/* МелМК — layout: шапка, hero, навбар, тулбар */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  max-width: 1180px;
  margin: 0 auto;
  position: relative;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-h);
  padding: var(--space-3) var(--space-3);
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 8px 28px rgb(79 70 229 / 6%);
  overflow: hidden;
}

/* fallback без backdrop-filter */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .app-header,
  .bottom-nav,
  .modal,
  .toast {
    background: var(--bg-elev);
  }
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.brand__name {
  font-size: clamp(1.15rem, 4vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--hero-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand__sub {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.main {
  flex: 1;
  padding: var(--space-3);
  padding-bottom: calc(var(--nav-h) + var(--safe-bottom) + var(--space-6));
  overflow-anchor: none;
}

/* Нижняя навигация — glass + safe-area */
.bottom-nav {
  position: fixed;
  left: max(12px, env(safe-area-inset-left, 0px));
  right: max(12px, env(safe-area-inset-right, 0px));
  bottom: calc(10px + var(--safe-bottom));
  z-index: 60;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  min-height: var(--nav-h);
  padding: 6px;
  padding-bottom: 6px;
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(1.25);
  -webkit-backdrop-filter: blur(20px) saturate(1.25);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  box-shadow: var(--shadow-md);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: calc(var(--nav-h) - 12px);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: color var(--transition), transform 140ms ease;
  border-radius: 20px;
  position: relative;
  z-index: 1;
}

.nav-item svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition);
}

.nav-item[aria-current="page"],
.nav-item.is-active {
  color: var(--accent);
}

.nav-item[aria-current="page"] svg,
.nav-item.is-active svg {
  transform: translateY(-1px) scale(1.06);
}

.nav-item:active {
  transform: scale(0.96);
}

.nav-item:hover {
  color: var(--text);
}

/* Баннеры */
.update-banner,
.install-banner,
.demo-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-3);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--accent-2) 12%, var(--bg-elev)));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  box-shadow: var(--shadow-sm);
}

.update-banner {
  background: linear-gradient(135deg, var(--changed), color-mix(in srgb, var(--accent-3) 12%, var(--bg-elev)));
}

.banner__text {
  flex: 1;
  min-width: 140px;
  font-size: 0.9375rem;
  font-weight: 600;
}

/* Старый тулбар с выбором недели — скрыт (логика удалена) */
.toolbar {
  display: none !important;
}

.toolbar .select-group {
  flex: 1;
  min-width: 120px;
}

.day-switcher {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  margin-bottom: var(--space-3);
  padding: 4px 2px 8px;
  overscroll-behavior-x: contain;
}

.day-switcher::-webkit-scrollbar {
  display: none;
}

.day-chip {
  flex: 0 0 auto;
  min-height: var(--touch);
  min-width: 52px;
  padding: 0 var(--space-4);
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1.5px solid var(--border);
  font-weight: 700;
  font-size: 0.875rem;
  transition: transform 140ms ease, background var(--transition), color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}

.day-chip:active {
  transform: scale(0.96);
}

.day-chip.is-active {
  background: var(--hero-grad);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 35%, transparent);
}

.day-chip.is-today:not(.is-active) {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.view-toggle {
  display: inline-flex;
  background: var(--bg-muted);
  border-radius: 999px;
  padding: 4px;
  border: 1px solid var(--border);
}

.view-toggle__btn {
  min-height: calc(var(--touch) - 8px);
  padding: 0 var(--space-4);
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.view-toggle__btn.is-active {
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .app-header {
    padding-inline: var(--space-5);
    margin: 12px 16px 0;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
  }
  .main {
    padding: var(--space-5);
    padding-bottom: calc(var(--nav-h) + var(--safe-bottom) + var(--space-6));
  }
  .bottom-nav {
    max-width: 560px;
    left: 50%;
    right: auto;
    width: min(560px, calc(100% - 32px));
    transform: translateX(-50%);
    bottom: calc(14px + var(--safe-bottom));
  }
}

@media (max-width: 360px) {
  .nav-item span {
    font-size: 0.55rem;
  }
  .brand__name {
    font-size: 1.05rem;
  }
}

/* PWA standalone */
@media (display-mode: standalone) {
  .bottom-nav {
    bottom: calc(8px + var(--safe-bottom));
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .app-header {
    min-height: 48px;
    padding-block: 6px;
  }
  .bottom-nav {
    min-height: 56px;
    border-radius: 20px;
  }
  .nav-item {
    min-height: 48px;
    font-size: 0.55rem;
  }
}