer-near {
    transform: translateY(calc(-1 * var(--sf-float-lift, 96px)));
  }
}