:root {
  --font-ui: "Outfit", "Noto Sans SC", sans-serif;
  --radius-shell: 24px;
  --radius-xl: 22px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --ease-fast: 160ms ease;
  --ease-base: 240ms ease;
}

html[data-theme="dark"] {
  --bg: #101214;
  --bg-soft: #171a1d;
  --panel: #15181b;
  --panel-soft: #1c2024;
  --panel-strong: #242a2f;
  --input: #22272b;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f6f8;
  --text-soft: #a9b4bf;
  --text-faint: #74808c;
  --accent: #2b7fff;
  --accent-2: #55b6ff;
  --danger: #ff6f6f;
  --shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.28);
}

html[data-theme="light"] {
  --bg: #f3f5f7;
  --bg-soft: #edf1f4;
  --panel: #ffffff;
  --panel-soft: #f7f9fb;
  --panel-strong: #eff3f7;
  --input: #ffffff;
  --line: rgba(19, 27, 42, 0.08);
  --line-strong: rgba(19, 27, 42, 0.14);
  --text: #131722;
  --text-soft: #697386;
  --text-faint: #8d95a3;
  --accent: #2066e2;
  --accent-2: #4da2ff;
  --danger: #db4d4d;
  --shadow: 0 28px 60px rgba(20, 31, 56, 0.08);
  --shadow-soft: 0 18px 40px rgba(20, 31, 56, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  height: 100vh;
  overflow: hidden;
  font-family: var(--font-ui);
  color: var(--text);
  background: var(--bg);
}

body.drawer-open {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 72px 320px minmax(0, 1fr);
  height: 100vh;
  background: var(--bg);
}

.app-shell.image-mode {
  grid-template-columns: 72px minmax(0, 1fr);
}

.app-shell.image-mode .sidebar {
  display: none;
}

.app-shell.image-mode .rail-logo {
  opacity: 0.35;
  pointer-events: none;
}

.screen-backdrop {
  position: fixed;
  inset: 0;
  z-index: 12;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(3px);
}

.mode-rail,
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
}

.mode-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 18px 12px;
}

.rail-logo,
.rail-mini,
.rail-btn,
.new-session-btn,
.session-item,
.control-btn,
.save-btn,
.mode-chip,
.subtle-btn,
.send-btn,
.icon-btn,
.session-icon-btn,
.modal-card {
  transition:
    transform var(--ease-fast),
    background-color var(--ease-fast),
    border-color var(--ease-fast),
    color var(--ease-fast),
    opacity var(--ease-fast);
}

.rail-logo,
.rail-mini {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
  font-weight: 700;
}

.rail-group,
.rail-footer {
  display: grid;
  gap: 10px;
}

.rail-footer {
  margin-top: auto;
}

.rail-logo-mark {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
}

.rail-logo-mark svg {
  display: block;
  width: 24px;
  height: 24px;
}

.rail-btn {
  display: grid;
  gap: 6px;
  justify-items: center;
  width: 56px;
  padding: 10px 6px;
  border-radius: 18px;
  color: var(--text-soft);
  background: transparent;
  border: 1px solid transparent;
}

.rail-btn.active {
  color: var(--text);
  background: var(--panel-soft);
  border-color: var(--line);
}

.rail-icon {
  width: 20px;
  height: 20px;
  line-height: 1;
}

.rail-icon svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.rail-text {
  font-size: 0.8rem;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
  overflow: hidden;
  padding: 20px 14px 16px;
}

.sidebar-head,
.sidebar-meta,
.topbar,
.topbar-right,
.composer-info,
.composer-toolbar,
.session-actions,
.mode-switch {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-head,
.sidebar-meta,
.topbar,
.composer-toolbar {
  justify-content: space-between;
}

.sidebar-head h1,
.topbar h2 {
  margin: 2px 0 0;
}

.sidebar-head h1 {
  font-size: 1.95rem;
}

.eyebrow,
.hint,
.status,
.message-role,
.session-meta,
.section-count {
  letter-spacing: 0.02em;
}

.eyebrow {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.new-session-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 18px;
  border-radius: 18px;
  color: var(--text-soft);
  background: transparent;
  border: 1px dashed var(--line-strong);
}

.new-session-btn:hover,
.rail-btn:hover,
.session-item:hover,
.control-btn:hover,
.mode-chip:hover,
.subtle-btn:hover,
.send-btn:hover,
.icon-btn:hover,
.rail-logo:hover,
.rail-mini:hover {
  transform: translateY(-1px);
}

.plus-box {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 8px;
  color: var(--text);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.sidebar-meta {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.section-count {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  color: var(--text-faint);
  background: var(--panel-soft);
}

.session-list {
  display: flex;
  flex: 1;
  min-height: 0;
  flex-direction: column;
  gap: 8px;
  overflow: auto;
  padding-right: 4px;
}

.session-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 14px 14px 13px;
  border-radius: 16px;
  color: var(--text-soft);
  background: transparent;
  border: 1px solid transparent;
}

.session-item.active {
  color: var(--text);
  background: var(--panel-soft);
  border-color: var(--line);
}

.session-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: inherit;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.session-open-btn {
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 0;
  text-align: left;
  color: inherit;
  background: transparent;
  border: 0;
}

.session-main {
  min-width: 0;
}

.session-preview {
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--text-faint);
  min-height: 1.3em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-meta {
  color: var(--text-faint);
  font-size: 0.77rem;
}

.session-item-actions {
  display: inline-flex;
  align-items: center;
  align-self: center;
  gap: 6px;
  opacity: 0;
}

.session-item:hover .session-item-actions,
.session-item.active .session-item-actions {
  opacity: 1;
}

.session-icon-btn {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 10px;
  color: var(--text-faint);
  background: transparent;
  border: 1px solid transparent;
}

.session-icon-btn svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.session-icon-btn:hover {
  color: var(--text);
  background: var(--panel-strong);
  border-color: var(--line);
}

.session-icon-btn.danger:hover {
  color: var(--danger);
}

.main-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  position: relative;
  min-width: 0;
  height: 100vh;
  background: var(--bg);
}

.topbar {
  padding: 18px 22px 0;
}

.topbar.image-mode {
  position: absolute;
  top: 18px;
  right: 22px;
  z-index: 6;
  padding: 0;
  pointer-events: none;
}

.topbar-left h2 {
  font-size: 1.3rem;
  line-height: 1.1;
}

.title-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.mode-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.84rem;
}

.topbar-note {
  color: var(--text-faint);
  font-size: 0.88rem;
}

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

.topbar-right.image-mode {
  width: auto;
  pointer-events: auto;
}

.topbar.image-mode .topbar-right {
  justify-content: flex-end;
}

.inline-field,
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.inline-field span,
.field span {
  color: var(--text-faint);
  font-size: 0.76rem;
}

.inline-field input,
.field input,
.field select,
.composer textarea {
  border: 1px solid var(--line);
  background: var(--input);
  color: var(--text);
  outline: none;
}

.inline-field input,
.field input,
.field select {
  min-width: 240px;
  padding: 12px 14px;
  border-radius: 14px;
}

.control-btn,
.subtle-btn,
.save-btn {
  padding: 12px 15px;
  border-radius: 14px;
  color: var(--text-soft);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.subtle-btn.danger {
  color: var(--danger);
}

.save-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  border-color: transparent;
}

.config-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 14;
  width: min(420px, 100vw);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  background: var(--panel);
  border-left: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.config-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 22px 16px;
  border-bottom: 1px solid var(--line);
}

.config-drawer-head h3 {
  margin: 4px 0 0;
  font-size: 1.35rem;
}

.config-drawer-body {
  overflow: auto;
  padding: 18px 22px 22px;
}

.config-grid {
  display: grid;
  gap: 12px;
}

.drawer-note {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.drawer-note p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.6;
}

.drawer-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.drawer-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  text-decoration: none;
}

.drawer-actions .save-btn {
  width: 100%;
  min-height: 46px;
}

.workspace {
  position: relative;
  display: grid;
  min-height: 0;
  overflow: hidden;
  padding: 18px 22px 0;
}

.workspace.studio-mode {
  padding-top: 18px;
  padding-bottom: 18px;
  padding-left: 18px;
}

.image-studio {
  display: grid;
  grid-template-columns: 332px minmax(0, 1fr);
  gap: 0;
  height: 100%;
  min-height: 100%;
  border-top: 0;
}

.studio-panel-head {
  display: grid;
  gap: 6px;
  padding: 0 2px 0 0;
}

.studio-panel-head h3 {
  margin: 0;
  font-size: 1.4rem;
}

.studio-panel-copy {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.7;
  min-height: 0;
}

.image-controls {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 0 20px 22px 0;
  background: transparent;
  border-right: 1px solid var(--line);
  overflow: auto;
}

.image-controls,
.image-preview {
  height: 100%;
  min-height: 100%;
}

.image-control-grid.two-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.image-control-block {
  display: grid;
  gap: 10px;
}

.control-label,
.control-count {
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.control-inline-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.subtle-inline-btn {
  padding: 0;
  color: var(--text-faint);
  background: transparent;
  border: 0;
  font-size: 0.82rem;
  cursor: pointer;
}

.subtle-inline-btn:hover {
  color: var(--text);
}

.control-count {
  color: var(--text-faint);
  font-size: 0.86rem;
  font-weight: 500;
}

.image-model-brand-tabs {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  gap: 8px;
  padding: 6px;
  border-radius: 16px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.image-model-brand-tab {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 110px;
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--text-soft);
  background: transparent;
  border: 1px solid transparent;
  font-size: 0.82rem;
}

.image-model-brand-tab.active {
  color: var(--text);
  background: var(--panel);
  border-color: var(--line);
  box-shadow: var(--shadow-soft);
}

.image-model-brand-tab-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.image-model-brand-name {
  font-weight: 600;
}

.image-model-brand-count {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text-faint);
  font-size: 0.72rem;
}

.image-model-brand-tab.active .image-model-brand-count {
  color: var(--text-soft);
  background: var(--panel-soft);
}

.accent-gemini {
  background: linear-gradient(135deg, #7c9cff, #3f6fff);
}

.image-model-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.image-model-card {
  display: grid;
  gap: 12px;
  min-height: 126px;
  padding: 14px;
  border-radius: 18px;
  text-align: left;
  color: var(--text-soft);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent 38%),
    rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
}

.image-model-card.active {
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(77, 162, 255, 0.14), transparent 42%),
    rgba(255, 255, 255, 0.04);
  border-color: var(--line-strong);
  box-shadow: inset 0 0 0 1px rgba(77, 162, 255, 0.08);
}

.image-model-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.image-model-card-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--panel-soft);
  border: 1px solid var(--line);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.image-model-card-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.image-model-card-name {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.25;
}

.image-model-card-value {
  color: var(--text-faint);
  font-size: 0.72rem;
  line-height: 1.35;
  word-break: break-word;
}

.image-model-card-note {
  color: var(--text-soft);
  font-size: 0.76rem;
  line-height: 1.5;
}

.image-model-card-check {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
}

.image-model-card.active .image-model-card-check {
  border-color: rgba(77, 162, 255, 0.52);
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 0 4px rgba(77, 162, 255, 0.1);
}

.image-model-card.active .image-model-card-check::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: #fff;
}

.segmented-group,
.count-chip-group {
  display: grid;
  gap: 10px;
}

.segmented-group {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ratio-group {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.segmented-btn,
.count-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
}

.segmented-btn.active,
.count-chip.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(77, 162, 255, 0.12), transparent), rgba(255, 255, 255, 0.04);
  border-color: var(--line-strong);
  box-shadow: inset 0 0 0 1px rgba(77, 162, 255, 0.06);
}

.image-textarea {
  width: 100%;
  min-height: 176px;
  padding: 16px 18px;
  resize: vertical;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  outline: none;
  line-height: 1.7;
}

.image-textarea.compact {
  min-height: 88px;
}

.image-reference-panel {
  display: grid;
  min-height: 132px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
}

.image-reference-empty {
  display: grid;
  place-items: center;
  min-height: 108px;
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed var(--line-strong);
  color: var(--text-faint);
  text-align: center;
  line-height: 1.7;
}

.image-reference-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.image-reference-card img {
  display: block;
  width: 92px;
  height: 92px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.image-reference-copy {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.image-reference-title {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
}

.image-reference-meta {
  color: var(--text-soft);
  font-size: 0.8rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.image-control-actions {
  display: grid;
  gap: 10px;
}

.image-generate-btn {
  min-height: 54px;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: var(--shadow-soft);
}

.image-generate-btn:disabled,
.send-btn:disabled {
  cursor: wait;
  opacity: 0.7;
  transform: none;
}

.image-action-note {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.82rem;
  line-height: 1.7;
}

.image-preview {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0;
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: 0 26px;
  justify-items: center;
}

.image-preview.is-empty {
  align-content: stretch;
}

.image-preview-stage {
  display: grid;
  gap: 20px;
  width: min(100%, 1080px);
  min-height: 0;
  min-height: 100%;
  padding-top: 0;
  margin: 0 auto;
}

.image-preview-stage.is-empty {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}

.image-preview-empty {
  display: grid;
  min-height: 100%;
  padding: 0;
  place-items: stretch;
}

.studio-welcome-card {
  display: grid;
  justify-items: center;
  align-content: center;
  width: 100%;
  min-height: 100%;
  padding: 10px 12px 20px;
  text-align: center;
}

.studio-welcome-card .hero-title,
.studio-welcome-card .hero-subtitle {
  max-width: 820px;
}

.studio-hero-marquee {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  margin-top: 4px;
  width: 100%;
  max-width: 1080px;
  font-size: clamp(2.8rem, 5.2vw, 5rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.05em;
  color: rgba(255, 255, 255, 0.92);
}

html[data-theme="light"] .studio-hero-marquee {
  color: rgba(19, 23, 34, 0.92);
}

.studio-hero-marquee span:nth-child(2n) {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.studio-welcome-card .hero-title,
.studio-welcome-card .hero-subtitle,
.studio-welcome-card .hero-feature-row {
  text-align: center;
  justify-content: center;
}

.image-result-stack {
  display: grid;
  gap: 18px;
  width: 100%;
  padding-bottom: 18px;
}

.image-history-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.image-history-stat {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 28%),
    rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
}

.image-history-stat.warning {
  border-color: rgba(255, 111, 111, 0.26);
  background:
    linear-gradient(180deg, rgba(255, 111, 111, 0.1), transparent 38%),
    rgba(255, 255, 255, 0.025);
}

.image-history-stat-label {
  color: var(--text-faint);
  font-size: 0.78rem;
}

.image-history-stat-value {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
}

.image-result-card {
  display: grid;
  gap: 16px;
  padding: 18px;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 26%),
    rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
}

.image-result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.image-result-head-side {
  display: grid;
  justify-items: end;
  gap: 8px;
  flex: 0 0 auto;
}

.image-result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.image-refine-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: var(--shadow-soft);
}

.image-result-action-hint {
  color: var(--text-faint);
  font-size: 0.82rem;
  line-height: 1.6;
}

.image-result-title {
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.image-result-meta,
.image-result-time {
  color: var(--text-faint);
  font-size: 0.82rem;
}

.image-result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.image-result-tile {
  position: relative;
}

.image-result-link {
  display: block;
  overflow: hidden;
  border-radius: 18px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.image-result-link img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.image-tile-refine-btn {
  position: absolute;
  left: 12px;
  right: calc(50% + 6px);
  bottom: 12px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  color: #fff;
  background: rgba(16, 18, 20, 0.84);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity var(--ease-fast),
    transform var(--ease-fast),
    background-color var(--ease-fast),
    border-color var(--ease-fast);
}

.image-result-tile:hover .image-tile-refine-btn,
.image-result-tile:focus-within .image-tile-refine-btn {
  opacity: 1;
  transform: translateY(0);
}

.image-tile-delete-btn {
  position: absolute;
  left: calc(50% + 6px);
  right: 12px;
  bottom: 12px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  color: #fff;
  background: rgba(180, 54, 54, 0.88);
  border: 1px solid rgba(255, 150, 150, 0.24);
  backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity var(--ease-fast),
    transform var(--ease-fast),
    background-color var(--ease-fast),
    border-color var(--ease-fast);
}

.image-result-tile:hover .image-tile-delete-btn,
.image-result-tile:focus-within .image-tile-delete-btn {
  opacity: 1;
  transform: translateY(0);
}

.image-result-grid.ratio-16-9 .image-result-link img {
  aspect-ratio: 16 / 9;
}

.image-result-grid.ratio-9-16 .image-result-link img {
  aspect-ratio: 9 / 16;
}

.welcome-card {
  display: grid;
  justify-items: center;
  align-content: center;
  min-height: min(52vh, 520px);
  padding: 40px 20px 28px;
  text-align: center;
}

.hero-caption {
  margin: 0 0 12px;
  color: var(--text-faint);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hero-marquee {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
  max-width: 1080px;
  font-size: clamp(3rem, 6vw, 5.75rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.05em;
  color: rgba(255, 255, 255, 0.92);
}

html[data-theme="light"] .hero-marquee {
  color: rgba(19, 23, 34, 0.92);
}

.hero-marquee span:nth-child(2n) {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.hero-title {
  margin: 20px 0 0;
  max-width: 720px;
  color: var(--text);
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  font-weight: 600;
  line-height: 1.3;
}

.hero-feature-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.hero-feature {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 0.84rem;
}

.mode-chip {
  padding: 11px 16px;
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.mode-chip.active {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--panel-strong);
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(960px, 100%);
  margin: 0 auto;
  padding-bottom: 24px;
  min-height: 0;
  overflow: auto;
}

.message {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.message.user {
  margin-left: auto;
  width: min(760px, 100%);
  background: var(--panel-strong);
}

.message.assistant,
.message.system {
  width: min(820px, 100%);
}

.message-role {
  font-size: 0.73rem;
  color: var(--text-faint);
  text-transform: uppercase;
}

.message-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.message-time {
  color: var(--text-faint);
  font-size: 0.74rem;
}

.message-body {
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-body img {
  display: block;
  width: min(100%, 420px);
  margin-top: 12px;
  border-radius: 14px;
}

.message-body a {
  color: inherit;
}

.composer-dock {
  display: grid;
  gap: 10px;
  width: min(1020px, calc(100% - 44px));
  margin: 0 auto;
  padding: 12px 0 22px;
  position: sticky;
  bottom: 0;
  z-index: 3;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0), var(--bg) 22%);
}

.composer-toolbar {
  color: var(--text-soft);
}

.composer-info {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.composer-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 0 6px rgba(127, 176, 255, 0.08);
}

.composer-model {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--text-faint);
  font-size: 0.78rem;
  max-width: 180px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.model-picker {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 28%),
    var(--panel);
  box-shadow: var(--shadow-soft);
}

.model-picker.collapsed {
  display: none;
}

.model-picker-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border-radius: 16px;
  color: var(--text-soft);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.model-picker-toggle.active {
  color: var(--text);
  background: var(--panel);
}

.model-picker-toggle.compact {
  padding-top: 8px;
  padding-bottom: 8px;
}

.model-picker-toggle-main {
  display: grid;
  gap: 2px;
  text-align: left;
}

.model-picker-toggle-label {
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.model-picker-toggle-value {
  font-size: 0.88rem;
  color: inherit;
}

.model-picker-toggle-icon {
  font-size: 0.9rem;
  color: var(--text-faint);
}

.model-picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.model-picker-head h3 {
  margin: 0;
  font-size: 0.94rem;
  font-weight: 600;
}

.model-picker-head .eyebrow {
  display: none;
}

.model-picker-summary {
  display: inline-flex;
  align-items: center;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 0.78rem;
}

.model-brand-tabs {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  gap: 8px;
  padding: 6px;
  border-radius: 16px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.model-brand-tab {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 124px;
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--text-soft);
  background: transparent;
  border: 1px solid transparent;
  font-size: 0.82rem;
}

.model-brand-tab.active {
  color: var(--text);
  background: var(--panel);
  border-color: var(--line);
  box-shadow: var(--shadow-soft);
}

.model-brand-tab-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.model-brand-name {
  font-weight: 600;
}

.model-brand-count {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text-faint);
  font-size: 0.72rem;
}

.model-brand-tab.active .model-brand-count {
  color: var(--text-soft);
  background: var(--panel-soft);
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.accent-chatgpt {
  background: linear-gradient(135deg, #62d4a8, #2ea97d);
}

.accent-claude {
  background: linear-gradient(135deg, #f7b36c, #dd8249);
}

.model-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(164px, 1fr));
  gap: 10px;
}

.model-card {
  display: grid;
  gap: 10px;
  min-height: 0;
  padding: 12px 13px;
  text-align: left;
  color: var(--text-soft);
  border-radius: 16px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.model-card.active {
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(77, 162, 255, 0.1), transparent 42%),
    var(--panel);
  border-color: var(--line-strong);
  box-shadow: inset 0 0 0 1px rgba(127, 176, 255, 0.08);
}

.model-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.model-card-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.model-card-brand {
  color: var(--text-faint);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.model-card-name {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.25;
}

.model-card-value {
  color: var(--text-faint);
  font-size: 0.73rem;
  word-break: break-word;
  line-height: 1.35;
}

.model-card-check {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
}

.model-card.active .model-card-check {
  border-color: rgba(77, 162, 255, 0.5);
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 0 4px rgba(77, 162, 255, 0.1);
}

.model-card.active .model-card-check::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: #fff;
}

.session-icon-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.mode-switch,
.session-actions {
  flex-wrap: wrap;
}

.composer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 12px;
  border-radius: 24px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.composer textarea {
  min-height: 74px;
  max-height: 220px;
  resize: none;
  padding: 16px 18px;
  border-radius: 18px;
}

.send-btn {
  min-width: 110px;
  min-height: 74px;
  padding: 0 20px;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
}

.hint,
.status {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.84rem;
}

.empty-state {
  padding: 14px;
  border-radius: 14px;
  color: var(--text-faint);
  border: 1px dashed var(--line);
}

.hidden {
  display: none !important;
}

.hidden-accessible {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.mobile-only {
  display: none;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  color: var(--text-soft);
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.modal-layer {
  position: fixed;
  inset: 0;
  z-index: 16;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-card {
  width: min(440px, 100%);
  padding: 22px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.modal-head h3 {
  margin: 4px 0 0;
  font-size: 1.32rem;
}

.modal-copy {
  margin: 14px 0 0;
  color: var(--text-soft);
  line-height: 1.65;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

#modalConfirmBtn.danger {
  background: linear-gradient(135deg, #ff7c7c, #ff5e5e);
}

.session-list::-webkit-scrollbar,
.workspace::-webkit-scrollbar,
.config-drawer-body::-webkit-scrollbar,
.messages::-webkit-scrollbar {
  width: 8px;
}

.session-list::-webkit-scrollbar-thumb,
.workspace::-webkit-scrollbar-thumb,
.config-drawer-body::-webkit-scrollbar-thumb,
.messages::-webkit-scrollbar-thumb {
  background: var(--panel-strong);
  border-radius: 999px;
}

html.theme-switching *,
html.theme-switching *::before,
html.theme-switching *::after {
  transition: none !important;
  animation: none !important;
}

@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .app-shell.image-mode {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 72px;
    z-index: 13;
    width: min(320px, calc(100vw - 72px));
    box-shadow: var(--shadow);
    transform: translateX(-110%);
    transition: transform var(--ease-base);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-only {
    display: inline-grid;
  }
}

@media (max-width: 760px) {
  body {
    height: auto;
    min-height: 100vh;
    overflow: auto;
    padding-bottom: calc(92px + env(safe-area-inset-bottom, 0px));
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100vh;
  }

  .app-shell.image-mode {
    grid-template-columns: 1fr;
  }

  .main-panel {
    height: auto;
    min-height: 100vh;
    grid-template-rows: auto minmax(0, 1fr) auto;
  }

  .mode-rail {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
    border-right: 0;
    border-top: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(16px);
  }

  .rail-group,
  .rail-footer {
    display: grid;
    align-items: stretch;
  }

  .rail-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .rail-footer {
    grid-template-columns: repeat(2, 42px);
    gap: 8px;
  }

  .rail-logo {
    display: inline-grid;
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }

  .rail-btn {
    width: 100%;
    min-height: 44px;
    grid-auto-flow: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 16px;
  }

  .rail-text {
    font-size: 0.78rem;
  }

  .sidebar {
    inset: 0 0 calc(72px + env(safe-area-inset-bottom, 0px)) 0;
    width: 100vw;
    padding-bottom: 16px;
  }

  .image-reference-card {
    grid-template-columns: 1fr;
  }

  .image-reference-card img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .image-result-head {
    flex-direction: column;
  }

  .image-result-head-side {
    justify-items: start;
  }

  .image-history-stats {
    grid-template-columns: 1fr;
  }

  .session-item-actions {
    opacity: 1;
  }

  .image-result-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .image-tile-refine-btn {
    opacity: 1;
    transform: translateY(0);
    left: 10px;
    right: auto;
    min-height: 36px;
    padding: 0 12px;
    font-size: 0.78rem;
  }

  .image-tile-delete-btn {
    opacity: 1;
    transform: translateY(0);
    left: auto;
    right: 10px;
    min-height: 36px;
    padding: 0 12px;
    font-size: 0.78rem;
  }

  .topbar,
  .workspace {
    padding-left: 14px;
    padding-right: 14px;
  }

  .topbar.image-mode {
    position: sticky;
    top: 0;
    right: auto;
    left: auto;
    padding: 10px 14px 0;
    background: linear-gradient(180deg, var(--bg) 72%, rgba(0, 0, 0, 0));
  }

  .topbar,
  .title-meta {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-left h2 {
    font-size: 1.12rem;
  }

  .topbar-right {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
  }

  .topbar-right .control-btn {
    flex: 1 1 0;
    min-width: 0;
    min-height: 40px;
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 0.84rem;
  }

  .model-picker-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .model-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .image-model-brand-tabs {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .image-model-card-grid {
    grid-template-columns: 1fr;
  }

  .inline-field input,
  .field input,
  .field select {
    min-width: 0;
    width: 100%;
  }

  .hero-marquee {
    gap: 12px;
    font-size: 2.4rem;
  }

  .hero-title {
    font-size: 1.1rem;
  }

  .workspace.studio-mode {
    padding-top: 10px;
    padding-bottom: 18px;
    padding-left: 14px;
  }

  .image-studio,
  .image-control-grid.two-cols {
    grid-template-columns: 1fr;
  }

  .studio-welcome-card {
    min-height: auto;
    padding: 12px 0 0;
  }

  .image-controls,
  .image-preview {
    min-height: auto;
  }

  .image-controls {
    padding: 10px 0 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .image-preview {
    padding: 18px 0 0;
  }

  .image-preview-stage {
    gap: 16px;
  }

  .control-inline-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
  }

  .composer-toolbar {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .composer-info {
    flex: 1;
    min-width: 0;
  }

  .composer-status {
    min-width: 0;
  }

  .composer-model {
    max-width: 46vw;
  }

  .composer {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 10px;
    border-radius: 20px;
  }

  .composer textarea {
    min-height: 62px;
    padding: 14px 16px;
  }

  .send-btn {
    width: 100%;
    min-height: 56px;
  }

  .composer-dock {
    width: calc(100% - 20px);
    padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    margin-bottom: 10px;
  }

  .model-picker {
    max-height: min(48vh, 420px);
    overflow: auto;
  }

  .config-drawer {
    width: 100vw;
  }

  .config-drawer-head,
  .config-drawer-body {
    padding-left: 16px;
    padding-right: 16px;
  }

  .config-drawer-body {
    padding-bottom: calc(22px + env(safe-area-inset-bottom, 0px));
  }

  .drawer-actions {
    grid-template-columns: 1fr;
  }

  .message,
  .message.user,
  .message.assistant,
  .message.system {
    width: 100%;
    margin-left: 0;
  }

  .message {
    padding: 14px;
    border-radius: 16px;
  }

  .message-body img {
    width: 100%;
  }

  .modal-layer {
    padding: 12px;
  }

  .modal-card {
    width: 100%;
    padding: 18px;
    border-radius: 18px;
  }
}

@media (max-width: 460px) {
  .model-card-grid,
  .image-model-card-grid {
    grid-template-columns: 1fr;
  }

  .image-model-brand-tabs,
  .model-brand-tabs {
    width: 100%;
  }

  .model-brand-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .model-brand-tab,
  .image-model-brand-tab {
    min-width: 0;
  }

  .image-result-grid {
    grid-template-columns: 1fr;
  }

  .image-history-stat {
    padding: 12px 14px;
  }

  .hero-feature-row {
    gap: 8px;
  }

  .hero-feature {
    padding: 7px 10px;
    font-size: 0.8rem;
  }
}