:root {
  color-scheme: light;
  --ink: #171613;
  --muted: #6f675b;
  --paper: #f8f1df;
  --paper-2: #efe0ba;
  --line: #d3bd83;
  --cinnabar: #9b3229;
  --jade: #1e6b5c;
  --brass: #9f7324;
  --night: #22211d;
  --panel: rgba(255, 250, 238, 0.88);
  --shadow: 0 18px 55px rgba(44, 31, 13, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(155, 50, 41, 0.08), transparent 32%),
    linear-gradient(315deg, rgba(30, 107, 92, 0.12), transparent 38%),
    var(--paper);
  color: var(--ink);
  font-family: ui-serif, "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
}

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

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  border-bottom: 1px solid rgba(94, 72, 31, 0.24);
  background: rgba(248, 241, 223, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.brand img {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(25, 23, 20, 0.22);
  flex: 0 0 auto;
}

.brand h1 {
  margin: 0;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1;
  letter-spacing: 0;
}

.brand p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.token-box {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 230px;
}

.token-box label,
.field label {
  color: #4f473b;
  font-weight: 700;
  font-size: 14px;
}

.token-box input {
  width: 132px;
}

.workspace {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 22px;
  flex: 1;
}

.input-page {
  display: grid;
  grid-template-columns: minmax(340px, 520px) minmax(300px, 420px);
  justify-content: center;
  gap: 18px;
}

.result-page {
  display: grid;
  gap: 12px;
  max-width: 1040px;
  margin: 0 auto;
}

.result-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.result-actions .secondary-button,
.result-actions .ghost-button {
  flex: 0 1 180px;
}

.left-panel,
.result-panel,
.case-panel {
  background: var(--panel);
  border: 1px solid rgba(127, 95, 43, 0.26);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.left-panel,
.case-panel {
  padding: 16px;
}

.result-panel {
  min-width: 0;
  overflow: hidden;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(94, 72, 31, 0.25);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
  background: #ead8aa;
}

.tab {
  border: 0;
  border-right: 1px solid rgba(94, 72, 31, 0.2);
  padding: 11px 6px;
  color: var(--ink);
  background: transparent;
  min-width: 0;
}

.tab:last-child {
  border-right: 0;
}

.tab.is-active {
  background: var(--night);
  color: #f8f1df;
}

.cast-form,
.method-block {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.compact {
  gap: 5px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(79, 68, 44, 0.28);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.92);
  color: var(--ink);
  padding: 10px 11px;
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 96px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(30, 107, 92, 0.14);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.hidden {
  display: none;
}

.line-grid {
  display: grid;
  gap: 8px;
}

.line-row {
  display: grid;
  grid-template-columns: 38px 1fr 94px;
  align-items: center;
  gap: 8px;
}

.line-row span {
  color: var(--muted);
  font-size: 13px;
}

.line-row select {
  min-height: 38px;
}

.yao-preview {
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(34, 33, 29, 0.08);
  color: var(--night);
}

.yao-line-visual {
  display: inline-block;
  width: 74px;
  height: 15px;
  --yao-gap: 12px;
  color: var(--night);
  position: relative;
  vertical-align: middle;
}

.yao-line-visual::before,
.yao-line-visual::after {
  content: "";
  position: absolute;
  top: 50%;
  height: 9px;
  background: currentColor;
  border-radius: 1px;
  transform: translateY(-50%);
}

.yao-line-visual.yang::before {
  left: 0;
  right: 0;
}

.yao-line-visual.yang::after {
  display: none;
}

.yao-line-visual.yin::before {
  left: 0;
  width: calc((100% - var(--yao-gap)) / 2);
}

.yao-line-visual.yin::after {
  right: 0;
  width: calc((100% - var(--yao-gap)) / 2);
}

.yao-line-visual.is-moving,
.yao-preview.moving .yao-line-visual {
  color: var(--cinnabar);
}

.button-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.primary-actions {
  padding-top: 2px;
}

.primary-button,
.secondary-button,
.ghost-button,
.icon-button {
  border-radius: 8px;
  border: 1px solid transparent;
  min-height: 42px;
  padding: 10px 14px;
}

.primary-button {
  background: var(--cinnabar);
  color: #fff6e8;
  flex: 1;
}

.secondary-button {
  background: var(--jade);
  color: #f3fff9;
  flex: 1;
}

.ghost-button,
.icon-button {
  background: rgba(255, 255, 255, 0.52);
  border-color: rgba(79, 68, 44, 0.24);
  color: var(--ink);
}

.icon-button {
  width: 40px;
  padding: 0;
  font-size: 20px;
}

.result-header {
  min-height: 148px;
  padding: 20px 22px;
  color: #f8f1df;
  background:
    linear-gradient(110deg, rgba(23, 22, 19, 0.94), rgba(42, 37, 30, 0.82)),
    url("/assets/oracle-seal.svg") right 22px center / 150px 150px no-repeat;
  border-bottom: 4px solid var(--cinnabar);
}

.result-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-bottom: 10px;
  color: rgba(248, 241, 223, 0.78);
  font-size: 14px;
}

.result-title {
  margin: 0;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.result-question {
  margin: 10px 0 0;
  color: rgba(248, 241, 223, 0.82);
  overflow-wrap: anywhere;
}

.result-meta {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 8px;
  background: rgba(248, 241, 223, 0.13);
  color: inherit;
  border: 1px solid rgba(248, 241, 223, 0.2);
  font-size: 13px;
}

.result-body {
  padding: 16px 22px 22px;
  display: grid;
  gap: 14px;
}

.section-title {
  font-size: 18px;
  margin: 0 0 10px;
  color: #3c3428;
}

.plate-section {
  min-width: 0;
}

.primary-plate .section-title {
  font-size: 20px;
}

.summary-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.summary-list li {
  padding: 10px 12px;
  border-left: 4px solid var(--brass);
  background: rgba(255, 255, 255, 0.46);
  border-radius: 0 8px 8px 0;
}

.liuyao-grid {
  display: grid;
  gap: 8px;
}

.liuyao-corpus {
  --plate-line-width: 82px;
  overflow: hidden;
  border: 1px solid rgba(127, 95, 43, 0.22);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.56), rgba(255, 250, 238, 0.38));
}

.liuyao-corpus-head,
.liuyao-corpus-body {
  display: grid;
  grid-template-columns: 58px minmax(82px, 0.8fr) minmax(148px, 1.3fr) 42px minmax(82px, 0.8fr) minmax(148px, 1.3fr);
  align-items: stretch;
  column-gap: 8px;
}

.liuyao-corpus-head {
  padding: 11px 13px 7px;
  color: #5a4d3d;
  font-size: 13px;
  font-weight: 700;
  background: rgba(34, 33, 29, 0.07);
}

.liuyao-corpus-body {
  padding: 12px 13px 14px;
}

.liuyao-stack {
  display: grid;
  grid-template-rows: repeat(6, 32px);
  align-items: center;
  min-width: 0;
}

.liuyao-stack > span {
  display: flex;
  align-items: center;
  min-width: 0;
  color: #2f2a23;
  white-space: nowrap;
}

.spirit-stack > span,
.move-stack > span {
  justify-content: center;
}

.hex-stack > span {
  justify-content: center;
}

.text-stack > span {
  overflow: hidden;
  text-overflow: ellipsis;
}

.move-stack {
  color: var(--cinnabar);
  font-weight: 700;
  font-size: 18px;
}

.changed-text > span {
  color: #5e5548;
}

.liuyao-corpus .yao-line-visual {
  width: var(--plate-line-width);
  --yao-gap: 14px;
}

.classic-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(127, 95, 43, 0.2);
  border-radius: 8px;
  overflow: hidden;
}

.classic-table th,
.classic-table td {
  border-bottom: 1px solid rgba(127, 95, 43, 0.16);
  padding: 10px 9px;
  text-align: left;
  vertical-align: middle;
}

.classic-table th {
  background: rgba(34, 33, 29, 0.08);
  color: #4f473b;
  font-size: 13px;
}

.classic-table tr:last-child td {
  border-bottom: 0;
}

.liuyao-table {
  table-layout: fixed;
}

.liuyao-table th:nth-child(1),
.liuyao-table td:nth-child(1) {
  width: 58px;
}

.liuyao-table th:nth-child(2),
.liuyao-table td:nth-child(2),
.liuyao-table th:nth-child(5),
.liuyao-table td:nth-child(5) {
  width: 104px;
  text-align: center;
}

.liuyao-table th:nth-child(4),
.liuyao-table td:nth-child(4) {
  width: 42px;
  text-align: center;
}

.liuyao-line {
  display: grid;
  grid-template-columns: 54px 78px minmax(98px, 1fr) 56px 52px 52px;
  gap: 8px;
  align-items: center;
  min-height: 42px;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(127, 95, 43, 0.16);
  border-radius: 8px;
}

.liuyao-line .symbol {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: nowrap;
  font-size: 17px;
}

.moving {
  color: var(--cinnabar);
  font-weight: 700;
}

.plate-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.plate-cell,
.lesson-cell,
.case-item {
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(127, 95, 43, 0.16);
  border-radius: 8px;
}

.plate-cell {
  padding: 10px;
  min-height: 66px;
}

.plate-cell b {
  display: block;
  font-size: 18px;
}

.plate-cell span {
  color: var(--muted);
  font-size: 13px;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.lesson-cell {
  padding: 11px;
}

.lesson-cell strong {
  display: block;
  color: var(--jade);
  margin-bottom: 4px;
}

.four-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

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

.case-toolbar h2 {
  margin: 0;
  font-size: 22px;
}

.case-status {
  min-height: 24px;
  color: var(--muted);
  font-size: 13px;
  margin: 10px 0;
}

.case-list {
  display: grid;
  gap: 10px;
  max-height: calc(100vh - 245px);
  overflow: auto;
  padding-right: 2px;
}

.case-item {
  padding: 12px;
  text-align: left;
}

.case-item button {
  all: unset;
  cursor: pointer;
  display: grid;
  gap: 6px;
  width: 100%;
}

.case-item h3 {
  margin: 0;
  font-size: 16px;
  overflow-wrap: anywhere;
}

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

.source-line {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

.empty-state {
  color: var(--muted);
  padding: 24px;
  text-align: center;
}

@media (max-width: 1160px) {
  .input-page {
    grid-template-columns: minmax(340px, 520px);
  }

  .case-list {
    max-height: 360px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (min-width: 781px) {
  .result-page {
    padding-top: 4px;
  }

  .result-actions {
    padding-bottom: 18px;
  }
}

@media (max-width: 780px) {
  .topbar {
    position: static;
    align-items: stretch;
    flex-direction: column;
  }

  .token-box {
    min-width: 0;
  }

  .token-box input {
    flex: 1;
    width: auto;
  }

  .workspace {
    padding: 10px;
  }

  .input-page {
    grid-template-columns: 1fr;
  }

  .result-actions {
    flex-direction: column;
  }

  .result-actions .secondary-button,
  .result-actions .ghost-button {
    flex-basis: auto;
    width: 100%;
  }

  .result-header {
    min-height: 136px;
    padding: 16px 14px;
    background:
      linear-gradient(110deg, rgba(23, 22, 19, 0.95), rgba(42, 37, 30, 0.86)),
      url("/assets/oracle-seal.svg") right 12px top 12px / 112px 112px no-repeat;
  }

  .result-title {
    font-size: 26px;
    max-width: calc(100% - 92px);
  }

  .result-meta {
    gap: 6px;
  }

  .pill {
    min-height: 26px;
    padding: 3px 7px;
    font-size: 12px;
  }

  .result-body {
    padding: 13px 8px 16px;
    gap: 12px;
  }

  .primary-plate .section-title {
    font-size: 17px;
    padding: 0 2px;
  }

  .liuyao-corpus {
    --plate-line-width: clamp(48px, 15vw, 58px);
  }

  .liuyao-corpus-head,
  .liuyao-corpus-body {
    grid-template-columns: 30px minmax(48px, 0.72fr) minmax(70px, 1fr) 20px minmax(48px, 0.72fr) minmax(70px, 1fr);
    column-gap: 4px;
  }

  .liuyao-corpus-head {
    padding: 8px 4px 5px;
    font-size: 11px;
    text-align: center;
  }

  .liuyao-corpus-body {
    padding: 9px 4px 10px;
  }

  .liuyao-stack {
    grid-template-rows: repeat(6, 27px);
    font-size: 12px;
  }

  .liuyao-stack > span {
    min-width: 0;
  }

  .text-stack > span {
    font-size: clamp(10px, 3vw, 12px);
    white-space: nowrap;
  }

  .move-stack {
    font-size: 14px;
  }

  .liuyao-corpus .yao-line-visual {
    height: 13px;
    --yao-gap: 10px;
  }

  .liuyao-corpus .yao-line-visual::before,
  .liuyao-corpus .yao-line-visual::after {
    height: 8px;
  }

  .plate-grid,
  .lesson-grid,
  .four-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}