:root {
  color-scheme: light;
  --bg: #f3f4f2;
  --bg-2: #e8eee9;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #ffffff;
  --surface-soft: #f4f7f5;
  --ink: #101918;
  --ink-soft: #2b3a37;
  --muted: #70807c;
  --line: rgba(30, 54, 49, 0.13);
  --line-strong: rgba(30, 54, 49, 0.2);
  --accent: #0d7c6b;
  --accent-2: #2364aa;
  --accent-3: #b75d38;
  --accent-soft: #e6f5f1;
  --danger: #a6423a;
  --warning: #a06a12;
  --ok: #267a4f;
  --shadow: 0 24px 80px rgba(28, 45, 42, 0.14);
  --shadow-soft: 0 14px 36px rgba(28, 45, 42, 0.08);
  --radius: 18px;
  font-family:
    "Noto Sans SC", Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue",
    "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1413;
  --bg-2: #17201d;
  --surface: rgba(22, 30, 28, 0.86);
  --surface-solid: #151d1b;
  --surface-soft: #1c2825;
  --ink: #edf4f1;
  --ink-soft: #cbd9d5;
  --muted: #93a49f;
  --line: rgba(221, 235, 230, 0.13);
  --line-strong: rgba(221, 235, 230, 0.22);
  --accent: #4cc5ad;
  --accent-2: #80aef0;
  --accent-3: #e09b72;
  --accent-soft: rgba(76, 197, 173, 0.12);
  --danger: #ff8a7f;
  --warning: #e9b85f;
  --ok: #84d6a8;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  --shadow-soft: 0 14px 34px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(13, 124, 107, 0.12), transparent 34%),
    linear-gradient(225deg, rgba(183, 93, 56, 0.08), transparent 42%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  color: var(--ink);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(16, 25, 24, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 25, 24, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 70%);
}

[data-theme="dark"] body::before {
  background-image:
    linear-gradient(rgba(237, 244, 241, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 244, 241, 0.045) 1px, transparent 1px);
}

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

button {
  -webkit-tap-highlight-color: transparent;
}

.app-shell {
  width: min(1500px, calc(100% - 48px));
  margin: 0 auto;
  padding: 22px 0 32px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, var(--surface-solid), var(--surface-soft));
  color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.eyebrow,
.section-kicker {
  margin: 0 0 7px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.subtitle {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

h2 {
  margin-bottom: 0;
  font-size: 23px;
  line-height: 1.25;
}

h3 {
  margin-bottom: 0;
  font-size: 18px;
  line-height: 1.35;
}

.theme-toggle {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.mode-switch {
  display: inline-flex;
  gap: 6px;
  margin: 0 0 18px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: color-mix(in srgb, var(--surface-solid) 72%, transparent);
  padding: 5px;
  box-shadow: var(--shadow-soft);
}

.mode-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  font-weight: 900;
  padding: 0 15px;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

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

.mode-tab.is-active {
  border-color: color-mix(in srgb, var(--accent) 16%, var(--line));
  background: var(--accent-soft);
  color: var(--accent);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(0, 1.42fr);
  gap: 28px;
  align-items: start;
}

.input-panel,
.output-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.input-panel {
  position: sticky;
  top: 22px;
  padding: 22px;
}

.output-panel {
  min-height: 640px;
  padding: 24px;
  position: relative;
}

.block-title,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.field {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.field span {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 800;
}

.field-hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  margin: 10px 0 0;
}

.copy-input-section {
  margin-top: 18px;
  border-top: 0;
  padding-top: 0;
}

.input-panel > .copy-input-section:first-child {
  margin-top: 0;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.scenario-section {
  margin-top: 0;
}

.scenario-guide {
  max-width: 100%;
  margin-top: 12px;
  font-weight: 700;
}

.validation-callout {
  white-space: pre-line;
  margin-top: 14px;
  border: 1px solid color-mix(in srgb, var(--danger) 34%, var(--line));
  border-radius: 14px;
  background: color-mix(in srgb, var(--danger) 10%, var(--surface-solid));
  color: var(--danger);
  padding: 13px 14px;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.65;
}

.validation-callout[data-tone="advice"] {
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
  background: color-mix(in srgb, var(--accent-soft) 70%, var(--surface-solid));
  color: color-mix(in srgb, var(--accent) 70%, var(--ink));
}

textarea,
input[type="text"],
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  color: var(--ink);
  outline: none;
  padding: 14px 15px;
  line-height: 1.55;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

textarea {
  resize: vertical;
  min-height: 190px;
}

#businessScenario {
  min-height: 104px;
  resize: vertical;
}

#copyContent {
  min-height: 74px;
  resize: vertical;
}

#triggerScenario {
  min-height: 150px;
}

#templateContext {
  min-height: 96px;
}

textarea::placeholder,
input::placeholder {
  color: color-mix(in srgb, var(--muted) 78%, transparent);
}

textarea:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
  background: var(--surface-solid);
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--danger) 14%, transparent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.actions {
  justify-content: start;
  margin-top: 28px;
}

.primary-button,
.secondary-button,
.ghost-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  border-radius: 13px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 800;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #0b6659);
  color: #fff;
  padding: 0 20px;
  box-shadow: 0 16px 32px color-mix(in srgb, var(--accent) 24%, transparent);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.78;
  transform: none;
}

.secondary-button,
.ghost-button,
.icon-button {
  background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  color: var(--ink-soft);
  border-color: var(--line);
  padding: 0 14px;
}

.icon-button {
  min-height: 34px;
  border-radius: 11px;
  font-size: 13px;
}

.primary-button:hover:not(:disabled),
.secondary-button:hover,
.ghost-button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.secondary-button:hover,
.ghost-button:hover,
.icon-button:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.idle-state,
.loading-state {
  min-height: 642px;
  display: grid;
  place-items: center;
  text-align: center;
}

.state-card {
  width: min(520px, 100%);
  padding: 0 24px;
}

.state-icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 26px;
  border-radius: 24px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 24px;
}

.loading-icon i {
  animation: spin 900ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.state-card h2 {
  margin: 0 0 10px;
  font-family: "Noto Serif SC", serif;
  font-size: 36px;
}

.state-card p {
  color: var(--muted);
  line-height: 1.75;
  margin: 0;
  font-size: 18px;
}

.state-hints {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.state-hints span {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--surface-solid) 78%, transparent);
  font-size: 14px;
  font-weight: 900;
  padding: 10px 15px;
}

.result-content {
  animation: rise 260ms ease both;
}

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

.result-block,
.highlight-block {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 16px;
}

.result-content > .result-block:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.result-block p,
.highlight-block p,
.rule-list,
.key-issues {
  color: var(--ink-soft);
  line-height: 1.65;
}

.audit-card {
  margin-top: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
  border-radius: 16px;
  background: color-mix(in srgb, var(--accent-soft) 64%, var(--surface-solid));
  padding: 16px;
}

.audit-card p {
  margin: 0;
  font-weight: 800;
}

.audit-card p + p {
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.key-issues {
  margin: 12px 0 0;
  padding-left: 22px;
}

.key-issues li {
  padding-left: 4px;
  margin-top: 8px;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-solid);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 11px 13px;
  text-align: left;
  vertical-align: top;
  line-height: 1.55;
}

th {
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 900;
}

td {
  color: var(--ink-soft);
  font-size: 14px;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.severity-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  padding: 4px 9px;
}

.severity-high {
  background: color-mix(in srgb, var(--danger) 14%, transparent);
  color: var(--danger);
}

.severity-mid {
  background: color-mix(in srgb, var(--warning) 16%, transparent);
  color: var(--warning);
}

.severity-low {
  background: color-mix(in srgb, var(--ok) 14%, transparent);
  color: var(--ok);
}

.highlight-block {
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
  border-radius: 18px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent 48%),
    var(--surface-solid);
  padding: 18px;
}

.recommendation p {
  margin: 12px 0 0;
  color: color-mix(in srgb, var(--accent) 62%, var(--ink));
  font-family: "Noto Sans SC", sans-serif;
  font-size: clamp(17px, 1.28vw, 21px);
  font-weight: 800;
  line-height: 1.6;
}

.rule-list {
  padding-left: 20px;
  margin-bottom: 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 16px);
  opacity: 0;
  pointer-events: none;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface-solid);
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 800;
  box-shadow: var(--shadow-soft);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1040px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .input-panel {
    position: static;
  }

  .output-panel {
    min-height: 540px;
  }

  .idle-state {
    min-height: 480px;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 28px, 720px);
    padding-top: 22px;
  }

  .brand-block {
    align-items: flex-start;
  }

  .brand-mark {
    display: none;
  }

  .topbar {
    align-items: flex-start;
  }

  h1 {
    font-size: 34px;
  }

  .form-grid,
  .section-title-row {
    display: block;
  }

  .section-title-row .ghost-button {
    margin-top: 14px;
  }

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

  .mode-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .input-panel,
  .output-panel {
    border-radius: 16px;
    padding: 20px;
  }

  .state-card {
    padding: 28px 20px;
  }
}