.kb-app { --kb-radius: 22px; }
.kb-heading, .kb-toolbar, .kb-dialog-heading, .kb-dialog-actions, .kb-column-header, .kb-card-footer { display: flex; align-items: center; gap: 10px; }
.kb-heading { justify-content: space-between; flex-wrap: wrap; margin-bottom: 28px; }
.kb-heading h1 {
  margin: 10px 0 6px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.03em;
  font-weight: 750;
  color: var(--ink);
}
.kb-heading p, .kb-footnote p { margin: 4px 0; color: var(--muted); font-size: 13.5px; }
.kb-heading .text-link { font-size: 13px; font-weight: 600; }
.kb-lifetime { display: grid; grid-template-columns: 8px auto; column-gap: 8px; font-size: 12px; color: var(--muted); }
.kb-lifetime strong { grid-column: 2; margin-top: 5px; color: var(--accent-dark); font-weight: 600; }
.kb-local-dot { width: 8px; height: 8px; margin-top: 6px; border-radius: 50%; background: #34c759; box-shadow: 0 0 8px rgba(52, 199, 89, 0.6); }

/* iOS 18 Workspace Container */
.kb-workspace {
  border: 1px solid var(--glass-edge);
  border-radius: var(--kb-radius);
  background: var(--raised-bg);
  backdrop-filter: var(--glass);
  -webkit-backdrop-filter: var(--glass);
  box-shadow: var(--panel-bevel), var(--shadow);
  overflow: hidden;
}
.kb-toolbar { flex-wrap: wrap; padding: 16px 20px; }
.kb-filters { border-top: 1px solid var(--line); }
.kb-spacer { flex: 1; }

/* iOS 18 Inputs */
.kb-app input, .kb-app select, .kb-app textarea {
  font: inherit;
  min-width: 0;
  max-width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  min-height: 40px;
  transition: all 0.18s ease;
}
.kb-app input:focus, .kb-app select:focus, .kb-app textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.22);
}
.kb-app textarea { resize: vertical; }
.kb-app input::placeholder, .kb-app textarea::placeholder { color: var(--muted); }
.kb-board-picker { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 12px; }
.kb-board-picker select { max-width: 240px; font-size: 14.5px; font-weight: 650; }

/* iOS 18 Pill Buttons */
.kb-btn {
  min-height: 38px;
  padding: 6px 16px;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--panel-bevel), 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: all 0.18s var(--ease-spring);
}
.kb-btn:hover {
  border-color: var(--accent);
  background: var(--soft);
  color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--panel-bevel), 0 2px 6px rgba(0, 0, 0, 0.08);
}
.kb-btn:active {
  transform: scale(0.96) translateY(1px);
}
.kb-btn:disabled { opacity: .45; cursor: default; transform: none; }
.kb-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.28);
}
.kb-primary:hover {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.35);
}
.kb-danger { color: var(--note); }
.kb-search { flex: 1; min-width: 170px; }
.kb-search input { width: 100%; }
.kb-summary { color: var(--muted); font-size: 12px; margin-right: auto; }
.kb-status { min-height: 20px; margin: 10px 0; font-size: 12px; color: var(--accent-dark); font-weight: 600; }
.kb-warning { padding: 12px 16px; color: var(--note); border: 1px solid var(--note); border-radius: 12px; }

/* iOS 18 Kanban Columns */
.kb-columns {
  display: flex;
  align-items: stretch;
  gap: 16px;
  overflow-x: auto;
  padding: 16px 20px 24px;
  min-height: 360px;
  scroll-snap-type: x proximity;
}
.kb-column {
  flex: 0 0 310px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--alt-bg);
  scroll-snap-align: start;
}
.kb-column-header { margin-bottom: 14px; }
.kb-column-header h2 {
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
}
.kb-count {
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;
  margin-right: auto;
  background: var(--panel);
  padding: 2px 8px;
  border-radius: 9999px;
}
.kb-icon-btn { padding: 4px 10px; min-height: 32px; border-radius: 9999px; }
.kb-task-list { display: flex; flex-direction: column; gap: 10px; min-height: 110px; padding-bottom: 10px; }

/* iOS 18 Notes/Reminders Item Card */
.kb-card {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  overflow-wrap: anywhere;
  box-shadow: var(--panel-bevel), var(--shadow-small);
  transition: transform 0.2s var(--ease-spring), border-color 0.2s ease, box-shadow 0.2s ease;
}
.kb-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--panel-bevel), var(--shadow);
}
.kb-card h3 {
  margin: 6px 0 8px;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.45;
  white-space: pre-wrap;
  color: var(--ink);
}
.kb-card-notes { white-space: pre-wrap; font-size: 12.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin: 0 0 12px; line-height: 1.6; }
.kb-card-top { display: flex; gap: 8px; justify-content: space-between; align-items: center; }
.kb-priority-label, .kb-tag {
  font-size: 11px;
  font-weight: 600;
  border-radius: 9999px;
  padding: 3px 9px;
  background: var(--soft);
  color: var(--accent-dark);
}
.kb-priority-high { color: var(--note); background: rgba(188, 88, 39, 0.12); }
.kb-priority-low { color: var(--muted); background: var(--subtle-bg); }
.kb-drag-handle { cursor: grab; color: var(--muted); letter-spacing: 1px; }
.kb-dragging { opacity: .4; }
.kb-drop-target { outline: 2px dashed var(--accent); outline-offset: -3px; }
.kb-card-meta, .kb-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; font-size: 11px; color: var(--muted); }
.kb-overdue { color: var(--note); font-weight: 600; }
.kb-card-footer { justify-content: flex-end; }
.kb-card-footer .kb-btn { font-size: 12px; min-height: 32px; padding: 4px 12px; }
.kb-quick-form { display: flex; gap: 6px; }
.kb-quick-form input { width: 100%; font-size: 13px; }
.kb-empty { margin: 18px 0; text-align: center; color: var(--muted); font-size: 12px; }
.kb-footnote { margin-top: 8px; line-height: 1.8; }

/* iOS 18 Sheet / Modal Dialog */
.kb-dialog {
  width: min(580px, calc(100% - 32px));
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  padding: 28px 32px;
  border: 1px solid var(--glass-edge);
  border-radius: 26px;
  background: var(--raised-bg);
  backdrop-filter: var(--glass);
  -webkit-backdrop-filter: var(--glass);
  box-shadow: var(--panel-bevel), var(--shadow-heavy);
  color: var(--ink);
}
.kb-dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.kb-dialog-heading { justify-content: space-between; margin-bottom: 20px; }
.kb-dialog h2 { margin: 0; font-size: 22px; font-weight: 750; letter-spacing: -0.02em; }
.kb-dialog label { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; font-size: 13px; font-weight: 600; }
.kb-dialog-actions { margin-top: 24px; flex-wrap: wrap; }
.kb-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.kb-form-help { font-size: 12px; color: var(--muted); line-height: 1.7; }
.kb-app [hidden] { display: none !important; }
.kb-app :is(button, input, select, textarea, [tabindex]):focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
@media (max-width: 620px) {
  .kb-column { flex-basis: min(300px, calc(100vw - 48px)); }
  .kb-toolbar { gap: 8px; padding: 12px; }
  .kb-board-picker { width: 100%; }
  .kb-board-picker select { flex: 1; max-width: none; font-size: 16px; }
  .kb-search { flex-basis: 100%; }
  .kb-search input { font-size: 16px; }
  .kb-summary { flex-basis: 100%; }
  .kb-btn { min-height: 42px; }
  .kb-dialog { padding: 20px 16px; border-radius: 20px; }
  .kb-form-grid { grid-template-columns: 1fr; }
}
.kb-btn,
.kb-card {
  transition: transform 0.34s var(--ease-spring-bounce), box-shadow 0.24s var(--ease-spring), border-color 0.2s ease, background-color 0.2s ease;
}
.kb-btn:active,
.kb-btn.is-pressing {
  transform: scale(0.93) !important;
  transition-duration: 80ms !important;
}
.kb-card:active,
.kb-card.is-pressing {
  transform: scale(0.98) !important;
  transition-duration: 85ms !important;
}
@media (prefers-reduced-motion: reduce) { .kb-app *, .kb-app *::before { scroll-behavior: auto; transition: none; } }
.kb-workspace,
.kb-column,
.kb-card,
.kb-dialog {
  background: var(--raised-bg);
  border-color: var(--glass-edge);
  -webkit-backdrop-filter: var(--glass);
  backdrop-filter: var(--glass);
}