/* ============================================================
   layout.css — header, mega-menu, mobile drawer, footer,
   плаваючі елементи, cookie-banner
   ============================================================ */

/* ===================== HEADER ===================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--glass-white-70);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-base) var(--ease-standard),
              border-color var(--dur-base) var(--ease-standard),
              box-shadow var(--dur-base) var(--ease-standard);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
/* Відступ під фіксований хедер */
body { padding-top: var(--header-h); }

.site-header__inner {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  color: var(--color-brand-primary);
}
.site-logo svg, .site-logo img { height: 36px; width: auto; }
.site-logo__text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.site-logo__text small {
  display: block;
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}

/* ---- Десктоп-навігація ---- */
.main-nav { margin-left: auto; }
.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.main-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-3) var(--space-3);
  font-size: var(--fs-body);
  font-weight: 500;
  white-space: nowrap;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  transition: color var(--dur-micro) var(--ease-standard);
}
.main-nav__link:hover { color: var(--color-brand-accent); }
.main-nav__link.is-active { color: var(--color-brand-accent); font-weight: 600; }

/* Стрілка-індикатор випадного меню «Послуги» */
.nav-caret {
  width: 10px;
  height: 6px;
  margin-top: 2px;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-out);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: var(--space-2);
}
.header-phone {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-brand-primary);
  white-space: nowrap;
}
.header-phone svg { width: 18px; height: 18px; color: var(--color-brand-accent); }

/* ---- Mega-menu ---- */
/* Панель випадає на всю ширину контейнера — не центрується на тригері,
   тож не вилазить за край екрана. */
.has-mega { position: static; }
.mega {
  position: absolute;
  top: calc(100% + 10px);
  left: var(--container-pad);
  right: var(--container-pad);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8) var(--space-8) var(--space-6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--dur-base) var(--ease-standard),
              transform var(--dur-base) var(--ease-out),
              visibility var(--dur-base);
}
.mega::before {
  content: "";
  position: absolute;
  top: -10px; left: 0; right: 0;
  height: 10px;
}
.has-mega:hover .mega,
.has-mega:focus-within .mega {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.has-mega:hover .nav-caret,
.has-mega:focus-within .nav-caret { transform: rotate(180deg); }
.mega__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4) var(--space-6);
}
.mega__col-title {
  font-size: var(--fs-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-subtle);
  margin-bottom: var(--space-3);
}
.mega__link {
  display: block;
  padding: var(--space-3);
  margin-inline: calc(var(--space-3) * -1);
  border-radius: var(--radius-md);
  transition: background var(--dur-micro) var(--ease-standard);
}
.mega__link:hover { background: var(--color-surface-2); }
.mega__link b {
  display: block;
  color: var(--color-ink);
  font-size: var(--fs-body);
}
.mega__link span {
  display: block;
  font-size: var(--fs-small);
  color: var(--color-ink-subtle);
  margin-top: 2px;
}
.mega__link em {
  display: inline-block;
  margin-top: var(--space-2);
  font-style: normal;
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--color-brand-accent);
}
.mega__foot {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.mega__foot p { font-size: var(--fs-small); color: var(--color-ink-muted); }

/* ---- Бургер ---- */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  margin-left: auto;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--color-brand-primary);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-micro) var(--ease-standard);
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Мобільний drawer ---- */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  background: rgba(11, 37, 69, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-standard), visibility var(--dur-base);
}
.drawer-overlay.is-open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: var(--z-drawer);
  width: min(380px, 88vw);
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--dur-base) var(--ease-out);
  overflow-y: auto;
}
.drawer.is-open { transform: translateX(0); }
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.drawer__close {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  color: var(--color-ink-muted);
  border-radius: var(--radius-full);
}
.drawer__close:hover { background: var(--color-surface-3); }
.drawer__body { padding: var(--space-4) var(--space-5); flex: 1; }
.drawer__link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--fs-body-l);
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
}
.drawer__link.is-active { color: var(--color-brand-accent); }

.drawer-acc__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  font-size: var(--fs-body-l);
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
}
.drawer-acc__trigger svg {
  width: 20px; height: 20px;
  transition: transform var(--dur-base) var(--ease-out);
}
.drawer-acc.is-open .drawer-acc__trigger svg { transform: rotate(180deg); }
.drawer-acc__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-base) var(--ease-standard);
}
.drawer-acc.is-open .drawer-acc__panel { grid-template-rows: 1fr; }
.drawer-acc__panel > div { overflow: hidden; }
.drawer-acc__sublink {
  display: block;
  padding: var(--space-3) 0 var(--space-3) var(--space-4);
  font-size: var(--fs-body);
  color: var(--color-ink-muted);
}
.drawer-acc__sublink:hover { color: var(--color-brand-accent); }
.drawer-acc__group {
  margin-top: var(--space-3);
  font-size: var(--fs-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-subtle);
}
.drawer__foot {
  padding: var(--space-5);
  border-top: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-3);
}
.drawer__foot .btn { width: 100%; }
.drawer__contacts {
  display: flex;
  gap: var(--space-3);
}
.drawer__contacts a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--color-brand-primary);
}

/* Перемикання desktop / mobile */
@media (max-width: 1024px) {
  .main-nav, .header-actions { display: none; }
  .nav-toggle { display: flex; }
}
@media (min-width: 1025px) {
  .drawer, .drawer-overlay { display: none; }
}

/* ===================== FOOTER ===================== */
.site-footer {
  background: var(--color-brand-primary);
  color: var(--color-brand-primary-200);
  padding-top: var(--space-20);
}
.site-footer a { color: var(--color-brand-primary-200); }
.site-footer a:hover { color: #fff; }

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: var(--space-10);
  padding-bottom: var(--space-16);
}
.footer-brand .site-logo { color: #fff; margin-bottom: var(--space-4); }
.footer-brand .site-logo__text { color: #fff; }
.footer-brand .site-logo__text small { color: var(--color-brand-primary-200); }
.footer-brand p {
  font-size: var(--fs-small);
  line-height: var(--lh-base);
  max-width: 320px;
}
.footer-col h3 {
  color: #fff;
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}
.footer-col ul { display: grid; gap: var(--space-3); }
.footer-col li a { font-size: var(--fs-small); }
.footer-contacts li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--fs-small);
  margin-bottom: var(--space-3);
}
.footer-contacts svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--color-brand-gold); }
.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.footer-social a {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  transition: background var(--dur-micro) var(--ease-standard);
}
.footer-social a:hover { background: var(--color-brand-accent); }
.footer-social svg { width: 20px; height: 20px; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-block: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--fs-small);
}
.footer-bottom__links { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.footer-disclaimer {
  font-size: var(--fs-caption);
  color: rgba(179, 197, 220, 0.85);  /* WCAG 2.1 AA: підвищено з 0.6 (контраст < 4.5:1) */
  padding-bottom: var(--space-6);
  max-width: 720px;
}

@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ===================== ПЛАВАЮЧІ ЕЛЕМЕНТИ ===================== */
.float-stack {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(12px, 3vw, 28px);
  z-index: var(--z-float);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.float-stack.is-ready { opacity: 1; transform: translateY(0); }

/* Головна кнопка — завжди коло фіксованого розміру (без розтягування) */
.float-toggle {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--color-brand-accent);
  color: #fff;
  box-shadow: var(--shadow-lg);
  transition: transform var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-standard);
}
.float-toggle:hover { transform: translateY(-2px); background: var(--color-brand-accent-600); }
.float-toggle:focus-visible { outline: 2px solid var(--color-brand-primary); outline-offset: 3px; }
.float-toggle__ic { width: 26px; height: 26px; }
.float-toggle__ic--close { display: none; }
.float-stack.is-open .float-toggle__ic--open { display: none; }
.float-stack.is-open .float-toggle__ic--close { display: block; }

/* Список месенджерів — згорнутий; розкривається класом .is-open */
.float-stack__channels {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-standard);
}
.float-stack.is-open .float-stack__channels { max-height: 280px; opacity: 1; }

/* Пункт-месенджер — пігулка з іконкою та підписом */
.float-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 46px;
  padding: 0 18px;
  border-radius: var(--radius-full);
  color: #fff;
  font-weight: 600;
  font-size: var(--fs-small);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  transition: transform var(--dur-base) var(--ease-out),
              filter var(--dur-base) var(--ease-standard);
}
.float-link:hover { transform: translateY(-2px); color: #fff; filter: brightness(1.08); }
.float-link svg { width: 22px; height: 22px; flex-shrink: 0; }
.float-link--tg { background: #0077B5; }  /* WCAG 2.1 AA: затемнено з #0088CC (білий текст < 4.5:1) */
.float-link--phone { background: var(--color-brand-primary); }

@media (max-width: 640px) {
  .float-toggle { width: 50px; height: 50px; }
  .float-toggle__ic { width: 23px; height: 23px; }
  .float-stack { bottom: 76px; }
}

/* Tooltip-бульбашка */
.float-bubble {
  position: absolute;
  right: 70px;
  bottom: 6px;
  width: 220px;
  background: #fff;
  color: var(--color-ink);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-small);
  opacity: 0;
  transform: translateX(12px);
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-standard),
              transform var(--dur-base) var(--ease-out);
}
.float-bubble.is-visible { opacity: 1; transform: translateX(0); pointer-events: auto; }
.float-bubble button { position: absolute; top: 4px; right: 6px; color: var(--color-ink-subtle); font-size: 16px; }

/* ===================== STICKY CTA (моб.) ===================== */
.sticky-cta {
  position: fixed;
  inset: auto 0 0 0;
  z-index: var(--z-float);
  display: none;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 16px rgba(11, 37, 69, 0.08);
  transform: translateY(100%);
  transition: transform var(--dur-base) var(--ease-out);
}
.sticky-cta.is-visible { transform: translateY(0); }
.sticky-cta a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
  font-weight: 600;
  font-size: var(--fs-small);
}
.sticky-cta a svg { width: 18px; height: 18px; }
.sticky-cta__call { color: var(--color-brand-primary); }
.sticky-cta__tg { background: var(--color-brand-accent); color: #fff; }
.sticky-cta__tg:hover { color: #fff; }
@media (max-width: 640px) {
  .sticky-cta { display: flex; }
}

/* ===================== COOKIE BANNER ===================== */
.cookie-banner {
  position: fixed;
  left: clamp(12px, 3vw, 24px);
  bottom: clamp(12px, 3vw, 24px);
  z-index: var(--z-toast);
  width: min(420px, calc(100vw - 24px));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  transform: translateY(20px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-standard),
              transform var(--dur-base) var(--ease-out),
              visibility var(--dur-base);
}
.cookie-banner.is-visible { opacity: 1; transform: translateY(0); visibility: visible; }
.cookie-banner h3 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.cookie-banner p { font-size: var(--fs-small); color: var(--color-ink-muted); margin-bottom: var(--space-4); }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.cookie-banner__actions .btn { flex: 1; }
@media (max-width: 640px) {
  .cookie-banner { bottom: 80px; }
}

/* ===================== CTA-БЛОК ===================== */
.cta-block {
  position: relative;
  overflow: hidden;
  background: var(--color-brand-primary);
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 6vw, 5rem);
  color: #fff;
  text-align: center;
}
.cta-block__glow {
  position: absolute;
  width: 480px; height: 480px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.4;
  pointer-events: none;
}
.cta-block__glow--1 { background: var(--color-brand-accent); top: -200px; left: -120px; }
.cta-block__glow--2 { background: var(--color-brand-primary-500); bottom: -240px; right: -120px; }
.cta-block > * { position: relative; }
.cta-block h2 { color: #fff; max-width: 660px; margin-inline: auto; }
.cta-block p {
  margin-top: var(--space-4);
  color: var(--color-brand-primary-200);
  font-size: var(--fs-body-l);
  max-width: 560px;
  margin-inline: auto;
}
.cta-block__actions {
  margin-top: var(--space-8);
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}
.cta-block__note {
  margin-top: var(--space-5);
  font-size: var(--fs-small);
  color: var(--color-brand-primary-200);
}