/* Keyboard shortcuts overlay */
#kbd-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: kbd-fade 0.16s ease-out;
}

@keyframes kbd-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

#kbd-overlay .kbd-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
}

#kbd-overlay .kbd-panel {
  position: relative;
  background: var(--bg-surface, #171717);
  border: 1px solid var(--border-default, #2a2a2a);
  border-radius: 18px;
  width: min(720px, 92vw);
  max-height: 84vh;
  overflow: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  animation: kbd-pop 0.18s ease-out;
}

@keyframes kbd-pop {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

#kbd-overlay .kbd-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-default, #2a2a2a);
}

#kbd-overlay .kbd-header h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary, #fff);
}

#kbd-overlay .kbd-close {
  width: 32px;
  height: 32px;
  border: 0;
  background: transparent;
  color: var(--text-secondary, #a3a3a3);
  font-size: 22px;
  cursor: pointer;
  border-radius: 8px;
  line-height: 1;
}

#kbd-overlay .kbd-close:hover {
  background: var(--bg-base, #0a0a0a);
  color: var(--text-primary, #fff);
}

#kbd-overlay .kbd-grid {
  padding: 18px 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

#kbd-overlay .kbd-group h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary, #737373);
  margin: 0 0 10px;
}

#kbd-overlay .kbd-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

#kbd-overlay .kbd-group li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 13px;
}

#kbd-overlay .kbd-label {
  color: var(--text-secondary, #a3a3a3);
  flex: 1;
}

#kbd-overlay .kbd-keys {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#kbd-overlay kbd {
  display: inline-block;
  min-width: 24px;
  padding: 3px 7px;
  background: var(--bg-base, #0a0a0a);
  border: 1px solid var(--border-default, #2a2a2a);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary, #fff);
  text-align: center;
  line-height: 1.2;
}

#kbd-overlay .kbd-sep {
  font-size: 10px;
  color: var(--text-tertiary, #737373);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

#kbd-overlay .kbd-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border-default, #2a2a2a);
  font-size: 12px;
  color: var(--text-tertiary, #737373);
}

body.kbd-open {
  overflow: hidden;
}