/* ============================================================
   Reader-mode interaction panels — shared, non-scoped styles.

   Why a separate stylesheet (not *.razor.css)?
     Blazor's scoped-CSS attribute only attaches to elements
     inside the matching .razor file. The panels render comment
     bubbles + rating rows in a loop (and PageCommentsPanel uses
     a RenderFragment for the comment shape), so scoped CSS would
     miss most of the markup. comments.css burned us first; the
     publish-page checklist burned us second; this is the same
     pattern, hoisted to a stylesheet that both Web (App.razor)
     and MAUI (index.html) reference.
   ============================================================ */

/* ---- Panel envelope (slide-in drawer on tablet+, full-bleed on phone) ---- */
.page-comments-panel,
.chapter-rating-panel {
    position: fixed;
    top: 48px; /* sits flush below the reader top bar */
    right: 0;
    bottom: 0;
    width: min(420px, 100vw);
    background-color: var(--os-surface);
    border-left: 1px solid var(--os-border);
    box-shadow: var(--os-shadow-md);
    display: flex;
    flex-direction: column;
    z-index: 90;
    animation: reader-panel-slide-in var(--os-transition-fast) ease-out;
}

@keyframes reader-panel-slide-in {
    from { transform: translateX(16px); opacity: 0; }
    to   { transform: translateX(0);     opacity: 1; }
}

@media (max-width: 480px) {
    .page-comments-panel,
    .chapter-rating-panel {
        top: 48px;
        width: 100vw;
    }
}

/* ---- Headers ---- */
.page-comments-panel__header,
.chapter-rating-panel__header {
    display: flex;
    align-items: center;
    gap: var(--os-space-sm);
    padding: var(--os-space-md);
    border-bottom: 1px solid var(--os-border);
    background-color: var(--os-surface);
}

.page-comments-panel__title,
.chapter-rating-panel__title {
    flex: 1;
    margin: 0;
    font-size: var(--os-font-size-md);
    font-weight: var(--os-font-weight-semibold);
    color: var(--os-text-primary);
}

.page-comments-panel__close,
.chapter-rating-panel__close {
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border: none;
    background-color: transparent;
    color: var(--os-text-secondary);
    border-radius: var(--os-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--os-transition-fast), color var(--os-transition-fast);
}

.page-comments-panel__close:hover,
.page-comments-panel__close:focus-visible,
.chapter-rating-panel__close:hover,
.chapter-rating-panel__close:focus-visible {
    background-color: var(--os-surface-variant);
    color: var(--os-text-primary);
    outline: none;
}

/* ---- Bodies (scrollable) ---- */
.page-comments-panel__body,
.chapter-rating-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--os-space-md);
    display: flex;
    flex-direction: column;
    gap: var(--os-space-lg);
}

.page-comments-panel__loading,
.chapter-rating-panel__loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--os-space-xl) 0;
}

.page-comments-panel__empty,
.chapter-rating-panel__hint {
    color: var(--os-text-secondary);
    font-size: var(--os-font-size-sm);
    margin: 0;
}

/* ---- Page comments — chapter / paragraph groups ---- */
.page-comments-panel__chapter {
    display: flex;
    flex-direction: column;
    gap: var(--os-space-md);
}

.page-comments-panel__chapter-heading {
    margin: 0;
    font-size: var(--os-font-size-sm);
    font-weight: var(--os-font-weight-semibold);
    color: var(--os-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.page-comments-panel__paragraph {
    background-color: var(--os-background);
    border: 1px solid var(--os-border);
    border-radius: var(--os-radius-md);
    padding: var(--os-space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--os-space-sm);
}

.page-comments-panel__paragraph-heading {
    margin: 0;
    font-size: var(--os-font-size-xs);
    font-weight: var(--os-font-weight-medium);
    color: var(--os-text-secondary);
}

.page-comments-panel__thread,
.page-comments-panel__replies {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--os-space-sm);
}

.page-comments-panel__replies {
    margin-top: var(--os-space-sm);
    padding-left: var(--os-space-md);
    border-left: 2px solid var(--os-border);
}

/* ---- Comment bubble ---- */
.page-comments-panel__bubble {
    display: flex;
    gap: var(--os-space-sm);
}

.page-comments-panel__avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--os-radius-full);
    overflow: hidden;
    background: linear-gradient(135deg, #6d28d9, #3b1f6e);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--os-font-size-xs);
    font-weight: var(--os-font-weight-semibold);
    flex-shrink: 0;
}

.page-comments-panel__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-comments-panel__bubble-body {
    flex: 1;
    min-width: 0;
}

.page-comments-panel__bubble-meta {
    display: flex;
    align-items: center;
    gap: var(--os-space-xs);
    flex-wrap: wrap;
    font-size: var(--os-font-size-xs);
}

.page-comments-panel__author {
    font-weight: var(--os-font-weight-semibold);
    color: var(--os-text-primary);
}

.page-comments-panel__author-badge {
    font-size: 0.6875rem;
    font-weight: var(--os-font-weight-semibold);
    color: var(--os-primary);
    background-color: rgba(var(--os-primary-rgb, 27, 110, 194), 0.1);
    padding: 0 var(--os-space-xs);
    border-radius: var(--os-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.page-comments-panel__timestamp {
    color: var(--os-text-secondary);
}

.page-comments-panel__text {
    margin: var(--os-space-xs) 0 0;
    font-size: var(--os-font-size-sm);
    color: var(--os-text-primary);
    word-break: break-word;
    white-space: pre-wrap;
}

/* ---- Compose ---- */
.page-comments-panel__compose {
    display: flex;
    flex-direction: column;
    gap: var(--os-space-xs);
}

.page-comments-panel__input {
    width: 100%;
    resize: vertical;
    border: 1px solid var(--os-border);
    border-radius: var(--os-radius-md);
    padding: var(--os-space-sm);
    background-color: var(--os-surface);
    color: var(--os-text-primary);
    font-size: var(--os-font-size-sm);
    font-family: inherit;
    transition: border-color var(--os-transition-fast), box-shadow var(--os-transition-fast);
}

.page-comments-panel__input:focus {
    border-color: var(--os-primary);
    box-shadow: 0 0 0 3px rgba(var(--os-primary-rgb, 27, 110, 194), 0.12);
    outline: none;
}

.page-comments-panel__sign-in-hint {
    font-size: var(--os-font-size-xs);
    color: var(--os-text-secondary);
    margin: 0;
    font-style: italic;
}

/* ---- Chapter rating panel ---- */
.chapter-rating-panel__row {
    display: flex;
    flex-direction: column;
    gap: var(--os-space-xs);
    padding: var(--os-space-sm);
    background-color: var(--os-background);
    border: 1px solid var(--os-border);
    border-radius: var(--os-radius-md);
}

.chapter-rating-panel__chapter-title {
    margin: 0;
    font-size: var(--os-font-size-sm);
    font-weight: var(--os-font-weight-semibold);
    color: var(--os-text-primary);
}

.chapter-rating-panel__user,
.chapter-rating-panel__aggregate {
    display: flex;
    align-items: center;
    gap: var(--os-space-sm);
    flex-wrap: wrap;
}

.chapter-rating-panel__aggregate {
    color: var(--os-text-secondary);
    font-size: var(--os-font-size-xs);
}

/* Compact text-only aggregate caption shown beneath the interactive
   stars in the signed-in non-author branch — replaces the second
   StarRating that used to render here, so each chapter shows exactly
   one row of stars. Hidden entirely when RatingCount is 0. */
.chapter-rating-panel__aggregate-caption {
    margin: 0;
    color: var(--os-text-secondary);
    font-size: var(--os-font-size-xs);
}

.chapter-rating-panel__clear {
    font-size: var(--os-font-size-xs);
}

.chapter-rating-panel__row--readonly .star-rating__star--interactive {
    cursor: default;
}