:root {
  --kb-ink: #1f2430;
  --kb-muted: #5c6573;
  --kb-surface: rgba(255, 251, 244, 0.8);
  --kb-surface-strong: #fffaf1;
  --kb-line: rgba(31, 36, 48, 0.12);
  --kb-accent: #0d6d63;
  --kb-accent-soft: #d9efe8;
  --kb-highlight: #d66a3d;
  --kb-highlight-soft: #f7e3d9;
  --kb-danger: #9f3f2f;
  --kb-danger-soft: #f8dfd8;
  --kb-shadow: 0 24px 60px rgba(31, 36, 48, 0.12);
  --kb-radius: 1.2rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--kb-ink);
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(214, 106, 61, 0.16), transparent 32%),
    radial-gradient(circle at top right, rgba(13, 109, 99, 0.14), transparent 28%),
    linear-gradient(180deg, #f7f1e7 0%, #f2ecdf 48%, #eee7da 100%);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;
  line-height: 1.1;
}

p {
  margin: 0;
  line-height: 1.6;
}

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

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

button {
  cursor: pointer;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  color: var(--kb-ink);
  border: 1px solid var(--kb-line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.88);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(13, 109, 99, 0.16);
  border-color: rgba(13, 109, 99, 0.42);
}

.kb-page {
  padding: 1.5rem;
}

.kb-stack {
  display: grid;
  gap: 1.25rem;
}

.kb-navbar {
  background: linear-gradient(120deg, #173a44, #244e58, #345766);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.kb-navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1600px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.kb-navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.kb-navbar__actions form {
  margin: 0;
}

.kb-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.kb-navbar__actions a {
  color: rgba(255, 255, 255, 0.92);
}

.kb-brand-mark,
.kb-panel,
.kb-sidebar,
.kb-stat-card,
.kb-message,
.kb-subscription-card {
  border-radius: var(--kb-radius);
  box-shadow: var(--kb-shadow);
}

.kb-brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  color: var(--kb-ink);
  background: linear-gradient(135deg, #f6dfc2, #f0bb96);
}

.kb-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.32rem 0.68rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 0.8rem;
  font-weight: 700;
}

.kb-badge-accent {
  color: var(--kb-accent);
  background: var(--kb-accent-soft);
}

.kb-badge-highlight {
  color: #8c4020;
  background: var(--kb-highlight-soft);
}

.kb-shell {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(220px, 280px) 1fr;
  align-items: start;
}

.kb-sidebar,
.kb-panel,
.kb-stat-card {
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: var(--kb-surface);
}

.kb-sidebar {
  position: sticky;
  top: 6rem;
  padding: 1rem;
}

.kb-sidebar-section + .kb-sidebar-section {
  margin-top: 1.25rem;
}

.kb-sidebar-note {
  color: var(--kb-muted);
  font-size: 0.92rem;
}

.kb-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  margin-bottom: 0.45rem;
  color: var(--kb-ink);
  border-radius: 999px;
  transition: transform 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
  border: 1px solid transparent;
}

.kb-nav-link:hover,
.kb-subnav-link:hover,
.kb-nav-link.is-active {
  transform: translateX(3px);
  background: var(--kb-accent-soft);
  border-color: rgba(13, 109, 99, 0.2);
}

.kb-subnav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.25rem 0 0.25rem 1rem;
  padding: 0.55rem 0.8rem;
  border-radius: 0.95rem;
  color: var(--kb-muted);
  border: 1px solid transparent;
}

.kb-subnav-link.is-active {
  background: rgba(13, 109, 99, 0.12);
  border-color: rgba(13, 109, 99, 0.18);
  color: var(--kb-ink);
}

.kb-nav-count {
  min-width: 2rem;
  padding-left: 0.75rem;
  text-align: right;
  font-size: 0.84rem;
  color: var(--kb-muted);
}

.kb-panel {
  padding: 1.5rem;
}

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

.kb-lead,
.kb-muted,
.kb-entry-meta,
.kb-entry-summary,
.kb-stat-copy,
.kb-form-help {
  color: var(--kb-muted);
}

.kb-actions,
.kb-form-actions,
.kb-entry-actions,
.kb-toolbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.kb-search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.kb-search-form input[type="text"] {
  width: min(20rem, 100%);
}

.kb-stat-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.kb-stat-card {
  padding: 1rem 1.2rem;
}

.kb-stat-value {
  margin-top: 0.5rem;
  font-size: 2rem;
  font-weight: 700;
}

.kb-label {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--kb-muted);
}

.kb-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.kb-tab {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--kb-line);
  background: rgba(255, 255, 255, 0.65);
}

.kb-tab.is-active {
  background: var(--kb-accent-soft);
  border-color: rgba(13, 109, 99, 0.2);
}

.kb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #fff;
  background: var(--kb-accent);
  font-weight: 700;
}

.kb-button-secondary {
  color: var(--kb-ink);
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--kb-line);
}

.kb-button-danger {
  color: #fff;
  background: var(--kb-danger);
}

.kb-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.kb-chip-accent {
  color: var(--kb-accent);
  background: var(--kb-accent-soft);
}

.kb-chip-highlight {
  color: #8c4020;
  background: var(--kb-highlight-soft);
}

.kb-message-stack {
  display: grid;
  gap: 0.75rem;
}

.kb-message {
  padding: 0.95rem 1rem;
  border: 1px solid var(--kb-line);
  background: rgba(255, 255, 255, 0.86);
}

.kb-message.is-success {
  border-color: rgba(13, 109, 99, 0.2);
  background: var(--kb-accent-soft);
}

.kb-message.is-error,
.kb-message.is-danger {
  border-color: rgba(159, 63, 47, 0.2);
  background: var(--kb-danger-soft);
}

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

.kb-inline-form {
  margin: 0;
}

.kb-field {
  display: grid;
  gap: 0.45rem;
}

.kb-field label {
  font-weight: 700;
}

.kb-field.has-error input,
.kb-field.has-error select,
.kb-field.has-error textarea {
  border-color: rgba(159, 63, 47, 0.35);
}

.kb-form-errors {
  display: grid;
  gap: 0.4rem;
  padding: 0.9rem 1rem;
  border-radius: 0.95rem;
  background: var(--kb-danger-soft);
}

.kb-form-error {
  color: var(--kb-danger);
  font-size: 0.92rem;
}

.kb-reader-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: start;
}

.kb-reader-grid-reader {
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
}

.kb-reader-grid-global {
  grid-template-columns: 1fr;
}

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

.kb-entry-stack,
.kb-subscription-stack {
  display: grid;
  gap: 1rem;
}

.kb-entry-card {
  padding: 1rem;
  border: 1px solid var(--kb-line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.76);
}

.kb-entry-card.is-selected {
  border-color: rgba(13, 109, 99, 0.24);
  background: rgba(217, 239, 232, 0.4);
}

.kb-entry-card__header,
.kb-section-header,
.kb-subscription-card {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
}

.kb-entry-title {
  font-size: 1.08rem;
  font-weight: 700;
}

.kb-entry-badges {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.kb-entry-summary {
  margin-top: 0.65rem;
}

.kb-entry-preview,
.kb-entry-media {
  margin-top: 0.85rem;
}

.kb-entry-preview img,
.kb-entry-media img,
.kb-entry-media video {
  width: 100%;
  max-height: 18rem;
  object-fit: cover;
  border-radius: 0.95rem;
  border: 1px solid var(--kb-line);
  background: rgba(255, 255, 255, 0.72);
}

.kb-entry-media audio {
  width: 100%;
}

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

.kb-entry-body {
  padding-top: 1rem;
  border-top: 1px solid var(--kb-line);
}

.kb-empty-state {
  display: grid;
  gap: 0.6rem;
  padding: 1rem 0;
}

.kb-subscription-card {
  padding: 1rem;
  border: 1px solid var(--kb-line);
  background: rgba(255, 255, 255, 0.76);
  flex-direction: column;
}

.kb-subscription-card.is-hanging {
  border-color: rgba(214, 106, 61, 0.35);
  background: rgba(247, 227, 217, 0.55);
}

.kb-subscription-meta {
  display: grid;
  gap: 0.3rem;
}

.kb-subscription-meta span {
  color: var(--kb-muted);
  font-size: 0.92rem;
}

.kb-subscription-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
}

.kb-job-details {
  display: grid;
  gap: 0.75rem;
}

.kb-job-details summary {
  cursor: pointer;
  font-weight: 700;
}

.kb-job-pre {
  margin: 0;
  padding: 0.85rem;
  overflow-x: auto;
  border-radius: 0.95rem;
  background: rgba(31, 36, 48, 0.06);
  white-space: pre-wrap;
  word-break: break-word;
}

.kb-pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
  align-items: center;
}

.kb-pagination-gap {
  padding: 0.4rem 0.2rem;
  color: var(--kb-muted);
}

@media (max-width: 991px) {
  .kb-page {
    padding: 1rem;
  }

  .kb-navbar__inner,
  .kb-toolbar,
  .kb-entry-card__header,
  .kb-section-header {
    flex-direction: column;
    align-items: start;
  }

  .kb-shell {
    grid-template-columns: 1fr;
  }

  .kb-sidebar {
    position: static;
  }

  .kb-reader-grid,
  .kb-subscription-form {
    grid-template-columns: 1fr;
  }
}