/* ===========================================================
   ШАПКА / НАВИГАЦИЯ
   =========================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.logo__mark {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 0.6rem + 1vw, 1.8rem);
}

.nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: clamp(0.9rem, 0.6rem + 1vw, 1.7rem);
}

.nav__link {
  position: relative;
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding-block: 0.3rem;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  transition: right 0.35s var(--ease-wipe);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  right: 0;
}

.nav__link[aria-current="page"] {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-bg-raised);
  border-radius: var(--radius-s);
  width: 42px;
  height: 38px;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 780px) {
  .nav__toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav__list {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    background: var(--color-bg-raised);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem clamp(1.25rem, 1rem + 2vw, 2.5rem) 1.4rem;
    gap: 0.9rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav[data-open="true"] .nav__list {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav__cta.btn { display: none; }
}

/* ===========================================================
   КНОПКИ — сигнатурный hover: линия чистоты проходит по кнопке
   =========================================================== */

.btn {
  --btn-fg: #F4F8FA;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.85em 1.6em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  isolation: isolate;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-2));
  color: var(--btn-fg);
  box-shadow: var(--shadow-soft);
}

.btn--ghost {
  background: rgba(20, 26, 30, 0.32);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-color: rgba(255, 255, 255, 0.55);
  color: #FFFFFF;
}

/* линия чистоты: диагональный блик, который "стирает" кнопку при наведении */
.btn::before {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: linear-gradient(
    100deg,
    transparent 42%,
    rgba(255, 255, 255, 0.55) 48%,
    rgba(255, 255, 255, 0.9) 50%,
    rgba(255, 255, 255, 0.55) 52%,
    transparent 58%
  );
  transform: translateX(-130%) rotate(2deg);
  transition: transform 0.6s var(--ease-wipe);
  z-index: 1;
  pointer-events: none;
  mix-blend-mode: overlay;
}

.btn--ghost::before {
  mix-blend-mode: normal;
  background: linear-gradient(
    100deg,
    transparent 42%,
    color-mix(in srgb, var(--color-accent-2) 35%, transparent) 50%,
    transparent 58%
  );
}

.btn:hover::before,
.btn:focus-visible::before {
  transform: translateX(30%) rotate(2deg);
}

.btn span { position: relative; z-index: 2; }

/* ===========================================================
   СЕКЦИИ И ДИАГОНАЛЬНЫЕ РАЗДЕЛИТЕЛИ ("линия чистоты")
   =========================================================== */

.section {
  position: relative;
  padding-block: var(--gap-section);
}

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

/* Диагональный разделитель между секциями */
.divider {
  position: relative;
  height: clamp(64px, 8vw, 120px);
  overflow: hidden;
}

.divider__line {
  position: absolute;
  top: 50%;
  left: -10%;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent-2), var(--color-accent), transparent);
  transform: rotate(calc(-1 * var(--diag-skew)));
  transition: width 1.1s var(--ease-wipe);
  box-shadow: 0 0 18px 0 color-mix(in srgb, var(--color-accent-2) 60%, transparent);
}

.divider.in-view .divider__line {
  width: 120%;
}

@media (prefers-reduced-motion: reduce) {
  .divider__line { width: 120% !important; transition: none !important; }
}

/* Реявил контента при появлении секции — со смыслом: подчёркивает границу, а не украшательство */
.reveal {
  clip-path: polygon(0 0, 0 0, 0 100%, 0 100%);
  transition: clip-path 0.9s var(--ease-wipe);
}

.reveal.in-view {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%) !important; transition: none !important; }
}

/* ===========================================================
   ПОДВАЛ
   =========================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 3rem 2.2rem;
  background: var(--color-bg-raised);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2.4rem;
}

@media (max-width: 720px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

.site-footer h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.9em;
}

.site-footer ul.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.site-footer ul.footer-nav a {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 0.5em 1.1em;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  background: var(--color-bg);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.site-footer ul.footer-nav a:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #F4F8FA;
}

.site-footer ul:not(.footer-nav) { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5em; }
.site-footer ul:not(.footer-nav) a { color: var(--color-text); text-decoration: none; }
.site-footer ul:not(.footer-nav) a:hover { color: var(--color-accent); }

.site-footer__bottom {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.5rem;
  justify-content: space-between;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* ===========================================================
   ПЛАВАЮЩИЙ ВИДЖЕТ ЗАЯВКИ
   =========================================================== */

.widget-btn {
  position: fixed;
  right: clamp(1rem, 0.7rem + 1vw, 1.8rem);
  bottom: clamp(1rem, 0.7rem + 1vw, 1.8rem);
  z-index: 60;
  border: none;
  border-radius: 100px;
  padding: 0.9em 1.3em 0.9em 1.1em;
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-2));
  color: #F4F8FA;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  isolation: isolate;
}

.widget-btn::before {
  content: "";
  position: absolute;
  inset: -60% -30%;
  background: linear-gradient(100deg, transparent 42%, rgba(255,255,255,.6) 50%, transparent 58%);
  transform: translateX(-140%);
  transition: transform 0.7s var(--ease-wipe);
}

.widget-btn:hover::before { transform: translateX(40%); }
.widget-btn span, .widget-btn svg { position: relative; z-index: 1; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--color-text) 45%, transparent);
  backdrop-filter: blur(3px);
  z-index: 70;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
}

.modal-backdrop[data-open="true"] { display: flex; }

.modal {
  position: relative;
  width: min(480px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  padding: clamp(1.6rem, 1.3rem + 1vw, 2.4rem);
  box-shadow: var(--shadow-card);
}

.modal__close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

/* ===========================================================
   БЕЙДЖИ / ТЕГИ
   =========================================================== */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 0.4em 0.9em;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  background: var(--color-bg-raised);
}

.tag--dot::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent-2);
}