/* SITE-PUBLIC-HARDENING-01 — non-visual hardening over approved CHAT-01 */
.chat-home-footer {
  content-visibility: auto;
  contain-intrinsic-size: auto 220px;
}

.chat-state-banner {
  width: min(820px, 100%);
  margin: 12px auto 0;
  padding: 11px 14px;
  border: 1px solid var(--brand-line);
  border-radius: 14px;
  background: #f8f9fc;
  color: #3f4754;
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}

.chat-state-banner[hidden] {
  display: none !important;
}

@supports (height: 100dvh) {
  .chat-home-page,
  .chat-home-shell {
    min-height: 100dvh;
  }

  .chat-hero {
    min-height: calc(100dvh - 82px);
  }
}

@supports (padding: max(0px)) {
  .chat-home-shell {
    padding-left: max(28px, env(safe-area-inset-left));
    padding-right: max(28px, env(safe-area-inset-right));
  }

  .chat-topbar {
    padding-top: env(safe-area-inset-top);
  }

  .chat-hero {
    padding-bottom: max(20px, env(safe-area-inset-bottom));
  }
}

@media (max-width: 760px) {
  @supports (height: 100dvh) {
    .chat-hero {
      min-height: calc(100dvh - 68px);
    }
  }

  @supports (padding: max(0px)) {
    .chat-home-shell {
      padding-left: max(18px, env(safe-area-inset-left));
      padding-right: max(18px, env(safe-area-inset-right));
    }

    .chat-hero {
      padding-bottom: max(14px, env(safe-area-inset-bottom));
    }
  }
}

@media (max-width: 390px) {
  @supports (padding: max(0px)) {
    .chat-home-shell {
      padding-left: max(14px, env(safe-area-inset-left));
      padding-right: max(14px, env(safe-area-inset-right));
    }
  }
}

@media (max-width: 760px) and (max-height: 740px) {
  .chat-character-wrap {
    width: 132px;
    height: 174px;
    margin-top: calc(clamp(24px, 7vh, 52px) + 28px);
    margin-bottom: 12px;
  }

  .chat-character-logo {
    height: 174px;
  }

  .chat-input {
    min-height: 64px;
  }
}

@media (max-width: 900px) and (max-height: 560px) and (orientation: landscape) {
  .chat-topbar {
    min-height: 56px;
  }

  .chat-hero {
    min-height: calc(100vh - 56px);
    padding-top: 10px;
  }

  .chat-character-wrap {
    width: 92px;
    height: 121px;
    margin-top: 6px;
    margin-bottom: 8px;
  }

  .chat-character-logo {
    height: 121px;
  }

  .chat-input {
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .account-action,
  .skip-link {
    transition: none !important;
  }

  .account-action:hover {
    transform: none;
  }
}

@media (prefers-contrast: more) {
  .chat-composer,
  .account-login,
  .composer-button,
  .chat-state-banner {
    border-color: currentColor;
  }

  .chat-input::placeholder {
    color: #555d69;
  }
}

@media (forced-colors: active) {
  .account-action,
  .chat-composer,
  .composer-button,
  .chat-state-banner {
    border: 1px solid CanvasText;
  }

  .account-signup,
  .send-button {
    background: ButtonFace;
    color: ButtonText;
  }
}

/* CONTROL TOWER ADDENDUM — Desktop brand belongs to the navigation hierarchy.
   The left edge matches nav-item text: sidebar padding 12px + this 10px margin. */
.sidebar-brand {
  margin: 4px 10px 22px;
  font-size: 22px;
}

@media (min-width: 901px) {
  .topbar-left {
    display: none;
  }

  .chat-topbar {
    justify-content: flex-end;
  }
}

/* User visual refinement — compact composer without changing its bottom-docked position. */
.chat-composer {
  width: min(960px, calc(100% - 12px));
  padding: 10px 10px 8px 16px;
  border-radius: 22px;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: end;
  column-gap: 0;
  row-gap: 4px;
}

/* SITE-COMPOSER-AUTO-GROW-01 — one visible line through about twelve lines.
   `lh` follows the prompt's actual line-height so font changes keep the cap honest. */
.chat-input {
  grid-column: 1 / -1;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: calc(1lh + 14px);
  max-height: calc(12lh + 14px);
  padding: 7px 4px;
  overflow-y: hidden;
  overscroll-behavior: contain;
}

/* SITE-COMPOSER-HORIZONTAL-FIT-01 — controls no longer reserve a permanent
   second column beside the text. They occupy their own bottom row. */
.composer-actions {
  grid-column: 1 / -1;
  justify-self: end;
  align-self: end;
  justify-content: flex-end;
  padding-bottom: 0;
}

@media (max-width: 760px) {
  .chat-composer {
    width: min(100%, 350px);
    padding: 9px 9px 8px 13px;
    border-radius: 20px;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: end;
    column-gap: 0;
    row-gap: 4px;
  }

  .chat-input {
    grid-column: 1 / -1;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    min-height: calc(1lh + 12px);
    max-height: min(calc(12lh + 12px), 40vh);
    padding: 6px 2px;
  }

  @supports (height: 100dvh) {
    .chat-input {
      max-height: min(calc(12lh + 12px), 40dvh);
    }
  }

  .composer-actions {
    grid-column: 1 / -1;
    justify-self: end;
    align-self: end;
    justify-content: flex-end;
    padding-bottom: 0;
  }
}


/* SITE-MOBILE-HOME-UX-STABILITY-01 — compact only the actually visible mobile
   viewport while a virtual keyboard is open. Desktop and normal mobile remain
   on their existing layout; the footer is removed from the keyboard viewport. */
@media (max-width: 760px) {
  body.mobile-keyboard-open {
    height: var(--lotbi-mobile-viewport-height, 100dvh);
    min-height: var(--lotbi-mobile-viewport-height, 100dvh);
    overflow: hidden;
    overscroll-behavior-y: none;
  }

  body.mobile-keyboard-open .chat-app-shell,
  body.mobile-keyboard-open .chat-home-shell {
    height: var(--lotbi-mobile-viewport-height, 100dvh);
    min-height: 0;
    max-height: var(--lotbi-mobile-viewport-height, 100dvh);
  }

  body.mobile-keyboard-open .chat-home-shell {
    overflow: hidden;
  }

  body.mobile-keyboard-open .chat-topbar {
    min-height: 56px;
    flex: 0 0 56px;
  }

  body.mobile-keyboard-open .chat-hero {
    flex: 1 1 auto;
    min-height: 0;
    height: auto;
    padding-top: 4px;
    padding-bottom: max(6px, env(safe-area-inset-bottom));
    overflow: hidden;
  }

  body.mobile-keyboard-open .home-avatar-anchor {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  body.mobile-keyboard-open .home-avatar-anchor .chat-character-wrap {
    width: clamp(82px, 22dvh, 116px);
    height: clamp(108px, 29dvh, 152px);
    margin: 0 0 4px;
  }

  body.mobile-keyboard-open .home-avatar-anchor .chat-character-logo {
    height: 100%;
  }

  body.mobile-keyboard-open .conversation-thread {
    min-height: 0;
    max-height: none;
  }

  body.mobile-keyboard-open.conversation-active .conversation-thread {
    flex: 1 1 auto;
    margin: 0 0 6px;
  }

  body.mobile-keyboard-open .chat-composer {
    flex: 0 0 auto;
    margin-top: 0;
    margin-bottom: 0;
  }

  body.mobile-keyboard-open .chat-input {
    max-height: min(calc(6lh + 12px), 24dvh);
  }

  body.mobile-keyboard-open .chat-state-banner {
    flex: 0 0 auto;
    margin-top: 4px;
  }

  body.mobile-keyboard-open .chat-home-footer {
    display: none !important;
    content-visibility: hidden;
  }
}