/* ===== Shared Help Menu / Panel Styles ===== */
/* Used by: HelpController, SettingsController, and similar overlay panels */

/* ----- Overlay (Backdrop) ----- */
.panel-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: var(--z-panel-overlay);
    padding: 20px;
    box-sizing: border-box;
}

/* Positioning variants */
.panel-overlay--center {
    align-items: center;
    justify-content: center;
}

.panel-overlay--bottom-right {
    align-items: flex-end;
    justify-content: flex-end;
}

/* ----- Window (Modal Container) ----- */
.panel-window {
    background: var(--bg-elevated);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-default);
    border-radius: 10px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 var(--border-subtle);
    max-width: 100%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: sans-serif;
}

/* Width variants */
.panel-window--sm {
    width: 400px;
}

.panel-window--md {
    width: 450px;
}

/* ----- Header ----- */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-muted);
    border-bottom: 1px solid var(--border-subtle);
    border-radius: 10px 10px 0 0;
}

.panel-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--font-size-body-sm);
    font-weight: 500;
}

/* ----- Close Button ----- */
.panel-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: var(--font-size-h3);
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.panel-close-btn:hover {
    background-color: var(--interactive-hover);
    color: var(--text-primary);
}

/* ----- Search Container ----- */
.panel-search-container {
    padding: 12px 16px;
    background: transparent;
    border-bottom: 1px solid var(--border-subtle);
}

/* ----- Search Input ----- */
.panel-search-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: var(--font-size-ui-md);
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.panel-search-input:focus {
    border-color: var(--interactive-focus);
    background: var(--bg-surface);
}

.panel-search-input::placeholder {
    color: var(--text-disabled);
}

/* ----- Content Area ----- */
.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.panel-content::-webkit-scrollbar {
    width: 6px;
}

.panel-content::-webkit-scrollbar-track {
    background: var(--bg-subtle);
    border-radius: 3px;
}

.panel-content::-webkit-scrollbar-thumb {
    background-color: var(--neutral-600);
    border-radius: 3px;
}

.panel-content::-webkit-scrollbar-thumb:hover {
    background-color: var(--neutral-500);
}

/* ----- Content List ----- */
.panel-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

/* ----- Category Header ----- */
.panel-category-header {
    padding: 12px 16px 6px 16px;
    color: var(--text-muted);
    font-size: var(--font-size-ui-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* For list-based panels (like help) */
li.panel-category-header {
    margin-top: 10px;
}

li.panel-category-header:first-child {
    margin-top: 0;
}

/* ----- List Item ----- */
.panel-item {
    display: flex;
    gap: 15px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle);
    transition: background-color 0.15s ease;
}

.panel-item:hover {
    background-color: var(--interactive-hover);
}

.panel-item:last-child {
    border-bottom: none;
}

/* ----- Item Label (left side with title + description) ----- */
.panel-item-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.panel-item-title {
    color: var(--text-primary);
    font-size: var(--font-size-ui-md);
    font-weight: 500;
}

.panel-item-description {
    color: var(--text-muted);
    font-size: var(--font-size-ui-sm);
    line-height: 1.3;
}

.panel-item-description p {
    margin: 2px 0;
}


/* ----- Empty / No Results State ----- */
.panel-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-ui-md);
}

/* ----- Form Controls (shared styling) ----- */
.panel-input {
    padding: 6px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: var(--font-size-body-xs);
    min-width: 120px;
    outline: none;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.panel-input:hover {
    border-color: var(--border-default);
}

.panel-input:focus {
    border-color: var(--interactive-focus);
    background: var(--bg-surface);
}

.panel-select {
    padding: 6px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: var(--font-size-body-xs);
    cursor: pointer;
    outline: none;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.panel-select:hover {
    border-color: var(--border-default);
}

.panel-select:focus {
    border-color: var(--interactive-focus);
    background: var(--bg-surface);
}

/* ----- Toggle Switch ----- */
.panel-toggle {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    flex-shrink: 0;
}

.panel-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.panel-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-subtle);
    transition: background 0.2s ease;
    border-radius: 22px;
    border: 1px solid var(--border-subtle);
}

.panel-toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: var(--text-primary);
    transition: transform 0.2s ease;
    border-radius: 50%;
}

.panel-toggle input:checked + .panel-toggle-slider {
    background: var(--success-500);
    border-color: var(--success-600);
}

.panel-toggle input:checked + .panel-toggle-slider:before {
    transform: translateX(18px);
}

.panel-toggle input:focus + .panel-toggle-slider {
    box-shadow: 0 0 0 2px var(--border-subtle);
}

.panel-btn {
    background-color: var(--accent-main);
    color: var(--shade-white);
    padding: 8px 12px;
    font-size: var(--font-size-body-sm);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    min-width: 120px;
}

.panel-btn:hover {
    background-color: var(--hue-blue);
    filter: brightness(0.8);
}

.panel-spacer {
    flex-grow: 1;
}

/* ----- Keyboard Key (kbd) ----- */
.panel-kbd {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 5px;
    color: var(--text-primary);
    font-family: system-ui, -apple-system, sans-serif;
    font-size: var(--font-size-ui-sm);
    font-weight: 500;
    box-shadow:
        0 2px 0 rgba(0, 0, 0, 0.4),
        inset 0 1px 0 var(--border-subtle);
    white-space: nowrap;
}