:root {
  color-scheme: light;
  --canvas: #f3f7fc;
  --canvas-deep: #eaf1f8;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-solid: #ffffff;
  --surface-soft: #f7f9fc;
  --ink: #172033;
  --body: #3d4b63;
  --muted: #718097;
  --quiet: #9aa8ba;
  --line: #dde6f0;
  --line-strong: #cbd8e6;
  --blue: #5879a8;
  --blue-dark: #3e5f8f;
  --blue-soft: #eaf1fa;
  --blue-pale: #f2f6fb;
  --high: #b34f5f;
  --high-soft: #fff0f2;
  --medium: #a56c27;
  --medium-soft: #fff7e8;
  --low: #52718d;
  --low-soft: #eef5f9;
  --success: #3f7966;
  --success-soft: #edf7f3;
  --radius-card: 24px;
  --radius-control: 14px;
  --radius-small: 10px;
  --shadow-card: 0 22px 70px rgba(58, 83, 116, 0.10), 0 3px 12px rgba(58, 83, 116, 0.05);
  --shadow-hover: 0 28px 82px rgba(58, 83, 116, 0.14), 0 8px 18px rgba(58, 83, 116, 0.06);
  --font-sans: "PingFang SC", "Microsoft YaHei UI", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 320px;
  background: var(--canvas);
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), transparent 310px),
    var(--canvas);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(88, 121, 168, 0.28);
  outline-offset: 3px;
}

.ambient {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(4px);
}

.ambient-one {
  top: -190px;
  right: -170px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(133, 163, 204, 0.20), rgba(133, 163, 204, 0));
}

.ambient-two {
  bottom: -280px;
  left: -220px;
  width: 660px;
  height: 660px;
  background: radial-gradient(circle, rgba(168, 192, 218, 0.18), rgba(168, 192, 218, 0));
}

.page-shell {
  width: min(1480px, calc(100% - 44px));
  margin: 0 auto;
  padding: 18px 0 22px;
}

.glass-nav {
  position: sticky;
  top: 14px;
  z-index: 5;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 66px;
  padding: 8px 12px 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 22px;
  background: rgba(247, 250, 253, 0.78);
  box-shadow: 0 12px 36px rgba(53, 78, 109, 0.09), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 9px);
  grid-template-rows: repeat(2, 9px);
  gap: 3px;
  width: 34px;
  height: 34px;
  padding: 6px;
  border-radius: 11px;
  background: var(--blue-dark);
  box-shadow: 0 7px 18px rgba(62, 95, 143, 0.22);
}

.brand-mark i {
  border-radius: 3px;
  background: #f7fbff;
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  opacity: 0.58;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  font-size: 15px;
  font-weight: 680;
  letter-spacing: 0.01em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 12px;
}

.mode-switch {
  display: flex;
  justify-self: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(203, 216, 230, 0.72);
  border-radius: 15px;
  background: rgba(233, 239, 247, 0.76);
}

.mode-button {
  min-width: 98px;
  min-height: 38px;
  padding: 7px 16px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 150ms ease;
}

.mode-button:hover {
  color: var(--ink);
}

.mode-button.is-active {
  background: rgba(255, 255, 255, 0.94);
  color: var(--blue-dark);
  box-shadow: 0 4px 12px rgba(64, 89, 120, 0.10);
}

.mode-button:active {
  transform: scale(0.98);
}

.nav-meta {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
}

.nav-meta > span {
  white-space: nowrap;
}

.nav-meta strong {
  color: var(--blue-dark);
  font-variant-numeric: tabular-nums;
}

.history-jump {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--body);
  cursor: pointer;
  font-size: 13px;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.history-jump:hover {
  border-color: var(--line-strong);
  background: #ffffff;
}

.page-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 480px);
  align-items: end;
  gap: 40px;
  padding: 34px 4px 22px;
}

.eyebrow,
.section-label {
  margin: 0 0 5px;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.page-heading h1 {
  margin: 0;
  font-size: clamp(31px, 3vw, 43px);
  font-weight: 680;
  line-height: 1.16;
  letter-spacing: -0.04em;
}

.page-heading h1 span {
  color: var(--blue);
  font-weight: 580;
}

.page-heading > p {
  max-width: 44ch;
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(380px, 0.88fr) minmax(540px, 1.12fr);
  gap: 20px;
}

.surface-card {
  min-width: 0;
  border: 1px solid rgba(210, 222, 235, 0.88);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  transition: box-shadow 260ms cubic-bezier(0.16, 1, 0.3, 1), transform 260ms cubic-bezier(0.16, 1, 0.3, 1), border-color 220ms ease;
}

.surface-card:hover {
  border-color: rgba(190, 207, 225, 0.96);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.editor-card,
.result-card,
.batch-input-card,
.batch-result-card {
  min-height: 660px;
}

.editor-card,
.batch-input-card {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.1vw, 30px);
}

.result-card,
.batch-result-card {
  max-height: 760px;
  overflow-y: auto;
  scrollbar-color: #c8d5e3 transparent;
  scrollbar-width: thin;
}

.card-heading,
.history-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.card-heading h2,
.history-heading h2 {
  margin: 0;
  font-size: 21px;
  font-weight: 660;
  line-height: 1.3;
  letter-spacing: -0.025em;
}

.char-count,
.batch-count,
.result-state {
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.char-count strong,
.batch-count {
  color: var(--body);
  font-weight: 650;
}

.editor-field {
  display: flex;
  flex: 1;
  flex-direction: column;
  margin-top: 24px;
}

.editor-field label {
  margin-bottom: 8px;
  color: var(--body);
  font-size: 14px;
  font-weight: 620;
}

.editor-field textarea {
  flex: 1;
  width: 100%;
  min-height: 395px;
  resize: none;
  padding: 18px 19px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
  outline: none;
  background: rgba(247, 250, 253, 0.88);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.82;
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.editor-field textarea::placeholder {
  color: #8695a9;
}

.editor-field textarea:focus {
  border-color: var(--blue);
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(88, 121, 168, 0.10);
}

.batch-field textarea {
  min-height: 430px;
}

.field-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
}

.input-error {
  margin: 9px 0 0;
  color: var(--high);
  font-size: 13px;
}

.editor-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 22px;
}

.secondary-actions {
  display: flex;
  gap: 8px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  cursor: pointer;
  font-size: 14px;
  font-weight: 620;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform 150ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.button:active {
  transform: scale(0.98);
}

.button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.button-primary {
  min-width: 138px;
  background: var(--blue-dark);
  color: #f9fbfe;
  box-shadow: 0 10px 20px rgba(62, 95, 143, 0.18);
}

.button-primary:hover {
  background: #34537f;
  box-shadow: 0 12px 24px rgba(62, 95, 143, 0.24);
  transform: translateY(-1px);
}

.button-arrow {
  font-size: 17px;
  font-weight: 450;
}

.button-secondary {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.82);
  color: var(--body);
}

.button-secondary:hover {
  border-color: #b8c8d9;
  background: #ffffff;
}

.button-quiet {
  background: transparent;
  color: var(--muted);
}

.button-quiet:hover {
  background: var(--blue-pale);
  color: var(--blue-dark);
}

.button-blue-soft {
  border-color: #c9d8e9;
  background: var(--blue-soft);
  color: var(--blue-dark);
}

.button-blue-soft:hover {
  border-color: #b8cce3;
  background: #e1ebf7;
}

.button-small {
  min-height: 36px;
  padding: 7px 12px;
  border-radius: var(--radius-small);
  font-size: 13px;
}

.result-heading {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 25px 27px 18px;
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: rgba(252, 253, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.result-state {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--surface-soft);
}

.result-empty,
.batch-empty {
  display: flex;
  min-height: 530px;
  padding: 58px 28px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.empty-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: 106px;
  height: 86px;
  margin-bottom: 24px;
}

.empty-visual span {
  position: absolute;
  width: 76px;
  height: 52px;
  border: 1px solid #c9d8e8;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 28px rgba(60, 88, 121, 0.08);
}

.empty-visual span:first-child {
  transform: translate(-15px, 11px) rotate(-7deg);
}

.empty-visual span:nth-child(2) {
  transform: translate(15px, 8px) rotate(6deg);
}

.empty-visual span:last-child {
  border-color: #adc2da;
  background: linear-gradient(145deg, #f9fbfe, #eaf1fa);
  transform: translateY(-8px);
}

.empty-visual span:last-child::after {
  position: absolute;
  top: 14px;
  left: 15px;
  width: 38px;
  height: 4px;
  border-radius: 4px;
  background: var(--blue);
  box-shadow: 0 11px 0 #ccd8e7, 0 22px 0 #dde6f0;
  content: "";
}

.result-empty h3,
.batch-empty strong {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 650;
}

.result-empty p,
.batch-empty p {
  max-width: 390px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.loading-state {
  padding: 28px 27px;
}

.skeleton {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-control);
  background: #e8eef5;
}

.skeleton::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 25%, rgba(255, 255, 255, 0.76) 50%, transparent 75%);
  content: "";
  transform: translateX(-100%);
  animation: shimmer 1.15s infinite;
}

.score-skeleton {
  height: 136px;
}

.line-skeleton {
  width: 62%;
  height: 16px;
  margin-top: 22px;
}

.line-skeleton.is-wide {
  width: 84%;
  margin-top: 28px;
}

.block-skeleton {
  height: 210px;
  margin-top: 20px;
}

@keyframes shimmer {
  to { transform: translateX(100%); }
}

.result-content {
  padding: 22px 27px 30px;
  animation: result-in 330ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes result-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.score-strip {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  min-height: 136px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--blue-pale);
}

.score-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
}

.score-main span,
.score-metrics span {
  color: var(--muted);
  font-size: 12px;
}

.score-main strong {
  margin-top: 1px;
  color: var(--blue-dark);
  font-size: 44px;
  font-weight: 660;
  line-height: 1.08;
  letter-spacing: -0.055em;
  font-variant-numeric: tabular-nums;
}

.score-main p {
  margin: 3px 0 0;
  color: var(--body);
  font-size: 13px;
  font-weight: 620;
}

.score-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
}

.score-metrics div {
  display: grid;
  gap: 3px;
  padding: 20px;
}

.score-metrics div + div {
  border-left: 1px solid var(--line);
}

.score-metrics strong {
  font-size: 23px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.agent-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
  padding: 10px 11px 10px 14px;
  border: 1px solid #d7e3f0;
  border-radius: var(--radius-control);
  background: linear-gradient(110deg, rgba(241, 246, 252, 0.96), rgba(250, 252, 255, 0.92));
}

.agent-action-row p {
  margin: 0;
  color: var(--body);
  font-size: 13px;
}

.result-tabs {
  display: flex;
  gap: 4px;
  margin-top: 18px;
  padding: 4px;
  border-radius: var(--radius-control);
  background: #eaf0f6;
}

.tab-button {
  flex: 1;
  min-height: 38px;
  padding: 7px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.tab-button.is-active {
  background: #ffffff;
  color: var(--blue-dark);
  box-shadow: 0 3px 10px rgba(54, 78, 108, 0.11);
}

.tab-panel {
  margin-top: 18px;
}

.category-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 13px;
}

.risk-tag {
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding: 4px 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  font-size: 12px;
  font-weight: 610;
}

.risk-tag[data-tone="high"] {
  border-color: #ecc8cf;
  background: var(--high-soft);
  color: var(--high);
}

.risk-tag[data-tone="medium"] {
  border-color: #ecd6b5;
  background: var(--medium-soft);
  color: var(--medium);
}

.risk-tag[data-tone="low"] {
  border-color: #cbdce7;
  background: var(--low-soft);
  color: var(--low);
}

.annotated-copy,
.optimized-copy,
.styled-copy {
  min-height: 250px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface-soft);
  color: var(--body);
  font-size: 15px;
  line-height: 1.9;
  white-space: pre-wrap;
}

.optimized-copy,
.styled-copy {
  background: rgba(255, 255, 255, 0.90);
}

.styled-copy {
  border-color: #cbdbea;
  background: linear-gradient(145deg, #ffffff, #f1f6fb);
}

.style-placeholder {
  display: grid;
  min-height: 210px;
  place-items: center;
  color: var(--muted);
  text-align: center;
}

.annotated-copy mark {
  padding: 2px 3px;
  border-radius: 5px;
  background: var(--medium-soft);
  color: var(--ink);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  cursor: help;
}

.annotated-copy mark[data-severity="high"] {
  background: #fce1e6;
  box-shadow: inset 0 -2px 0 var(--high);
}

.annotated-copy mark[data-severity="medium"] {
  background: #fff0d8;
  box-shadow: inset 0 -2px 0 var(--medium);
}

.annotated-copy mark[data-severity="low"] {
  background: #e8f1f7;
  box-shadow: inset 0 -2px 0 var(--low);
}

.safe-copy {
  display: grid;
  min-height: 240px;
  padding: 28px;
  place-items: center;
  border: 1px solid #c7ded5;
  border-radius: var(--radius-control);
  background: var(--success-soft);
  text-align: center;
}

.safe-copy strong {
  color: var(--success);
  font-size: 18px;
}

.safe-copy p {
  max-width: 340px;
  margin: 7px 0 0;
  color: #557166;
  font-size: 14px;
}

.issue-list {
  display: grid;
  gap: 12px;
}

.issue-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--medium);
  border-radius: var(--radius-control);
  background: rgba(255, 255, 255, 0.91);
}

.issue-card[data-severity="high"] { border-left-color: var(--high); }
.issue-card[data-severity="low"] { border-left-color: var(--low); }

.issue-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.issue-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.severity-label {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.issue-source {
  margin: 13px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 620;
  line-height: 1.65;
}

.issue-reason {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.suggestion-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  margin-top: 13px;
  padding: 12px 12px 12px 14px;
  border-radius: 11px;
  background: var(--blue-pale);
}

.suggestion-box p {
  margin: 0;
  color: var(--body);
  font-size: 13px;
  line-height: 1.65;
}

.copy-link {
  min-height: 30px;
  padding: 4px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #ffffff;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
}

.copy-link:hover {
  border-color: #b9cce0;
  color: var(--blue-dark);
}

.copy-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.copy-toolbar p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.history-board {
  margin-top: 20px;
  padding: 23px 26px 26px;
}

.history-heading {
  align-items: center;
}

.history-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.history-empty {
  grid-column: 1 / -1;
  padding: 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-control);
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

.history-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  min-height: 82px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: rgba(249, 251, 254, 0.86);
  cursor: pointer;
  text-align: left;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.history-item:hover {
  border-color: #bccfe2;
  background: #ffffff;
  transform: translateY(-1px);
}

.history-score {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 14px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-size: 18px;
  font-weight: 680;
  font-variant-numeric: tabular-nums;
}

.history-item[data-level="high"] .history-score {
  background: var(--high-soft);
  color: var(--high);
}

.history-copy {
  min-width: 0;
}

.history-copy strong {
  display: block;
  overflow: hidden;
  color: var(--body);
  font-size: 13px;
  font-weight: 620;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-copy span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.batch-results {
  display: grid;
  gap: 11px;
  padding: 20px 24px 26px;
}

.batch-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 4px;
}

.batch-summary div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--blue-pale);
}

.batch-summary span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.batch-summary strong {
  display: block;
  margin-top: 2px;
  font-size: 22px;
  font-weight: 660;
  font-variant-numeric: tabular-nums;
}

.batch-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: rgba(255, 255, 255, 0.91);
}

.batch-item-score {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 16px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-size: 19px;
  font-weight: 680;
}

.batch-item[data-level="high"] .batch-item-score {
  background: var(--high-soft);
  color: var(--high);
}

.batch-item-copy {
  min-width: 0;
}

.batch-item-copy strong {
  display: block;
  overflow: hidden;
  font-size: 14px;
  font-weight: 630;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-item-copy p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.batch-detail-button {
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-small);
  background: #ffffff;
  color: var(--blue-dark);
  cursor: pointer;
  font-size: 12px;
  font-weight: 620;
}

.footer-note {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 5px 0;
  color: var(--muted);
  font-size: 12px;
}

.footer-note p {
  margin: 0;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 10;
  max-width: 340px;
  padding: 12px 15px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-control);
  background: #253650;
  color: #f7fbff;
  box-shadow: 0 16px 40px rgba(29, 48, 75, 0.25);
  font-size: 13px;
  animation: toast-in 220ms ease both;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1100px) {
  .page-shell {
    width: min(940px, calc(100% - 32px));
  }

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

  .editor-card,
  .result-card,
  .batch-input-card,
  .batch-result-card {
    min-height: auto;
  }

  .result-card,
  .batch-result-card {
    max-height: none;
  }

  .editor-field textarea {
    min-height: 330px;
  }

  .result-empty,
  .batch-empty {
    min-height: 360px;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100% - 24px, 720px);
    padding-top: 10px;
  }

  .glass-nav {
    position: static;
    grid-template-columns: 1fr auto;
    gap: 10px 16px;
    padding: 10px 12px;
  }

  .mode-switch {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
  }

  .mode-button {
    flex: 1;
  }

  .nav-meta > span {
    display: none;
  }

  .page-heading {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 26px 3px 18px;
  }

  .page-heading > p {
    max-width: 58ch;
  }

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

@media (max-width: 560px) {
  .mode-button {
    min-height: 44px;
  }

  .brand-copy small {
    display: none;
  }

  .page-heading h1 {
    font-size: 30px;
  }

  .page-heading h1 span {
    display: block;
  }

  .editor-card,
  .batch-input-card {
    padding: 20px 16px 16px;
  }

  .result-heading,
  .result-content,
  .loading-state {
    padding-left: 16px;
    padding-right: 16px;
  }

  .editor-actions,
  .agent-action-row,
  .copy-toolbar,
  .footer-note {
    align-items: stretch;
    flex-direction: column;
  }

  .secondary-actions,
  .button-primary {
    flex: 1;
  }

  .secondary-actions .button,
  .button-primary,
  .batch-input-card > .editor-actions > .button {
    width: 100%;
  }

  .field-footer {
    flex-direction: column;
    gap: 2px;
  }

  .score-strip {
    grid-template-columns: 1fr;
  }

  .score-main {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .score-metrics div {
    padding: 14px;
  }

  .result-tabs {
    overflow-x: auto;
  }

  .tab-button {
    flex: 0 0 auto;
    min-width: 92px;
  }

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

  .copy-link {
    justify-self: start;
  }

  .history-board {
    padding: 20px 16px;
  }

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

  .batch-summary {
    grid-template-columns: 1fr;
  }

  .batch-item {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .batch-detail-button {
    grid-column: 1 / -1;
    width: 100%;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .glass-nav,
  .surface-card,
  .result-heading {
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}