:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #f9fbff;
  --ink: #111827;
  --text: #253044;
  --muted: #687386;
  --line: #dce3ee;
  --line-strong: #c5cfdf;
  --blue: #0b5fff;
  --blue-dark: #0844b5;
  --blue-soft: #eaf1ff;
  --teal: #04756f;
  --teal-soft: #e8f7f5;
  --amber: #a96300;
  --amber-soft: #fff3dd;
  --rose: #b3264d;
  --premium: #7a3df0;
  --premium-soft: #f1ebff;
  --shadow: 0 18px 46px rgba(18, 27, 44, 0.08);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background: linear-gradient(180deg, rgba(11, 95, 255, 0.06), transparent 260px), var(--bg);
  color: var(--ink);
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, p { margin: 0; }

.shell {
  width: min(1380px, calc(100% - 36px));
  margin: 0 auto;
  padding: 22px 0 34px;
}

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

.brand {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--blue);
  color: #fff;
  box-shadow: 0 14px 30px rgba(11, 95, 255, 0.22);
}

.brand-icon svg { width: 34px; height: 34px; }

h1 {
  font-size: clamp(1.7rem, 2.2vw, 2.2rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.brand p {
  margin-top: 5px;
  color: var(--muted);
  line-height: 1.45;
}

.top-actions, .result-actions, .inline-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, 460px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.builder, .result {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.builder {
  padding: 18px;
  position: sticky;
  top: 16px;
}

.result { overflow: hidden; }

.builder-head, .result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.result-head {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.eyebrow {
  display: block;
  margin-bottom: 4px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h2 { font-size: 1.08rem; line-height: 1.25; }
h3 { font-size: 1rem; line-height: 1.25; }

.progress {
  width: 118px;
  display: grid;
  gap: 7px;
  justify-items: end;
  color: var(--blue-dark);
}

.progress strong { font-size: 0.92rem; }
.progress span {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #e7edf6;
  overflow: hidden;
}
.progress i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--blue));
  transition: width 180ms ease;
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 18px 0;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f6f8fc;
}

.mode-switch button,
.view-tabs button {
  min-height: 38px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 850;
}

.mode-switch button.is-active,
.view-tabs button.is-active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 7px rgba(18, 27, 44, 0.1);
}

form { display: grid; }

.mode-panel {
  display: none;
  gap: 14px;
}

.mode-panel.is-active { display: grid; }

.section-copy {
  display: grid;
  gap: 5px;
}

.section-copy p {
  color: var(--muted);
  line-height: 1.45;
}

.example-strip, .chip-suggestions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.example-strip button, .chip-suggestions button {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 760;
}

.example-strip button:hover, .chip-suggestions button:hover {
  border-color: var(--blue);
  background: var(--blue-soft);
  color: var(--blue-dark);
}

.field, .chip-field {
  display: grid;
  gap: 7px;
}

.field span, .chip-field > label, legend {
  color: #202a3b;
  font-size: 0.9rem;
  font-weight: 820;
}

input, select, textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 11px 13px;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

textarea {
  min-height: 96px;
  line-height: 1.45;
  resize: vertical;
}

.optional-field textarea { min-height: 78px; }

input:focus, select:focus, textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(11, 95, 255, 0.12);
}

select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, #727d90 50%),
    linear-gradient(135deg, #727d90 50%, transparent 50%);
  background-position: calc(100% - 19px) 20px, calc(100% - 14px) 20px;
  background-repeat: no-repeat;
  background-size: 5px 5px;
  padding-right: 38px;
}

.field-grid, .pro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.pro-wide { grid-column: 1 / -1; }

.range-row {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 10px;
  align-items: center;
}

input[type="range"] {
  padding: 0;
  min-height: 30px;
  border: 0;
  box-shadow: none;
  background: transparent;
  accent-color: var(--blue);
}

output {
  min-height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--blue-dark);
  background: #fff;
  font-weight: 850;
}

.chip-input {
  display: grid;
  grid-template-columns: 1fr 44px;
  gap: 8px;
}

.chips {
  min-height: 38px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 7px 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 760;
}

.chip button {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: #e5ebf3;
  color: #526075;
  padding: 0;
}

.option-group, .toggle-group {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.option-group label, .toggle-group label {
  min-height: 32px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 720;
}

.option-group input, .toggle-group input {
  width: 17px;
  height: 17px;
  min-height: auto;
  padding: 0;
  accent-color: var(--blue);
}

.primary-btn, .secondary-btn, .icon-btn, .premium-btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius);
  font-weight: 850;
  white-space: nowrap;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease, transform 120ms ease;
}

.primary-btn {
  border: 1px solid transparent;
  background: var(--blue);
  color: #fff;
  padding: 0 14px;
}

.primary-btn:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

.secondary-btn, .icon-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: #2a3447;
}

.secondary-btn { padding: 0 13px; }
.icon-btn { width: 42px; padding: 0; }

.secondary-btn:hover, .icon-btn:hover {
  border-color: var(--line-strong);
  background: var(--surface-soft);
  color: var(--blue-dark);
}

.premium-btn {
  border: 1px solid transparent;
  background: var(--premium);
  color: #fff;
  padding: 0 14px;
}

.premium-btn:hover {
  background: #612bd0;
  transform: translateY(-1px);
}

.result-body {
  display: grid;
  gap: 16px;
  padding: 18px 20px 22px;
}

.summary-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 780;
}

.question-box {
  display: grid;
  gap: 6px;
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  background: var(--teal-soft);
  padding: 13px 14px;
  color: #153d3a;
}

.question-box p { line-height: 1.45; }

.premium-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  border: 1px solid #d6c4ff;
  border-radius: var(--radius);
  background: var(--premium-soft);
  padding: 14px;
  color: #312056;
}

.premium-banner p {
  color: #4b3a73;
  line-height: 1.4;
  margin-top: 3px;
}

.view-tabs {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f6f8fc;
  justify-self: start;
  flex-wrap: wrap;
}

.view-tabs button { padding: 0 12px; }

.view-panel { display: none; }
.view-panel.is-active { display: grid; }

.outline-list { border-top: 1px solid var(--line); }

.chapter {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.chapter-number {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}

.chapter.formal .chapter-number {
  background: #e7ecf4;
  color: #586477;
}

.chapter h3 { outline: none; }

.chapter-meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.35;
}

.chapter ul {
  list-style: none;
  display: grid;
  gap: 7px;
  margin: 10px 0 0;
  padding: 0;
  color: #515c70;
}

.chapter li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  line-height: 1.38;
}

.chapter li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--line-strong);
  margin-top: 0.55em;
}

.locked-text {
  display: inline-block;
  filter: blur(4px);
  user-select: none;
  opacity: 0.62;
}

.lock-note {
  display: inline-flex;
  align-items: center;
  margin-left: 8px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--premium-soft);
  color: var(--premium);
  font-size: 0.74rem;
  font-weight: 850;
}

.page-chip {
  white-space: nowrap;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  padding: 5px 8px;
  font-size: 0.78rem;
  font-weight: 850;
}

.premium-grid {
  display: grid;
  gap: 12px;
}

.premium-card {
  display: grid;
  gap: 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 14px;
}

.premium-card h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.premium-card .premium-lock {
  color: var(--premium);
  font-size: 0.78rem;
  font-weight: 850;
}

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

.recommendation-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  color: var(--text);
  line-height: 1.38;
}

.recommendation-list li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--premium);
  margin-top: 0.5em;
}

.premium-card.locked .recommendation-list span {
  filter: blur(4px);
  opacity: 0.62;
  user-select: none;
}

.premium-cta-card {
  display: grid;
  gap: 10px;
  border: 1px solid #d6c4ff;
  border-radius: var(--radius);
  background: var(--premium-soft);
  padding: 14px;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  line-height: 1.42;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--teal);
  margin-top: 0.42em;
}

.dot.warn { background: var(--amber); }

.plain-output {
  width: 100%;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: #fff;
  color: var(--text);
  line-height: 1.45;
  white-space: pre-wrap;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  translate: -50% 22px;
  opacity: 0;
  pointer-events: none;
  border-radius: var(--radius);
  background: #151b26;
  color: #fff;
  padding: 11px 14px;
  box-shadow: 0 16px 38px rgba(16, 24, 40, 0.22);
  font-weight: 850;
  transition: opacity 160ms ease, translate 160ms ease;
  z-index: 30;
}

.toast.show {
  opacity: 1;
  translate: -50% 0;
}

@media (max-width: 1080px) {
  .workspace { grid-template-columns: 1fr; }
  .builder { position: static; }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 1380px);
    padding-top: 14px;
  }

  .topbar, .builder-head, .result-head, .premium-banner {
    align-items: stretch;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .brand { grid-template-columns: 1fr; }
  .brand-icon { width: 54px; height: 54px; }

  .top-actions, .result-actions { justify-content: stretch; }
  .top-actions > *, .result-actions > * { flex: 1 1 auto; }

  .field-grid, .pro-grid { grid-template-columns: 1fr; }
  .builder, .result-body, .result-head { padding: 16px; }

  .chapter { grid-template-columns: 38px minmax(0, 1fr); }
  .page-chip {
    grid-column: 2;
    justify-self: start;
  }
}

@media print {
  body { background: #fff; }
  .topbar, .builder, .result-head, .view-tabs, .premium-banner, .toast { display: none; }
  .shell { width: 100%; padding: 0; }
  .workspace { display: block; }
  .result { border: 0; box-shadow: none; }
}

@media (min-width: 980px) and (min-height: 680px) {
  .workspace {
    gap: 18px;
  }

  .builder {
    top: 92px;
    max-height: calc(100vh - 112px);
    overflow: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    padding: 16px;
  }

  .mode-switch {
    margin: 12px 0;
  }

  .mode-panel {
    gap: 11px;
  }

  input,
  select,
  textarea {
    min-height: 42px;
    padding: 9px 12px;
  }

  textarea {
    height: 68px;
    min-height: 68px;
  }

  .optional-field textarea {
    min-height: 62px;
  }
}