/* ═══ aishchnaya — main styles ═══ */
:root {
  color-scheme: light;
  --c-base: #efefef;
  --c-light: #ffffff;
  --c-mid: #7f7f7f;
  --c-dark: #3f3f3f;
  --c-danger: #ef4444;
  --danger: var(--c-danger);
  --danger-dim: color-mix(in srgb, var(--c-danger) 20%, transparent);
  --text-muted: color-mix(in srgb, var(--c-dark) 60%, transparent);

  --radius: 24px;
  --radius-sm: 16px;

  --composer-max: 960px;
  --btn-sm: 48px;
  --btn-lg: 64px;
  --font-base: 16px;
  --font-lg: 32px;
  --font-sm: 14px;
  --base-padding: 8px;
  --chip-pad: 16px;
  --panel-radius: 32px;

  --pad-top: calc(16px + env(safe-area-inset-top, 0));
  --pad-bot: calc(16px + env(safe-area-inset-bottom, 0));
  --pad-side: max(16px, calc((100% - var(--composer-max)) / 2));

  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--c-dark);
  -webkit-font-smoothing: antialiased;
}
html.dark {
  color-scheme: dark;
  --c-base: #121316;
  --c-light: #212328;
  --c-mid: #4a4e58;
  --c-dark: #f0f2f5;
  --c-danger: #f87171;
}
.pink {
  --c-base: #fdf2f4;
  --c-light: #ffffff;
  --c-mid: #e8a0b0;
  --c-dark: #5c2435;
  --c-danger: #e11d48;
}

/* Warm Stone — modern warm neutral palette */
.stone {
  --c-base: #f5f0ea;
  --c-light: #fdfaf6;
  --c-mid: #7a6a5e;
  --c-dark: #2b231c;
  --c-danger: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body { background: var(--c-base); font-size: var(--font-base); line-height: 1.5; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; -webkit-tap-highlight-color: transparent; }
input, textarea, select { font: inherit; color: inherit; outline: none; }

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }

/* ═══ Main Layout ═══ */
.main {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100dvh;
  height: var(--app-height, 100dvh);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-gutter: stable;
}

/* ═══ MASTER CONTROL SYSTEM (.ctrl) ═══ */
.ctrl {
  height: var(--btn-sm);
  min-width: var(--btn-sm);
  border-radius: 999px;
  background: var(--c-light);
  border: 1px solid var(--c-mid);
  color: var(--c-dark);
  font-size: var(--font-base);
  font-weight: 500;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--base-padding);
  white-space: nowrap;
  text-align: center;
  padding: 0 var(--chip-pad, 16px);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

/* Master Inheritance: All child text and icons inside .ctrl inherit .ctrl's color */
.ctrl .text,
.ctrl span,
.ctrl label {
  color: inherit;
}

.ctrl svg {
  stroke: currentColor;
  pointer-events: none;
}

.ctrl .model-icon-img,
.ctrl .model-icon-mono {
  background-color: currentColor;
}

/* Interactive Hover State */
.ctrl:hover:not(:disabled):not(.disabled):not(.inactive):not(.chip):not([data-theme]) {
  background: var(--c-base);
}

/* Active & Focus States */
.ctrl:focus:not(:disabled),
.ctrl.active {
  border-color: var(--c-dark);
  background: var(--c-base);
}

/* ─── Unified Chip System (.ctrl.chip) ─── */
.ctrl.chip {
  max-width: 100%;
  min-width: var(--btn-sm);
  padding: 0 var(--chip-pad, 16px);
  cursor: default;
  text-align: center;
  gap: 8px;
  overflow: hidden;
}
.ctrl.chip .text {
  text-align: center;
  overflow: visible;
  white-space: nowrap;
  max-width: 100%;
}
.chip-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 24px;
  flex-shrink: 0;
  line-height: 1;
  pointer-events: none;
}
.aspect-rect {
  display: block;
  box-sizing: border-box;
  border: 2px solid var(--c-mid);
  background: transparent;
  border-radius: 2px;
  flex-shrink: 0;
}

/* Static Informational Chips (message badges, read-only stats) */
span.ctrl.chip,
div.ctrl.chip:not(.interactive):not(button),
.ctrl:disabled,
.ctrl.disabled,
.ctrl.inactive,
.disabled .ctrl {
  border-color: var(--c-base);
}

/* Interactive Chip Buttons (paramsBar select chips, picker options, balance chip) */
:is(button.ctrl.chip, a.ctrl.chip, .ctrl.chip.interactive, .ctrl.chip.select, .ctrl.select, .picker-opt, .param-pick-btn, .model-pick-btn) {
  cursor: pointer;
  border-color: var(--c-mid);
  text-align: center;
}

:is(button.ctrl.chip, a.ctrl.chip, .ctrl.chip.interactive, .ctrl.chip.select, .ctrl.select, .picker-opt, .param-pick-btn, .model-pick-btn):hover:not(:disabled) {
  background: var(--c-base);
}

button.ctrl.chip:focus:not(:disabled),
:is(.ctrl.chip, .ctrl.select, .picker-opt, .param-pick-btn, .model-pick-btn, .ctrl.btn).active {
  border-color: var(--c-dark);
  background: var(--c-base);
}

:disabled,
.disabled,
[disabled],
.ctrl:disabled,
.ctrl.disabled,
.ctrl.inactive {
  cursor: not-allowed !important;
  opacity: 1;
}

/* Sub-classes: Specialized Modifiers */
.ctrl.btn {
  width: var(--btn-sm);
  border-radius: 50%;
  flex-shrink: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: none;
}

.ctrl.btn .text {
  text-align: center;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ctrl.chip[data-stars] {
  flex: none;
  flex-shrink: 0;
  width: fit-content;
  white-space: nowrap;
}

.ctrl.select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.ctrl.input {
  width: 68px;
}

/* Sub-class: Ghost Buttons (.ctrl.btn.ghost) */
.logo-btn, .ctrl.btn.ghost {
  background: transparent !important;
  border-color: transparent !important;
}
.logo-btn:hover:not(:disabled), .ctrl.btn.ghost:hover:not(:disabled) {
  border-color: transparent !important;
}
.model-logo-btn {
  cursor: default;
  pointer-events: none;
}
.model-logo-btn.has-chips {
  cursor: pointer;
  pointer-events: auto;
}
.model-logo-btn.has-chips:hover,
.msg-footer.chips-open .model-logo-btn.has-chips {
  background: var(--c-base) !important;
}

/* ─── Message Footer Chips Toggle ─── */
.msg-footer:not(.chips-open) > .msg-chip {
  display: none !important;
}
.model-icon-mono,
.model-icon-img {
  width: 100%;
  height: 100%;
  background-color: var(--c-dark);
  -webkit-mask: var(--icon-mask, url('../img/ChatGPT.svg')) no-repeat center / contain;
  mask: var(--icon-mask, url('../img/ChatGPT.svg')) no-repeat center / contain;
  display: block;
}

.model-icon-chatgpt {
  --icon-mask: url('../img/ChatGPT.svg');
}

.model-icon-grok {
  --icon-mask: url('../img/grok.svg');
}

.model-icon-midjourney {
  --icon-mask: url('../img/midjourney.svg');
}


.telegram-icon-img {
  width: 100%;
  height: 100%;
  background: url('../img/Telegram.svg') no-repeat center / contain;
  display: block;
}

/* ═══════════════════════════════════════════════════════════
   UNIFIED SINGLE TEXT SYSTEM (.text)
   Base: display text, stretches to fill container (flex: 1)
   .adaptive  — shrinks to content width/height (fit-content)
   .editable  — user can type into it (input/textarea behavior)
   ═══════════════════════════════════════════════════════════ */
.text {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--c-dark);
  font-size: var(--font-base);
  font-weight: 500;
  line-height: 1.2;
  outline: none;
  box-sizing: border-box;
  text-align: left;
  /* display text: no overflow truncation by default */
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* ─── Modifier: .adaptive — content-sized (chips, messages) ─── */
.text.adaptive {
  flex: none;
  width: fit-content;
  min-width: 0;
  height: fit-content;
}

/* ─── Modifier: .editable — user-typeable (inputs, textareas) ─── */
.text.editable {
  cursor: text;
  caret-color: var(--c-dark);
}

/* Editable + fixed width: fills row (API key, title input) */
input.text.editable {
  height: var(--btn-sm);
  line-height: var(--btn-sm);
  padding: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Editable + adaptive: grows with content (prompt textarea) */
textarea.text.editable {
  resize: none;
  max-height: 200px;
  min-height: var(--btn-sm);
  height: var(--btn-sm);
  padding: calc((var(--btn-sm) - (var(--font-base) * 1.2)) / 2) 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
textarea.text.editable::-webkit-scrollbar {
  display: none;
}

/* ─── Labels & Titles: single-line truncation ─── */
span.text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Placeholder styling ─── */
.text::placeholder {
  color: var(--c-dark);
  opacity: 0.6;
}

/* ─── Balance Chip Skeleton ─── */
#balanceChip {
  position: relative;
  overflow: hidden;
  flex: none;
  flex-shrink: 0;
  width: fit-content;
  min-width: 64px;
  border-radius: 999px;
}
#balanceChip.skeleton {
  cursor: wait;
  border-radius: 999px;
}
#balanceChip.skeleton .balance-value {
  visibility: hidden;
}

#saveSettingsBtn {
  margin-left: auto;
  flex-shrink: 0;
}

body.is-tg #apiKeyInput {
  display: none !important;
}


/* ─── Size & Tone Modifiers ─── */
.text.sm { font-size: var(--font-sm); }
.text.lg { font-size: var(--font-lg); font-weight: 600; }
.text.muted { opacity: 0.6; }

/* ─── Sub-class: Danger Buttons (.ctrl.btn.danger) ─── */
.delete-btn:hover, .ctrl.btn.danger:hover {
  border-color: var(--c-danger) !important;
  color: var(--c-danger) !important;
}

/* Theme Buttons Background Overrides */
[data-theme="light"] { background: #ffffff !important; }
[data-theme="dark"] { background: #212328 !important; }
[data-theme="pink"] { background: #e8a0b0 !important; }
[data-theme="stone"] { background: #c8baad !important; }

/* ─── Language Switcher Buttons ─── */
.ctrl[data-lang] {
  font-size: var(--font-sm);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.ctrl[data-lang].active {
  border-color: var(--c-dark);
  background: var(--c-base);
  font-weight: 600;
}

.ctrl[data-lang]:not(.active) {
  border-color: var(--c-mid);
  background: var(--c-light);
}

.ctrl[data-lang]:not(.active):hover {
  border-color: var(--c-dark);
  background: var(--c-base);
}

/* ═══ Chat Area & Messages ═══ */
.chat {
  flex: 1;
  overflow: visible;
  padding-left: var(--pad-side);
  padding-right: var(--pad-side);
  width: 100%;
}
.welcome { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 0 24px; color: var(--c-dark); }
.welcome-logo { width: 96px; height: 96px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 24px; background: var(--c-light); border: 1px solid var(--c-base); }
.welcome h1 { font-size: var(--font-lg); font-weight: 600; margin-bottom: 8px; }

/* ═══ Turn Group & Message Rows System (.grp.msg & .row.userch / .row.aishch) ═══ */
.grp.msg {
  animation: msgIn 0.25s ease;
  overflow: visible;
  content-visibility: auto;
  contain-intrinsic-size: auto 400px;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.row.userch {
  align-self: flex-end;
  justify-content: flex-end;
  max-width: 90%;
  width: fit-content;
  min-width: 0;
}

.row.aishch {
  max-width: 100%;
  min-width: 0;
}

.row.userch.padded,
.row.aishch.padded {
  background: var(--c-light);
  border: 1px solid var(--c-base);
  padding: 12px 20px;
  border-radius: var(--radius);
  width: fit-content;
  min-width: 0;
}
.row.userch.padded {
  text-align: right;
}

.row.userch.prompt-text {
  display: block;
  position: relative;
}
.row.userch.prompt-text.collapsible {
  cursor: pointer;
}
.row.userch.prompt-text.collapsible.collapsed {
  max-height: calc(1.2em + 26px);
  max-height: calc(1lh + 26px);
  overflow: hidden;
  overflow: clip;
}
.row.userch.prompt-text.collapsible.collapsed::after {
  content: '';
  position: absolute;
  left: -1px;
  right: -1px;
  bottom: -1px;
  height: 50%;
  background: linear-gradient(to top, var(--c-light), transparent);
  opacity: 0.9;
  pointer-events: none;
  border-radius: inherit;
}

/* Images & Media System (.media & .skeleton) */
.media, .skeleton {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--c-light);
  border: 1px solid var(--c-base);
  width: 100%;
  max-width: 100%;
  max-height: 65vh;
  box-sizing: border-box;
}
.media.loading,
.media.loading *,
.row.media.loading,
.row.media.loading * {
  cursor: default !important;
  pointer-events: none !important;
}

.media.loaded,
.media.loaded img,
.row.media.loaded,
.row.media.loaded img {
  cursor: pointer;
}

.ref-thumb.loading {
  cursor: default !important;
  pointer-events: none !important;
}

.row.media.loading + .row.aishch > .add-ref-btn,
.row.media.loading + .row.aishch > .dl-btn {
  display: none !important;
}

.media img { width: 100%; height: 100%; display: block; object-fit: cover; opacity: 0; transition: opacity 0.25s ease; }
.media.loaded img { opacity: 1; }

/* ─── Media Error / Expired States ─── */
.row.media-dead,
.media.media-dead,
.media-dead {
  display: inline-flex;
  align-items: center;
  gap: var(--base-padding);
  width: fit-content;
  margin: 4px 0;
  cursor: default;
}

.ctrl.chip.expired {
  color: var(--text-muted);
  border-color: var(--c-base);
  cursor: default;
}

.ctrl.chip.failed {
  color: var(--danger);
  border: 1px solid var(--danger-dim);
  cursor: default;
}

.retry-icon {
  font-size: 22px;
  line-height: 1;
  margin-bottom: 4px;
}

/* ═══ Floating Cards (Composer & Top Panel) ═══ */
/* ═══════════════════════════════════════════════════════════
   UNIFIED SINGLE PANEL SYSTEM (.panel)
   ═══════════════════════════════════════════════════════════ */

/* Master Single Class Selector for Card Panels */
.panel {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--c-light);
  border: 1px solid var(--c-mid);
  border-radius: var(--panel-radius);
  padding: var(--base-padding);
  gap: var(--base-padding);
  transition: border-color 0.15s;
  width: 100%;
}

.panel:focus-within,
.panel.expanded {
  border-color: var(--c-mid);
}

/* Panel Expansion Mechanism: Collapsed hides .grp, Expanded hides main .row */
.panel:not(.expanded) > .grp {
  display: none !important;
}

.panel.expanded > .row {
  display: none !important;
}

/* ═══ MASTER BAR WRAPPER SYSTEM (.bar) ═══ */
.bar {
  position: sticky;
  left: 0;
  width: 100%;
  z-index: 10;
  pointer-events: none;
  padding: var(--base-padding) var(--pad-side);
}
.bar:has(.expanded) { z-index: 30; }
.bar > * { pointer-events: auto; }

/* Sub-classes: Top and Bottom Wrappers */

.bar.top {
  top: 0;
  padding-top: calc(var(--base-padding) + env(safe-area-inset-top, 0));
  background: linear-gradient(to bottom, var(--c-base) 0%, transparent 100%);
}

.bar.btm {
  bottom: 0;
  padding-bottom: calc(var(--base-padding) + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(to top, var(--c-base) 0%, transparent 100%);
}

#attachmentStrip {
  pointer-events: none;
  width: fit-content;
  max-width: 100%;
}
#attachmentStrip:empty { display: none !important; }
#attachmentStrip > * { pointer-events: auto; }
.ref-thumb, .ref-skeleton {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-mid);
  padding: 0;
  background: var(--c-light);
}
.ref-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.ref-thumb.loaded img {
  opacity: 1;
}

.ref-overlay {
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--c-base) 50%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-dark);
  opacity: 0;
  transition: opacity 0.15s ease;
  pointer-events: none;
  z-index: 2;
}
.ref-thumb:hover .ref-overlay { opacity: 1; }

.shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--c-dark) 12%, transparent), transparent);
  animation: shimmer 1.5s infinite;
  opacity: 1;
  transition: opacity 0.25s ease;
  pointer-events: none;
  z-index: 1;
}
.loaded .shimmer {
  opacity: 0 !important;
  pointer-events: none;
}

@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.ref-thumb.error {
  border-color: var(--c-danger) !important;
  color: var(--c-danger) !important;
  background: var(--c-light) !important;
}
.ref-error-icon { font-weight: bold; }

/* Spinner Rotation Animation */
.spinner-anim {
  animation: spin 0.8s linear infinite;
  transform-origin: center;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

[data-param] { display: none !important; }
[data-param].show { display: inline-flex !important; }

#paramPickerList {
  display: none;
}

/* When any picker is open in paramsBar: all other parameters and controls disappear */
#paramsBar.picker-open > *:not(#paramPickerList),
#paramsBar.model-picker-open > *:not(#paramPickerList) {
  display: none !important;
}

#paramsBar.picker-open > #paramPickerList,
#paramsBar.model-picker-open > #paramPickerList {
  display: contents !important;
}

.model-select-icon {
  width: 100%;
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.model-select-icon > * {
  width: 100% !important;
  height: 100% !important;
}

.picker-opt,
.model-pick-btn,
.param-pick-btn {
  white-space: nowrap;
}
.picker-opt-icon,
.model-pick-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.picker-opt-icon > *,
.model-pick-icon > * {
  width: 100% !important;
  height: 100% !important;
}

/* Chat List Icons (Single & 2x2 Grid) */
.chat-single-icon {
  width: 100%;
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.chat-single-icon > * {
  width: 100% !important;
  height: 100% !important;
}

.chat-icon-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2px;
  width: calc(var(--btn-sm) * 42 / 48);
  height: calc(var(--btn-sm) * 42 / 48);
  max-width: 42px;
  max-height: 42px;
  box-sizing: border-box;
  pointer-events: none;
}

/* Adaptive 2x1 grid when 2 models are used: centered vertically and horizontally */
.chat-icon-grid.count-2,
.chat-icon-grid:has(.chat-icon-cell:nth-child(2):last-child) {
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: 1fr;
  height: calc((var(--btn-sm) * 42 / 48 - 2px) / 2);
  max-height: 20px;
}

/* 3 models: 2 on top, 1 centered on bottom */
.chat-icon-grid.count-3 .chat-icon-cell:nth-child(3),
.chat-icon-grid:has(.chat-icon-cell:nth-child(3):last-child) .chat-icon-cell:nth-child(3) {
  grid-column: 1 / -1;
  width: calc((var(--btn-sm) * 42 / 48 - 2px) / 2);
  justify-self: center;
}
.chat-icon-cell {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.chat-icon-cell > * {
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
}

#topPanel { position: relative; width: 100%; }
#topPanel.expanded {
  max-height: calc(100vh - (var(--base-padding) * 2 + env(safe-area-inset-top, 0px) + env(safe-area-inset-bottom, 0px)));
  max-height: calc(var(--app-height, 100dvh) - (var(--base-padding) * 2 + env(safe-area-inset-top, 0px) + env(safe-area-inset-bottom, 0px)));
  overflow: hidden;
}
#topPanel.expanded > .grp {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#topPanel.expanded > .grp::-webkit-scrollbar {
  display: none;
}

/* ═══════════════════════════════════════════════════════════
   UNIFIED SINGLE ROW SYSTEM (.row)
   ═══════════════════════════════════════════════════════════ */

/* Master Single Class Selector */
.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--base-padding);
  width: 100%;
  min-height: var(--btn-sm);
  padding: 0;
  box-sizing: border-box;
  cursor: default;
}

.row.padded {
  padding: var(--base-padding);
}

/* Row Alignment Modifiers */
.row.between { justify-content: space-between; }
.row.end { justify-content: flex-end; }
.row.center { justify-content: center; }

.row > .row {
  width: auto;
}

.row[data-action],
.row[data-action] *,
#activeChatTitle,
#activeChatTitle *,
#chatsView .row,
#chatsView .row *,
#modelsView .row,
#modelsView .row *,
#attachmentsView .row,
#attachmentsView .row * {
  cursor: pointer;
}

#chatsView .chat-title-input {
  cursor: text !important;
}

#composerRow {
  align-items: flex-end;
}

#activeChatTitle, .row > .text { flex: 1; min-width: 0; }

#topPanel > .row:first-child,
#activeChatTitle > .row,
#chatsView .row {
  flex-wrap: nowrap !important;
}

#activeChatTitle {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

#activeChatTitle > .row {
  width: 100%;
}

.chat-title-text {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.chat-actions {
  flex-shrink: 0;
  flex-wrap: nowrap !important;
  width: auto !important;
  gap: var(--base-padding);
}

/* ═══════════════════════════════════════════════════════════
   UNIFIED SINGLE GROUP SYSTEM (.grp)
   ═══════════════════════════════════════════════════════════ */

/* Master Single Class Selector for Vertical Flex Group Containers */
.grp, .panel-view {
  display: flex;
  flex-direction: column;
  gap: var(--base-padding);
  width: 100%;
  padding: 0;
  margin: 0;
  overflow-y: auto;
}

.grp.padded {
  padding: var(--base-padding);
}

/* ═══ Overlay & Lightbox ═══ */
.overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--c-base) 50%, transparent);
  z-index: 20;
  backdrop-filter: blur(4px);
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--c-base) 50%, transparent);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  touch-action: none;
}
.lightbox img {
  max-width: 100vw;
  max-height: 100vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
  pointer-events: auto;
}
.lightbox-close {
  position: fixed;
  top: var(--pad-top);
  right: calc(16px + env(safe-area-inset-right, 0px));
  z-index: 10000;
  pointer-events: auto;
}

/* Hidden utility */
.hidden { display: none !important; }

/* ═══ Responsive ═══ */
@media(max-width:768px) {
  :root {
    --base-padding: 6px;
    --chip-pad: 14px;
    --panel-radius: 28px;
    --pad-top: calc(12px + env(safe-area-inset-top, 0));
    --pad-bot: calc(12px + env(safe-area-inset-bottom, 0));
    --pad-side: max(12px, calc((100% - var(--composer-max)) / 2));
  }
  .row.userch { max-width: 95%; }
  .lightbox-close { right: calc(12px + env(safe-area-inset-right, 0px)); }
}

@media(max-width:480px) {
  :root {
    --btn-sm: 44px;
    --btn-lg: 52px;
    --font-base: 15px;
    --font-sm: 13px;
    --base-padding: 4px;
    --chip-pad: 14px;
    --panel-radius: 24px;
    --pad-top: calc(8px + env(safe-area-inset-top, 0));
    --pad-bot: calc(8px + env(safe-area-inset-bottom, 0));
    --pad-side: max(8px, calc((100% - var(--composer-max)) / 2));
  }
  #paramsBar,
  .params-bar {
    overflow-x: auto;
    max-width: 100%;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  #paramsBar::-webkit-scrollbar,
  .params-bar::-webkit-scrollbar { display: none; }
  .row.userch { max-width: 100%; }
  .row.userch.padded,
  .row.aishch.padded {
    padding: 12px 16px;
  }
  .lightbox-close { right: calc(8px + env(safe-area-inset-right, 0px)); }
}

/* ═══ System Messages ═══ */


/* Typing indicator dots inside standard chip */
.sys-typing {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  height: calc(var(--font-base) * 1.6);
  margin: 0 auto;
}

.sys-typing span {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-mid);
  animation: sysDot 1.2s infinite ease-in-out;
}

.sys-typing span:nth-child(1) { animation-delay: 0s; }
.sys-typing span:nth-child(2) { animation-delay: 0.2s; }
.sys-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes sysDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* Inline delete/clear confirmation buttons */
.confirm-row {
  display: flex;
  gap: var(--base-padding);
}

.inline-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  width: 1.6em;
  height: 1.6em;
  margin: 0 0.2em;
  border-radius: 50%;
  background: var(--c-light);
  border: 1px solid var(--c-mid);
  color: var(--c-dark);
}
.inline-icon svg {
  width: 60%;
  height: 60%;
  stroke: currentColor;
}