/* XZZSB AI Hub 7.0 — desktop-first refinement layered over app.css */

@media (min-width: 961px) {
  .ai-layout {
    grid-template-columns: 304px minmax(0, 1fr);
  }

  .chat-sidebar {
    width: 304px;
    padding: 22px 16px 14px;
    background:
      radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 28%),
      var(--sidebar-bg);
  }

  .chat-main {
    min-width: 0;
    background:
      radial-gradient(circle at 50% 8%, color-mix(in srgb, var(--accent) 4%, transparent), transparent 32%),
      var(--bg);
  }

  .chat-topbar {
    height: 78px;
    padding: 0 28px;
    display: grid;
    grid-template-columns: minmax(220px, 1fr) minmax(280px, 420px) minmax(220px, 1fr);
    gap: 20px;
    border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(18px);
  }

  .topbar-actions {
    justify-self: end;
  }

  .message-list,
  .welcome-view {
    width: min(100%, 1040px);
  }

  .composer-zone {
    width: min(calc(100% - 56px), 1040px);
    padding-bottom: 18px;
  }
}

.model-picker {
  width: 100%;
  min-width: 0;
  height: 52px;
  padding: 6px 10px 6px 7px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto 18px;
  align-items: center;
  gap: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 92%, var(--accent) 2%);
  box-shadow: 0 8px 25px rgba(25, 42, 38, 0.05);
  text-align: left;
}

.model-picker:hover {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
  background: color-mix(in srgb, var(--panel) 95%, var(--accent) 5%);
}

.model-logo {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 65%, #5778ee));
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.model-picker-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.model-picker-copy small {
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.15;
}

.model-picker-copy strong {
  overflow: hidden;
  color: var(--text);
  font-size: 15px;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-cap {
  padding: 4px 7px;
  border-radius: 7px;
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  color: var(--accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.model-picker-toolbar {
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.model-picker-toolbar label {
  width: min(100%, 420px);
  height: 42px;
  padding: 0 13px;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-soft);
}

.model-picker-toolbar svg {
  width: 17px;
  color: var(--text-muted);
}

.model-picker-toolbar input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.model-picker-toolbar a {
  color: var(--accent);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.model-choice-grid {
  max-height: min(62vh, 620px);
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 2px;
}

.model-choice {
  min-width: 0;
  padding: 15px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto 20px;
  align-items: start;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  color: var(--text);
  text-align: left;
}

.model-choice:hover,
.model-choice.active {
  border-color: color-mix(in srgb, var(--accent) 48%, var(--line));
  background: color-mix(in srgb, var(--panel) 94%, var(--accent) 6%);
  box-shadow: 0 10px 28px rgba(25, 42, 38, 0.07);
}

.model-choice-logo {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: color-mix(in srgb, var(--accent) 11%, var(--bg-soft));
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}

.model-choice-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.model-choice-copy strong {
  font-size: 15px;
}

.model-choice-copy code,
.model-choice-copy small,
.model-choice-copy em,
.model-choice-meta small {
  overflow: hidden;
  color: var(--text-muted);
  font-size: 11px;
  font-style: normal;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-choice-copy em {
  margin-top: 4px;
  display: block;
  max-width: 320px;
}

.model-choice-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  color: var(--text-soft);
  font-size: 11px;
  white-space: nowrap;
}

.model-choice > i {
  color: var(--accent);
  font-weight: 800;
}

.model-choice.hidden {
  display: none;
}

.model-picker-empty {
  grid-column: 1 / -1;
  padding: 44px;
  text-align: center;
}

.project-label {
  margin-top: 16px;
}

.project-filter {
  max-height: 132px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.project-filter button {
  min-height: 32px;
  padding: 6px 9px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-muted);
  text-align: left;
}

.project-filter button:hover,
.project-filter button.active {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--text);
}

.project-filter button b {
  font-size: 10px;
  font-weight: 600;
}

.project-color {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
}

.project-color.blue { background: #4b82ee; }
.project-color.violet { background: #8a63d7; }
.project-color.amber { background: #d98e2f; }
.project-color.rose { background: #d75c7e; }
.project-color.slate { background: #84909f; }

.conversation-group {
  margin: 13px 8px 5px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
}

.today-usage {
  margin: 0 2px 7px;
  padding: 10px 11px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 82%, transparent);
}

.today-usage span {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.today-usage small {
  color: var(--text-muted);
  font-size: 9px;
}

.today-usage b {
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  text-overflow: ellipsis;
}

.project-manage-list {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.project-manage-row {
  padding: 10px 11px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 11px;
}

.project-manage-row span {
  display: flex;
  flex-direction: column;
}

.project-manage-row small {
  color: var(--text-muted);
}

.project-manage-row button {
  border: 0;
  background: transparent;
  color: var(--text-muted);
}

.project-manage-row button.danger { color: var(--danger); }

.suggestion-grid {
  width: min(100%, 840px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.suggestion-grid button {
  min-height: 126px;
  padding: 20px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  gap: 3px 13px;
  border-radius: 18px;
  position: relative;
  overflow: hidden;
  text-align: left;
}

.suggestion-grid button > svg {
  width: 42px;
  height: 42px;
  padding: 10px;
  grid-row: 1 / 3;
  border-radius: 13px;
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  color: var(--accent);
}

.suggestion-grid button strong {
  align-self: end;
  font-size: 15px;
}

.suggestion-grid button span {
  align-self: start;
  color: var(--text-muted);
  font-size: 12px;
}

.suggestion-grid button em {
  grid-column: 3;
  grid-row: 1 / 3;
  color: color-mix(in srgb, var(--text-muted) 34%, transparent);
  font-size: 28px;
  font-style: normal;
  font-weight: 800;
}

.suggestion-code > svg { color: #5778d9 !important; background: rgba(87, 120, 217, .09) !important; }
.suggestion-file > svg { color: #c07b31 !important; background: rgba(192, 123, 49, .09) !important; }
.suggestion-think > svg { color: #855fc0 !important; background: rgba(133, 95, 192, .09) !important; }

.composer {
  border-radius: 20px;
  border-color: color-mix(in srgb, var(--line) 86%, transparent);
  background: color-mix(in srgb, var(--panel) 96%, transparent);
  box-shadow: 0 18px 50px rgba(33, 50, 46, 0.11);
}

.composer-modebar {
  padding: 8px 10px 0;
  display: flex;
  align-items: center;
  gap: 5px;
}

.composer-modebar button {
  height: 28px;
  padding: 0 10px;
  display: flex;
  align-items: center;
  gap: 5px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
}

.composer-modebar button svg {
  width: 14px;
}

.composer-modebar button.active {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  color: var(--accent);
  font-weight: 700;
}

.composer-modebar > span {
  margin-left: auto;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(142, 96, 204, .10);
  color: #8058b6;
  font-size: 10px;
  font-weight: 700;
}

.stream-status {
  width: fit-content;
  max-width: calc(100% - 24px);
  margin: 0 auto 8px;
  padding: 7px 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 90%, var(--accent) 5%);
  color: var(--text-soft);
  font-size: 11px;
  box-shadow: 0 8px 22px rgba(25, 42, 38, .06);
}

.stream-status.danger {
  border-color: color-mix(in srgb, var(--danger) 25%, var(--line));
  color: var(--danger);
}

.upload-chip {
  max-width: 360px;
}

.upload-chip span {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.upload-chip span b,
.upload-chip span small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-chip span small {
  color: var(--text-muted);
  font-size: 9px;
}

.upload-chip.failed {
  border-color: color-mix(in srgb, var(--danger) 30%, var(--line));
}

.message-status {
  margin-top: 14px;
  padding: 9px 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 11px;
}

.message-status.interrupted {
  border: 1px solid rgba(211, 142, 52, .24);
  background: rgba(211, 142, 52, .07);
  color: #a66721;
}

.message-status.saving {
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.message-status button {
  padding: 5px 10px;
  border: 0;
  border-radius: 7px;
  background: #fff;
  color: #9a5b18;
  box-shadow: 0 2px 9px rgba(94, 65, 31, .08);
  font-weight: 700;
}

.attachment-card > span {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.attachment-card small {
  color: var(--text-muted);
  font-size: 10px;
}

.attachment-card.failed {
  border-color: color-mix(in srgb, var(--danger) 28%, var(--line));
}

.generated-media {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.generated-image img,
.generated-video {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-soft);
}
.generated-task {
  min-height: 74px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 15px;
  background: var(--panel-2);
  display: flex;
  align-items: center;
  gap: 12px;
  grid-column: 1 / -1;
}
.generated-task > span {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}
.generated-task svg { width: 18px; }
.generated-task-copy {
  min-width: 0;
  flex: 1;
}
.generated-task strong,
.generated-task small { display: block; }
.generated-task strong { font-size: 12px; }
.generated-task small { color: var(--muted); font-size: 10px; margin-top: 4px; }
.generated-task-progress {
  height: 5px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--line) 80%, transparent);
}
.generated-task-progress i {
  display: block;
  height: 100%;
  min-width: 3px;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #42c7a5);
  transition: width .25s ease;
}
.generated-task em {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  font-style: normal;
}
.generated-task > button {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 7px 10px;
  color: var(--text-soft);
  background: var(--panel);
  font-size: 11px;
}
.generated-task > button:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  color: var(--accent);
}
.generated-task.failed {
  border-color: color-mix(in srgb, var(--danger) 36%, var(--line));
}
.generated-task-error {
  margin: 7px 0 0;
  color: var(--danger);
  font-size: 11px;
}

.setting-intro {
  margin-bottom: 16px;
  padding: 13px 14px;
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-soft));
}

.setting-intro span,
.long-form-settings small {
  color: var(--text-muted);
  font-size: 11px;
}

.long-form-settings {
  margin: 16px 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-soft);
}

.long-form-settings .toggle-label > span {
  display: flex;
  flex-direction: column;
}

@media (max-width: 960px) {
  .project-label,
  .project-filter,
  .today-usage {
    display: flex;
  }

  .project-filter {
    max-height: 120px;
    flex-direction: column;
  }

  .model-picker {
    height: 43px;
    grid-template-columns: 31px minmax(0, 1fr) 16px;
    gap: 7px;
    border: 0;
    box-shadow: none;
  }

  .model-logo {
    width: 31px;
    height: 31px;
    border-radius: 10px;
    font-size: 10px;
  }

  .model-cap,
  .model-picker-copy small {
    display: none;
  }

  .model-picker-copy strong {
    font-size: 13px;
  }

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

  .model-choice-meta {
    display: none;
  }

  .model-choice {
    grid-template-columns: 40px minmax(0, 1fr) 18px;
  }

  .suggestion-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .model-picker-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .suggestion-grid {
    width: 100%;
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .suggestion-grid button {
    min-width: 238px;
    min-height: 108px;
    scroll-snap-align: start;
  }

  .composer-modebar {
    overflow-x: auto;
  }

  .composer-modebar > span {
    white-space: nowrap;
  }

  .generated-media {
    grid-template-columns: 1fr;
  }

  .project-manage-row {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .project-manage-row button.danger {
    grid-column: 2 / -1;
    justify-self: end;
  }
}

/* XZZSB AI Hub 7.3 — focused workspace, media feedback and mobile polish */
.chat-main {
  grid-template-rows: 78px minmax(0, 1fr) auto;
}

.chat-scroll {
  overscroll-behavior: contain;
}

.composer-zone {
  position: relative;
  inset: auto;
  width: min(calc(100% - 40px), 800px);
  margin: 0 auto;
  padding: 9px 0 18px;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg) 94%, transparent) 22%, var(--bg) 58%);
}

.composer {
  border-radius: 24px;
  box-shadow: 0 16px 44px rgba(30, 52, 46, .12);
}

.composer-note {
  display: none !important;
}

.welcome-view {
  min-height: 100%;
  box-sizing: border-box;
  padding: 30px 24px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.welcome-mark {
  width: 58px;
  height: 58px;
  margin-bottom: 15px;
}

.welcome-mark > span {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  font-size: 21px;
}

.welcome-view h1 {
  margin: 9px 0 8px;
  font-size: clamp(35px, 4vw, 48px);
}

.assistant-row {
  margin: 20px 0 20px;
}

.quick-start {
  width: min(100%, 760px);
}

.quick-start-head {
  margin: 0 4px 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  text-align: left;
}

.quick-start-head span {
  color: var(--text-soft);
  font-size: 11px;
  font-weight: 750;
}

.quick-start-head small {
  font-size: 10px;
}

.suggestion-grid {
  width: 100%;
  max-width: none;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.suggestion-grid button {
  min-width: 0;
  min-height: 66px;
  padding: 11px 12px;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 20px;
  grid-template-rows: auto;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: none;
  text-align: left;
}

.suggestion-grid button:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--line));
  box-shadow: 0 9px 24px rgba(30, 52, 46, .07);
}

.suggestion-grid button > svg {
  width: 36px;
  height: 36px;
  padding: 9px;
  grid-row: auto;
  border-radius: 11px;
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
  color: var(--accent);
}

.suggestion-grid button > span {
  min-width: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-self: center;
  color: inherit;
}

.suggestion-grid button strong {
  align-self: auto;
  font-size: 13px;
  line-height: 1.35;
}

.suggestion-grid button small {
  margin-top: 3px;
  overflow: hidden;
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.suggestion-grid button > b {
  color: var(--subtle);
  font-size: 15px;
  transition: transform .18s ease, color .18s ease;
}

.suggestion-grid button:hover > b {
  transform: translateX(2px);
  color: var(--accent);
}

.sidebar-expand {
  display: none;
}

.sidebar-collapse {
  width: 31px;
  height: 31px;
  flex: 0 0 auto;
  color: var(--text-muted);
}

.sidebar-collapse svg {
  width: 16px;
}

.ai-layout,
.chat-sidebar {
  transition: grid-template-columns .22s ease, width .22s ease, padding .22s ease;
}

.message-list {
  padding-bottom: 34px;
}

.message-actions {
  height: auto;
  min-height: 28px;
  opacity: .58;
}

.message:hover .message-actions,
.message-actions:focus-within {
  opacity: 1;
}

.message-content hr {
  height: 1px;
  margin: 22px 0;
  border: 0;
  background: var(--line);
}

.message-content .task-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  list-style: none;
}

.message-content .task-item input {
  margin-top: 6px;
}

.markdown-table-wrap {
  max-width: 100%;
  margin: 16px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.message-content table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  font-size: .9em;
}

.message-content th,
.message-content td {
  min-width: 110px;
  padding: 9px 11px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.message-content th {
  background: var(--panel-2);
  color: var(--text);
  font-weight: 750;
}

.message-content tr:last-child td {
  border-bottom: 0;
}

.message-content th:last-child,
.message-content td:last-child {
  border-right: 0;
}

.generated-media {
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

.generated-image {
  position: relative;
  min-width: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 15px;
  background: var(--bg-soft);
  cursor: zoom-in;
}

.generated-image img {
  display: block;
  transition: transform .28s ease, filter .28s ease;
}

.generated-image > span {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 7px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 999px;
  background: rgba(10, 15, 20, .62);
  color: white;
  font-size: 10px;
  opacity: 0;
  transform: translateY(4px);
  backdrop-filter: blur(12px);
  transition: .2s ease;
}

.generated-image > span svg {
  width: 14px;
}

.generated-image:hover img {
  transform: scale(1.012);
  filter: brightness(.94);
}

.generated-image:hover > span,
.generated-image:focus-visible > span {
  opacity: 1;
  transform: none;
}

.media-generation-card {
  margin-top: 6px;
  min-height: 164px;
  padding: 14px;
  display: grid;
  grid-template-columns: 154px minmax(0, 1fr);
  align-items: stretch;
  gap: 18px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
  border-radius: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--panel) 95%, var(--accent) 5%), var(--panel));
  box-shadow: 0 16px 38px rgba(31, 61, 52, .08);
}

.generation-preview {
  position: relative;
  min-height: 134px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 15px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 24%, #15231f), #152b31);
}

.media-generation-card.video .generation-preview {
  background: linear-gradient(135deg, #18213a, color-mix(in srgb, var(--accent) 38%, #111927));
}

.generation-preview > span {
  position: relative;
  z-index: 3;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 15px;
  background: rgba(255,255,255,.13);
  color: white;
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
  backdrop-filter: blur(12px);
  animation: generation-float 2.4s ease-in-out infinite;
}

.generation-preview > span svg {
  width: 21px;
}

.generation-orb {
  position: absolute;
  width: 106px;
  height: 106px;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 38% 62% 58% 42%;
  animation: generation-orbit 5s linear infinite;
}

.generation-orb::before,
.generation-orb::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.58);
  filter: blur(1px);
}

.generation-orb::before { width: 7px; height: 7px; left: 4px; top: 24px; }
.generation-orb::after { width: 4px; height: 4px; right: 9px; bottom: 16px; }

.generation-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, transparent, black 25%, black 75%, transparent);
  animation: generation-grid 4s linear infinite;
}

.generation-copy {
  min-width: 0;
  padding: 8px 8px 5px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

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

.generation-title > span {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.generation-title i {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 12%, transparent);
  animation: generation-pulse 1.4s ease-in-out infinite;
}

.generation-title strong {
  overflow: hidden;
  color: var(--text);
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.generation-title > b {
  color: var(--accent);
  font-size: 12px;
  white-space: nowrap;
}

.generation-copy > p {
  margin: 7px 0 9px;
  color: var(--text-muted);
  font-size: 11px;
}

.generation-live {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--subtle);
  font-size: 9px;
}

.generation-live > span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
  font-weight: 650;
}

.generation-live > span:first-child i {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent);
}

.generation-live > button {
  margin-left: auto;
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  cursor: pointer;
}

.generation-live > button:hover {
  border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
  color: var(--danger);
}

.generation-live > button:disabled {
  cursor: wait;
  opacity: .58;
}

.media-generation-card.connection-retrying,
.media-generation-card.connection-recovering,
.media-generation-card.connection-waiting {
  border-color: color-mix(in srgb, #d89435 34%, var(--line));
}

.media-generation-card.connection-retrying .generation-live > span:first-child i,
.media-generation-card.connection-recovering .generation-live > span:first-child i,
.media-generation-card.connection-waiting .generation-live > span:first-child i {
  background: #d89435;
  box-shadow: 0 0 0 3px color-mix(in srgb, #d89435 15%, transparent);
}

.media-generation-card.connection-stale,
.media-generation-card.connection-stopping {
  border-color: color-mix(in srgb, var(--danger) 30%, var(--line));
}

.media-generation-card.connection-stale .generation-live > span:first-child i,
.media-generation-card.connection-stopping .generation-live > span:first-child i {
  background: var(--danger);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 13%, transparent);
}

.generation-progress {
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--line) 80%, transparent);
}

.generation-progress > i {
  position: relative;
  display: block;
  height: 100%;
  overflow: hidden;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #4fc4a6, var(--accent));
  background-size: 200% 100%;
  transition: width .65s ease;
  animation: generation-shimmer 2s linear infinite;
}

.generation-steps {
  margin-top: 11px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.generation-steps span {
  color: var(--subtle);
  font-size: 9px;
  white-space: nowrap;
}

.generation-steps span.active {
  color: var(--accent);
  font-weight: 700;
}

.stream-status::before {
  content: "";
  width: 6px;
  height: 6px;
  display: inline-block;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: generation-pulse 1.4s ease-in-out infinite;
}

.media-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  padding: 64px 28px 82px;
  display: grid;
  place-items: center;
  background: rgba(7, 11, 16, .86);
  opacity: 0;
  visibility: hidden;
  backdrop-filter: blur(16px);
  transition: opacity .2s ease, visibility .2s ease;
}

.media-lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-stage {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
}

.lightbox-stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 24px 100px rgba(0,0,0,.45);
  transform: scale(.985);
  transition: transform .22s ease;
}

.media-lightbox.open .lightbox-stage img {
  transform: none;
}

.lightbox-close {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: 20px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 13px;
  background: rgba(255,255,255,.1);
  color: white;
  font-size: 25px;
  cursor: pointer;
}

.lightbox-actions {
  position: absolute;
  bottom: max(18px, env(safe-area-inset-bottom));
  left: 50%;
  display: flex;
  gap: 8px;
  transform: translateX(-50%);
}

.lightbox-actions .button {
  display: flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.lightbox-actions .button.ghost {
  border-color: rgba(255,255,255,.18);
  background: rgba(255,255,255,.1);
  color: white;
}

.lightbox-actions svg {
  width: 15px;
}

.share-dialog-panel .page-loading {
  min-height: 180px;
}

.share-dialog-intro {
  padding: 18px;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel-2);
}

.share-dialog-intro > span {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: color-mix(in srgb, var(--accent) 12%, var(--panel));
  color: var(--accent);
}

.share-dialog-intro > span svg {
  width: 20px;
}

.share-dialog-intro strong,
.share-state strong {
  color: var(--text);
  font-size: 14px;
}

.share-dialog-intro p {
  margin: 5px 0 0;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.65;
}

.share-dialog-actions {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.share-dialog-actions .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.share-dialog-actions svg {
  width: 15px;
}

.share-dialog-actions .danger {
  color: var(--danger);
}

.share-state {
  margin-bottom: 15px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}

.share-state > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--success) 12%, var(--panel));
  color: var(--success);
  font-weight: 900;
}

.share-state > div {
  display: flex;
  flex-direction: column;
}

.share-state small {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 10px;
}

.share-dialog-active > label {
  color: var(--text-soft);
  font-size: 11px;
  font-weight: 700;
}

.share-url-field {
  height: 44px;
  margin-top: 7px;
  display: flex;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--input-bg);
}

.share-url-field input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text-soft);
  padding: 0 12px;
  font-size: 12px;
}

.share-url-field button {
  margin: 5px;
  padding: 0 10px;
  display: flex;
  align-items: center;
  gap: 5px;
  border: 0;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}

.share-url-field svg {
  width: 14px;
}

@keyframes generation-float {
  0%, 100% { transform: translateY(-2px) rotate(-2deg); }
  50% { transform: translateY(3px) rotate(2deg); }
}

@keyframes generation-orbit {
  to { transform: rotate(360deg); }
}

@keyframes generation-grid {
  to { background-position: 22px 22px; }
}

@keyframes generation-pulse {
  0%, 100% { opacity: .55; transform: scale(.9); }
  50% { opacity: 1; transform: scale(1.08); }
}

@keyframes generation-shimmer {
  to { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .generation-preview > span,
  .generation-orb,
  .generation-grid,
  .generation-title i,
  .generation-progress > i,
  .stream-status::before {
    animation: none;
  }
}

@media (min-width: 961px) {
  .ai-layout.sidebar-collapsed {
    grid-template-columns: 76px minmax(0, 1fr);
  }

  .ai-layout.sidebar-collapsed .chat-sidebar {
    width: 76px;
    padding: 20px 10px 12px;
  }

  .ai-layout.sidebar-collapsed .sidebar-header {
    padding: 0;
    justify-content: center;
  }

  .ai-layout.sidebar-collapsed .app-brand > div,
  .ai-layout.sidebar-collapsed .sidebar-collapse,
  .ai-layout.sidebar-collapsed .new-chat-label,
  .ai-layout.sidebar-collapsed .new-chat-button kbd,
  .ai-layout.sidebar-collapsed .conversation-search,
  .ai-layout.sidebar-collapsed .conversation-label,
  .ai-layout.sidebar-collapsed .project-filter,
  .ai-layout.sidebar-collapsed .conversation-list,
  .ai-layout.sidebar-collapsed .today-usage,
  .ai-layout.sidebar-collapsed .sidebar-footer span:not(.user-avatar),
  .ai-layout.sidebar-collapsed .sidebar-footer > button > svg {
    display: none;
  }

  .ai-layout.sidebar-collapsed .new-chat-button {
    width: 46px;
    height: 46px;
    margin: 14px auto;
    padding: 0;
    justify-content: center;
  }

  .ai-layout.sidebar-collapsed .new-chat-plus {
    font-size: 24px;
  }

  .ai-layout.sidebar-collapsed .sidebar-footer {
    margin-top: auto;
    padding-top: 10px;
  }

  .ai-layout.sidebar-collapsed .sidebar-footer > a,
  .ai-layout.sidebar-collapsed .sidebar-footer > button {
    width: 46px;
    margin: 2px auto;
    padding: 0;
    justify-content: center;
  }

  .ai-layout.sidebar-collapsed .sidebar-footer > button {
    height: 46px;
  }

  .ai-layout.sidebar-collapsed .sidebar-expand {
    display: grid;
  }
}

@media (max-width: 960px) {
  .chat-main {
    grid-template-rows: 58px minmax(0, 1fr) auto;
  }

  .sidebar-collapse {
    display: none;
  }

  .sidebar-expand {
    display: grid;
  }

  .chat-topbar {
    height: 58px;
    padding: 0 9px;
  }

  .topbar-actions #share-export {
    display: grid;
  }

  .composer-zone {
    width: calc(100% - 16px);
    padding: 7px 0 max(8px, env(safe-area-inset-bottom));
  }

  .message-list {
    padding-bottom: 20px;
  }

  .welcome-view {
    padding-top: 26px;
    padding-bottom: 22px;
  }
}

@media (max-width: 640px) {
  .chat-topbar {
    grid-template-columns: minmax(72px, 1fr) minmax(108px, 156px) minmax(72px, 1fr);
    gap: 4px;
  }

  .topbar-left {
    min-width: 0;
    gap: 2px;
  }

  .conversation-title-button {
    max-width: 92px;
    padding: 0 4px;
    font-size: 12px;
  }

  .topbar-actions {
    gap: 0;
  }

  .topbar-actions .appearance-button {
    min-width: 36px;
    padding: 0 8px;
    border: 0;
    background: transparent;
  }

  .topbar-actions .appearance-button b {
    display: none;
  }

  .topbar-actions .icon-button {
    width: 34px;
    height: 34px;
  }

  .model-picker {
    padding: 4px;
  }

  .welcome-view {
    min-height: auto;
    padding: 25px 12px 20px;
  }

  .welcome-mark {
    width: 50px;
    height: 50px;
    margin-bottom: 11px;
  }

  .welcome-mark > span {
    width: 43px;
    height: 43px;
    border-radius: 14px;
    font-size: 19px;
  }

  .welcome-view h1 {
    margin-top: 7px;
    font-size: 31px;
  }

  .welcome-view > p:not(.eyebrow) {
    font-size: 12px;
  }

  .assistant-row {
    width: 100%;
    margin: 16px 0 17px;
    padding: 0;
  }

  .quick-start-head {
    margin-bottom: 7px;
  }

  .suggestion-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    overflow: visible;
  }

  .suggestion-grid button {
    min-width: 0;
    min-height: 88px;
    padding: 11px;
    grid-template-columns: 30px minmax(0, 1fr);
    grid-template-rows: auto;
    gap: 8px;
    scroll-snap-align: none;
  }

  .suggestion-grid button > svg {
    width: 30px;
    height: 30px;
    padding: 7px;
  }

  .suggestion-grid button strong {
    font-size: 12px;
  }

  .suggestion-grid button small {
    display: -webkit-box;
    overflow: hidden;
    white-space: normal;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .suggestion-grid button > b,
  .quick-start-head small {
    display: none;
  }

  .composer {
    border-radius: 22px;
  }

  .composer-modebar {
    padding: 7px 8px 0;
    scrollbar-width: none;
  }

  .composer-modebar::-webkit-scrollbar {
    display: none;
  }

  .composer-modebar button {
    flex: 0 0 auto;
  }

  .composer-main {
    min-height: 54px;
    padding: 7px;
  }

  .composer-tool,
  .send-button,
  .stop-button {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }

  .composer textarea {
    min-height: 40px;
    padding: 9px 6px;
  }

  .message-list {
    padding: 22px 10px 14px;
  }

  .message {
    margin-bottom: 24px;
  }

  .message.assistant {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .message.user .message-body {
    max-width: 90%;
  }

  .message-actions {
    max-width: 100%;
    overflow-x: auto;
    opacity: 1;
    scrollbar-width: none;
  }

  .message-actions::-webkit-scrollbar {
    display: none;
  }

  .message-meta {
    white-space: nowrap;
  }

  .code-block {
    margin: 12px -2px;
  }

  .code-block pre {
    padding: 12px;
  }

  .code-block code {
    font-size: 11px;
  }

  .generated-media {
    grid-template-columns: 1fr;
  }

  .generated-image > span {
    opacity: 1;
    transform: none;
  }

  .media-generation-card {
    min-height: 126px;
    padding: 10px;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 11px;
    border-radius: 17px;
  }

  .generation-preview {
    min-height: 106px;
    border-radius: 13px;
  }

  .generation-preview > span {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .generation-orb {
    width: 76px;
    height: 76px;
  }

  .generation-copy {
    padding: 3px 2px 3px 0;
  }

  .generation-title strong {
    font-size: 12px;
  }

  .generation-copy > p {
    margin: 5px 0 10px;
    font-size: 10px;
    line-height: 1.45;
  }

  .generation-live {
    margin-bottom: 7px;
    gap: 5px;
  }

  .generation-live > span:nth-child(2) {
    display: none;
  }

  .generation-live > button {
    padding: 3px 6px;
  }

  .generation-steps {
    grid-template-columns: 1fr 1fr;
    row-gap: 3px;
  }

  .media-lightbox {
    padding: 58px 8px 82px;
  }

  .lightbox-close {
    right: 12px;
  }

  .lightbox-actions {
    width: calc(100% - 20px);
  }

  .lightbox-actions .button {
    flex: 1;
    justify-content: center;
    padding: 10px 8px;
    font-size: 11px;
  }

  .share-dialog-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .share-dialog-actions .button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .conversation-title-button span,
  #chat-settings {
    display: none;
  }

  .chat-topbar {
    grid-template-columns: 68px minmax(100px, 1fr) 72px;
  }

  .suggestion-grid {
    grid-template-columns: 1fr;
  }

  .suggestion-grid button {
    min-height: 64px;
  }
}

/* XZZSB AI Hub 7.4 — compact topbar, integrated settings and live reasoning */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.chat-topbar {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 520px) minmax(0, 1fr);
  gap: 14px;
}

.topbar-history,
.topbar-model,
.topbar-actions {
  min-width: 0;
  display: flex;
  align-items: center;
}

.topbar-model {
  width: 100%;
  justify-self: center;
}

.topbar-actions {
  justify-self: end;
}

.history-button {
  height: 38px;
  padding: 0 11px;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel);
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.history-button svg {
  width: 17px;
}

.topbar-settings {
  width: auto;
  min-width: 42px;
  padding: 0 11px;
  display: flex;
  gap: 6px;
}

.topbar-settings > span {
  font-size: 11px;
  font-weight: 700;
}

.topbar-model .model-picker {
  width: 100%;
  max-width: 520px;
}

.topbar-model .model-picker-copy,
.topbar-model .model-picker-copy strong {
  min-width: 0;
  max-width: 100%;
}

.settings-section {
  margin: 0 0 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel) 93%, var(--accent) 2%);
}

.settings-section-head {
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.settings-section-head strong {
  color: var(--text);
  font-size: 13px;
}

.settings-section-head small {
  color: var(--text-muted);
  font-size: 10px;
  text-align: right;
}

.feature-toggle {
  align-items: flex-start;
  padding: 11px;
  border-radius: 11px;
  background: var(--bg-soft);
}

.feature-toggle + .feature-toggle {
  margin-top: 8px;
}

.feature-toggle input {
  flex: 0 0 auto;
  margin-top: 2px !important;
}

.feature-toggle span {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.feature-toggle strong {
  color: var(--text);
  font-size: 12px;
}

.feature-toggle small {
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.55;
}

.reasoning-box {
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 19%, var(--line));
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 95%, var(--accent) 3%);
}

.reasoning-box summary {
  min-height: 38px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-soft);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.reasoning-box summary i {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 12%, transparent);
  animation: generation-pulse 1.5s ease-in-out infinite;
}

.reasoning-content {
  max-height: 280px;
  padding: 0 12px 12px;
  overflow: auto;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.7;
}

@media (max-width: 960px) {
  .chat-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 7px;
  }

  .history-button.sidebar-expand {
    display: flex;
  }

  #conversation-actions {
    display: grid !important;
  }

  .topbar-model .model-picker {
    height: 44px;
    grid-template-columns: 32px minmax(0, 1fr) 14px;
    gap: 7px;
    border-radius: 13px;
  }

  .topbar-model .model-logo {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    font-size: 10px;
  }

  .topbar-model .model-cap {
    display: none;
  }

  .topbar-model .model-picker-copy small {
    display: none;
  }

  .topbar-model .model-picker-copy strong {
    font-size: 12px;
  }
}

@media (max-width: 640px) {
  .chat-topbar {
    padding: 0 7px;
  }

  .history-button {
    height: 36px;
    padding: 0 8px;
  }

  .history-button span {
    font-size: 11px;
  }

  .topbar-actions {
    gap: 1px;
  }

  .topbar-settings {
    width: 34px;
    min-width: 34px;
    padding: 0;
  }

  .topbar-settings > span {
    display: none;
  }

  .settings-section {
    padding: 12px;
  }

  .settings-section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .settings-section-head small {
    text-align: left;
  }
}

@media (max-width: 400px) {
  #chat-settings {
    display: flex !important;
  }

  .history-button span {
    display: none;
  }

  .history-button {
    width: 34px;
    padding: 0;
    justify-content: center;
  }

  .topbar-model .model-picker {
    grid-template-columns: minmax(0, 1fr) 14px;
    padding-left: 9px;
  }

  .topbar-model .model-logo {
    display: none;
  }
}