:root {
  --ink: #1f2937;
  --muted: #667085;
  --paper: #fffdf7;
  --panel: #ffffff;
  --line: #d8dee9;
  --rose: #f2677d;
  --teal: #21a7a5;
  --sun: #f7b733;
  --leaf: #59a96a;
  --violet: #7665d8;
  --sky: #d9f0ff;
  --shadow: 0 18px 45px rgba(31, 41, 55, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 11% 18%, rgba(242, 103, 125, 0.22), transparent 24rem),
    radial-gradient(circle at 89% 12%, rgba(33, 167, 165, 0.2), transparent 21rem),
    linear-gradient(140deg, #fff7e2 0%, #e9f7f7 47%, #f6f0ff 100%);
}

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

button {
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 900;
  background: conic-gradient(from 160deg, var(--rose), var(--sun), var(--teal), var(--violet), var(--rose));
  border: 3px solid rgba(255, 255, 255, 0.75);
  border-radius: 0.85rem;
  box-shadow: var(--shadow);
}

.eyebrow,
.book-kicker {
  margin: 0;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

h2 {
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

h3 {
  font-size: 1rem;
}

.top-actions {
  display: flex;
  gap: 0.55rem;
}

.icon-button,
.tool,
.tab,
.wide-button,
.prompt-row button {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 5px 12px rgba(31, 41, 55, 0.08);
}

.icon-button {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  place-items: center;
  font-size: 1.1rem;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(17rem, 22rem) minmax(24rem, 1fr) minmax(15rem, 19rem);
  gap: 1rem;
  padding: 0 clamp(1rem, 3vw, 2rem) 2rem;
}

.left-panel,
.workspace,
.right-panel {
  min-width: 0;
}

.left-panel,
.right-panel,
.workspace {
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.left-panel,
.right-panel {
  align-self: start;
  padding: 0.9rem;
}

.story-cover,
.right-panel section {
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--paper);
}

.right-panel {
  display: grid;
  gap: 0.85rem;
}

.cover-art {
  position: relative;
  height: 8.5rem;
  overflow: hidden;
  margin-bottom: 0.75rem;
  border-radius: 0.55rem;
  background: linear-gradient(180deg, #1a2a6c 0%, #4b6cb7 48%, #c6ffdd 100%);
}

.moon {
  position: absolute;
  top: 1rem;
  right: 1.3rem;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: #fff6b7;
  box-shadow: 0 0 32px rgba(255, 246, 183, 0.8);
}

.hill {
  position: absolute;
  bottom: -2.1rem;
  width: 72%;
  height: 5.2rem;
  border-radius: 50% 50% 0 0;
}

.hill-one {
  left: -9%;
  background: #46b978;
}

.hill-two {
  right: -12%;
  background: #2f9c8f;
}

.spark {
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 18px #fff;
}

.spark-one {
  top: 2rem;
  left: 2rem;
}

.spark-two {
  top: 4.5rem;
  left: 42%;
}

.spark-three {
  top: 1.6rem;
  left: 57%;
}

label {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
  color: #344054;
  font-size: 0.84rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #cfd7e6;
  border-radius: 0.5rem;
  background: #fff;
  color: var(--ink);
  outline: none;
}

input,
select {
  min-height: 2.5rem;
  padding: 0 0.7rem;
}

textarea {
  min-height: 5rem;
  padding: 0.7rem;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(33, 167, 165, 0.16);
}

.small-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
  margin: 0.8rem 0;
}

.tab {
  min-height: 2.35rem;
  padding: 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 800;
}

.tab.active,
.tool.active {
  color: #fff;
  background: #255f85;
  border-color: #255f85;
}

.tab-panel,
.view {
  display: none;
}

.tab-panel.active,
.view.active {
  display: block;
}

.tab-panel {
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: #fff;
}

.prompt-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.prompt-row button {
  min-height: 2rem;
  padding: 0 0.65rem;
  color: #194c53;
  font-size: 0.8rem;
  font-weight: 800;
  background: #e9fbfa;
}

.wide-button {
  width: 100%;
  min-height: 2.55rem;
  color: #fff;
  font-weight: 900;
  background: var(--rose);
  border-color: var(--rose);
}

.chapter-list {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.chapter-item {
  display: grid;
  grid-template-columns: 2rem 1fr;
  align-items: center;
  gap: 0.5rem;
}

.chapter-number {
  display: grid;
  height: 2rem;
  place-items: center;
  color: #fff;
  font-weight: 900;
  background: var(--violet);
  border-radius: 0.45rem;
}

.workspace {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: calc(100vh - 7rem);
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.toolbar-spacer {
  flex: 1;
}

.tool {
  min-height: 2.3rem;
  padding: 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 850;
}

.tool.ghost {
  color: #255f85;
  background: #eef8ff;
}

.draft-area {
  display: block;
  width: 100%;
  min-height: calc(100vh - 11rem);
  height: 100%;
  padding: clamp(1rem, 3vw, 2rem);
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(#fffdf7 2.05rem, #e7eef8 2.1rem) 0 0 / 100% 2.1rem,
    #fffdf7;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.12rem;
  line-height: 2.1rem;
  resize: none;
}

.outline-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  padding: 1rem;
}

.outline-grid article,
.book-preview,
.illustration-controls,
.illustration-preview-card {
  min-height: 22rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--paper);
}

#storyMap,
.question-list {
  padding-left: 1.35rem;
}

#storyMap li,
.question-list li {
  margin-bottom: 0.7rem;
}

.book-preview {
  max-width: 44rem;
  margin: 1rem auto;
  padding: clamp(1.1rem, 4vw, 2rem);
  background:
    linear-gradient(90deg, rgba(247, 183, 51, 0.17), transparent 14%),
    var(--paper);
}

.book-preview h2 {
  margin-bottom: 0.3rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 6vw, 3.7rem);
}

.byline {
  color: var(--muted);
}

.preview-text {
  white-space: pre-wrap;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  line-height: 1.75;
}

.illustration-studio {
  display: grid;
  grid-template-columns: minmax(18rem, 0.8fr) minmax(21rem, 1.2fr);
  gap: 1rem;
  padding: 1rem;
}

.illustration-controls textarea {
  min-height: 6.25rem;
}

.illustration-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.35rem;
}

.illustration-actions .wide-button {
  width: auto;
  min-width: 12rem;
  padding: 0 0.85rem;
}

.illustration-canvas {
  overflow: hidden;
  border: 1px solid #cfd7e6;
  border-radius: 0.65rem;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.illustration-canvas svg {
  display: block;
  width: 100%;
  height: auto;
}

.illustration-canvas img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.illustration-status {
  min-height: 1.35rem;
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.prompt-output {
  margin-top: 0.85rem;
  padding: 0.9rem;
  border: 1px solid #cfd7e6;
  border-radius: 0.65rem;
  background: #fff;
}

.prompt-output p {
  margin-bottom: 0;
  color: #344054;
  font-size: 0.92rem;
  line-height: 1.6;
}

.word-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.word-chip {
  border: 0;
  border-radius: 999px;
  padding: 0.45rem 0.65rem;
  color: #12333b;
  font-size: 0.8rem;
  font-weight: 900;
  background: #ddf7f6;
}

.meter {
  height: 0.8rem;
  overflow: hidden;
  border-radius: 999px;
  background: #e6eaf2;
}

#meterFill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--rose), var(--sun), var(--leaf));
  transition: width 180ms ease;
}

#meterText {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.87rem;
}

.check-row {
  grid-template-columns: auto 1fr;
  align-items: center;
  margin-bottom: 0.55rem;
  font-weight: 750;
}

.check-row input {
  width: 1rem;
  min-height: 1rem;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  max-width: min(26rem, calc(100vw - 2rem));
  padding: 0.8rem 1rem;
  border-radius: 0.55rem;
  color: #fff;
  background: #255f85;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1050px) {
  .app-shell {
    grid-template-columns: minmax(17rem, 21rem) 1fr;
  }

  .right-panel {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .topbar,
  .app-shell {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

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

  .app-shell,
  .right-panel,
  .outline-grid,
  .illustration-studio {
    grid-template-columns: 1fr;
  }

  .workspace {
    min-height: 34rem;
  }

  .toolbar {
    flex-wrap: wrap;
  }

  .toolbar-spacer {
    display: none;
  }

  .draft-area {
    min-height: 31rem;
  }
}

@media print {
  body {
    background: #fff;
  }

  .topbar,
  .left-panel,
  .right-panel,
  .toolbar,
  .toast {
    display: none !important;
  }

  .app-shell,
  .workspace,
  .view,
  #previewView {
    display: block !important;
    padding: 0;
    min-height: auto;
    border: 0;
    box-shadow: none;
  }

  .book-preview {
    max-width: none;
    margin: 0;
    border: 0;
  }
}