:root {
  --tg-live-h: 100dvh;
  --tg-stable-h: 100dvh;
  --tg-safe-top: env(safe-area-inset-top);
  --tg-safe-right: env(safe-area-inset-right);
  --tg-safe-bottom: env(safe-area-inset-bottom);
  --tg-safe-left: env(safe-area-inset-left);
  --tg-content-safe-top: var(--tg-safe-top);
  --tg-content-safe-right: var(--tg-safe-right);
  --tg-content-safe-bottom: var(--tg-safe-bottom);
  --tg-content-safe-left: var(--tg-safe-left);
  --app-live-h: var(--tg-live-h);
  --app-frame-h: var(--tg-stable-h);
  --app-content-top: var(--tg-content-safe-top);
  --app-content-right: var(--tg-content-safe-right);
  --app-content-bottom: var(--tg-content-safe-bottom);
  --app-content-left: var(--tg-content-safe-left);
  --app-bleed-top: var(--tg-safe-top);
  --app-bleed-right: var(--tg-safe-right);
  --app-bleed-bottom: var(--tg-safe-bottom);
  --app-bleed-left: var(--tg-safe-left);
  --app-fullscreen-offset-top: 0px;
  --app-fullscreen-shell-gap: 0px;
  --app-fullscreen-content-gap: 0px;
  --app-page-x: 16px;
  --app-page-top-gap: 16px;
  --app-page-bottom-gap: 40px;
  --app-height: var(--app-live-h);
  --app-stable-height: var(--app-frame-h);
  --safe-top: var(--app-content-top);
  --safe-right: var(--app-content-right);
  --safe-bottom: var(--app-content-bottom);
  --safe-left: var(--app-content-left);
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: #ffffff;
  color: #111111;
  min-height: var(--app-frame-h, 100dvh);
}

body[data-viewport-mode="fullscreen"] {
  --app-fullscreen-shell-gap: 18px;
  /* Extra breathing room below the sticky topbar in fullscreen, so the first
     content block doesn't feel cramped against Telegram's native UI + our header. */
  --app-fullscreen-content-gap: 28px;
}

.container {
  max-width: 520px;
  margin: 0 auto;
  padding-top: max(
    calc(var(--app-page-top-gap) + var(--app-fullscreen-shell-gap)),
    calc(var(--app-content-top, env(safe-area-inset-top)) + var(--app-page-top-gap) + var(--app-fullscreen-shell-gap))
  );
  padding-right: calc(var(--app-content-right, env(safe-area-inset-right)) + var(--app-page-x));
  padding-bottom: max(var(--app-page-bottom-gap), calc(var(--app-content-bottom, env(safe-area-inset-bottom)) + var(--app-page-bottom-gap)));
  padding-left: calc(var(--app-content-left, env(safe-area-inset-left)) + var(--app-page-x));
  min-height: var(--app-frame-h, 100dvh);
}

a {
  color: #86b6ff;
  text-decoration: none;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.topbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
  flex-shrink: 0;
}

.topbar--spread {
  justify-content: space-between;
}

.topbar--sticky {
  position: sticky;
  top: max(
    calc(10px + var(--app-fullscreen-shell-gap)),
    calc(var(--app-content-top, env(safe-area-inset-top)) + 10px + var(--app-fullscreen-shell-gap))
  );
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  padding: 10px 16px 10px 16px;
  margin: 0 0 calc(18px + var(--app-fullscreen-content-gap));
  border-radius: 22px;
  border: 1px solid rgba(226, 232, 240, 0.82);
  backdrop-filter: blur(18px) saturate(1.05);
  -webkit-backdrop-filter: blur(18px) saturate(1.05);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.03);
  transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

/* In Telegram fullscreen mode, the native close/more buttons sit at the top
   of the viewport and the layout is much more "exposed". Make the sticky topbar
   more opaque so content that scrolls behind it doesn't bleed through the blur
   and clash visually with Telegram's native UI. Also give the content below the
   topbar more breathing room at rest. */
body[data-viewport-mode="fullscreen"] .topbar--sticky {
  background: rgba(255, 255, 255, 0.97);
  border-color: rgba(226, 232, 240, 0.95);
  backdrop-filter: blur(24px) saturate(1.1);
  -webkit-backdrop-filter: blur(24px) saturate(1.1);
}

.topbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(226, 232, 240, 0.96);
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
}

body[data-viewport-mode="fullscreen"] .topbar--sticky.scrolled {
  background: rgba(255, 255, 255, 1);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12), 0 2px 8px rgba(15, 23, 42, 0.06);
}

.back-btn,
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #f1f5f9;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #000000;
  text-decoration: none;
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.topbar--sticky .icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: rgba(241, 245, 249, 0.72);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}

.topbar--sticky .topbar-actions {
  gap: 8px;
  margin-left: 8px;
  margin-right: 0;
  padding-right: 2px;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0 2px 0 0;
}

.topbar--sticky .topbar-actions .icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(226, 232, 240, 0.96);
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.04);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.topbar--sticky .topbar-actions .icon-btn:active {
  background: rgba(248, 250, 252, 0.98);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
  transform: translateY(1px);
}

.topbar--sticky .icon-btn svg {
  width: 19px;
  height: 19px;
}

.topbar--sticky .topbar-actions .icon-btn svg {
  width: 18px;
  height: 18px;
}

.topbar--sticky .topbar-actions .icon-btn.cart svg {
  width: 19px;
  height: 19px;
}

.topbar .back-btn {
  margin-right: 0;
}

.back-btn--placeholder {
  visibility: hidden;
  pointer-events: none;
}

.icon-btn.cart,
.icon-btn--cart {
  position: relative;
}

.badge,
.icon-btn .badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background: #ff8c3a;
  color: #111111;
  font-weight: 700;
  font-size: 10.5px;
  padding: 1px 5px;
  border-radius: 999px;
  min-width: 16px;
  text-align: center;
  line-height: 1.4;
}

.topbar--sticky .topbar-actions .icon-btn .badge {
  top: -6px;
  right: -6px;
  font-size: 10px;
  padding: 1px 4.5px;
  min-width: 15px;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.9);
}

.search {
  flex: 1;
  position: relative;
  min-width: 0;
}

.search input {
  width: 100%;
  height: 40px;
  border: none;
  border-radius: 12px;
  background: #f1f5f9;
  color: #111111;
  padding: 0 40px 0 42px;
  font-size: 16px;
  outline: none;
}

.search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.8;
}

@media (max-width: 520px) {
  :root {
    --app-page-x: 12px;
    --app-page-top-gap: 12px;
    --app-page-bottom-gap: 32px;
  }

  .container {
    padding-top: max(
      calc(var(--app-page-top-gap) + var(--app-fullscreen-shell-gap)),
      calc(var(--app-content-top, env(safe-area-inset-top)) + var(--app-page-top-gap) + var(--app-fullscreen-shell-gap))
    );
    padding-right: calc(var(--app-content-right, env(safe-area-inset-right)) + var(--app-page-x));
    padding-bottom: max(var(--app-page-bottom-gap), calc(var(--app-content-bottom, env(safe-area-inset-bottom)) + var(--app-page-bottom-gap)));
    padding-left: calc(var(--app-content-left, env(safe-area-inset-left)) + var(--app-page-x));
  }

  .topbar {
    gap: 8px;
    margin-bottom: 12px;
  }

  .topbar--sticky {
    top: max(
      calc(8px + var(--app-fullscreen-shell-gap)),
      calc(var(--app-content-top, env(safe-area-inset-top)) + 8px + var(--app-fullscreen-shell-gap))
    );
    margin-bottom: calc(16px + var(--app-fullscreen-content-gap));
    padding: 8px 12px 8px 12px;
    border-radius: 20px;
  }

  .topbar .back-btn,
  .topbar .icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .topbar--sticky .icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 9px;
  }

  .topbar--sticky .topbar-actions {
    gap: 6px;
    margin-left: 6px;
    margin-right: 0;
    padding-right: 1px;
  }

  .topbar--sticky .topbar-actions .icon-btn {
    width: 31px;
    height: 31px;
    border-radius: 10px;
  }

  .topbar--sticky .icon-btn svg {
    width: 17px;
    height: 17px;
  }

  .topbar--sticky .topbar-actions .icon-btn svg {
    width: 17px;
    height: 17px;
  }

  .topbar--sticky .topbar-actions .icon-btn.cart svg {
    width: 18px;
    height: 18px;
  }

  .topbar--sticky .topbar-actions .icon-btn .badge {
    top: -5px;
    right: -5px;
    font-size: 9.5px;
    padding: 0.5px 4px;
    min-width: 14px;
  }

  .topbar .search input {
    height: 36px;
    font-size: 16px;
    padding: 0 36px 0 38px;
    border-radius: 10px;
  }

  .topbar .search svg {
    left: 10px;
    width: 18px;
    height: 18px;
  }
}