/* ============================================================
   ХОЧУ ПРИГЛАСИТЬ — обвязка: шапка, подвал, плавающая связь, модалки
   ============================================================ */

/* ---------- Фоновая атмосфера: свеча, которая очень медленно дышит ---------- */
.atmos {
  position: fixed; inset: 0; z-index: var(--z-bg);
  pointer-events: none; overflow: hidden;
}
.atmos__glow {
  position: absolute;
  width: 62vmax; height: 62vmax;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  will-change: transform;
}
.atmos__glow--a {
  top: -22vmax; left: 48%;
  background: radial-gradient(circle, rgba(154,123,46,.16), transparent 66%);
  animation: drift-a 34s ease-in-out infinite alternate;
}
.atmos__glow--b {
  bottom: -26vmax; left: -14vmax;
  background: radial-gradient(circle, rgba(94,138,80,.13), transparent 66%);
  animation: drift-b 46s ease-in-out infinite alternate;
}
.atmos__grain {
  position: absolute; inset: -50%;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
@keyframes drift-a { to { transform: translate3d(-14vmax, 9vmax, 0) scale(1.14); } }
@keyframes drift-b { to { transform: translate3d(12vmax, -7vmax, 0) scale(1.08); } }

.page { position: relative; z-index: var(--z-body); }

/* ---------- Шапка ---------- */
.masthead {
  position: sticky; top: 0; z-index: var(--z-sticky);
  transition: background-color var(--t-mid) linear, border-color var(--t-mid) linear;
  border-bottom: 1px solid transparent;
}
.masthead.is-stuck {
  background: rgba(247, 243, 234, 0.86);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-bottom-color: var(--hairline-2);
}
.masthead__inner {
  display: flex; align-items: center; gap: var(--s-5);
  min-height: 72px;
}

/* Логотип: печать + слово. Кольцо вокруг печати — индикатор прокрутки. */
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand__seal {
  position: relative; width: 34px; height: 34px; flex: none;
  display: grid; place-items: center;
}
.brand__seal::before {
  content: "";
  position: absolute; inset: -5px;
  border-radius: 50%;
  background: conic-gradient(var(--brass) calc(var(--progress, 0) * 1turn), rgba(22,33,31,.16) 0);
  -webkit-mask: radial-gradient(circle, transparent 62%, #000 63%);
  mask: radial-gradient(circle, transparent 62%, #000 63%);
  transition: opacity var(--t-mid) linear;
}
.brand__word {
  display: grid; gap: 1px; line-height: 1;
}
/* Знак: строчная латиница, «4u» — сургучом, как печать рядом.
   Верхний регистр здесь не годится: «INVITE4U» читается как аббревиатура. */
.brand__name {
  font-family: var(--face-display); font-weight: 300; font-size: 1.36rem;
  letter-spacing: -.035em; text-transform: lowercase;
  display: inline-flex; align-items: baseline;
}
.brand__name b {
  font-weight: 400; color: var(--wax);
  margin-left: .02em;
  transition: color var(--t-fast) linear;
}
.brand:hover .brand__name b { color: var(--wax-hi); }
.brand__sub {
  font-size: 0.58rem; letter-spacing: .24em; text-transform: uppercase; color: var(--ink-faint);
}

.nav { display: flex; align-items: center; gap: 2px; margin-inline: auto; }
.nav__link {
  position: relative;
  padding: 9px 15px;
  font-size: 0.9rem;
  color: rgba(22,33,31,.72);
  border-radius: var(--radius-ui);
  transition: color var(--t-fast) linear;
}
.nav__link:hover { color: var(--ink); }
.nav__link::before {
  content: "";
  position: absolute; left: 50%; bottom: 2px;
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--brass);
  transform: translate(-50%, 4px) scale(0);
  transition: transform var(--t-mid) var(--ease-snap);
}
.nav__link.is-active { color: var(--ink); }
.nav__link.is-active::before { transform: translate(-50%, 0) scale(1); }

.masthead__actions { display: flex; align-items: center; gap: var(--s-3); flex: 0 0 auto; }

/* Корзина */
.cart-btn {
  position: relative;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--hairline); border-radius: 50%;
  background: transparent; cursor: pointer;
  transition: border-color var(--t-fast) linear, transform var(--t-fast) var(--ease-paper);
}
.cart-btn:hover { border-color: var(--ink-soft); transform: translateY(-1px); }
.cart-btn__count {
  position: absolute; top: -4px; right: -4px;
  min-width: 19px; height: 19px; padding: 0 5px;
  display: grid; place-items: center;
  background: var(--wax); color: #FFF6F2;
  border-radius: 999px;
  font-size: 0.66rem; font-weight: 600; line-height: 1;
  transform: scale(0);
  transition: transform var(--t-mid) var(--ease-snap);
}
.cart-btn.has-items .cart-btn__count { transform: scale(1); }

/* Бургер */
.burger {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--hairline); border-radius: 50%;
  background: transparent; cursor: pointer;
  position: relative;
}
.burger span {
  position: absolute; left: 13px; width: 18px; height: 1px;
  background: var(--ink);
  transition: transform var(--t-mid) var(--ease-paper), opacity var(--t-fast) linear;
}
.burger span:nth-child(1) { top: 17px; }
.burger span:nth-child(2) { top: 22px; }
.burger span:nth-child(3) { top: 27px; }
.burger.is-open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Мобильное меню */
.mobile-nav {
  position: fixed; inset: 72px 0 0; z-index: var(--z-sticky);
  background: rgba(247, 243, 234, .98);
  backdrop-filter: blur(20px);
  padding: var(--s-7) var(--gutter);
  display: grid; align-content: start; gap: var(--s-2);
  transform: translateY(-14px); opacity: 0; pointer-events: none;
  transition: opacity var(--t-mid) var(--ease-paper), transform var(--t-mid) var(--ease-paper);
}
.mobile-nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
.mobile-nav a {
  font-family: var(--face-display); font-weight: 300;
  font-size: 1.6rem; letter-spacing: -.02em;
  padding: 14px 0; border-bottom: 1px solid var(--hairline-2);
}
.mobile-nav .btn { margin-top: var(--s-5); }

/* ---------- Плавающая обратная связь ---------- */
.hail {
  position: fixed; right: clamp(16px, 3vw, 32px); bottom: clamp(16px, 3vw, 32px);
  z-index: var(--z-float);
  display: grid; justify-items: end; gap: var(--s-3);
}
.hail__toggle {
  width: 58px; height: 58px; border-radius: 50%;
  border: 1px solid rgba(200, 70, 58, .5);
  background: var(--wax);
  display: grid; place-items: center;
  cursor: pointer;
  box-shadow: 0 12px 34px rgba(22,33,31,0.18), inset 0 1px 0 rgba(255,255,255,.2);
  transform: scale(0) translateY(12px);
  transition: transform var(--t-mid) var(--ease-snap), background-color var(--t-fast) linear;
}
.hail.is-visible .hail__toggle { transform: scale(1) translateY(0); }
.hail__toggle:hover { background: var(--wax-hi); }
.hail__toggle svg { width: 24px; height: 24px; }
/* Мягкое «сердцебиение» — раз в 6 секунд, чтобы напомнить о себе */
.hail__pulse {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid var(--wax-hi);
  animation: hail-pulse 5s var(--ease-paper) 3;
}
@keyframes hail-pulse {
  0%, 76% { transform: scale(1); opacity: .8; }
  90%     { transform: scale(1.5); opacity: 0; }
  100%    { transform: scale(1.5); opacity: 0; }
}
.hail__panel {
  width: min(340px, calc(100vw - 32px));
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: var(--s-5);
  box-shadow: 0 24px 60px rgba(22,33,31,0.18);
  display: grid; gap: var(--s-4);
  transform-origin: bottom right;
  transform: scale(.9) translateY(10px); opacity: 0; pointer-events: none;
  transition: opacity var(--t-mid) var(--ease-paper), transform var(--t-mid) var(--ease-paper);
}
.hail.is-open .hail__panel { opacity: 1; transform: none; pointer-events: auto; }
.hail__panel .h3 { font-size: 1.1rem; }

/* ---------- Подвал ---------- */
.footer {
  background: var(--paper-deep);
  border-top: 1px solid var(--hairline-2);
  padding-block: var(--s-9) var(--s-6);
  margin-top: var(--s-8);
}
.footer__grid {
  display: grid; gap: var(--s-8);
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(140px, 1fr));
}
.footer__mark { display: grid; gap: var(--s-4); align-content: start; }
.footer__col { display: grid; gap: var(--s-3); align-content: start; }
.footer__col h4 {
  font-size: var(--fs-micro); letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 500; margin-bottom: var(--s-1);
}
.footer__col a, .footer__col span { font-size: var(--fs-small); color: rgba(22,33,31,.72); }
.footer__col a:hover { color: var(--ink); }
.footer__base {
  display: flex; flex-wrap: wrap; gap: var(--s-4) var(--s-6);
  justify-content: space-between; align-items: center;
  margin-top: var(--s-8); padding-top: var(--s-5);
  border-top: 1px solid var(--hairline-2);
  font-size: 0.82rem; color: var(--ink-faint);
}

/* ---------- Модальное окно ---------- */
.modal {
  position: fixed; inset: 0; z-index: var(--z-modal);
  display: grid; place-items: center;
  padding: var(--s-4);
  background: rgba(22, 33, 31, .38);
  backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-mid) linear;
}
.modal.is-open { opacity: 1; pointer-events: auto; }
.modal__box {
  width: min(560px, 100%);
  max-height: 88vh; overflow-y: auto;
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  border-radius: 16px;
  padding: clamp(24px, 4vw, 40px);
  transform: translateY(16px) scale(.98);
  transition: transform var(--t-mid) var(--ease-paper);
}
.modal.is-open .modal__box { transform: none; }
.modal__close {
  position: absolute; top: 18px; right: 18px;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--hairline); background: transparent; cursor: pointer;
  display: grid; place-items: center;
}
.modal__close:hover { border-color: var(--ink-soft); }

/* ---------- Готовые ссылки: окно публикации и страница оплаты ---------- */
.done { display: grid; gap: var(--s-4); }
.done__link {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--hairline); border-radius: 10px;
  padding: 12px 14px; background: var(--paper-2);
  font-size: .88rem; word-break: break-all;
}
.done__link span { flex: 1; color: var(--brass); }
.done__share { display: flex; flex-wrap: wrap; gap: 8px; }
.done__qr {
  width: 148px; height: 148px; margin-inline: auto;
  background: var(--paper-2); border-radius: 8px; padding: 8px;
  border: 1px solid var(--hairline-2);
}

/* ---------- Уведомление ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: var(--z-modal);
  transform: translate(-50%, 22px); opacity: 0; pointer-events: none;
  background: var(--ink); color: var(--paper-2);
  padding: 12px 22px; border-radius: var(--radius-ui);
  font-size: var(--fs-small); font-weight: 500;
  box-shadow: 0 16px 40px rgba(22,33,31,0.17);
  transition: opacity var(--t-mid) linear, transform var(--t-mid) var(--ease-snap);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 980px) {
  .nav { display: none; }
  .burger { display: block; }
  .masthead__inner { min-height: 72px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; gap: var(--s-6); }
}

.modal[hidden] { display: none; }

@media (max-width: 620px) {
  .masthead__actions .btn { display: none; }
  .brand__sub { display: none; }
}