/* Hallmark · genre: modern-minimal · macrostructure: teacher workbench · designed-as-app
 * Hallmark · pre-emit critique: P4 H5 E4 S5 R5 V4
 */
:root {
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --color-ink: #17211f;
  --color-muted: #5d6d66;
  --color-subtle: #8a9791;
  --color-paper: #f4f2eb;
  --color-panel: #fffefa;
  --color-panel-strong: #eeeae0;
  --color-field: #ffffff;
  --color-editor: #fbfaf6;
  --color-line: #d8d0bf;
  --color-line-strong: #b9ae9a;
  --color-accent: #126450;
  --color-accent-strong: #083f33;
  --color-accent-soft: #dceee8;
  --color-warm: #9c5735;
  --color-warm-soft: #f4dfd1;
  --color-focus: #1f5fd0;
  --color-accent-rgb: 18, 100, 80;
  --shadow-panel: 0 22px 60px rgba(44, 38, 27, 0.11);
  --shadow-soft: 0 10px 30px rgba(44, 38, 27, 0.08);
  --radius-sm: 6px;
  --radius-md: 8px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 0;
  min-height: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(var(--color-accent-rgb), 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(var(--color-accent-rgb), 0.045) 1px, transparent 1px),
    var(--color-paper);
  background-size: 32px 32px;
  color: var(--color-ink);
  font-family: var(--font-ui);
}

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

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  padding: var(--space-6);
}

.topbar {
  align-items: center;
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
  margin: 0 auto var(--space-4);
  max-width: 1540px;
  min-width: 0;
}

.brand-lockup {
  align-items: center;
  display: flex;
  gap: var(--space-4);
  min-width: 0;
}

.brand-logo {
  align-items: center;
  background: var(--color-field);
  border: 1px solid var(--color-line);
  border-radius: 7px;
  box-shadow: var(--shadow-soft);
  flex: 0 0 58px;
  height: 58px;
  object-fit: contain;
  padding: 7px;
  width: 58px;
}

.eyebrow {
  color: var(--color-warm);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.2;
  margin: 0 0 var(--space-1);
  text-transform: uppercase;
}

h1,
h2 {
  letter-spacing: 0;
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

h1 {
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.05;
}

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

.brand-subtitle {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.45;
  margin: var(--space-2) 0 0;
  max-width: 620px;
}

.topbar-actions,
.compact-actions {
  display: flex;
  gap: var(--space-2);
  white-space: nowrap;
}

.brief-strip {
  background: color-mix(in srgb, var(--color-panel) 72%, transparent);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  display: grid;
  gap: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 auto var(--space-5);
  max-width: 1540px;
  overflow: hidden;
}

.brief-strip div {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
  padding: var(--space-4) var(--space-5);
}

.brief-strip div + div {
  border-left: 1px solid var(--color-line);
}

.brief-strip strong {
  color: var(--color-ink);
  font-size: 14px;
}

.brief-strip span {
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.4;
  min-width: 0;
  overflow-wrap: anywhere;
}

.origin-note {
  background: color-mix(in srgb, var(--color-accent-soft) 55%, var(--color-panel));
  border: 1px solid color-mix(in srgb, var(--color-accent) 22%, var(--color-line));
  border-radius: var(--radius-md);
  display: grid;
  gap: var(--space-2);
  margin: 0 auto var(--space-5);
  max-width: 1540px;
  padding: var(--space-4) var(--space-5);
}

.origin-note summary {
  color: var(--color-accent-strong);
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
}

.origin-note p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.65;
  margin: 0;
  max-width: 1120px;
}

.origin-note a {
  color: var(--color-accent-strong);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.workspace {
  display: grid;
  align-items: start;
  gap: var(--space-5);
  grid-template-columns: minmax(220px, 270px) minmax(380px, 0.96fr) minmax(420px, 1.04fr);
  margin: 0 auto;
  max-width: 1540px;
}

.scenario-panel,
.form-panel,
.output-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
  min-width: 0;
}

.scenario-panel {
  align-self: start;
  overflow: hidden;
  position: sticky;
  top: var(--space-5);
}

.panel-heading,
.section-heading {
  align-items: center;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
}

.compact-select {
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 800;
  max-width: 128px;
  min-height: 36px;
  padding: 7px 9px;
}

.scenario-list {
  display: grid;
  gap: var(--space-1);
  max-height: calc(100vh - 235px);
  overflow: auto;
  padding: var(--space-2);
}

.scenario-card {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  display: grid;
  gap: var(--space-1);
  padding: 11px var(--space-3);
  position: relative;
  text-align: left;
  width: 100%;
}

.scenario-card:hover,
.scenario-card:focus-visible {
  background: var(--color-panel-strong);
  border-color: var(--color-line);
  outline: none;
}

.scenario-card.active {
  background: linear-gradient(90deg, var(--color-accent-soft), color-mix(in srgb, var(--color-panel) 86%, transparent));
  border-color: color-mix(in srgb, var(--color-accent) 36%, transparent);
}

.scenario-card.active::before {
  background: var(--color-accent);
  border-radius: 999px;
  bottom: 10px;
  content: "";
  left: 5px;
  position: absolute;
  top: 10px;
  width: 3px;
}

.scenario-name {
  font-weight: 800;
}

.scenario-desc {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.4;
}

.prompt-form {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5);
}

.dynamic-fields {
  display: grid;
  gap: var(--space-3);
}

.field-row {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

label {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
}

label span,
legend {
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 800;
}

input,
select,
textarea {
  background: color-mix(in srgb, var(--color-field) 86%, transparent);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  min-width: 0;
  padding: 11px 12px;
  width: 100%;
}

textarea {
  line-height: 1.55;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-focus);
  outline: 2px solid color-mix(in srgb, var(--color-focus) 22%, transparent);
  outline-offset: 1px;
}

.option-grid {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: var(--space-4);
}

.option-grid legend {
  padding: 0 var(--space-2);
}

.check-option {
  align-items: center;
  display: flex;
  gap: var(--space-2);
  min-height: 32px;
}

.check-option input {
  accent-color: var(--color-accent);
  width: auto;
}

.status-pill {
  background: var(--color-accent-soft);
  border-radius: 999px;
  color: var(--color-accent-strong);
  font-size: 12px;
  font-weight: 800;
  padding: 6px 10px;
  white-space: nowrap;
}

.primary-button,
.ghost-button {
  align-items: center;
  border-radius: var(--radius-sm);
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-height: 42px;
  padding: 10px 15px;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.primary-button {
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  color: var(--color-panel);
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  outline: none;
  transform: translateY(-1px);
}

.ghost-button {
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  color: var(--color-ink);
}

.ghost-button:hover,
.ghost-button:focus-visible {
  background: var(--color-panel-strong);
  outline: none;
}

.output-panel {
  display: grid;
  grid-template-rows: auto minmax(390px, 1fr) auto auto auto auto minmax(150px, auto);
  min-height: 760px;
  overflow: hidden;
  position: sticky;
  top: var(--space-5);
}

.prompt-output {
  background:
    linear-gradient(90deg, rgba(var(--color-accent-rgb), 0.035) 1px, transparent 1px),
    var(--color-editor);
  background-size: 44px 44px;
  border: 0;
  border-bottom: 1px solid var(--color-line);
  border-radius: 0;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  min-height: 390px;
  padding: var(--space-6);
  resize: none;
}

.quality-panel,
.next-actions {
  border-bottom: 1px solid var(--color-line);
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
}

.quality-heading,
.next-actions {
  color: var(--color-muted);
  font-size: 13px;
}

.quality-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.quality-heading strong,
.next-actions strong {
  color: var(--color-ink);
}

.quality-list {
  display: grid;
  gap: var(--space-1);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.quality-list li {
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.35;
  padding: 5px 7px;
}

.quality-list .passed {
  background: color-mix(in srgb, var(--color-accent-soft) 68%, transparent);
  color: var(--color-accent-strong);
}

.quality-list .todo {
  background: var(--color-warm-soft);
  color: var(--color-warm);
}

.next-action-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.result-meta {
  color: var(--color-muted);
  display: flex;
  font-size: 13px;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
}

.library-tabs {
  background: var(--color-panel-strong);
  border-bottom: 1px solid var(--color-line);
  border-top: 1px solid var(--color-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: var(--space-2);
  gap: var(--space-2);
}

.tab-button {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-weight: 800;
  min-height: 36px;
}

.tab-button.active {
  background: var(--color-panel);
  border-color: var(--color-line);
  color: var(--color-accent-strong);
}

.saved-list {
  display: grid;
  gap: var(--space-2);
  max-height: 250px;
  overflow: auto;
  padding: var(--space-3);
}

.saved-item {
  background: color-mix(in srgb, var(--color-field) 84%, transparent);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
}

.saved-item strong {
  font-size: 14px;
}

.saved-item p {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.45;
  margin: 0;
}

.saved-actions {
  display: flex;
  gap: var(--space-2);
}

.small-button {
  background: var(--color-panel-strong);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 800;
  min-height: 32px;
  padding: 6px 9px;
}

.empty-state {
  align-items: center;
  color: var(--color-muted);
  display: flex;
  font-size: 13px;
  justify-content: center;
  min-height: 96px;
  text-align: center;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .output-panel {
    grid-column: 1 / -1;
    position: static;
  }

  .scenario-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: var(--space-3);
  }

  .topbar,
  .section-heading,
  .panel-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .brand-lockup {
    align-items: center;
    flex-direction: row;
  }

  .topbar-actions,
  .compact-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    width: 100%;
  }

  .workspace,
  .field-row,
  .option-grid,
  .brief-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .brief-strip {
    margin-bottom: var(--space-3);
  }

  .brief-strip div {
    padding: 11px var(--space-4);
  }

  .origin-note {
    margin-bottom: var(--space-3);
    padding: var(--space-3) var(--space-4);
  }

  .origin-note p {
    font-size: 13px;
    line-height: 1.55;
    margin-top: var(--space-2);
  }

  .brief-strip div + div {
    border-left: 0;
    border-top: 1px solid var(--color-line);
  }

  .scenario-list {
    display: flex;
    gap: var(--space-2);
    grid-template-columns: minmax(0, 1fr);
    max-height: none;
    overflow-x: auto;
    padding: var(--space-2);
    scroll-snap-type: x proximity;
  }

  .scenario-card {
    flex: 0 0 230px;
    scroll-snap-align: start;
  }

  .output-panel {
    min-height: auto;
  }

  .prompt-output {
    min-height: 360px;
    padding: var(--space-4);
  }

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

  .quality-list,
  .next-action-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 22px;
  }

  .primary-button,
  .ghost-button {
    padding-left: 8px;
    padding-right: 8px;
  }
}