/* Preserve the original theme while keeping controls inside the available screen. */
#app { grid-template-columns: 280px minmax(0, 1fr) 346px; grid-template-rows: 58px minmax(0, 1fr); height: 100vh; height: 100dvh; }
#app.hide-right { grid-template-columns: 280px minmax(0, 1fr) 0; }
#topbar, #chat-area, #char-header, #input-bar, .input-row { min-width: 0; }
#messages { min-height: 0; }
.input-row { width: 100%; }
#msg-input { flex: 1 1 0; min-width: 0; }
#send-btn { flex: 0 0 46px; }
.header-avatar-wrap { flex-shrink: 0; }
.img-modal-box { max-height: calc(100dvh - 24px); overflow-y: auto; overscroll-behavior: contain; }

/* Full-size previews always offer a labeled download action, on mouse and touch. */
#img-viewer { flex-direction: column; gap: 14px; padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)); }
.image-viewer-toolbar { display: flex; justify-content: flex-end; gap: 10px; width: 100%; max-width: 1100px; flex-shrink: 0; cursor: default; }
.image-viewer-toolbar button { min-height: 44px; padding: 10px 16px; border: 1px solid var(--border); border-radius: 9px; background: var(--raised); color: var(--bright); cursor: pointer; font-size: .88rem; font-weight: 600; }
#img-viewer-download { background: var(--teal); border-color: var(--teal); color: #05262d; }
#img-viewer #img-viewer-img { min-height: 0; max-width: 100%; max-height: calc(100dvh - 100px); object-fit: contain; flex: 0 1 auto; }
.gen-gallery-dl:focus-visible { opacity: 1; }
@media (hover: none), (pointer: coarse) {
  .msg-img-wrap .gen-gallery-dl, .gen-gallery-item .gen-gallery-dl { opacity: 1; min-width: 44px; min-height: 44px; display: grid; place-items: center; }
}

@media (max-width: 1024px) {
  html, body { overflow: clip; }
  #app, #app.hide-right { position: fixed; left: 0; right: 0; overflow: clip; grid-template-columns: minmax(0, 1fr); grid-template-rows: auto minmax(0, 1fr); height: var(--chat-viewport-height, 100dvh); top: var(--chat-viewport-top, 0px); }
  #topbar { min-height: 58px; flex-wrap: wrap; gap: 6px 12px; padding-block: 6px; }
  .topbar-left { min-width: 0; }
  .topbar-right { min-width: 0; max-width: 100%; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-left: auto; }
  .patreon-link { display: none; }
  #input-bar { padding-right: max(14px, env(safe-area-inset-right)); padding-left: max(14px, env(safe-area-inset-left)); padding-bottom: max(14px, env(safe-area-inset-bottom)); }
  #msg-input { font-size: 16px; }
}
@media (max-width: 760px) {
  .topbar-brand { display: none; }
  #topbar { flex-wrap: nowrap; gap: 6px; }
  .topbar-right { flex-wrap: nowrap; gap: 5px; }
  .btn-creator, .btn-store, .btn-logout { padding: 6px 8px; font-size: .72rem; }
  #char-header { flex-wrap: wrap; gap: 8px 10px; padding: 10px 14px; }
  .header-id { flex: 1 1 calc(100% - 66px); min-width: 0; }
  #char-header-name { font-size: 1.08rem; }
  #char-header-desc { max-width: 100%; }
  .chat-transfer-btn, .clear-btn { min-height: 40px; padding: 7px 12px; }
  .rel-roadmap { flex-basis: 100%; }
  .input-row { gap: 8px; }
  .btn-creator, .btn-store, .btn-logout { white-space: nowrap; }
  .phone-mode-bar { flex-wrap: wrap; gap: 6px 9px; padding: 8px 14px; }
  .phone-mode-copy { flex: 1 1 calc(100% - 55px); }
  .phone-mode-copy span { line-height: 1.4; }
  .phone-mode-live { margin-left: 41px; }
  .mode-switch-btn { margin-left: auto; }
}
@media (max-width: 380px) {
  .topbar-left { display: none; }
  #topbar { padding-inline: 8px; gap: 4px; }
  .topbar-right { gap: 5px; }
  .btn-creator, .btn-store, .btn-logout { padding-inline: 8px; font-size: .7rem; }
  #msg-input { padding-inline: 10px; }
  .image-viewer-toolbar button { padding-inline: 12px; font-size: .8rem; }
}
/* The phone keyboard can leave little height even when the layout viewport is tall. */
#app.compact-viewport #char-header { padding-block: 5px; gap: 4px 8px; }
#app.compact-viewport #char-header-desc { display: none; }
#app.compact-viewport #char-header-avatar { width: 30px; height: 30px; }
#app.compact-viewport .chat-transfer-btn, #app.compact-viewport .clear-btn { min-height: 32px; padding-block: 4px; }
#app.compact-viewport .phone-mode-bar { padding-block: 6px; flex-wrap: nowrap; }
#app.compact-viewport .phone-mode-icon, #app.compact-viewport .phone-mode-copy span { display: none; }
#app.compact-viewport .phone-mode-copy { flex: 1 1 0; }
#app.compact-viewport .phone-mode-live { margin-left: 0; }
#app.compact-viewport .mode-switch-btn { max-width: 90px; white-space: normal; font-size: .55rem; }
#app.compact-viewport #input-bar { padding-top: 6px; padding-bottom: max(6px, env(safe-area-inset-bottom)); }