/* =========================================================================
   Макет: шапка, подвал, контейнеры, сетки
   ========================================================================= */

#root { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; }
.app-shell { display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh; }

.container {
  width: 100%;
  max-width: var(--layout-max);
  margin-inline: auto;
  padding-inline: var(--content-pad);
}
.container--wide { max-width: var(--layout-wide); }
.container--narrow { max-width: 760px; }

#main { flex: 1 0 auto; display: flex; flex-direction: column; }
.page { flex: 1 0 auto; padding-block: var(--sp-8) var(--sp-10); }
.page--flush { padding: 0; }

.section-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: var(--sp-7); }
.section-head__eyebrow {
  font-size: var(--fs-sm); font-weight: 700; letter-spacing: var(--tracking-wider);
  text-transform: uppercase; color: var(--c-primary);
}
.section-head h2 { font-size: var(--fs-3xl); }
.section-head p { color: var(--c-text-muted); max-width: 60ch; }

/* ------------------------------------------------------------------ Шапка */
.site-header {
  position: sticky; top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-3) var(--ease-soft), border-color var(--dur-3) var(--ease-soft), box-shadow var(--dur-3) var(--ease-soft);
}
.site-header.is-scrolled {
  background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border-bottom-color: var(--c-border);
  box-shadow: var(--shadow-sm);
}
.site-header__inner {
  width: 100%; max-width: var(--layout-wide);
  margin-inline: auto; padding-inline: var(--content-pad);
  display: flex; align-items: center; gap: var(--sp-5);
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; color: var(--c-text); }
.brand__mark {
  width: 38px; height: 38px; flex: none;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  background: linear-gradient(140deg, var(--c-primary-300), var(--c-primary-700));
  color: #fff; font-size: 20px;
  box-shadow: 0 4px 12px rgba(46,125,79,0.32), var(--shadow-inset);
  transition: transform var(--dur-3) var(--ease-spring);
}
.brand:hover .brand__mark { transform: rotate(-8deg) scale(1.05); }
.brand__name { font-family: var(--font-display); font-size: var(--fs-lg); line-height: 1; }
.brand__name small { display: block; font-family: var(--font-sans); font-size: 10px; font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--c-text-faint); margin-top: 3px; }

.site-nav { display: flex; align-items: center; gap: 4px; margin-left: var(--sp-3); }
.site-nav a {
  position: relative;
  padding: 8px 14px;
  font-size: var(--fs-base); font-weight: 500;
  color: var(--c-text-soft);
  border-radius: var(--r-full);
  transition: color var(--dur-2) var(--ease-soft), background var(--dur-2) var(--ease-soft);
}
.site-nav a:hover { color: var(--c-primary-700); background: var(--c-primary-tint); }
.site-nav a.is-active { color: var(--c-primary-700); }
.site-nav a.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--c-primary); border-radius: 2px;
  animation: navUnderline var(--dur-3) var(--ease-out-expo) both;
}
@keyframes navUnderline { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* Мини-поиск в шапке (на не-главных страницах) */
.header-search { position: relative; display: none; }
.header-search .input { width: 240px; padding-left: 2.4em; padding-block: 0.5em; border-radius: var(--r-full); background: var(--c-surface-2); }
.header-search .input:focus { background: var(--c-surface); width: 300px; }
.header-search .input-wrap__icon { left: 0.75em; width: 16px; height: 16px; }
@media (min-width: 900px) { .header-search.is-shown { display: block; } }

/* Меню пользователя */
.user-menu { position: relative; }
.user-menu__btn { display: inline-flex; align-items: center; gap: 8px; padding: 4px 4px 4px 12px; border-radius: var(--r-full); border: 1px solid var(--c-border); background: var(--c-surface); transition: all var(--dur-2) var(--ease-soft); }
.user-menu__btn:hover { border-color: var(--c-primary-200); box-shadow: var(--shadow-sm); }
.user-menu__name { font-size: var(--fs-sm); font-weight: 600; max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.menu-pop {
  position: absolute; right: 0; top: calc(100% + 10px);
  min-width: 240px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xl);
  padding: 8px;
  animation: menuPop var(--dur-3) var(--ease-out-expo) both;
  transform-origin: top right;
}
@keyframes menuPop { from { opacity: 0; transform: scale(0.94) translateY(-6px); } to { opacity: 1; transform: none; } }
.menu-pop__head { padding: 10px 12px; border-bottom: 1px solid var(--c-border); margin-bottom: 6px; }
.menu-item {
  display: flex; align-items: center; gap: 11px;
  width: 100%; padding: 9px 12px;
  font-size: var(--fs-base); color: var(--c-text-soft);
  border-radius: var(--r-sm); text-align: left;
  transition: background var(--dur-1) var(--ease-soft), color var(--dur-1) var(--ease-soft);
}
.menu-item:hover { background: var(--c-primary-tint); color: var(--c-primary-700); }
.menu-item .icon { width: 18px; height: 18px; color: var(--c-text-muted); }
.menu-item:hover .icon { color: var(--c-primary); }
.menu-item--danger:hover { background: var(--c-danger-soft); color: var(--c-danger); }
.menu-item--danger:hover .icon { color: var(--c-danger); }

/* Бургер */
.burger { display: none; }
@media (max-width: 860px) {
  .site-nav { display: none; }
  .burger { display: inline-grid; }
}

/* Мобильное меню */
.mobile-nav { display: flex; flex-direction: column; gap: 4px; padding: var(--sp-4); }
.mobile-nav a, .mobile-nav button {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-radius: var(--r-md);
  font-size: var(--fs-lg); font-weight: 500; color: var(--c-text-soft);
  text-align: left;
}
.mobile-nav a:hover, .mobile-nav button:hover { background: var(--c-primary-tint); color: var(--c-primary-700); }
.mobile-nav .icon { color: var(--c-text-muted); }

/* ------------------------------------------------------------------ Подвал */
.site-footer {
  flex-shrink: 0;
  margin-top: var(--sp-10);
  background: linear-gradient(180deg, transparent, var(--c-bg-deep));
  border-top: 1px solid var(--c-border);
}
.site-footer__inner {
  max-width: var(--layout-max);
  margin-inline: auto;
  padding: var(--sp-9) var(--content-pad) var(--sp-6);
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: var(--sp-7);
}
.footer-brand p { color: var(--c-text-muted); font-size: var(--fs-sm); margin-top: 14px; max-width: 34ch; }
.footer-col h4 { font-family: var(--font-sans); font-size: var(--fs-sm); font-weight: 700; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--c-text-faint); margin-bottom: 14px; }
.footer-col ul { display: flex; flex-direction: column; gap: 9px; }
.footer-col a { color: var(--c-text-soft); font-size: var(--fs-base); }
.footer-col a:hover { color: var(--c-primary); }
.footer-bottom {
  max-width: var(--layout-max); margin-inline: auto;
  padding: var(--sp-5) var(--content-pad);
  border-top: 1px solid var(--c-border);
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  font-size: var(--fs-sm); color: var(--c-text-muted);
}
.footer-bottom__legal { display: flex; flex-wrap: wrap; gap: 18px; }
@media (max-width: 760px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .footer-brand { grid-column: 1 / -1; }
}

/* ------------------------------------------------------------ Сетки-утилиты */
.grid { display: grid; gap: var(--sp-5); }
.flow { display: flex; flex-direction: column; gap: var(--sp-4); }
.row { display: flex; gap: var(--sp-3); align-items: center; }
.row--wrap { flex-wrap: wrap; }
.row--between { justify-content: space-between; }
.row--end { justify-content: flex-end; }
.spacer { flex: 1; }
.mt-auto { margin-top: auto; }

@media print {
  .site-header, .site-footer, .tree-controls, .no-print { display: none !important; }
}