/**
 * Discussion System CSS
 * Reddit-style threaded comments with premium styling
 *
 * Features:
 * - Thread indentation with visual connectors
 * - Upvote/downvote button styling
 * - User badges and avatars
 * - Corpus citation styling
 * - Collapsible threads
 * - Responsive design
 * - Dark/light theme support
 * - Accessibility focus states
 */

/* ==================== CSS Variables ==================== */

:root {
    /* Discussion colors */
    --discussion-bg: rgba(255, 255, 255, 0.03);
    --discussion-border: rgba(255, 255, 255, 0.1);
    --discussion-hover: rgba(255, 255, 255, 0.05);

    /* Comment thread */
    --comment-line-color: rgba(255, 255, 255, 0.15);
    --comment-line-hover: rgba(139, 92, 246, 0.4);
    --comment-indent: 24px;
    --comment-indent-mobile: 16px;

    /* Vote colors */
    --upvote-color: #10b981;
    --upvote-hover: #34d399;
    --upvote-bg: rgba(16, 185, 129, 0.1);
    --downvote-color: #ef4444;
    --downvote-hover: #f87171;
    --downvote-bg: rgba(239, 68, 68, 0.1);
    --vote-neutral: rgba(255, 255, 255, 0.5);

    /* User badge colors */
    --badge-newcomer: #6b7280;
    --badge-contributor: #3b82f6;
    --badge-scholar: #8b5cf6;
    --badge-sage: #f59e0b;
    --badge-master: #ef4444;
    --badge-legend: linear-gradient(135deg, #fbbf24, #f59e0b, #ef4444, #ec4899, #8b5cf6);

    /* Corpus citation */
    --corpus-bg: rgba(139, 92, 246, 0.1);
    --corpus-border: rgba(139, 92, 246, 0.3);
    --corpus-text: #a78bfa;

    /* Validation */
    --validation-valid: #10b981;
    --validation-invalid: #ef4444;
    --validation-pending: #f59e0b;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Light theme overrides */
[data-theme="light"] {
    --discussion-bg: rgba(0, 0, 0, 0.02);
    --discussion-border: rgba(0, 0, 0, 0.1);
    --discussion-hover: rgba(0, 0, 0, 0.04);
    --comment-line-color: rgba(0, 0, 0, 0.1);
    --comment-line-hover: rgba(139, 92, 246, 0.5);
    --vote-neutral: rgba(0, 0, 0, 0.4);
}


/* ==================== Asset Discussion Container ==================== */

.asset-discussion {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--discussion-bg);
    border: 1px solid var(--discussion-border);
    border-radius: 12px;
}

.discussion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--discussion-border);
}

.discussion-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.discussion-icon {
    width: 24px;
    height: 24px;
    stroke: var(--accent-primary, #8b5cf6);
}

.comment-count {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.discussion-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.discussion-sort-select {
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    font-size: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--discussion-border);
    border-radius: 6px;
    color: var(--text-primary, #fff);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    transition: border-color var(--transition-fast);
}

.discussion-sort-select:hover,
.discussion-sort-select:focus {
    border-color: var(--accent-primary, #8b5cf6);
    outline: none;
}


/* ==================== Comments List ==================== */

.discussion-comments-list {
    min-height: 100px;
}

.discussion-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.discussion-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--discussion-border);
    border-top-color: var(--accent-primary, #8b5cf6);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.discussion-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
}

.discussion-empty .empty-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    stroke: var(--text-secondary, rgba(255, 255, 255, 0.4));
}

.discussion-empty .empty-title {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.discussion-empty .empty-subtitle {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.discussion-load-more {
    display: block;
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary, #8b5cf6);
    background: transparent;
    border: 1px solid var(--accent-primary, #8b5cf6);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.discussion-load-more:hover {
    background: rgba(139, 92, 246, 0.1);
}

.discussion-error {
    padding: 1rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
}


/* ==================== Comment Card ==================== */

.discussion-comment {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    position: relative;
}

/* Thread lines */
.discussion-comment[data-depth]:not([data-depth="0"]) {
    margin-left: calc(var(--comment-indent) * var(--depth));
    padding-left: 0.75rem;
    border-left: 2px solid var(--comment-line-color);
}

.discussion-comment[data-depth]:not([data-depth="0"]):hover {
    border-left-color: var(--comment-line-hover);
}

/* Highlighted comment */
.discussion-comment.highlighted {
    animation: highlight-pulse 3s ease-out;
}

@keyframes highlight-pulse {
    0%, 100% { background: transparent; }
    10%, 50% { background: rgba(139, 92, 246, 0.15); }
}

/* Collapsed comment */
.discussion-comment.collapsed .comment-content,
.discussion-comment.collapsed .comment-actions,
.discussion-comment.collapsed .comment-corpus-citation,
.discussion-comment.collapsed .comment-replies,
.discussion-comment.collapsed .comment-reply-form-container {
    display: none;
}


/* ==================== Vote Column ==================== */

.comment-vote-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    min-width: 32px;
}

.comment-vote-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--vote-neutral);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comment-vote-btn svg {
    width: 16px;
    height: 16px;
}

.comment-vote-btn:hover {
    background: var(--discussion-hover);
}

.comment-vote-btn.upvote:hover,
.comment-vote-btn.upvote.active {
    color: var(--upvote-color);
    background: var(--upvote-bg);
}

.comment-vote-btn.downvote:hover,
.comment-vote-btn.downvote.active {
    color: var(--downvote-color);
    background: var(--downvote-bg);
}

.comment-vote-btn:focus-visible {
    outline: 2px solid var(--accent-primary, #8b5cf6);
    outline-offset: 2px;
}

.comment-vote-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    line-height: 1;
}

.comment-vote-count.positive {
    color: var(--upvote-color);
}

.comment-vote-count.negative {
    color: var(--downvote-color);
}


/* ==================== Comment Main Content ==================== */

.comment-main {
    flex: 1;
    min-width: 0;
}

.comment-header {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.8125rem;
}

.comment-collapse-btn {
    padding: 0.125rem 0.25rem;
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
    background: transparent;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.comment-collapse-btn:hover {
    color: var(--accent-primary, #8b5cf6);
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comment-author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.comment-author-avatar.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
}

.comment-author-name {
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.comment-author-badges {
    display: flex;
    gap: 0.25rem;
}

.comment-separator {
    color: var(--text-secondary, rgba(255, 255, 255, 0.3));
}

.comment-time {
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
}

.comment-edited {
    font-size: 0.75rem;
    font-style: italic;
    color: var(--text-secondary, rgba(255, 255, 255, 0.4));
}

.comment-collapsed-info {
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
}


/* ==================== Comment Content ==================== */

.comment-content {
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-primary, rgba(255, 255, 255, 0.9));
    word-wrap: break-word;
}

.comment-content a {
    color: var(--accent-primary, #8b5cf6);
    text-decoration: none;
}

.comment-content a:hover {
    text-decoration: underline;
}

.comment-content strong {
    font-weight: 600;
}

.comment-content em {
    font-style: italic;
}


/* ==================== Corpus Citation ==================== */

.comment-corpus-citation {
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    background: var(--corpus-bg);
    border: 1px solid var(--corpus-border);
    border-radius: 8px;
}

.corpus-citation-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.corpus-icon {
    width: 16px;
    height: 16px;
    stroke: var(--corpus-text);
}

.corpus-citation-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--corpus-text);
}

.corpus-citation-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--corpus-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.corpus-citation-link:hover {
    color: #c4b5fd;
}

.corpus-query-term {
    font-style: italic;
}

.corpus-result-count {
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
}


/* ==================== Comment Actions ==================== */

.comment-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.comment-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comment-action-btn svg {
    width: 14px;
    height: 14px;
}

.comment-action-btn:hover {
    color: var(--text-primary, #fff);
    background: var(--discussion-hover);
}

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

.comment-mod-badge {
    padding: 0.125rem 0.5rem;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #10b981;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 4px;
}


/* ==================== Reply Form Container ==================== */

.comment-reply-form-container {
    margin-top: 0.75rem;
}

.comment-replies {
    margin-top: 0.5rem;
}


/* ==================== Submit Form ==================== */

.discussion-submit-container {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--discussion-border);
}

.discussion-submit-form.reply-form {
    padding: 1rem;
    background: var(--discussion-hover);
    border-radius: 8px;
}

.discussion-submit-form .form-header {
    margin-bottom: 1rem;
}

.discussion-submit-form .form-title {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.discussion-submit-form .form-subtitle {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.form-auth-check {
    margin-bottom: 1rem;
}

.form-user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.7));
}

.form-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.form-user-avatar.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
}

.form-login-prompt {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(139, 92, 246, 0.1);
    border: 1px dashed rgba(139, 92, 246, 0.3);
    border-radius: 8px;
    color: var(--text-secondary, rgba(255, 255, 255, 0.7));
}

.form-login-prompt svg {
    width: 20px;
    height: 20px;
    stroke: var(--accent-primary, #8b5cf6);
}

.form-login-btn {
    margin-left: auto;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #fff;
    background: var(--accent-primary, #8b5cf6);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.form-login-btn:hover {
    background: #7c3aed;
}


/* ==================== Form Fields ==================== */

.form-fields {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary, #fff);
}

.form-label .corpus-icon {
    width: 16px;
    height: 16px;
}

.required-indicator {
    color: var(--downvote-color);
}

.textarea-wrapper {
    position: relative;
}

.form-textarea {
    width: 100%;
    padding: 0.75rem;
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-primary, #fff);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--discussion-border);
    border-radius: 8px;
    resize: vertical;
    min-height: 100px;
    transition: border-color var(--transition-fast);
}

.form-textarea:focus {
    border-color: var(--accent-primary, #8b5cf6);
    outline: none;
}

.form-textarea::placeholder {
    color: var(--text-secondary, rgba(255, 255, 255, 0.4));
}

.char-count {
    position: absolute;
    right: 0.75rem;
    bottom: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.4));
}

.char-count.near-limit {
    color: var(--validation-pending);
}

.char-count.over-limit {
    color: var(--validation-invalid);
}

.corpus-input-wrapper {
    display: flex;
    gap: 0.5rem;
}

.form-input {
    flex: 1;
    padding: 0.75rem;
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--text-primary, #fff);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--discussion-border);
    border-radius: 8px;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--accent-primary, #8b5cf6);
    outline: none;
}

.corpus-search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    padding: 0;
    background: var(--accent-primary, #8b5cf6);
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.corpus-search-btn:hover {
    background: #7c3aed;
}

.corpus-search-btn svg {
    width: 20px;
    height: 20px;
}

.corpus-search-btn.loading {
    background: var(--discussion-border);
    pointer-events: none;
}

.corpus-search-btn.loading svg {
    animation: spin 0.8s linear infinite;
}

.form-hint {
    margin: 0;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
}


/* ==================== Corpus Preview ==================== */

.corpus-preview-container {
    padding: 1rem;
    background: var(--corpus-bg);
    border: 1px solid var(--corpus-border);
    border-radius: 8px;
}

.corpus-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.corpus-preview-title {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--corpus-text);
}

.corpus-preview-close {
    display: flex;
    padding: 0.25rem;
    background: transparent;
    border: none;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
    cursor: pointer;
    transition: color var(--transition-fast);
}

.corpus-preview-close:hover {
    color: var(--text-primary, #fff);
}

.corpus-preview-close svg {
    width: 16px;
    height: 16px;
}

.corpus-no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    text-align: center;
}

.corpus-no-results svg {
    width: 32px;
    height: 32px;
    margin-bottom: 0.5rem;
    stroke: var(--text-secondary, rgba(255, 255, 255, 0.4));
}

.corpus-no-results p {
    margin: 0;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.corpus-no-results .hint {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.corpus-results-count {
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}

.corpus-results-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.corpus-result-item {
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
}

.corpus-result-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
}

.corpus-result-source {
    padding: 0.125rem 0.375rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 3px;
}

.corpus-result-source.github {
    color: #fff;
    background: #238636;
}

.corpus-result-source.firebase {
    color: #fff;
    background: #ff9800;
}

.corpus-result-title {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary, #fff);
}

.corpus-result-context {
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-secondary, rgba(255, 255, 255, 0.7));
}

.corpus-result-context mark {
    background: rgba(251, 191, 36, 0.3);
    color: inherit;
    padding: 0.125rem 0.25rem;
    border-radius: 2px;
}

.corpus-results-more {
    margin: 0.5rem 0 0;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.5));
}


/* ==================== Validation Status ==================== */

.validation-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
}

.validation-status.valid {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.validation-status.invalid {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.validation-icon svg {
    width: 20px;
    height: 20px;
}

.validation-status.valid .validation-icon {
    color: var(--validation-valid);
}

.validation-status.invalid .validation-icon {
    color: var(--validation-invalid);
}

.validation-message {
    font-size: 0.875rem;
    color: var(--text-primary, rgba(255, 255, 255, 0.9));
}


/* ==================== Preview Container ==================== */

.preview-container {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--discussion-border);
    border-radius: 8px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.preview-title {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary, rgba(255, 255, 255, 0.7));
}

.preview-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    background: transparent;
    border: 1px solid var(--discussion-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preview-toggle:hover {
    border-color: var(--accent-primary, #8b5cf6);
    color: var(--accent-primary, #8b5cf6);
}

.preview-toggle svg {
    width: 14px;
    height: 14px;
}

.preview-content {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-primary, rgba(255, 255, 255, 0.9));
}


/* ==================== Form Actions ==================== */

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.form-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.form-btn .btn-icon {
    width: 16px;
    height: 16px;
}

.form-btn .btn-loading {
    display: none;
}

.form-btn.loading .btn-text,
.form-btn.loading .btn-icon {
    visibility: hidden;
}

.form-btn.loading .btn-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.form-btn .spinner {
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.cancel-btn {
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    background: transparent;
    border: 1px solid var(--discussion-border);
}

.cancel-btn:hover {
    color: var(--text-primary, #fff);
    border-color: var(--text-secondary);
}

.validate-btn {
    color: var(--text-primary, #fff);
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--accent-primary, #8b5cf6);
}

.validate-btn:hover:not(:disabled) {
    background: rgba(139, 92, 246, 0.3);
}

.validate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.submit-btn {
    color: #fff;
    background: var(--accent-primary, #8b5cf6);
    border: none;
}

.submit-btn:hover:not(:disabled) {
    background: #7c3aed;
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-error {
    padding: 0.75rem 1rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
}


/* ==================== Toast Notifications ==================== */

.discussion-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #fff;
    background: #1f2937;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 9999;
}

.discussion-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}


/* ==================== Responsive Design ==================== */

@media (max-width: 768px) {
    .asset-discussion {
        padding: 1rem;
        border-radius: 8px;
    }

    .discussion-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .discussion-comment[data-depth]:not([data-depth="0"]) {
        margin-left: calc(var(--comment-indent-mobile) * var(--depth));
    }

    .comment-vote-column {
        min-width: 28px;
    }

    .comment-vote-btn {
        width: 24px;
        height: 24px;
    }

    .comment-vote-btn svg {
        width: 14px;
        height: 14px;
    }

    .comment-header {
        font-size: 0.75rem;
    }

    .comment-author-avatar {
        width: 20px;
        height: 20px;
    }

    .comment-content {
        font-size: 0.875rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-btn {
        width: 100%;
        justify-content: center;
    }
}


/* ==================== Accessibility ==================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible for keyboard navigation */
.comment-vote-btn:focus-visible,
.comment-action-btn:focus-visible,
.discussion-sort-select:focus-visible,
.form-btn:focus-visible,
.form-textarea:focus-visible,
.form-input:focus-visible {
    outline: 2px solid var(--accent-primary, #8b5cf6);
    outline-offset: 2px;
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* ==================== User Badge Compact Styles ==================== */

.comment-author-badges .badge-item {
    width: 18px;
    height: 18px;
    font-size: 0.625rem;
}

.comment-author-badges .badge-icon {
    width: 12px;
    height: 12px;
}