/* components.css: Badges, modals, misc shared components */

/* -------------------------------------------------------------------------
   Keyboard shortcut hints (tooltip-style inline labels)
------------------------------------------------------------------------- */
.shortcut-hint {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-faint);
}

/* -------------------------------------------------------------------------
   Empty state
------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-faint);
  text-align: center;
  gap: 8px;
}

.empty-state .empty-icon { font-size: 48px; }
.empty-state h3 { font-size: 16px; color: var(--text-muted); }
.empty-state p  { font-size: 13px; max-width: 300px; line-height: 1.5; }

/* -------------------------------------------------------------------------
   Difficulty color utilities (reusable)
------------------------------------------------------------------------- */
.text-easy   { color: var(--accent-green); }
.text-medium { color: var(--accent-yellow); }
.text-hard   { color: var(--accent-red); }

/* -------------------------------------------------------------------------
   Spinner (for loading states)
------------------------------------------------------------------------- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--bg-surface1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* -------------------------------------------------------------------------
   Scrollable code block (for solution display)
------------------------------------------------------------------------- */
.code-block {
  background: var(--bg-mantle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre;
}

/* -------------------------------------------------------------------------
   Level locked overlay
------------------------------------------------------------------------- */
.lock-banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  color: var(--text-faint);
  text-align: center;
}

.lock-banner .lock-icon { font-size: 52px; }
.lock-banner h2 { font-size: 18px; color: var(--text-muted); }
.lock-banner p  { font-size: 13px; max-width: 320px; line-height: 1.5; }

/* -------------------------------------------------------------------------
   Keyboard shortcut reference (shown in topbar tooltip or help modal)
------------------------------------------------------------------------- */
.shortcut-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  font-size: 13px;
}

.shortcut-list .key {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-surface0);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}

.shortcut-list .desc { color: var(--text-primary); }

/* -------------------------------------------------------------------------
   Progress bar (generic reusable)
------------------------------------------------------------------------- */
.progress-bar {
  height: 6px;
  background: var(--bg-surface0);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-teal) 100%);
  border-radius: 3px;
  transition: width .3s;
}

/* -------------------------------------------------------------------------
   Tooltip
------------------------------------------------------------------------- */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface0);
  color: var(--text-primary);
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 5px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
  border: 1px solid var(--border);
  z-index: 100;
}

[data-tooltip]:hover::after { opacity: 1; }

/* -------------------------------------------------------------------------
   Divider
------------------------------------------------------------------------- */
.divider {
  height: 1px;
  background: var(--border);
  margin: 12px 0;
}