/* ============================================
   COMMUNITY FORUM - COMPLETE STYLES
   ============================================ */

/* CSS Variables */
.community-hero,
.community-main,
.question-page {
    --brand: #667eea;
    --brand-dark: #5a67d8;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --ai-color: #8b5cf6;
}

/* ==================== HERO SECTION ==================== */
.community-hero {
    background: var(--gradient);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.community-hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.community-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #fff;
    margin: 0 0 16px;
}

.community-hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 28px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.hero-stats .stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: #fff;
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
}

.btn-ask-question {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: #fff;
    color: var(--brand);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-ask-question:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* ==================== MAIN LAYOUT ==================== */
.community-main {
    background: var(--bg, #f8fafc);
    padding: 40px 0 60px;
    min-height: 60vh;
}

.community-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
}

/* ==================== SIDEBAR ==================== */
.community-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-card {
    background: var(--card, #fff);
    border-radius: 14px;
    padding: 20px;
    border: 1px solid var(--border, #e2e8f0);
}

.sidebar-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text, #1a202c);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-card h4 i {
    color: var(--brand);
}

/* Search */
.search-form {
    display: flex;
    gap: 8px;
}

.search-form input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--bg, #f8fafc);
    color: var(--text, #1a202c);
}

.search-form button {
    padding: 10px 14px;
    background: var(--brand);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

/* Filters */
.filter-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.filter-list li {
    margin-bottom: 4px;
}

.filter-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text, #475569);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.filter-list a:hover {
    background: var(--bg, #f1f5f9);
}

.filter-list a.active {
    background: rgba(102, 126, 234, 0.1);
    color: var(--brand);
    font-weight: 600;
}

.filter-list a i {
    font-size: 1rem;
}

/* Tags */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 12px;
    background: var(--bg, #f1f5f9);
    color: var(--text, #475569);
    border-radius: 20px;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tag:hover {
    background: var(--brand);
    color: #fff;
}

.tag.active {
    background: var(--brand);
    color: #fff;
}

.tag-count {
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.7rem;
}

/* Course Filter */
.course-filter {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--card, #fff);
    color: var(--text, #1a202c);
}

/* AI Card */
.ai-card {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #fff;
    border: none;
}

.ai-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.ai-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.ai-card h4 {
    color: #fff;
    margin: 0;
}

.ai-status {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: rgba(16, 185, 129, 0.3);
    border-radius: 10px;
}

.ai-status.online::before {
    content: '●';
    margin-right: 4px;
    color: #10b981;
}

.ai-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0 0 16px;
    line-height: 1.5;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ai-features span {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-features i {
    color: #10b981;
}

/* ==================== QUESTIONS LIST ==================== */
.questions-container {
    min-width: 0;
}

.active-filters {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--card, #fff);
    border-radius: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    border: 1px solid var(--border, #e2e8f0);
}

.active-filters > span {
    font-size: 0.9rem;
    color: var(--muted, #64748b);
}

.filter-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--brand);
    border-radius: 20px;
    font-size: 0.85rem;
}

.filter-badge a {
    color: inherit;
    opacity: 0.7;
}

.filter-badge a:hover {
    opacity: 1;
}

.clear-all {
    margin-left: auto;
    color: var(--danger);
    font-size: 0.85rem;
    text-decoration: none;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--card, #fff);
    border-radius: 16px;
    border: 1px solid var(--border, #e2e8f0);
}

.empty-icon {
    width: 80px;
    height: 80px;
    background: var(--bg, #f1f5f9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--muted, #64748b);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin: 0 0 8px;
    color: var(--text, #1a202c);
}

.empty-state p {
    color: var(--muted, #64748b);
    margin: 0 0 20px;
}

/* Question Cards */
.questions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.question-card {
    display: grid;
    grid-template-columns: 60px 70px 60px 1fr;
    gap: 16px;
    padding: 20px;
    background: var(--card, #fff);
    border-radius: 12px;
    border: 1px solid var(--border, #e2e8f0);
    transition: all 0.2s;
}

.question-card:hover {
    border-color: var(--brand);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.question-card.solved {
    border-left: 4px solid var(--success);
}

.question-votes,
.question-answers,
.question-views {
    text-align: center;
    padding: 8px 0;
}

.vote-count,
.answer-count,
.view-count {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text, #1a202c);
}

.vote-label,
.answer-label,
.view-label {
    font-size: 0.75rem;
    color: var(--muted, #64748b);
}

.question-answers.has-answers {
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
}

.question-answers.has-answers .answer-count {
    color: var(--brand);
}

.question-answers.accepted {
    background: var(--success);
}

.question-answers.accepted .answer-count,
.question-answers.accepted .answer-label {
    color: #fff;
}

.question-content {
    min-width: 0;
}

.question-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 8px;
    line-height: 1.4;
}

.question-title a {
    color: var(--text, #1a202c);
    text-decoration: none;
}

.question-title a:hover {
    color: var(--brand);
}

.solved-badge {
    color: var(--success);
    margin-right: 6px;
}

.question-excerpt {
    font-size: 0.9rem;
    color: var(--muted, #64748b);
    margin-bottom: 12px;
    line-height: 1.5;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.question-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.meta-tag {
    padding: 4px 10px;
    background: var(--bg, #f1f5f9);
    color: var(--brand);
    border-radius: 4px;
    font-size: 0.75rem;
    text-decoration: none;
}

.meta-tag:hover {
    background: var(--brand);
    color: #fff;
}

.course-badge {
    padding: 4px 10px;
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border-radius: 4px;
    font-size: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.question-author {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
}

.author-avatar {
    width: 24px;
    height: 24px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: #fff;
}

.author-name {
    color: var(--brand);
    font-weight: 500;
}

.question-time {
    color: var(--muted, #64748b);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 32px;
}

.page-link {
    padding: 10px 16px;
    background: var(--card, #fff);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 8px;
    color: var(--text, #475569);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.page-link:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.page-link.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
}

.page-numbers {
    display: flex;
    gap: 4px;
}

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--card, #fff);
    border-radius: 20px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.3s;
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border, #e2e8f0);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text, #1a202c);
}

.modal-header i {
    color: var(--brand);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--muted, #64748b);
    cursor: pointer;
    padding: 4px;
}

.modal-close:hover {
    color: var(--text, #1a202c);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border, #e2e8f0);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ==================== FORMS ==================== */
.ask-form,
.answer-form {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text, #1a202c);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 10px;
    font-size: 0.95rem;
    background: var(--card, #fff);
    color: var(--text, #1a202c);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group small {
    display: block;
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--muted, #64748b);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.ai-assist-option {
    padding: 16px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text, #1a202c);
}

.checkbox-label input {
    width: auto;
}

.checkbox-label i {
    color: var(--ai-color);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border, #e2e8f0);
}

/* Buttons */
.btn-primary {
    padding: 12px 24px;
    background: var(--brand);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--brand-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    padding: 12px 24px;
    background: var(--bg, #f1f5f9);
    color: var(--text, #475569);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--border, #e2e8f0);
}

.btn-ai {
    padding: 12px 24px;
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-ai:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

/* ==================== QUESTION PAGE ==================== */
.question-page {
    background: var(--bg, #f8fafc);
    padding: 30px 0 60px;
    min-height: 80vh;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.breadcrumb-nav a {
    color: var(--muted, #64748b);
    text-decoration: none;
}

.breadcrumb-nav a:hover {
    color: var(--brand);
}

.breadcrumb-nav span {
    color: var(--text, #1a202c);
}

.breadcrumb-nav i {
    font-size: 0.7rem;
    color: var(--muted, #94a3b8);
}

.question-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
}

/* Question Full */
.question-full {
    background: var(--card, #fff);
    border-radius: 16px;
    border: 1px solid var(--border, #e2e8f0);
    overflow: hidden;
    margin-bottom: 30px;
}

.question-header {
    padding: 24px;
    border-bottom: 1px solid var(--border, #e2e8f0);
}

.question-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text, #1a202c);
    margin: 0 0 12px;
    line-height: 1.4;
}

.question-header-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--muted, #64748b);
    flex-wrap: wrap;
}

.question-header-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.solved-indicator {
    color: var(--success);
    font-weight: 600;
}

.question-body-wrapper {
    display: flex;
    padding: 24px;
    gap: 20px;
}

/* Vote Controls */
.vote-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.vote-btn {
    width: 36px;
    height: 36px;
    background: var(--bg, #f1f5f9);
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--muted, #64748b);
    transition: all 0.2s;
}

.vote-btn:hover:not(:disabled) {
    border-color: var(--brand);
    color: var(--brand);
}

.vote-btn.active.upvote {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
}

.vote-btn.active.downvote {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

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

.vote-controls .vote-count {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text, #1a202c);
    padding: 8px 0;
}

.accepted-badge {
    width: 40px;
    height: 40px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    margin-top: 8px;
}

.accept-btn {
    width: 40px;
    height: 40px;
    background: var(--bg, #f1f5f9);
    border: 2px dashed var(--border, #e2e8f0);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted, #64748b);
    cursor: pointer;
    margin-top: 8px;
    transition: all 0.2s;
}

.accept-btn:hover {
    border-color: var(--success);
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

/* Post Content */
.question-body,
.answer-body {
    flex: 1;
    min-width: 0;
}

.post-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text, #1a202c);
    margin-bottom: 20px;
}

.post-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 0.9rem;
}

.post-content code {
    background: var(--bg, #f1f5f9);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.course-tag {
    padding: 6px 12px;
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border-radius: 6px;
    font-size: 0.85rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 16px;
    border-top: 1px solid var(--border, #e2e8f0);
    flex-wrap: wrap;
    gap: 16px;
}

.post-actions {
    display: flex;
    gap: 16px;
}

.action-link {
    background: none;
    border: none;
    color: var(--muted, #64748b);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.action-link:hover {
    color: var(--brand);
}

.post-author-card {
    background: var(--bg, #f8fafc);
    padding: 12px 16px;
    border-radius: 10px;
    text-align: right;
}

.post-author-card.ai {
    background: rgba(139, 92, 246, 0.1);
}

.author-time {
    font-size: 0.8rem;
    color: var(--muted, #64748b);
    display: block;
    margin-bottom: 8px;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: flex-end;
}

.author-info .author-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
}

.author-info .author-avatar.ai {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
}

.author-info .author-name {
    font-weight: 600;
}

/* AI Summary Box */
.ai-summary-box {
    margin: 0 24px 24px;
    padding: 20px;
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
}

.ai-summary-header {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--ai-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.ai-summary-content {
    font-size: 0.95rem;
    color: var(--text, #475569);
    line-height: 1.6;
}

/* Answers Section */
.answers-section {
    background: var(--card, #fff);
    border-radius: 16px;
    border: 1px solid var(--border, #e2e8f0);
    overflow: hidden;
}

.answers-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border, #e2e8f0);
}

.answers-header h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    color: var(--text, #1a202c);
}

.answers-sort {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--muted, #64748b);
}

.answers-sort select {
    padding: 6px 10px;
    border: 1px solid var(--border, #e2e8f0);
    border-radius: 6px;
    background: var(--card, #fff);
    color: var(--text, #1a202c);
    font-size: 0.85rem;
}

/* Answer Cards */
.answer-card {
    border-bottom: 1px solid var(--border, #e2e8f0);
}

.answer-card:last-child {
    border-bottom: none;
}

.answer-card.accepted {
    background: rgba(16, 185, 129, 0.03);
}

.answer-body-wrapper {
    display: flex;
    padding: 24px;
    gap: 20px;
}

.ai-answer-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(139, 92, 246, 0.1);
    color: var(--ai-color);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.ai-model {
    padding: 2px 8px;
    background: rgba(139, 92, 246, 0.2);
    border-radius: 4px;
    font-size: 0.75rem;
}

/* Post Answer Section */
.post-answer-section {
    padding: 24px;
    border-top: 1px solid var(--border, #e2e8f0);
}

.post-answer-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 20px;
    color: var(--text, #1a202c);
}

.login-prompt {
    text-align: center;
    padding: 32px;
    background: var(--bg, #f8fafc);
    border-radius: 12px;
}

.login-prompt p {
    margin: 0 0 16px;
    color: var(--muted, #64748b);
}

/* AI Help Panel */
.ai-help-panel {
    margin-top: 20px;
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    overflow: hidden;
}

.ai-help-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(139, 92, 246, 0.1);
}

.ai-help-header span {
    font-weight: 600;
    color: var(--ai-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-help-header button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ai-color);
    font-size: 1.1rem;
}

.ai-help-content {
    padding: 16px;
    max-height: 300px;
    overflow-y: auto;
}

.ai-help-actions {
    padding: 12px 16px;
    border-top: 1px solid rgba(139, 92, 246, 0.2);
}

/* Question Sidebar */
.question-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ai-actions-card h4 {
    margin-bottom: 16px;
}

.ai-action-btn {
    width: 100%;
    padding: 12px 14px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 10px;
    color: var(--ai-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    transition: all 0.2s;
}

.ai-action-btn:hover {
    background: rgba(139, 92, 246, 0.2);
    transform: translateX(4px);
}

.ai-action-btn:last-child {
    margin-bottom: 0;
}

/* Related Questions */
.related-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-item {
    display: block;
    padding: 10px 12px;
    background: var(--bg, #f8fafc);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
}

.related-item:hover {
    background: var(--border, #e2e8f0);
}

.related-title {
    display: block;
    font-size: 0.85rem;
    color: var(--text, #1a202c);
    margin-bottom: 4px;
    line-height: 1.4;
}

.related-meta {
    font-size: 0.75rem;
    color: var(--muted, #64748b);
}

.no-related {
    font-size: 0.85rem;
    color: var(--muted, #64748b);
    text-align: center;
    padding: 16px 0;
}

/* Stats Card */
.stats-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.stats-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border, #e2e8f0);
    font-size: 0.9rem;
}

.stats-list li:last-child {
    border-bottom: none;
}

.stats-list .stat-label {
    color: var(--muted, #64748b);
}

.stats-list .stat-value {
    color: var(--text, #1a202c);
    font-weight: 600;
}

/* AI Modal */
.ai-modal {
    max-width: 700px;
}

.ai-result {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text, #1a202c);
}

.ai-code {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

.ai-error {
    color: var(--danger);
    text-align: center;
    padding: 20px;
}

/* Loading */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border, #e2e8f0);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 12px;
}

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

.loading-placeholder {
    text-align: center;
    padding: 20px;
    color: var(--muted, #64748b);
    font-size: 0.9rem;
}

/* ==================== DARK MODE ==================== */
[data-theme="dark"] .community-main,
[data-theme="dark"] .question-page {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --border: #334155;
}

[data-theme="dark"] .search-form input,
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .course-filter,
[data-theme="dark"] .answers-sort select {
    background: var(--bg);
    color: var(--text);
    border-color: var(--border);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .community-layout {
        grid-template-columns: 1fr;
    }
    
    .community-sidebar {
        order: 2;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .ai-card {
        grid-column: span 2;
    }
    
    .question-layout {
        grid-template-columns: 1fr;
    }
    
    .question-sidebar {
        order: 2;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .community-hero {
        padding: 40px 0;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .community-sidebar {
        grid-template-columns: 1fr;
    }
    
    .ai-card {
        grid-column: span 1;
    }
    
    .question-card {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .question-votes,
    .question-answers,
    .question-views {
        display: inline-block;
        padding: 4px 12px;
        background: var(--bg, #f8fafc);
        border-radius: 6px;
    }
    
    .question-card > div:first-child {
        display: flex;
        gap: 12px;
        grid-column: span 1;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .question-sidebar {
        grid-template-columns: 1fr;
    }
    
    .question-body-wrapper,
    .answer-body-wrapper {
        flex-direction: column;
        gap: 16px;
    }
    
    .vote-controls {
        flex-direction: row;
        justify-content: flex-start;
    }
    
    .accepted-badge,
    .accept-btn {
        margin-top: 0;
        margin-left: 8px;
    }
    
    .post-footer {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-author-card {
        width: 100%;
        text-align: left;
    }
    
    .author-info {
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {
    .pagination {
        flex-wrap: wrap;
    }
    
    .page-numbers {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 8px;
    }
}