:root {
  --ink: #18202a;
  --muted: #66717c;
  --line: #e5e7eb;
  --line-strong: #d0d5dd;
  --page: #fbfaf8;
  --surface: #ffffff;
  --surface-warm: #fff5f0;
  --surface-cool: #eefbfc;
  --coral: #e95f4f;
  --coral-dark: #a8372c;
  --cyan: #1d9ca6;
  --cyan-dark: #08727b;
  --gold: #b98022;
  --shadow: 0 20px 45px rgba(24, 32, 42, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--ink);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
.idea-card:focus-visible {
  outline: 3px solid rgba(29, 156, 166, 0.26);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 24px;
  min-height: 76px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.brand,
.main-nav,
.board-meta,
.card-topline,
.board-actions,
.action-stack {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  width: fit-content;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  letter-spacing: 0;
}

.brand-text {
  font-size: 18px;
}

.main-nav {
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a:hover {
  color: var(--coral-dark);
}

.header-button,
.primary-button,
.secondary-button,
.board-actions button,
.card-topline button {
  min-height: 42px;
  border: 0;
  border-radius: 7px;
  font-weight: 800;
}

.header-button,
.secondary-button,
.board-actions button {
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

.header-button:hover,
.secondary-button:hover,
.board-actions button:hover {
  border-color: var(--cyan);
  color: var(--cyan-dark);
}

main {
  padding: 28px;
}

.tool-shell {
  display: grid;
  grid-template-columns: minmax(260px, 330px) minmax(0, 1fr) minmax(240px, 300px);
  gap: 18px;
  max-width: 1480px;
  margin: 0 auto;
  align-items: stretch;
}

.setup-panel,
.board-panel,
.saved-panel,
.content-block,
.examples-section,
.faq-section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.setup-panel,
.saved-panel {
  padding: 22px;
}

.setup-panel h1 {
  margin: 4px 0 10px;
  color: #111827;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 0.98;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--coral-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro,
.review-note,
.section-heading p,
.content-block p,
.examples-grid p,
.faq-item p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.intro {
  margin: 0 0 22px;
}

.field-group,
.control-block {
  display: grid;
  gap: 9px;
  margin-bottom: 16px;
}

.field-group label,
.control-block h2 {
  margin: 0;
  color: #2f3945;
  font-size: 13px;
  font-weight: 800;
}

input,
select {
  inline-size: stretch;
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  padding: 0 13px;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #f7f8fa;
}

.segmented button {
  min-height: 36px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.segmented button.is-active {
  background: var(--ink);
  color: #fff;
}

.chip-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.chip {
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fff;
  color: var(--muted);
  font-weight: 800;
}

.chip.is-active {
  border-color: var(--cyan);
  background: var(--surface-cool);
  color: var(--cyan-dark);
}

.action-stack {
  gap: 10px;
}

.primary-button {
  flex: 1;
  padding: 0 18px;
  background: var(--coral);
  color: #fff;
}

.primary-button:hover {
  background: var(--coral-dark);
}

.secondary-button {
  flex: 0 0 auto;
}

.review-note {
  margin: 18px 0 0;
  padding: 14px;
  border-left: 4px solid var(--gold);
  border-radius: 7px;
  background: #fff8e8;
  color: #5a4a2c;
}

.board-panel {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.board-heading {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.board-heading h2,
.saved-heading h2,
.content-block h2,
.examples-section h2,
.faq-section h2 {
  margin: 0;
  color: #111827;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: 0;
}

.board-meta {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.board-meta span,
.card-topline span {
  border-radius: 999px;
  background: var(--surface-cool);
  color: var(--cyan-dark);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 800;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: minmax(300px, auto);
  gap: 14px;
  align-content: start;
}

.card-grid[data-count="4"],
.card-grid[data-count="5"],
.card-grid[data-count="6"] {
  align-content: stretch;
  grid-auto-rows: minmax(320px, 1fr);
}

.idea-card {
  display: grid;
  min-height: 300px;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition:
    border-color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.idea-card:hover,
.idea-card.is-selected {
  border-color: rgba(233, 95, 79, 0.54);
  box-shadow: 0 16px 30px rgba(233, 95, 79, 0.12);
  transform: translateY(-2px);
}

.card-topline {
  justify-content: space-between;
  gap: 10px;
}

.card-topline button {
  padding: 0 12px;
  background: var(--surface-warm);
  color: var(--coral-dark);
}

.idea-card h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.2;
  letter-spacing: 0;
}

.idea-card p {
  margin: 0;
  color: #4b5563;
  font-size: 15px;
  line-height: 1.65;
}

.board-actions {
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 2px;
}

.saved-panel {
  display: grid;
  align-content: start;
  gap: 18px;
}

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

.saved-list li {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: #475467;
  font-size: 14px;
  line-height: 1.45;
}

.saved-list .empty-state {
  background: var(--surface-cool);
  color: var(--cyan-dark);
}

.mini-checklist {
  padding: 16px;
  border-radius: var(--radius);
  background: #f7f8fa;
}

.mini-checklist h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.mini-checklist ul,
.content-block ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 28px auto 0;
}

.content-block,
.examples-section,
.faq-section {
  padding: 26px;
}

.content-block p:last-child,
.section-heading p {
  margin-bottom: 0;
}

.examples-section,
.faq-section {
  max-width: 1180px;
  margin: 18px auto 0;
}

.section-heading {
  max-width: 760px;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.examples-grid article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.examples-grid h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.examples-grid p {
  margin: 0;
  font-size: 14px;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.faq-item button {
  display: flex;
  inline-size: stretch;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 0 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
  text-align: left;
}

.faq-item p {
  display: none;
  margin: 0;
  padding: 0 18px 18px;
}

.faq-item.is-open p {
  display: block;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  max-width: min(360px, calc(100vw - 48px));
  padding: 12px 16px;
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .tool-shell {
    grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
  }

  .saved-panel {
    grid-column: 1 / -1;
  }

  .examples-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    position: static;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .main-nav {
    justify-content: space-between;
    gap: 14px;
  }

  .header-button {
    inline-size: stretch;
  }

  main {
    padding: 16px;
  }

  .tool-shell,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .board-panel {
    order: 2;
  }

  .saved-panel {
    order: 3;
  }

  .board-heading {
    display: grid;
  }

  .board-meta {
    justify-content: flex-start;
  }

  .card-grid,
  .examples-grid {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .card-grid[data-count="4"],
  .card-grid[data-count="5"],
  .card-grid[data-count="6"] {
    grid-auto-rows: auto;
    align-content: start;
  }

  .idea-card {
    min-height: auto;
  }

  .action-stack,
  .board-actions {
    display: grid;
  }

  .primary-button,
  .secondary-button,
  .board-actions button {
    inline-size: stretch;
  }
}

@media (max-width: 430px) {
  .setup-panel,
  .board-panel,
  .saved-panel,
  .content-block,
  .examples-section,
  .faq-section {
    padding: 18px;
  }

  .brand-text {
    font-size: 16px;
  }

  .setup-panel h1 {
    font-size: 38px;
  }

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