/**
 * Keyboard Navigation — Ribbon + Bottom Bar + Command Palette
 */

/* ═══ Persistent Shortcut Ribbon (below nav) ══════════════ */

.kb-ribbon {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 64px; /* sits right below the 64px nav */
  z-index: 999;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.kb-ribbon-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 4px 12px;
  max-width: 1100px;
  margin: 0 auto;
  white-space: nowrap;
}
.kb-ribbon-label {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  margin-right: 4px;
  flex-shrink: 0;
}
.kb-ribbon-label .material-icons {
  font-size: 16px;
}
.kb-ribbon-key {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--radius-md, 8px);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: none;
  transition: color 0.12s, background 0.12s;
  white-space: nowrap;
  line-height: 1;
}
.kb-ribbon-key:hover,
.kb-ribbon-key:focus-visible {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
}
.kb-ribbon-active {
  color: var(--color-primary);
  font-weight: 700;
  background: rgba(var(--color-primary-rgb), 0.06);
}
.kb-ribbon-key kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  font-size: 0.65rem;
  font-family: inherit;
  font-weight: 700;
  background: var(--bg-section);
  border: 1px solid var(--border-medium);
  border-bottom-width: 2px;
  border-radius: 4px;
  color: var(--color-primary);
  flex-shrink: 0;
  padding: 0 3px;
}
.kb-ribbon-key span {
  pointer-events: none;
}
.kb-ribbon-divider {
  width: 1px;
  height: 16px;
  background: var(--border-light);
  margin: 0 4px;
  flex-shrink: 0;
}

/* Hide ribbon on mobile (bottom bar is the mobile nav) */
@media (max-width: 992px) {
  .kb-ribbon { display: none; }
}

/* ═══ Bottom Navigation Bar ═══════════════════════════════ */

.kb-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, opacity 0.3s;
}
.kb-bar-hidden {
  transform: translateY(100%);
  opacity: 0;
}
.kb-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 12px;
  max-width: 800px;
  margin: 0 auto;
}
.kb-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  border-radius: var(--radius-md, 8px);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.7rem;
  cursor: pointer;
  border: none;
  background: none;
  transition: color 0.15s, background 0.15s;
  position: relative;
  min-width: 56px;
}
.kb-bar-item:hover,
.kb-bar-item:focus-visible {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
}
.kb-bar-active {
  color: var(--color-primary);
}
.kb-bar-active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 0 0 3px 3px;
}
.kb-bar-item .material-icons {
  font-size: 20px;
}
.kb-bar-label {
  font-weight: 500;
  line-height: 1;
}
.kb-bar-item kbd {
  position: absolute;
  top: 2px;
  right: 2px;
  font-size: 0.55rem;
  font-family: inherit;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-section);
  border: 1px solid var(--border-light);
  border-radius: 3px;
  padding: 0 3px;
  line-height: 1.4;
  opacity: 0.6;
}
.kb-bar-item:hover kbd {
  opacity: 1;
  color: var(--color-primary);
}
.kb-bar-more {
  color: var(--text-muted);
  border-left: 1px solid var(--border-light);
  margin-left: 4px;
  padding-left: 14px;
}

/* Add bottom padding to body so bar doesn't cover content */
body {
  padding-bottom: 64px;
}

/* Mobile: smaller bar */
@media (max-width: 480px) {
  .kb-bar-inner { gap: 0; padding: 4px 4px; }
  .kb-bar-item { padding: 4px 6px; min-width: 44px; font-size: 0.6rem; }
  .kb-bar-item kbd { display: none; }
  .kb-bar-label { display: none; }
  .kb-bar-item .material-icons { font-size: 22px; }
  body { padding-bottom: 52px; }
}
@media (max-width: 768px) {
  .kb-bar-item kbd { display: none; }
}

/* ═══ Command Palette Overlay ═════════════════════════════ */

.kb-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 9990;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s, visibility 0.15s;
}
.kb-overlay.kb-open {
  opacity: 1;
  visibility: visible;
}

.kb-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
  max-width: 520px;
  width: 92%;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  transform: translateY(-10px) scale(0.98);
  transition: transform 0.15s;
  overflow: hidden;
}
.kb-open .kb-panel {
  transform: none;
}

/* Header */
.kb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px 10px;
  border-bottom: 1px solid var(--border-light);
}
.kb-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.kb-header-left .material-icons {
  font-size: 20px;
  color: var(--color-primary);
}
.kb-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.kb-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.kb-esc {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.kb-close {
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}
.kb-close:hover {
  background: var(--bg-section);
  color: var(--text-primary);
}

/* Search */
.kb-search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border-light);
}
.kb-search-wrap .material-icons {
  font-size: 20px;
  color: var(--text-muted);
}
.kb-search {
  flex: 1;
  border: none !important;
  outline: none;
  background: transparent;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin: 0 !important;
  padding: 0 !important;
  height: auto !important;
  box-shadow: none !important;
}
.kb-search::placeholder {
  color: var(--text-muted);
}

/* Body */
.kb-body {
  padding: 8px;
  overflow-y: auto;
  flex: 1;
}
.kb-section {
  margin-bottom: 8px;
}
.kb-section:last-child {
  margin-bottom: 0;
}
.kb-section h4 {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  margin: 4px 10px 4px;
  font-weight: 600;
}

/* List items */
.kb-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.kb-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-md, 8px);
  cursor: pointer;
  transition: background 0.1s;
  color: var(--text-primary);
  font-size: 0.9rem;
}
.kb-list-item:hover,
.kb-list-item.kb-focused {
  background: rgba(var(--color-primary-rgb), 0.08);
}
.kb-list-item.kb-focused {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}
.kb-list-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.kb-list-item .material-icons {
  font-size: 18px;
  color: var(--color-primary);
  width: 24px;
  text-align: center;
}
.kb-list-item kbd {
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 700;
  background: var(--bg-section);
  border: 1px solid var(--border-medium);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 2px 8px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.kb-current {
  background: rgba(var(--color-primary-rgb), 0.06);
}
.kb-badge {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: 1px 6px;
  border-radius: 4px;
}

/* Footer */
.kb-footer {
  padding: 10px 18px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.kb-footer kbd {
  font-size: 0.7rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--bg-section);
  border: 1px solid var(--border-light);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--text-secondary);
}

/* Mobile overlay */
@media (max-width: 480px) {
  .kb-overlay { padding-top: 5vh; }
  .kb-panel { width: 96%; max-height: 80vh; }
  .kb-list-item { padding: 10px 10px; }
  .kb-footer { gap: 10px; }
}