/*
 * Comments Panel
 *
 * Provides threaded comments for cards, drafts, and project tasks.
 *
 * Two display modes:
 *  1. Overlay (.comments-overlay) — slides up from the bottom of .entity-side-panel,
 *     covering 50% of the panel height. Used for card and draft comments.
 *  2. Inline (.pp-comments-section) — appended inside .pp-task-detail-body for task
 *     comments. No overlay behaviour.
 *
 * Uses variables from /client/css/variables.css
 */

/* ═══════════════════════════════════════════════════════════════════════════
   NCP TITLE BAR ACTION GROUP
   Groups .ncp-info-btn and .ncp-comment-btn together in the title bar
   ═══════════════════════════════════════════════════════════════════════════ */

.ncp-title-bar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-shrink: 0;
    margin-left: auto;
}

/* ═══════════════════════════════════════════════════════════════════════════
   COMMENT TRIGGER BUTTON (next to .ncp-info-btn)
   ═══════════════════════════════════════════════════════════════════════════ */

.ncp-comment-btn,
.ncp-annotation-visibility-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    height: 26px;
    padding: 0 var(--space-2);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-ink-lighter);
    font-size: var(--text-xs);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
}

.ncp-comment-btn:hover,
.ncp-annotation-visibility-btn:hover {
    background: var(--color-accent-subtle);
    color: var(--color-ink);
    border-color: var(--border-color-strong);
}

.ncp-comment-btn.is-active,
.ncp-annotation-visibility-btn.is-active {
    background: var(--color-accent-subtle);
    color: var(--color-ink);
    border-color: var(--border-color-strong);
}

.ncp-annotation-visibility-btn {
    justify-content: center;
    padding: 0 7px;
}

.ncp-annotation-visibility-btn svg {
    flex-shrink: 0;
}

.ncp-comment-count {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    min-width: 10px;
    text-align: center;
    line-height: 1;
}

.ncp-comment-count:empty {
    display: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   OVERLAY ANCHOR
   The .entity-side-panel needs position:relative to contain the overlay.
   ═══════════════════════════════════════════════════════════════════════════ */

.entity-side-panel {
    position: relative;
}

comments-panel[el-is="comments-panel"] {
    display: block;
    min-height: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   SLIDE-UP OVERLAY (cards / drafts)
   ═══════════════════════════════════════════════════════════════════════════ */

.comments-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    min-height: 240px;
    background: var(--main-background-color);
    border-top: var(--border-width) solid var(--border-color-strong);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    z-index: 20;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
    overflow: hidden;
}

.comments-overlay--open {
    transform: translateY(0);
}

.entity-side-panel-container.side-panel-comments-split .entity-side-panel {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
    grid-template-rows: auto auto minmax(0, 1fr);
}

.entity-side-panel-container.side-panel-comments-split .side-panel-header,
.entity-side-panel-container.side-panel-comments-split .side-panel-layout-strip {
    grid-column: 1 / -1;
}

.entity-side-panel-container.side-panel-comments-split .side-panel-body {
    grid-column: 1;
    grid-row: 3;
    max-width: none;
    width: 100%;
    min-width: 0;
}

.entity-side-panel-container.side-panel-comments-split comments-panel[el-is="comments-panel"] {
    grid-column: 2;
    grid-row: 3;
    display: block;
    height: 100%;
    min-width: 0;
    border-left: var(--border-width) solid var(--border-color);
    background: var(--main-background-color);
}

.comments-overlay--split {
    position: relative;
    inset: auto;
    height: 100%;
    min-height: 0;
    border-top: none;
    border-radius: 0;
    box-shadow: none;
    transform: none;
    z-index: auto;
}

.comments-overlay--split .comments-overlay-handle {
    display: none;
}

.comments-overlay--split .comments-overlay-header {
    padding: var(--space-2) var(--space-5);
    height: 43px;
    background: var(--main-background-color);
}

.comments-overlay--split .comments-list-area {
    min-height: 0;
}

.comments-overlay--split [data-comments-footer] {
    border-top: var(--border-width) solid var(--border-color);
    background: var(--main-background-color);
}

/* Drag handle at the top of the overlay */
.comments-overlay-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) 0 var(--space-1);
    flex-shrink: 0;
    cursor: default;
}

.comments-overlay-handle-bar {
    width: 32px;
    height: 3px;
    border-radius: var(--radius-full);
    background: var(--border-color-strong);
}

/* Overlay header: title + close button */
.comments-overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4) var(--space-2);
    flex-shrink: 0;
    border-bottom: var(--border-width) solid var(--border-color);
}

.comments-overlay-title {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-ink);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.comments-overlay-title-count {
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    font-weight: var(--weight-normal);
}

.comments-overlay-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-ink-lighter);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
}

.comments-overlay-close:hover {
    background: var(--color-accent-subtle);
    color: var(--color-ink);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SHARED COMMENT LIST AREA
   Used in both the overlay and the inline task section
   ═══════════════════════════════════════════════════════════════════════════ */

.comments-list-area {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    scrollbar-width: thin;
    scrollbar-color: var(--main-background-color-third) var(--main-background-color);
}

.comments-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-3) var(--space-4);
    gap: var(--space-4);
}

.comments-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-6) var(--space-4);
    color: var(--color-ink-lighter);
    font-size: var(--text-sm);
    text-align: center;
}

.comments-empty svg {
    opacity: 0.4;
}

.comments-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6) var(--space-4);
    color: var(--color-ink-lighter);
    font-size: var(--text-sm);
}

/* ── Individual Comment Item ───────────────────────────────────────────────── */

.comment-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.comment-item + .comment-item {
    padding-top: var(--space-4);
    border-top: var(--border-width) solid var(--border-color);
}

.comment-body {
    display: flex;
    gap: var(--space-2);
    align-items: flex-start;
}

.comment-avatar {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--main-background-color-secondary);
    border: var(--border-width) solid var(--border-color);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--color-ink-lighter);
    text-transform: uppercase;
}

.comment-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comment-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.comment-meta {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.comment-author {
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--color-ink);
}

.comment-time {
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
}

.comment-edited-badge {
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    font-style: italic;
}

.comment-content {
    font-size: var(--text-sm);
    color: var(--color-ink);
    line-height: var(--leading-relaxed);
    white-space: pre-wrap;
    word-break: break-word;
}

.comment-content .comment-mention {
    display: inline-flex;
    align-items: center;
    color: var(--color-target);
    font-weight: var(--weight-medium);
    font-size: 0.8em;
    background: var(--color-target-bg);
    border: 0.5px solid color-mix(in srgb, var(--color-target) 25%, transparent);
    border-radius: var(--radius-full);
    padding: 1px var(--space-2);
    white-space: nowrap;
    vertical-align: baseline;
    line-height: 1.6;
}


/* ── Comment Actions (like / reply / edit / delete) ────────────────────────── */

.comment-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding-left: 36px; /* align with text (28px avatar + 8px gap) */
}

.comment-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    height: 22px;
    padding: 0 var(--space-2);
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-ink-lighter);
    font-size: var(--text-xs);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.comment-action-btn:hover {
    background: var(--color-accent-subtle);
    color: var(--color-ink);
}

.comment-action-btn.is-liked {
    color: var(--color-error);
}

.comment-action-btn.is-liked:hover {
    color: var(--color-error);
}

.comment-action-btn--danger:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.comment-like-count {
    font-weight: var(--weight-medium);
}

/* ── Reply Chain ────────────────────────────────────────────────────────────── */

.comment-replies {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-left: 36px;
    border-left: 2px solid var(--border-color);
    margin-left: 14px; /* center the border under the avatar */
    margin-top: var(--space-2);
}

.comment-item--reply .comment-avatar {
    width: 22px;
    height: 22px;
    font-size: 9px;
}

.comment-item--reply .comment-actions {
    padding-left: 30px;
}

.show-replies-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    margin-left: 36px;
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-target);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-sans);
    transition: opacity var(--transition-fast);
}

.show-replies-btn:hover {
    opacity: 0.75;
}

/* ── Inline edit area ───────────────────────────────────────────────────────── */

.comment-edit-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding-left: 36px;
}

.comment-edit-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: var(--border-width) solid var(--border-color-strong);
    border-radius: var(--radius-md);
    background: var(--main-background-color-secondary);
    color: var(--color-ink);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    line-height: var(--leading-relaxed);
    resize: vertical;
    min-height: 64px;
    box-sizing: border-box;
    transition: border-color var(--transition-fast);
}

.comment-edit-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.comment-edit-actions {
    display: flex;
    gap: var(--space-2);
}

/* ═══════════════════════════════════════════════════════════════════════════
   COMMENT INPUT FOOTER
   Sticky at the bottom of both the overlay and inline section
   ═══════════════════════════════════════════════════════════════════════════ */

.comments-input-footer {
    flex-shrink: 0;
    border-top: var(--border-width) solid var(--border-color);
    padding: var(--space-3) var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    background: var(--main-background-color);
}

/* Reply-to banner shown above textarea when replying */
.comments-reply-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: var(--color-accent-subtle);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--color-accent);
    font-size: var(--text-xs);
    color: var(--color-ink-light);
}

.comments-reply-cancel {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border: none;
    background: transparent;
    color: var(--color-ink-lighter);
    cursor: pointer;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.comments-reply-cancel:hover {
    color: var(--color-ink);
}

.comments-input-row {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.comments-textarea-wrap {
    flex: 1;
    position: relative;
}

.comments-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    /* border: var(--border-width) solid var(--border-color-strong); */
    border-radius: var(--radius-xl);
    background: var(--main-background-color-secondary);
    color: var(--color-ink);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    line-height: var(--leading-relaxed);
    resize: none;
    max-height: 160px;
    box-sizing: border-box;
    overflow-y: auto;
    transition: border-color var(--transition-fast), height var(--transition-fast);
    scrollbar-width: thin;
    scrollbar-color: var(--main-background-color-third) var(--main-background-color-secondary);
}

.comments-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.comments-textarea::placeholder {
    color: var(--color-ink-lighter);
}

.comments-textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.comments-submit-btn {
    flex-shrink: 0;
    height: 32px;
    padding: 0 var(--space-3);
    border: var(--border-width) solid var(--border-color-strong);
    border-radius: var(--radius-full);
    background: var(--color-accent);
    color: var(--main-background-color);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: opacity var(--transition-fast);
    white-space: nowrap;
}

.comments-submit-btn:hover:not(:disabled) {
    opacity: 0.85;
}

.comments-submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Read-only notice for viewers */
.comments-readonly-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    background: var(--main-background-color-secondary);
    border-radius: var(--radius-sm);
    border: var(--border-width) solid var(--border-color);
}

/* ═══════════════════════════════════════════════════════════════════════════
   @MENTION DROPDOWN
   ═══════════════════════════════════════════════════════════════════════════ */

.mention-dropdown {
    position: absolute;
    bottom: calc(100% + var(--space-1));
    left: 0;
    right: 0;
    background: var(--main-background-color);
    border: var(--border-width) solid var(--border-color-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 180px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
    scrollbar-width: thin;
    scrollbar-color: var(--main-background-color-third) var(--main-background-color);
}

.mention-dropdown-empty {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-ink-lighter);
    text-align: center;
}

.mention-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    width: 100%;
    text-align: left;
    background: transparent;
    font-family: var(--font-sans);
}

.mention-option:hover,
.mention-option.is-selected {
    background: var(--color-accent-subtle);
}

.mention-option-avatar {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-full);
    background: var(--main-background-color-secondary);
    border: var(--border-width) solid var(--border-color);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: var(--weight-semibold);
    color: var(--color-ink-lighter);
    text-transform: uppercase;
}

.mention-option-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mention-option-name {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--color-ink);
}

.mention-option-username {
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    margin-left: auto;
    padding-left: var(--space-2);
}

/* ═══════════════════════════════════════════════════════════════════════════
   INLINE TASK COMMENTS SECTION (.pp-task-detail-body)
   ═══════════════════════════════════════════════════════════════════════════ */

.pp-comments-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-4);
    border-top: var(--border-width) solid var(--border-color);
}

.pp-comments-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--color-ink-lighter);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pp-comments-label-count {
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    font-weight: var(--weight-normal);
    text-transform: none;
    letter-spacing: 0;
}

/* In-task comment list inherits .comments-list but without overlay container height */
.pp-comments-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    height: 100%;
}

/* In-task input area shares the same design as the overlay footer */
.pp-comment-input-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SMALL UTILITY BUTTONS (shared with project-panel style)
   ═══════════════════════════════════════════════════════════════════════════ */

.comment-small-btn {
    display: inline-flex;
    align-items: center;
    height: 26px;
    padding: 0 var(--space-2);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-ink-lighter);
    font-size: var(--text-xs);
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.comment-small-btn:hover {
    background: var(--color-accent-subtle);
    color: var(--color-ink);
}

.comment-small-btn--danger:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
    border-color: var(--color-error-bg);
}

/* ═══════════════════════════════════════════════════════════════════════════
   DARK MODE OVERRIDES
   ═══════════════════════════════════════════════════════════════════════════ */

html[data-theme="dark"] .comments-overlay {
    background: var(--main-background-color);
    border-top-color: var(--border-color-strong);
}

html[data-theme="dark"] .comments-textarea,
html[data-theme="dark"] .comment-edit-textarea {
    background: var(--main-background-color-secondary);
    border-color: var(--border-color-strong);
    color: var(--color-ink);
}

html[data-theme="dark"] .comments-textarea:focus,
html[data-theme="dark"] .comment-edit-textarea:focus {
    border-color: var(--color-accent);
}

html[data-theme="dark"] .mention-dropdown {
    background: var(--main-background-color-secondary);
    border-color: var(--border-color-strong);
}

/* ═══════════════════════════════════════════════════════════════════════════
   LIQUID GLASS THEME
   ═══════════════════════════════════════════════════════════════════════════ */

html[data-theme="liquid-glass"] .comments-overlay {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-top: 0.5px solid rgba(255, 255, 255, 0.4);
}

html[data-theme="liquid-glass"] .mention-dropdown {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* ═══════════════════════════════════════════════════════════════════════════
   ANNOTATION FEATURES
   Pinned-text quote block, annotation pending banner, public comment badge
   ═══════════════════════════════════════════════════════════════════════════ */

/* Quoted text block shown above a comment that was pinned to a selection */
.comment-annotation-quote {
    display: flex;
    align-items: flex-start;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    border-left: 2px solid rgba(190, 145, 0, 0.55);
    background: rgba(255, 214, 10, 0.08);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: var(--space-1);
}

.comment-annotation-quote svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: rgba(190, 145, 0, 0.8);
}

.comment-annotation-quote blockquote {
    margin: 0;
    padding: 0;
    font-size: var(--text-xs);
    color: var(--color-ink-light);
    font-style: italic;
    line-height: var(--leading-snug);
    word-break: break-word;
}

/* Banner shown inside the comment input footer when a text pin is pending */
.comments-annotation-banner {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: rgba(255, 214, 10, 0.10);
    border-radius: var(--radius-sm);
    border-left: 2px solid rgba(190, 145, 0, 0.55);
    font-size: var(--text-xs);
    color: var(--color-ink-light);
}

.comments-annotation-banner em {
    font-style: italic;
    color: var(--color-ink);
}

.comments-annotation-cancel {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    margin-left: auto;
    border: none;
    background: transparent;
    color: var(--color-ink-light);
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 0;
    font-size: 13px;
    line-height: 1;
}

.comments-annotation-cancel:hover {
    background: var(--color-bg-hover, rgba(0,0,0,0.06));
    color: var(--color-ink);
}

/* "Public" badge shown on comments posted from the public page */
.comment-badge-public {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-accent, #4f6ef7);
    background: rgba(79, 110, 247, 0.08);
    border: 1px solid rgba(79, 110, 247, 0.20);
    border-radius: var(--radius-full, 9999px);
    line-height: 1.4;
    user-select: none;
}

/* Public comment items get a very subtle left accent */
.comment-item--public {
    border-left: 2px solid rgba(79, 110, 247, 0.15);
    padding-left: var(--space-2);
}