:root {
  --bg: #f5f6f8;
  --panel: rgba(255, 255, 255, 0.9);
  --ink: #1f2937;
  --muted: #667085;
  --line: rgba(216, 221, 231, 0.9);
  --brand: #00c4cc;
  --brand-2: #7d2ae8;
  --soft-blue: #eef5ff;
  --soft-mint: #eefbfd;
  --shadow: 0 10px 24px rgba(16, 24, 40, 0.08);
}

body[data-theme="ocean"] {
  --bg: #f4fbff;
  --muted: #567187;
  --line: rgba(191, 214, 228, 0.72);
  --brand: #1399ff;
  --brand-2: #00c2d6;
  --soft-blue: #eef7ff;
  --soft-mint: #edfdfd;
}

body[data-theme="emerald"] {
  --bg: #f6fbf8;
  --muted: #546e68;
  --line: rgba(199, 220, 209, 0.72);
  --brand: #169970;
  --brand-2: #0f766e;
  --soft-blue: #eef9f4;
  --soft-mint: #effbf4;
}

body[data-theme="sunset"] {
  --bg: #fff8f3;
  --muted: #7a6458;
  --line: rgba(228, 210, 199, 0.72);
  --brand: #ef8a27;
  --brand-2: #de5c3f;
  --soft-blue: #fff4ea;
  --soft-mint: #fff7ef;
}

body[data-theme="ruby"] {
  --bg: #fff7fa;
  --muted: #7a5c69;
  --line: rgba(228, 205, 216, 0.72);
  --brand: #d54270;
  --brand-2: #8d2ed1;
  --soft-blue: #fff0f5;
  --soft-mint: #f8efff;
}

body[data-theme="navy"] {
  --bg: #f5f8ff;
  --muted: #596685;
  --line: rgba(207, 214, 230, 0.72);
  --brand: #496fff;
  --brand-2: #26387f;
  --soft-blue: #eef2ff;
  --soft-mint: #f1f4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(rgba(71, 84, 103, 0.12) 0.8px, transparent 0.8px),
    linear-gradient(180deg, #f9fafb 0%, var(--bg) 100%);
  background-size: 16px 16px, 100% 100%;
}

/* Keep Knowledge Base rail clean: icon-only buttons + hover tooltip.
   Prevent stacked tiny labels from compressing the rail items. */
body.module-builder-page[data-page="knowledge-base"] .builder-rail-nav .builder-rail-link {
  min-height: 40px;
  display: grid;
  place-items: center;
  gap: 0;
}

body.module-builder-page[data-page="knowledge-base"] .builder-rail-nav .builder-rail-link svg {
  color: #ffffff;
}

body.module-builder-page[data-page="knowledge-base"] .builder-rail-nav .builder-rail-link::after {
  content: attr(aria-label);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  font-size: 0.76rem;
  font-weight: 700;
  color: #e8f0ff;
  background: rgba(18, 28, 48, 0.94);
  border: 1px solid rgba(171, 188, 226, 0.24);
  border-radius: 8px;
  padding: 0.26rem 0.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

body.module-builder-page[data-page="knowledge-base"] .builder-rail-nav .builder-rail-link:hover::after,
body.module-builder-page[data-page="knowledge-base"] .builder-rail-nav .builder-rail-link:focus-visible::after {
  opacity: 1;
}

.kb-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(12px);
}

.kb-topbar-inner {
  max-width: 1660px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.kb-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--brand-2);
}

.kb-brand h1 {
  margin: 0.34rem 0 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.35rem, 2.8vw, 2rem);
}

.kb-brand p:last-child {
  margin: 0.45rem 0 0;
  color: var(--muted);
  max-width: 720px;
}

.kb-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.kb-btn {
  text-decoration: none;
  border: 1px solid #e5e8ee;
  color: #263653;
  background: linear-gradient(180deg, #ffffff, #fafbfc);
  border-radius: 12px;
  padding: 0.62rem 0.88rem;
  font-weight: 700;
  box-shadow: 0 8px 16px rgba(35, 48, 78, 0.08);
}

.kb-layout {
  max-width: 1660px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.kb-sidebar {
  position: sticky;
  top: 96px;
  border-radius: 18px;
  border: 1px solid #e5e8ee;
  padding: 1rem;
  background: #ffffff;
  color: #334155;
  box-shadow: 0 6px 16px rgba(16, 24, 40, 0.06);
}

.kb-sidebar h2,
.kb-support-card h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 0.98rem;
}

.kb-side-links {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.45rem;
}

.kb-side-links a {
  text-decoration: none;
  color: #334155;
  border: 1px solid #e5e8ee;
  border-radius: 10px;
  padding: 0.56rem 0.62rem;
  font-weight: 700;
  background: #fafbfc;
}

.kb-side-links a:hover {
  background: rgba(214, 230, 255, 0.14);
  border-color: rgba(193, 215, 247, 0.26);
}

.kb-support-card {
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid rgba(184, 204, 233, 0.22);
}

.kb-support-card p {
  margin: 0.45rem 0 0;
  color: #bed2ef;
  line-height: 1.5;
}

.kb-support-card a {
  display: inline-block;
  margin-top: 0.65rem;
  color: #fff4c9;
  font-weight: 700;
  text-decoration: none;
}

.kb-support-links {
  display: grid;
  gap: 0.18rem;
}

.kb-support-note {
  margin: 0.55rem 0 0;
  line-height: 1.55;
}

.kb-main {
  display: grid;
  gap: 1rem;
}

.kb-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--panel);
  box-shadow: var(--shadow);
  scroll-margin-top: 104px;
}

.kb-panel-head {
  margin-bottom: 0.9rem;
}

.kb-panel-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--brand-2);
}

.kb-panel-head h2 {
  margin: 0.32rem 0 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.08rem, 2vw, 1.4rem);
}

.kb-panel-head p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  max-width: 760px;
}

.kb-guide-grid,
.kb-tip-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.kb-guide-card,
.kb-tip-card {
  border: 1px solid #e0e5f0;
  border-radius: 16px;
  padding: 0.95rem 1rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(247,249,252,0.92));
}

.kb-guide-card:nth-child(2),
.kb-tip-card:nth-child(2) {
  background: linear-gradient(180deg, rgba(250,255,255,0.96), rgba(246,241,255,0.92));
}

.kb-guide-card h3,
.kb-tip-card h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 0.96rem;
  color: var(--brand-2);
}

.kb-guide-card ol,
.kb-tip-card ul {
  margin: 0.65rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.68;
}

@media (max-width: 1180px) {
  .kb-layout {
    grid-template-columns: 1fr;
  }

  .kb-sidebar {
    position: static;
  }
}

@media (max-width: 860px) {
  .kb-topbar-inner {
    flex-direction: column;
  }

  .kb-actions {
    justify-content: flex-start;
  }

  .kb-guide-grid,
  .kb-tip-grid {
    grid-template-columns: 1fr;
  }
}

body {
  background:
    radial-gradient(circle at 0% 0%, rgba(0, 196, 204, 0.08) 0, transparent 28%),
    radial-gradient(circle at 100% 100%, rgba(125, 42, 232, 0.08) 0, transparent 32%),
    linear-gradient(180deg, #f6f9fd 0%, #f2f5fb 100%);
}

.kb-topbar {
  border-bottom-color: rgba(205, 214, 229, 0.78);
  background: rgba(249, 251, 255, 0.9);
}

.kb-topbar-inner,
.kb-layout {
  max-width: 1380px;
}

.kb-brand p:last-child {
  max-width: 680px;
}

.kb-btn {
  min-height: 44px;
  border-radius: 14px;
  padding: 0.68rem 0.95rem;
  box-shadow: none;
}

.kb-layout {
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1.15rem 1rem 1.4rem;
}

.kb-sidebar {
  border-color: rgba(203, 214, 229, 0.94);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(0, 196, 204, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 255, 0.96));
  color: #20314f;
  box-shadow: 0 18px 36px rgba(24, 44, 77, 0.08);
}

.kb-sidebar h2,
.kb-support-card h3 {
  color: #20314f;
}

.kb-side-links {
  gap: 0.52rem;
}

.kb-side-links a {
  color: #324b73;
  border-color: rgba(207, 218, 234, 0.9);
  background: rgba(255, 255, 255, 0.92);
}

.kb-side-links a:hover {
  background: #eff5ff;
  border-color: rgba(160, 187, 228, 0.72);
}

.kb-support-card {
  border-top-color: rgba(206, 217, 233, 0.88);
}

.kb-support-card p {
  color: var(--muted);
}

.kb-support-card a {
  color: #255d9f;
}

.kb-support-note {
  color: var(--muted);
}

.kb-main {
  gap: 1.05rem;
}

.kb-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.kb-overview-card {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(205, 216, 231, 0.94);
  border-radius: 20px;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(73, 111, 255, 0.08), transparent 62%),
    rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 32px rgba(24, 44, 77, 0.07);
}

.kb-overview-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  font-weight: 800;
  color: #5e71a3;
}

.kb-overview-card strong {
  font-size: 1rem;
  color: #20314f;
}

.kb-overview-card span {
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.9rem;
}

.kb-panel {
  border-radius: 22px;
  padding: 1.2rem 1.15rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 255, 0.96));
  box-shadow: 0 18px 38px rgba(24, 44, 77, 0.08);
}

.kb-panel-head {
  margin-bottom: 1rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px solid rgba(217, 225, 237, 0.88);
}

.kb-panel-head p:last-child {
  max-width: 720px;
}

.kb-process-context {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding: 0.8rem 0.9rem;
  max-width: 760px;
  border: 1px solid rgba(173, 197, 232, 0.62);
  border-left: 4px solid var(--brand);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(240, 247, 255, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.kb-process-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 0.2rem 0.62rem;
  border-radius: 999px;
  background: rgba(73, 111, 255, 0.1);
  color: #2d4f91;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kb-process-context span:last-child {
  color: #435777;
  line-height: 1.62;
  font-weight: 600;
}

.kb-guide-card,
.kb-tip-card {
  border-radius: 18px;
  padding: 1rem 1.05rem;
  background: rgba(255, 255, 255, 0.92);
}

.kb-guide-card h3,
.kb-tip-card h3 {
  font-size: 1rem;
}

.kb-guide-card ol,
.kb-tip-card ul {
  margin-top: 0.72rem;
}

@media (max-width: 1180px) {
  .kb-overview {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .kb-layout {
    padding-top: 1rem;
  }

  .kb-sidebar,
  .kb-panel {
    border-radius: 20px;
  }

  .kb-process-context {
    padding: 0.78rem 0.82rem;
  }
}

/* Match the new shared left-rail layout used across workspace modules. */
body.kb-shell {
  padding-left: 68px;
}

body.kb-shell .kb-topbar {
  border-bottom: 1px solid #dbe3ef;
  background: rgba(247, 249, 252, 0.88);
  backdrop-filter: blur(18px);
}

body.kb-shell .kb-topbar-inner {
  max-width: 1680px;
  justify-content: flex-start;
  padding: 0 1rem 0 0.6rem;
}

body.kb-shell .kb-layout {
  max-width: 1680px;
}

@media (max-width: 980px) {
  body.kb-shell {
    padding-left: 0;
  }
}