:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-solid: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --muted-strong: #4b5563;
  --line: rgba(17, 24, 39, 0.1);
  --line-soft: rgba(17, 24, 39, 0.06);
  --accent: #00a884;
  --accent-strong: #007a65;
  --accent-cool: #4f46e5;
  --accent-warm: #ff8a4c;
  --left: rgba(255, 255, 255, 0.96);
  --right: #d9fdd3;
  --hover: rgba(15, 23, 42, 0.07);
  --active: rgba(0, 168, 132, 0.15);
  --shadow: 0 18px 46px rgba(15, 23, 42, 0.14);
  --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.1);
  --ime-bottom: 0px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  font-family:
    Inter, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background:
    linear-gradient(135deg, #f8fbff 0%, #f1fbf6 43%, #fff8ef 100%);
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.project-list,
.conversation,
.settings-panel {
  scrollbar-width: thin;
  scrollbar-color: rgba(27, 111, 104, 0.35) transparent;
}

.project-list::-webkit-scrollbar,
.conversation::-webkit-scrollbar,
.settings-panel::-webkit-scrollbar {
  width: 8px;
}

.project-list::-webkit-scrollbar-track,
.conversation::-webkit-scrollbar-track,
.settings-panel::-webkit-scrollbar-track {
  background: transparent;
}

.project-list::-webkit-scrollbar-thumb,
.conversation::-webkit-scrollbar-thumb,
.settings-panel::-webkit-scrollbar-thumb {
  background: rgba(27, 111, 104, 0.28);
  border: 2px solid transparent;
  border-radius: 999px;
  background-clip: content-box;
}

.project-list::-webkit-scrollbar-thumb:hover,
.conversation::-webkit-scrollbar-thumb:hover,
.settings-panel::-webkit-scrollbar-thumb:hover {
  background: rgba(27, 111, 104, 0.44);
  border: 2px solid transparent;
  background-clip: content-box;
}

.app-shell {
  display: grid;
  grid-template-columns: 318px minmax(0, 1fr);
  height: var(--app-height, 100dvh);
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(79, 70, 229, 0.06), transparent 36%),
    linear-gradient(300deg, rgba(255, 138, 76, 0.08), transparent 40%);
}

.sidebar {
  position: relative;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 250, 252, 0.9));
  backdrop-filter: blur(14px);
  min-height: 0;
  padding: 16px 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.72);
}

.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 10px;
  padding: 2px 4px 0;
}

.settings-button {
  width: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 2px 4px 4px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent), var(--accent-cool));
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(0, 168, 132, 0.25);
}

.brand h1,
.brand p,
.workspace-header h2,
.workspace-header p,
.empty-state h3,
.empty-state p {
  margin: 0;
}

.brand h1 {
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: 0;
}

.brand-title-row {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.app-version {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  opacity: 0.68;
  white-space: nowrap;
}

.brand p,
.eyebrow,
.project-list-header,
.empty-state p,
.language-pair,
.original-text {
  color: var(--muted);
}
.primary-button,
.ghost-button {
  min-height: 42px;
  border: 0;
  border-radius: 12px;
  padding: 8px 16px;
  cursor: pointer;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  max-width: 100%;
  height: auto;
  line-height: 1.18;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition:
    transform 150ms ease,
    box-shadow 150ms ease,
    background 150ms ease,
    color 150ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #fff;
  box-shadow: 0 12px 26px rgba(0, 168, 132, 0.22);
}

.primary-button:hover {
  background: linear-gradient(135deg, #006b5a, #00b995);
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(0, 168, 132, 0.28);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
  transform: none;
  box-shadow: none;
}

.ghost-button {
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.ghost-button:hover {
  background: #fff;
  transform: translateY(-1px);
}
.api-status {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  padding: 9px 11px;
  margin: 0 4px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}

.api-status.connected {
  border-color: rgba(0, 168, 132, 0.22);
  background: rgba(223, 253, 211, 0.82);
  color: var(--accent-strong);
}

.api-status.mock {
  border-color: rgba(255, 138, 76, 0.26);
  background: rgba(255, 248, 239, 0.9);
  color: #8a4a18;
}

.api-status.translating {
  border-color: rgba(14, 116, 144, 0.22);
  background: rgba(236, 254, 255, 0.9);
  color: #0e7490;
}

.api-status.error {
  border-color: rgba(220, 38, 38, 0.18);
  background: rgba(255, 241, 242, 0.9);
  color: #a12424;
}
.token-usage {
  margin: -5px 6px 2px;
  color: rgba(75, 85, 99, 0.72);
  font-size: 11px;
  line-height: 1.35;
}

.project-list-header {
  padding: 4px 10px 0;
  font-size: 13px;
  font-weight: 900;
  color: var(--ink);
}

.project-list {
  min-height: 0;
  overflow: auto;
  padding: 0 4px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.project-list-empty {
  padding: 12px 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.archive-folder {
  display: grid;
  gap: 5px;
  padding: 3px 4px 8px;
}

.archive-folder[hidden] {
  display: none !important;
}

.archive-folder-button {
  width: 100%;
  min-height: 36px;
  border: 1px solid rgba(17, 24, 39, 0.07);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--muted-strong);
  cursor: pointer;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  font-size: 13px;
  font-weight: 850;
  text-align: left;
}

.archive-folder-button:hover,
.archive-folder-button.open {
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.archive-folder-icon {
  position: relative;
  width: 17px;
  height: 13px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
  opacity: 0.78;
}

.archive-folder-icon::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 1px;
  width: 8px;
  height: 5px;
  border: 1.5px solid currentColor;
  border-bottom: 0;
  border-radius: 3px 3px 0 0;
  background: inherit;
}

.archive-project-count {
  min-width: 22px;
  border-radius: 999px;
  background: rgba(0, 168, 132, 0.10);
  color: var(--accent-strong);
  padding: 2px 7px;
  font-size: 11px;
  line-height: 1.2;
  text-align: center;
}

.archive-project-list {
  display: flex;
  max-height: 220px;
  overflow: auto;
  flex-direction: column;
  gap: 2px;
}

.archive-project-list.hidden {
  display: none;
}

.archive-project-list .project-item.archived {
  opacity: 0.84;
}

.project-item {
  position: relative;
  width: 100%;
  border: 0;
  border-radius: 13px;
  background: transparent;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px;
  align-items: center;
  gap: 2px;
  isolation: isolate;
  transition: background 160ms ease, transform 150ms ease, box-shadow 180ms ease;
}

.project-item::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 46px;
  bottom: 0;
  height: 1px;
  background: var(--line-soft);
  pointer-events: none;
  transition: opacity 160ms ease, left 160ms ease, right 160ms ease;
}

.project-item:hover {
  background: var(--hover);
}

.project-item.active {
  background: linear-gradient(135deg, rgba(0, 168, 132, 0.14), rgba(79, 70, 229, 0.07));
  box-shadow: inset 0 0 0 1px rgba(0, 168, 132, 0.16);
}

.project-item.is-pressing {
  transform: scale(0.988);
  background: rgba(17, 24, 39, 0.055);
}

.project-item.actions-open {
  transform: scale(0.994);
  background: rgba(255, 255, 255, 0.94);
  box-shadow:
    0 0 0 1px rgba(0, 168, 132, 0.18),
    0 10px 24px rgba(15, 23, 42, 0.12);
}

.project-item.active::after,
.project-item:hover::after {
  opacity: 0;
}

.project-item.archived {
  opacity: 0.62;
}

.project-open-button {
  min-width: 0;
  border: 0;
  border-radius: 13px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 9px 6px 10px 10px;
  text-align: left;
  display: grid;
  gap: 4px;
}

.project-title-row,
.project-meta-row {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-title-row {
  justify-content: space-between;
}

.project-item strong {
  min-width: 0;
  display: block;
  overflow: hidden;
  color: var(--ink);
  font-size: 15px;
  font-weight: 850;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-activity-time {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
}

.project-meta-row {
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.25;
}

.project-language-pair {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: clip;
  white-space: normal;
  overflow-wrap: anywhere;
}

.project-pin {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, #9ca3af, #c7ccd4);
  transform: rotate(45deg);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.82);
}

.project-menu-button {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
}

.project-menu-button:hover {
  background: rgba(255, 255, 255, 0.74);
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}

.project-menu {
  position: fixed;
  z-index: 3000;
  display: grid;
  gap: 2px;
  width: max-content;
  min-width: 136px;
  max-width: 180px;
  border: 1px solid rgba(17, 24, 39, 0.09);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  padding: 6px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.2;
}

.project-menu-action {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 35px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  padding: 8px 10px;
  text-align: left;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-menu-action:hover {
  background: rgba(0, 168, 132, 0.09);
}

.project-menu-action.danger {
  color: #b4232a;
}

.project-menu-action.danger:hover {
  background: rgba(220, 38, 38, 0.08);
}
.workspace {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 16% 10%, rgba(0, 168, 132, 0.12), transparent 26%),
    radial-gradient(circle at 88% 0%, rgba(255, 168, 92, 0.13), transparent 24%),
    linear-gradient(135deg, rgba(247, 252, 249, 0.86), rgba(255, 249, 239, 0.72));
}

.workspace-header {
  min-height: 68px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.58);
  padding: 12px clamp(18px, 3vw, 34px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.84));
  backdrop-filter: blur(14px) saturate(1.03);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.06);
}

.workspace-header h2 {
  max-width: min(56vw, 680px);
  overflow: hidden;
  font-size: 22px;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.eyebrow {
  font-size: 12px;
  font-weight: 800;
}

.language-pair {
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--muted-strong);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 9px 14px;
  max-width: min(56vw, 680px);
  line-height: 1.15;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}

.language-pair:hover {
  color: var(--ink);
  border-color: rgba(0, 168, 132, 0.24);
  background: rgba(255, 255, 255, 0.98);
}

.empty-state {
  max-width: 520px;
  margin: auto;
  padding: 32px;
  text-align: center;
}

.empty-state h3 {
  font-size: 28px;
  margin-bottom: 10px;
}

.empty-state p {
  line-height: 1.7;
  margin-bottom: 22px;
}

.chat-area {
  min-height: 0;
  flex: 1;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

.conversation {
  position: relative;
  overflow: auto;
  min-height: 0;
  padding: 22px clamp(18px, 3vw, 42px);
  display: flex;
  flex-direction: column;
  gap: 9px;
  background:
    radial-gradient(circle at 22px 18px, rgba(214, 187, 145, 0.16) 0 2px, transparent 2.5px),
    radial-gradient(circle at 78px 48px, rgba(0, 168, 132, 0.09) 0 2px, transparent 2.5px),
    linear-gradient(45deg, transparent 0 47%, rgba(214, 187, 145, 0.10) 48% 52%, transparent 53% 100%),
    linear-gradient(135deg, rgba(252, 247, 238, 0.95), rgba(242, 251, 247, 0.92) 46%, rgba(255, 250, 241, 0.96));
  background-size: 112px 112px, 128px 128px, 38px 38px, auto;
  background-attachment: local;
}

.conversation::before {
  content: "";
  position: sticky;
  top: -22px;
  z-index: 0;
  display: block;
  height: 0;
  pointer-events: none;
  box-shadow: 0 18px 36px 24px rgba(252, 247, 238, 0.45);
}

.message-row {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100%;
}

.message-row.menu-open {
  z-index: 80;
}

.message-row.left {
  justify-content: flex-start;
}

.message-row.right {
  justify-content: flex-end;
}

.message-row.system {
  justify-content: center;
  margin: 5px 0;
}

.system-notice {
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: 999px;
  padding: 5px 12px;
  color: rgba(75, 85, 99, 0.76);
  font-size: 12px;
  line-height: 1.35;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(14px) saturate(1.06);
}

.bubble {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: 18px;
  padding: 8px 11px 6px;
  width: fit-content;
  min-width: 68px;
  max-width: min(500px, 62%);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.86));
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.74) inset,
    0 10px 26px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(18px) saturate(1.08);
}

.bubble::after {
  content: "";
  position: absolute;
  bottom: -1px;
  width: 12px;
  height: 12px;
  background: inherit;
  border-bottom: inherit;
}

.bubble.left {
  border-bottom-left-radius: 6px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(250, 252, 250, 0.88));
}

.bubble.left::after {
  left: -4px;
  border-left: inherit;
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.bubble.right {
  background:
    linear-gradient(145deg, rgba(230, 255, 220, 0.92), rgba(196, 246, 211, 0.84));
  border-color: rgba(0, 168, 132, 0.22);
  border-bottom-right-radius: 6px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.62) inset,
    0 10px 24px rgba(0, 112, 92, 0.11);
}

.bubble.right::after {
  right: -4px;
  border-right: inherit;
  clip-path: polygon(0 0, 0 100%, 100% 100%);
}

.bubble-text {
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.original-text {
  margin-top: 7px;
  border-top: 1px solid rgba(17, 24, 39, 0.08);
  padding-top: 6px;
  color: rgba(75, 85, 99, 0.82);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-meta {
  margin-top: 4px;
  color: rgba(75, 85, 99, 0.78);
  font-size: 11px;
  line-height: 1.2;
  text-align: right;
}

.composer {
  border-top: 1px solid rgba(255, 255, 255, 0.58);
  padding: 12px clamp(18px, 3vw, 42px) 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.96));
  backdrop-filter: blur(14px) saturate(1.03);
  display: grid;
  gap: 8px;
  box-shadow: 0 -16px 36px rgba(15, 23, 42, 0.06);
}

.composer-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
}

.composer-row strong {
  color: var(--accent-strong);
}

.detected-language-toggle {
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-strong);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  line-height: 1.2;
  padding: 3px 5px;
  min-width: 0;
  max-width: 100%;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detected-language-toggle:not(:disabled):hover,
.detected-language-toggle.manual {
  background: rgba(0, 168, 132, 0.09);
}

.detected-language-toggle:disabled {
  cursor: default;
  opacity: 0.72;
}

.translate-button {
  justify-self: end;
}
select,
input,
textarea {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  outline: none;
  transition:
    border-color 150ms ease,
    box-shadow 150ms ease,
    background 150ms ease;
}

select:focus,
input:focus,
textarea:focus {
  border-color: rgba(0, 168, 132, 0.48);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(0, 168, 132, 0.12);
}

select,
input {
  min-height: 40px;
  padding: 0 11px;
}

textarea {
  width: 100%;
  resize: none;
  min-height: 76px;
  max-height: 120px;
  padding: 12px 14px;
  line-height: 1.6;
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}
.project-dialog,
.settings-dialog {
  width: min(520px, calc(100vw - 32px));
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 18px;
  padding: 0;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.settings-dialog {
  width: min(900px, calc(100vw - 32px));
  height: min(720px, calc(100dvh - 32px));
  max-height: min(720px, calc(100dvh - 32px));
}

.project-dialog::backdrop,
.settings-dialog::backdrop {
  background: rgba(15, 23, 42, 0.32);
  backdrop-filter: blur(8px);
}

.project-dialog form,
.settings-dialog form {
  min-height: 0;
  max-height: calc(100dvh - 32px);
  padding: 18px;
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 14px;
  overflow: hidden;
}

.project-dialog h2,
.settings-dialog h2,
.settings-header p {
  margin: 0;
}

.project-dialog label,
.settings-dialog label {
  display: grid;
  gap: 8px;
  font-weight: 800;
}

.settings-dialog form {
  height: 100%;
}

.settings-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.settings-header p {
  color: var(--muted);
  margin-top: 4px;
}

.ui-language-field {
  width: min(220px, 34vw);
  margin-left: auto;
  color: var(--muted-strong);
  font-size: 12px;
}

.ui-language-field select {
  min-height: 38px;
  border-radius: 12px;
  padding: 0 10px;
  background: rgba(255, 255, 255, 0.9);
}

.icon-button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-soft);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.icon-button:hover {
  background: #fff;
}

.secret-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  gap: 8px;
}

.secret-input input {
  width: 100%;
}

.secret-toggle {
  font-size: 15px;
}

.settings-tabs {
  display: grid;
  grid-column: 1;
  grid-row: 2 / 5;
  align-self: stretch;
  align-content: start;
  grid-template-columns: 1fr;
  gap: 5px;
  min-height: 0;
  padding: 6px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(248, 250, 252, 0.86);
}

.settings-tab {
  min-height: 40px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-weight: 850;
  text-align: left;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: auto;
  line-height: 1.18;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.text-fit-sm {
  font-size: 0.92em !important;
}

.text-fit-xs {
  font-size: 0.82em !important;
}

.text-fit-xxs {
  font-size: 0.74em !important;
}

.settings-tab:hover {
  background: rgba(0, 168, 132, 0.07);
}

.settings-tab.active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.07);
}

.settings-panel {
  grid-column: 2;
  grid-row: 2;
  min-height: 0;
  height: 100%;
  overflow: auto;
  align-content: start;
  padding-right: 4px;
  display: none;
  gap: 14px;
}

.settings-panel.active {
  display: grid;
}

.model-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 10px;
}

.file-save-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.checkbox-row {
  display: flex !important;
  align-items: center;
  gap: 10px !important;
}

.checkbox-row input {
  width: 18px;
  height: 18px;
}

.settings-hint {
  margin: -4px 0 0;
  color: rgba(75, 85, 99, 0.72);
  font-size: 12px;
  line-height: 1.45;
}

.api-dialog-status {
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(248, 250, 252, 0.82);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  padding: 12px;
}

#settingsStatus {
  grid-column: 2;
  grid-row: 3;
}

.language-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.language-field {
  align-content: start;
}

.custom-language-input {
  margin-top: 8px;
}

#projectLanguageReviewStatus {
  grid-column: 1 / -1;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.project-dialog .dialog-actions {
  grid-column: 1 / -1;
  align-items: center;
}

.project-dialog .dialog-actions button {
  flex: 0 0 auto;
  width: auto;
  min-width: 64px;
  height: auto;
  min-height: 44px;
  padding-block: 8px;
}

.settings-dialog .dialog-actions {
  grid-column: 2;
  grid-row: 4;
}
.hidden {
  display: none;
}

@media (max-width: 820px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    max-height: 42dvh;
  }

  .workspace-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 20px;
  }

  .conversation,
  .composer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .bubble {
    max-width: 88%;
  }

  .settings-tabs,
  .file-save-row {
    grid-template-columns: 1fr;
  }

  .settings-dialog form {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  }

  .settings-tabs,
  .settings-panel,
  #settingsStatus,
  .settings-dialog .dialog-actions {
    grid-column: 1;
    grid-row: auto;
  }
}


.message-row.pinned .bubble {
  box-shadow:
    0 0 0 1px rgba(0, 168, 132, 0.22),
    0 12px 28px rgba(0, 168, 132, 0.12);
}

.bubble.pinned::before {
  content: "置顶";
  position: absolute;
  top: -10px;
  right: 16px;
  z-index: 2;
  border-radius: 999px;
  background: rgba(0, 168, 132, 0.92);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  padding: 4px 7px;
  box-shadow: 0 8px 16px rgba(0, 168, 132, 0.2);
}

.message-actions {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 5;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease;
}

.bubble:hover .message-actions,
.message-actions:focus-within {
  opacity: 1;
  pointer-events: auto;
}

.message-actions-button {
  width: 28px;
  height: 24px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--muted-strong);
  cursor: pointer;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.1);
}

.message-actions-menu {
  position: absolute;
  top: 28px;
  right: 0;
  z-index: 90;
  display: none;
  min-width: 126px;
  padding: 6px;
  border: 1px solid rgba(17, 24, 39, 0.09);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(10px);
}

.message-actions.suppress-hover .message-actions-menu {
  display: none;
}

.message-action {
  width: 100%;
  min-height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  padding: 0 9px;
  text-align: left;
  font-size: 13px;
  font-weight: 750;
  white-space: nowrap;
}

.message-action:hover {
  background: rgba(0, 168, 132, 0.09);
}

.message-action.danger {
  color: #b4232a;
}

.message-action.danger:hover {
  background: rgba(220, 38, 38, 0.08);
}

@media (hover: none) {
  .message-actions {
    opacity: 1;
    pointer-events: auto;
  }
}
.mobile-back-button,
.mobile-chat-settings {
  display: none;
}

@media (max-width: 820px) {
  html,
  body {
    width: 100%;
    height: 100%;
    overscroll-behavior-x: none;
    background: #f8fbff;
  }

  body {
    overflow: hidden;
  }

  .app-shell {
    position: relative;
    display: block;
    width: 100%;
    height: var(--app-height, 100dvh);
    min-height: var(--app-height, 100dvh);
    overflow: hidden;
    background:
      radial-gradient(circle at 12% 6%, rgba(0, 168, 132, 0.12), transparent 28%),
      radial-gradient(circle at 92% 2%, rgba(79, 70, 229, 0.10), transparent 24%),
      linear-gradient(155deg, rgba(248, 252, 255, 0.98), rgba(246, 253, 248, 0.96) 52%, rgba(255, 250, 242, 0.96));
  }

  .sidebar,
  .workspace {
    position: absolute;
    inset: 0;
    width: 100%;
    height: var(--app-height, 100dvh);
    max-height: none;
    min-height: 0;
    transition:
      transform 260ms cubic-bezier(0.2, 0.86, 0.24, 1),
      opacity 220ms ease;
    will-change: transform;
  }

  .sidebar {
    z-index: 1;
    border: 0;
    padding: max(18px, env(safe-area-inset-top)) 16px max(14px, env(safe-area-inset-bottom));
    gap: 12px;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 252, 255, 0.88)),
      radial-gradient(circle at 12% 10%, rgba(0, 168, 132, 0.10), transparent 30%);
    box-shadow: none;
  }

  .workspace {
    z-index: 2;
    transform: translateX(calc(100% + var(--mobile-chat-drag, 0px)));
    background:
      radial-gradient(circle at 18% 8%, rgba(0, 168, 132, 0.10), transparent 28%),
      linear-gradient(135deg, rgba(247, 252, 249, 0.98), rgba(255, 249, 239, 0.96));
  }

  .app-shell.mobile-chat-open .sidebar {
    transform: translateX(-18%);
    opacity: 0.42;
    pointer-events: none;
  }

  .app-shell.mobile-chat-open .workspace {
    transform: translateX(var(--mobile-chat-drag, 0px));
  }

  .app-shell.mobile-swipe-active .sidebar,
  .app-shell.mobile-swipe-active .workspace {
    transition: none;
  }

  .brand {
    padding: 4px 54px 8px 2px;
    gap: 12px;
  }

  .brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    font-size: 22px;
    box-shadow: 0 16px 34px rgba(0, 168, 132, 0.22);
  }

  .brand h1 {
    font-size: 24px;
    line-height: 1.15;
  }

  .app-version {
    font-size: 11px;
  }

  .brand p {
    margin-top: 2px;
    font-size: 16px;
  }

  .sidebar-footer {
    position: absolute;
    top: max(20px, env(safe-area-inset-top));
    right: 16px;
    width: auto;
    margin: 0;
    padding: 0;
    z-index: 4;
  }

  .settings-button {
    width: auto;
    min-height: 38px;
    border-radius: 999px;
    padding: 0 14px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(16px);
  }

  #newProjectButton {
    min-height: 54px;
    border-radius: 17px;
    font-size: 17px;
    box-shadow: 0 18px 34px rgba(0, 168, 132, 0.22);
  }

  .api-status,
  .token-usage {
    border-radius: 16px;
    padding: 13px 14px;
    font-size: 15px;
  }

  .project-list-header {
    padding: 16px 4px 4px;
    font-size: 18px;
  }

  .project-list {
    flex: 1;
    min-height: 0;
    padding: 0 0 8px;
    gap: 0;
    overflow: auto;
  }

  .archive-folder {
    padding: 2px 0 6px;
  }

  .archive-folder-button {
    min-height: 42px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.78);
    font-size: 14px;
  }

  .archive-project-list {
    max-height: 34vh;
    padding-bottom: 2px;
  }

  .project-item {
    min-height: 66px;
    border-radius: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .project-item::after {
    left: 4px;
    right: 4px;
    background: rgba(17, 24, 39, 0.08);
  }

  .project-item:hover,
  .project-item.active {
    background: transparent;
    box-shadow: none;
  }

  .project-open-button {
    min-height: 66px;
    border-radius: 16px;
    padding: 11px 8px 11px 4px;
  }

  .project-item.active .project-open-button {
    background: transparent;
  }

  .project-item strong {
    font-size: 17px;
    font-weight: 850;
  }

  .project-language-pair {
    font-size: 13px;
  }

  .project-activity-time {
    font-size: 12px;
  }

  .project-menu-button {
    display: none;
  }

  .workspace-header {
    min-height: 60px;
    padding: max(10px, env(safe-area-inset-top)) 12px 10px;
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.86));
    border-bottom: 1px solid rgba(17, 24, 39, 0.07);
    backdrop-filter: blur(22px) saturate(1.08);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  }

  .mobile-back-button,
  .mobile-chat-settings {
    display: grid;
    place-items: center;
    border: 0;
    color: var(--ink);
    cursor: pointer;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(14px);
  }

  .mobile-back-button {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 32px;
    line-height: 1;
    padding-bottom: 3px;
  }

  .mobile-chat-settings {
    min-height: 36px;
    border-radius: 999px;
    padding: 0 12px;
    font-weight: 850;
  }

  .workspace-title-block {
    min-width: 0;
  }

  .workspace-header .eyebrow {
    display: none;
  }

  .workspace-header h2 {
    max-width: none;
    font-size: 17px;
    line-height: 1.18;
  }

  .language-pair {
    grid-column: 2;
    justify-self: start;
    border: 0;
    background: transparent;
    padding: 0;
    color: var(--muted);
    font-size: 12px;
    font-weight: 750;
    line-height: 1.2;
  }

  .empty-state {
    display: none;
  }

  .chat-area {
    height: calc(var(--app-height, 100dvh) - 60px - env(safe-area-inset-top));
    grid-template-rows: minmax(0, 1fr) auto;
    padding-bottom: var(--ime-bottom, 0px);
    transition: padding-bottom 160ms ease;
  }

  .conversation {
    padding: 14px 10px 10px;
    gap: 7px;
    scroll-padding-bottom: calc(var(--ime-bottom, 0px) + 12px);
  }

  .composer {
    padding: 8px 10px max(10px, env(safe-area-inset-bottom));
    gap: 7px;
  }

  .composer-row {
    display: none;
  }

  #sourceText {
    min-height: 48px;
    max-height: 118px;
    border-radius: 18px;
    padding: 12px 13px;
    font-size: 16px;
    line-height: 1.35;
  }

  .translate-button {
    width: 100%;
    min-height: 44px;
    border-radius: 16px;
  }

  .bubble {
    max-width: 86%;
    border-radius: 17px;
    padding: 8px 10px 6px;
  }

  .message-actions {
    opacity: 1;
    pointer-events: auto;
  }

  .settings-dialog {
    width: min(100vw - 20px, 520px);
    height: min(86dvh, 720px);
    max-height: min(86dvh, 720px);
    border-radius: 22px;
  }

  .settings-dialog form {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
    padding: 16px;
  }

  .settings-tabs,
  .settings-panel,
  #settingsStatus,
  .settings-dialog .dialog-actions {
    grid-column: 1;
    grid-row: auto;
  }
}
@media (max-width: 820px) {
  .hidden {
    display: none !important;
  }
}
.mobile-list-settings {
  display: none;
}

@media (max-width: 820px) {
  .sidebar-footer {
    display: none !important;
  }

  .mobile-list-settings {
    position: absolute;
    top: max(22px, env(safe-area-inset-top));
    right: 16px;
    z-index: 20;
    display: grid !important;
    place-items: center;
    width: auto;
    min-width: 58px;
    min-height: 38px;
    border: 0;
    border-radius: 999px;
    padding: 0 14px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.12);
    backdrop-filter: blur(16px);
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 850;
    line-height: 1;
    appearance: none;
  }
}
@media (max-width: 820px) {
  .settings-dialog[open] {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: var(--app-height, 100dvh);
    max-width: none;
    max-height: none;
    margin: 0;
    border: 0;
    border-radius: 0;
    padding: 0;
    overflow: hidden;
    background:
      radial-gradient(circle at 16% 8%, rgba(0, 168, 132, 0.10), transparent 26%),
      linear-gradient(155deg, rgba(248, 252, 255, 0.98), rgba(246, 253, 248, 0.97) 48%, rgba(255, 250, 242, 0.98));
    box-shadow: none;
  }

  .settings-dialog::backdrop {
    background: rgba(15, 23, 42, 0.22);
    backdrop-filter: blur(6px);
  }

  .settings-dialog form {
    width: 100%;
    height: 100%;
    max-height: none;
    min-height: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
    gap: 0;
    overflow: hidden;
  }

  .settings-header {
    position: sticky;
    top: 0;
    z-index: 5;
    grid-column: 1;
    padding: max(14px, env(safe-area-inset-top)) 16px 12px;
    align-items: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.9));
    border-bottom: 1px solid rgba(17, 24, 39, 0.07);
    backdrop-filter: blur(22px) saturate(1.08);
  }

  .settings-header h2 {
    font-size: 22px;
    line-height: 1.16;
  }

  .settings-header p {
    display: none;
  }

  .settings-header .icon-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 24px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
  }

  .settings-tabs {
    grid-column: 1;
    grid-row: 2;
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 56px;
    padding: 9px 12px;
    border: 0;
    border-bottom: 1px solid rgba(17, 24, 39, 0.06);
    border-radius: 0;
    overflow-x: auto;
    overflow-y: hidden;
    background: rgba(255, 255, 255, 0.86);
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .settings-tabs::-webkit-scrollbar {
    display: none;
  }

  .settings-tab {
    flex: 0 1 auto;
    min-width: min(112px, 38vw);
    max-width: 168px;
    min-height: 38px;
    border-radius: 999px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.88);
    color: var(--muted-strong);
    text-align: center;
    justify-content: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.05);
  }

  .settings-tab.active {
    background: linear-gradient(135deg, rgba(0, 168, 132, 0.96), rgba(67, 142, 125, 0.90));
    color: #fff;
    box-shadow: 0 10px 22px rgba(0, 168, 132, 0.18);
  }

  .settings-panel {
    grid-column: 1;
    grid-row: 3;
    height: auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    align-content: start;
    padding: 14px 14px 18px;
    gap: 13px;
    -webkit-overflow-scrolling: touch;
  }

  .settings-panel.active {
    display: grid;
  }

  .settings-dialog label {
    gap: 7px;
    font-size: 14px;
  }

  .settings-dialog select,
  .settings-dialog input,
  .settings-dialog textarea {
    width: 100%;
    min-height: 46px;
    border-radius: 14px;
    font-size: 16px;
    padding: 0 12px;
  }

  .settings-dialog textarea {
    padding-top: 11px;
    padding-bottom: 11px;
  }

  .secret-input {
    grid-template-columns: minmax(0, 1fr) 42px;
  }

  .secret-input .icon-button {
    width: 42px;
    height: 46px;
    border-radius: 14px;
  }

  .model-row,
  .language-grid,
  .file-save-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .checkbox-row {
    min-height: 46px;
    grid-template-columns: 24px minmax(0, 1fr);
    align-items: center;
    padding: 10px 12px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.05);
  }

  .checkbox-row input[type="checkbox"] {
    min-height: 20px;
    width: 20px;
    padding: 0;
  }

  #settingsStatus {
    grid-column: 1;
    grid-row: 4;
    max-height: 54px;
    overflow: auto;
    margin: 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    padding: 8px 14px;
    font-size: 12px;
    line-height: 1.45;
    background: rgba(255, 255, 255, 0.9);
  }

  .settings-dialog .dialog-actions {
    position: sticky;
    bottom: 0;
    z-index: 6;
    grid-column: 1;
    grid-row: 5;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 10px 12px max(12px, env(safe-area-inset-bottom));
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.98));
    border-top: 1px solid rgba(17, 24, 39, 0.07);
    backdrop-filter: blur(22px) saturate(1.08);
  }

  .settings-dialog .dialog-actions button {
    min-height: 42px;
    width: 100%;
    border-radius: 14px;
    padding: 8px 10px;
    font-size: 13px;
    height: auto;
  }

  .settings-dialog .dialog-actions .primary-button {
    grid-column: 1 / -1;
    order: -1;
    min-height: 48px;
    font-size: 15px;
  }
}
@media (max-width: 820px) {
  .settings-dialog h2 {
    font-size: 22px;
  }

  .settings-dialog label {
    font-size: 13px;
    font-weight: 850;
  }

  .settings-dialog select,
  .settings-dialog input,
  .settings-dialog textarea {
    min-height: 42px;
    border-radius: 13px;
    font-size: 15px;
    font-weight: 650;
  }

  .settings-tab {
    min-height: 34px;
    padding: 8px 12px;
    font-size: 14px;
  }

  .settings-panel {
    padding: 12px 14px 14px;
    gap: 11px;
  }

  .secret-input .icon-button {
    height: 42px;
  }

  .settings-dialog .dialog-actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px;
    padding-top: 8px;
  }

  .settings-dialog .dialog-actions button {
    min-height: 38px;
    border-radius: 13px;
    font-size: 12px;
    font-weight: 850;
  }

  .settings-dialog .dialog-actions .primary-button {
    grid-column: 1 / -1;
    min-height: 44px;
    font-size: 15px;
  }
}
.brand-mark {
  object-fit: cover;
  padding: 0;
  background: #fff;
  box-shadow: 0 10px 24px rgba(0, 168, 132, 0.18);
}

@media (max-width: 820px) {
  .brand-mark {
    padding: 0;
    background: #fff;
    box-shadow: 0 16px 34px rgba(0, 168, 132, 0.20);
  }
}
@media (max-width: 820px) {
  .sidebar {
    padding: max(18px, env(safe-area-inset-top)) 18px max(18px, env(safe-area-inset-bottom));
    gap: 10px;
  }

  #newProjectButton.primary-button {
    position: fixed;
    right: max(18px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
    z-index: 40;
    width: 58px;
    height: 58px;
    min-height: 0;
    padding: 0;
    border-radius: 50%;
    display: grid;
    place-items: center;
    overflow: hidden;
    color: transparent;
    font-size: 0;
    line-height: 1;
    box-shadow:
      0 16px 34px rgba(0, 168, 132, 0.26),
      0 2px 0 rgba(255, 255, 255, 0.5) inset;
    transition: transform 150ms ease, box-shadow 160ms ease, filter 160ms ease;
  }

  #newProjectButton.primary-button::before {
    content: "+";
    display: block;
    color: #fff;
    font-size: 36px;
    font-weight: 650;
    line-height: 0.82;
    width: 1em;
    height: 1em;
    text-align: center;
    transform: translateY(-0.5px);
  }

  #newProjectButton.primary-button:active {
    transform: scale(0.96);
    filter: saturate(1.08);
    box-shadow:
      0 10px 24px rgba(0, 168, 132, 0.24),
      0 2px 0 rgba(255, 255, 255, 0.48) inset;
  }

  .api-status {
    margin: 2px 0 0;
    border-radius: 15px;
    padding: 10px 13px;
    font-size: 13px;
    line-height: 1.35;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.88);
  }

  .api-status.connected {
    background: rgba(255, 250, 240, 0.9);
    border-color: rgba(190, 132, 74, 0.2);
    color: #8a5a2b;
  }

  .token-usage {
    margin: 0 2px 8px;
    padding: 6px 2px 0;
    border-radius: 0;
    color: rgba(75, 85, 99, 0.58);
    font-size: 12px;
    background: transparent;
    box-shadow: none;
  }

  .project-list-header {
    padding: 12px 4px 6px;
    font-size: 17px;
  }

  .project-list {
    padding: 0 0 86px;
    gap: 0;
  }

  .project-item {
    min-height: 56px;
    grid-template-columns: minmax(0, 1fr);
    border-radius: 0;
    background: transparent !important;
    box-shadow: none !important;
  }

  .project-item::after {
    left: 0;
    right: 0;
    background: rgba(17, 24, 39, 0.075);
  }

  .project-item:hover,
  .project-item.active {
    background: transparent !important;
    box-shadow: none !important;
  }

  .project-item.is-pressing {
    background: rgba(17, 24, 39, 0.055) !important;
    transform: scale(0.992);
  }

  .project-item.actions-open {
    background: rgba(255, 255, 255, 0.95) !important;
    box-shadow:
      0 0 0 1px rgba(0, 168, 132, 0.18),
      0 10px 24px rgba(15, 23, 42, 0.12) !important;
    transform: scale(0.996);
  }

  .project-open-button {
    min-height: 56px;
    border-radius: 12px;
    padding: 7px 7px 7px 0;
  }

  .project-item.active .project-open-button {
    background: transparent !important;
    box-shadow: none !important;
  }

  .project-title-row {
    align-items: baseline;
    gap: 10px;
  }

  .project-item strong {
    font-size: 15px;
    font-weight: 820;
    line-height: 1.18;
  }

  .project-activity-time {
    font-size: 11px;
    color: rgba(75, 85, 99, 0.58);
  }

  .project-meta-row {
    margin-top: 4px;
    min-height: 15px;
  }

  .project-language-pair {
    font-size: 12px;
    color: rgba(75, 85, 99, 0.7);
  }

  .project-menu-button {
    display: none;
  }

  .project-menu-button:hover,
  .project-menu-button:focus-visible {
    background: transparent;
    box-shadow: none;
  }
}
@media (max-width: 820px) {
  .project-dialog[open] {
    position: fixed;
    inset: auto 12px calc(var(--ime-bottom, 0px) + max(10px, env(safe-area-inset-bottom)));
    width: auto;
    max-width: none;
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 560px);
    margin: 0;
    border-radius: 24px;
    overflow: hidden;
  }

  .project-dialog::backdrop {
    background: rgba(15, 23, 42, 0.28);
    backdrop-filter: blur(8px);
  }

  .project-dialog form {
    width: 100%;
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 560px);
    overflow: auto;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 13px;
    padding: 18px;
  }

  .project-dialog h2 {
    font-size: 28px;
    line-height: 1.12;
    letter-spacing: 0;
  }

  .project-dialog label {
    gap: 7px;
    font-size: 13px;
    font-weight: 880;
  }

  .project-dialog input,
  .project-dialog select {
    width: 100%;
    min-height: 44px;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 650;
    padding: 0 13px;
  }

  .project-dialog .language-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .project-dialog .dialog-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    margin-top: 2px;
  }

  .project-dialog .dialog-actions button {
    width: 100%;
    min-height: 44px;
    border-radius: 15px;
    font-size: 15px;
    font-weight: 880;
    padding: 8px 10px;
    height: auto;
  }
}

@media (max-width: 390px) {
  .project-dialog[open] {
    left: 10px;
    right: 10px;
  }

  .project-dialog form {
    padding: 16px;
    gap: 11px;
  }

  .project-dialog h2 {
    font-size: 24px;
  }

  .project-dialog .language-grid {
    grid-template-columns: 1fr;
  }
}
.mobile-sync-button {
  display: none;
}

@media (max-width: 820px) {
  .mobile-sync-button {
    display: inline-grid;
    place-items: center;
    justify-self: start;
    min-height: 34px;
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: 999px;
    padding: 0 13px;
    margin: 2px 0 0;
    background: rgba(255, 255, 255, 0.88);
    color: rgba(17, 24, 39, 0.72);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.05);
    font-size: 13px;
    font-weight: 850;
    cursor: pointer;
    max-width: 100%;
    line-height: 1.18;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mobile-sync-button:disabled {
    opacity: 0.62;
    cursor: wait;
  }

}
/* Mobile project dialog hardening: keep the create/edit sheet readable with on-screen keyboards. */
@media (max-width: 960px), (pointer: coarse) and (max-width: 1180px) {
  .project-dialog[open] {
    position: fixed;
    inset: auto max(12px, env(safe-area-inset-right)) calc(var(--ime-bottom, 0px) + max(10px, env(safe-area-inset-bottom))) max(12px, env(safe-area-inset-left));
    width: auto;
    max-width: none;
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 560px);
    margin: 0;
    overflow: hidden;
    border-radius: 24px;
  }

  .project-dialog form {
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 560px);
    overflow: auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) !important;
    grid-template-rows: auto;
    gap: 13px;
    padding: 18px;
    overscroll-behavior: contain;
  }

  .project-dialog h2,
  .project-dialog label,
  .project-dialog .language-grid,
  .project-dialog .dialog-actions {
    min-width: 0;
    grid-column: 1 / -1;
  }

  .project-dialog h2 {
    font-size: 28px;
    line-height: 1.12;
  }

  .project-dialog input,
  .project-dialog select {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    min-height: 44px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .project-dialog .language-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .project-dialog .dialog-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
    margin-top: 2px;
  }

  .project-dialog .dialog-actions button {
    width: 100%;
    min-width: 0;
  }
}

@media (max-width: 430px) {
  .project-dialog form {
    padding: 16px;
    gap: 11px;
  }

  .project-dialog h2 {
    font-size: 24px;
  }

  .project-dialog .language-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Long-press message actions for touch screens. */
.bubble {
  transition: transform 140ms ease, box-shadow 160ms ease, filter 160ms ease, background 160ms ease;
}

.bubble.is-pressing {
  transform: scale(0.986);
  filter: brightness(0.985);
  box-shadow:
    0 0 0 2px rgba(0, 168, 132, 0.12),
    0 10px 24px rgba(15, 23, 42, 0.12);
}

.bubble.actions-open .message-actions {
  opacity: 1;
  pointer-events: auto;
}

.bubble.actions-open .message-actions-menu {
  display: grid;
  gap: 2px;
}

.bubble .message-actions.suppress-hover .message-actions-menu,
.bubble.actions-open .message-actions.suppress-hover .message-actions-menu {
  display: none;
}

@media (hover: none), (pointer: coarse), (max-width: 820px) {
  .bubble {
    padding-right: 11px;
    -webkit-user-select: none;
    user-select: none;
    touch-action: pan-y;
  }

  .message-actions {
    top: 8px;
    right: 8px;
    opacity: 0;
    pointer-events: none;
  }

  .bubble.actions-open {
    z-index: 8;
    transform: scale(0.992);
    box-shadow:
      0 0 0 2px rgba(0, 168, 132, 0.2),
      0 16px 30px rgba(15, 23, 42, 0.18);
  }

  .bubble.actions-open .message-actions-button {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
  }

  .message-actions-menu {
    top: 32px;
    min-width: 138px;
  }

  .bubble.left .message-actions-menu {
    right: auto;
    left: 0;
  }
}

/* Mobile viewport lock: reduce accidental page zoom while preserving app scrolling. */
@media (max-width: 820px), (pointer: coarse) {
  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body,
  button,
  input,
  textarea,
  select,
  .bubble,
  .project-item {
    touch-action: manipulation;
  }
}

/* Comfortable app feedback primitives. */
.toast-host {
  position: fixed;
  left: 50%;
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 5000;
  display: grid;
  gap: 8px;
  width: min(92vw, 420px);
  pointer-events: none;
  transform: translateX(-50%);
}

.app-toast {
  justify-self: center;
  max-width: 100%;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.16);
  font-size: 13px;
  font-weight: 780;
  line-height: 1.35;
  text-align: center;
  opacity: 0;
  transform: translateY(8px) scale(0.98);
  transition: opacity 160ms ease, transform 160ms ease;
  backdrop-filter: blur(14px);
}

.app-toast.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.app-toast.success {
  border-color: rgba(0, 168, 132, 0.2);
  background: rgba(234, 255, 245, 0.95);
}

.app-toast.warning {
  border-color: rgba(217, 119, 6, 0.2);
  background: rgba(255, 249, 232, 0.96);
}

.app-toast.error {
  border-color: rgba(220, 38, 38, 0.2);
  background: rgba(255, 241, 242, 0.96);
}

.app-dialog {
  width: min(440px, calc(100vw - 32px));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  padding: 0;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.app-dialog::backdrop {
  background: rgba(15, 23, 42, 0.26);
  backdrop-filter: blur(8px);
}

.app-dialog form {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.app-dialog h2,
.app-dialog p {
  margin: 0;
}

.app-dialog h2 {
  font-size: 20px;
  line-height: 1.2;
}

.app-dialog p {
  color: var(--muted-strong);
  line-height: 1.55;
}

.app-dialog label {
  display: grid;
  gap: 8px;
  font-size: 13px;
  font-weight: 850;
}

.app-dialog textarea {
  min-height: 96px;
  max-height: 180px;
  font-size: 15px;
}

.compact-actions {
  justify-content: stretch;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compact-actions button {
  width: 100%;
}

.danger-button {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  box-shadow: 0 14px 26px rgba(220, 38, 38, 0.18);
}

@media (max-width: 820px), (pointer: coarse) {
  .toast-host {
    bottom: calc(var(--ime-bottom, 0px) + max(16px, env(safe-area-inset-bottom)));
  }

  .app-dialog {
    position: fixed;
    inset: auto max(12px, env(safe-area-inset-right)) calc(var(--ime-bottom, 0px) + max(10px, env(safe-area-inset-bottom))) max(12px, env(safe-area-inset-left));
    width: auto;
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 620px);
    margin: 0;
    overflow: hidden;
    border-radius: 24px;
  }

  .app-dialog form {
    max-height: min(calc(var(--app-height, 100dvh) - var(--ime-bottom, 0px) - 20px), 620px);
    overflow: auto;
    padding: 18px;
    overscroll-behavior: contain;
  }
}

/* Always-visible copy shortcut beside each translation bubble. */
.quick-copy-button {
  position: absolute;
  top: 8px;
  z-index: 4;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid rgba(17, 24, 39, 0.1);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: rgba(55, 65, 81, 0.8);
  cursor: pointer;
  opacity: 0.5;
  box-shadow: 0 5px 12px rgba(15, 23, 42, 0.06);
  transition: opacity 140ms ease, background 140ms ease, color 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}

.bubble.left .quick-copy-button {
  right: -39px;
}

.bubble.right .quick-copy-button {
  left: -39px;
}

.quick-copy-button:hover,
.quick-copy-button:focus-visible {
  background: #ffffff;
  color: #008f73;
  opacity: 1;
  box-shadow: 0 9px 22px rgba(15, 23, 42, 0.15);
  outline: none;
  transform: translateY(-1px);
}

.quick-copy-button:active {
  transform: scale(0.94);
}

.copy-icon {
  position: relative;
  display: block;
  width: 15px;
  height: 15px;
}

.copy-icon span {
  position: absolute;
  width: 9px;
  height: 10px;
  border: 1.6px solid currentColor;
  border-radius: 2px;
  background: inherit;
}

.copy-icon span:first-child {
  top: 1px;
  left: 1px;
  opacity: 0.62;
}

.copy-icon span:last-child {
  right: 1px;
  bottom: 1px;
  background: #ffffff;
}

.quick-copy-button.copied {
  background: #008f73;
  color: #ffffff;
}

.quick-copy-button.copied .copy-icon::before {
  content: "✓";
  position: absolute;
  inset: -3px;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 900;
}

.quick-copy-button.copied .copy-icon span {
  display: none;
}

@media (max-width: 480px) {
  .quick-copy-button {
    top: 7px;
    width: 28px;
    height: 28px;
  }

  .bubble.left .quick-copy-button {
    right: -34px;
  }

  .bubble.right .quick-copy-button {
    left: -34px;
  }
}

@media (hover: none), (pointer: coarse) {
  .quick-copy-button {
    opacity: 0.62;
  }
}

/* Grouped settings sections. */
.settings-section {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 0;
}

.grouped-settings-panel {
  gap: 22px;
}

.grouped-settings-panel .settings-section + .settings-section {
  border-top: 1px solid var(--line-soft);
  padding-top: 20px;
}

.settings-section h3 {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 850;
  line-height: 1.3;
}

.general-settings-section {
  width: 100%;
  max-width: none;
}

.settings-panel label:not(.checkbox-row),
.settings-section label:not(.checkbox-row) {
  width: 100%;
  min-width: 0;
  margin: 0;
  color: var(--muted-strong);
  font-size: 12px;
}

.settings-panel select,
.settings-panel input:not([type="checkbox"]),
.settings-panel textarea {
  width: 100%;
  border-radius: 10px;
}

.general-settings-section .ui-language-field {
  width: 100%;
  max-width: none;
  margin: 0;
  display: grid;
  gap: 8px;
}

.general-settings-section .ui-language-field select {
  width: 100%;
  min-height: 42px;
}

.general-settings-section .checkbox-row {
  width: 100%;
  min-height: 48px;
  margin: 0;
  border-top: 1px solid var(--line-soft);
  padding: 10px 2px;
  color: var(--ink);
  font-size: 14px;
}

.general-settings-section .ui-language-field + .checkbox-row {
  margin-top: 4px;
}

.settings-panel .api-dialog-status {
  border-radius: 10px;
}

.settings-panel .file-save-row button,
.settings-panel .model-row button {
  min-height: 40px;
}

@media (max-width: 820px) {
  .general-settings-section,
  .general-settings-section .ui-language-field,
  .settings-panel label:not(.checkbox-row) {
    width: 100%;
    max-width: none;
    margin-left: 0;
  }
}
.api-privacy-note {
  margin: 0;
  color: rgba(75, 85, 99, 0.72);
  font-size: 12px;
  line-height: 1.5;
}