/* ===================================
   MODERN FORUM DESIGN
   Inspired by Discourse, Stack Exchange, Reddit
   =================================== */

/* Container */
.container-forum {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================================
   FORUM HEADER
   =================================== */

.forum-header {
    margin-bottom: 32px;
}

.forum-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    gap: 20px;
}

.forum-title-section {
    flex: 1;
}

.forum-page-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.forum-page-title i {
    color: var(--primary-color);
}

.forum-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

.btn-new-post {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
}

.btn-new-post:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
}

/* Forum Controls */
.forum-controls {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.forum-search-and-filter {
    display: flex;
    gap: 12px;
    align-items: center;
    flex: 1;
    min-width: 300px;
}

.forum-categories-toggle-btn {
    display: none;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s;
    flex-shrink: 0;
}

.forum-categories-toggle-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-dark);
}

.forum-categories-toggle-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.forum-search-bar {
    position: relative;
    flex: 1;
}

.forum-search-bar i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 14px;
}

.forum-search-bar input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s;
}

.forum-search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-dark);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.1);
}

/* Forum Sort Filters - Styled like Theme Toggle */
.forum-sort-filters {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

[data-theme="light"] .forum-sort-filters {
    background: rgba(226, 232, 240, 0.6);
    border: 2px solid rgba(148, 163, 184, 0.4);
}

.forum-sort-btn {
    min-width: 32px;
    height: 32px;
    padding: 0 12px;
    border-radius: 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    position: relative;
}

.forum-sort-btn:hover {
    color: var(--text-primary);
    transform: scale(1.05);
}

.forum-sort-btn.active {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 2px 8px rgba(168, 85, 247, 0.4);
}

.forum-sort-btn i {
    font-size: 13px;
    transition: transform 0.3s ease;
}

.forum-sort-btn:hover i {
    transform: scale(1.1);
}

.forum-sort-btn.active:hover {
    transform: scale(1);
}

.forum-sort-btn.active:hover i {
    transform: scale(1);
}

/* ===================================
   FORUM LAYOUT
   =================================== */

.forum-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 32px;
}

/* ===================================
   SIDEBAR
   =================================== */

.forum-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.forum-sidebar-header {
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.forum-sidebar-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.forum-sidebar-title i {
    font-size: 13px;
}

/* Category List */
.forum-category-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.forum-category-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    text-align: left;
    width: 100%;
    position: relative;
}

.forum-category-item:hover {
    background: var(--bg-light);
    transform: translateX(4px);
}

.forum-category-item.active {
    background: var(--primary-color);
}

.forum-category-item.active .category-name,
.forum-category-item.active .category-count {
    color: white;
}

.forum-category-item.active .category-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.category-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s;
}

.category-icon i {
    font-size: 16px;
    color: var(--primary-color);
}

.category-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.category-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.category-count {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-dark);
    padding: 4px 10px;
    border-radius: 12px;
    min-width: 32px;
    text-align: center;
}

/* Stats Widget */
.forum-stats-widget {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.widget-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin: 0 0 12px 0;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-label i {
    font-size: 12px;
    color: var(--primary-color);
    width: 14px;
}

.stat-value {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ===================================
   FORUM MAIN CONTENT
   =================================== */

.forum-main {
    min-width: 0;
}

/* Breadcrumb */
.forum-breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.forum-breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
}

.forum-breadcrumb a:hover {
    color: var(--primary-light);
}

.forum-breadcrumb i.fa-chevron-right {
    color: var(--text-secondary);
    font-size: 10px;
}

.forum-breadcrumb span {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===================================
   MODERN POSTS GRID
   =================================== */

.forum-posts-modern {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Post Card */
.forum-post-card-modern {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.forum-post-card-modern::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s;
}

.forum-post-card-modern:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.forum-post-card-modern:hover::before {
    opacity: 1;
}

.forum-post-card-modern.pinned {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, var(--bg-light) 100%);
    border-color: var(--primary-color);
}

.forum-post-card-modern.pinned::before {
    opacity: 1;
}

/* Post Layout */
.post-card-layout {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    align-items: start;
}

/* Avatar Section */
.post-avatar {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

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

.post-avatar i {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-secondary);
}

.forum-post-card-modern:hover .post-avatar {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

/* Post Content Section */
.post-content-section {
    min-width: 0;
}

.post-header-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.post-title-modern {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
    flex: 1;
}

.post-badges {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
}

.post-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.post-badge.pinned {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.post-badge.hot {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.post-badge.solved {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.post-badge.new {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.post-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-secondary);
}

.post-author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.post-author-name:hover {
    color: var(--primary-color);
}

.post-meta-divider {
    color: var(--border-color);
}

.post-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--bg-dark);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
    transition: all 0.3s;
}

.post-category-badge:hover {
    background: var(--primary-color);
    color: white;
}

.post-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Post Stats Section */
.post-stats-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-end;
    min-width: 160px;
}

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

.engagement-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    background: var(--bg-dark);
    border-radius: 8px;
    min-width: 60px;
}

.engagement-stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.engagement-stat-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.engagement-stat.highlight .engagement-stat-value {
    color: var(--primary-color);
}

.post-last-activity {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: right;
    display: flex;
    align-items: center;
    gap: 6px;
}

.post-last-activity i {
    font-size: 11px;
}

/* Last Comment Preview */
.post-last-comment-preview {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--bg-dark);
    padding: 18px 24px;
    border-radius: 0;
    border-left: 3px solid var(--primary-color);
    margin-left: -20px;
    margin-right: -20px;
    margin-bottom: -20px;
    margin-top: 16px;
}

.last-comment-avatar {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
}

.last-comment-avatar img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.last-comment-avatar i {
    font-size: 28px;
    color: var(--text-secondary);
}

.last-comment-details {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.last-comment-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.last-comment-author {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.last-comment-time {
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.last-comment-snippet {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1200px) {
    .forum-layout {
        grid-template-columns: 260px 1fr;
        gap: 24px;
    }

    .forum-sidebar {
        top: 90px;
    }
}

@media (max-width: 992px) {
    .forum-page-title {
        font-size: 28px;
    }

    .forum-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .forum-search-and-filter {
        min-width: 100%;
    }

    /* Show hamburger toggle button on mobile */
    .forum-categories-toggle-btn {
        display: flex;
    }

    .forum-sort-filters {
        justify-content: center;
        flex-wrap: wrap;
    }

    .forum-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .forum-sidebar {
        position: static;
        max-height: none;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 0;
        background: var(--bg-light);
        overflow: hidden;
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
    }

    /* Completely hide sidebar when collapsed on mobile */
    .forum-sidebar.collapsed {
        display: none !important;
    }
}

/* On desktop, always show forum sidebar regardless of collapsed class */
@media (min-width: 769px) {
    #forumPage .forum-sidebar.collapsed {
        display: flex !important;
        flex-direction: column;
    }
}

/* Continue mobile styles */
@media (max-width: 768px) {
    /* Collapsible categories on mobile */
    .forum-sidebar-header,
    .forum-category-list,
    .forum-stats-widget {
        max-height: 2000px;
        overflow: hidden;
        opacity: 1;
    }

    .forum-sidebar-header {
        padding: 16px;
    }

    .forum-category-list,
    .forum-stats-widget {
        padding: 0 16px 16px 16px;
    }

    .post-stats-section {
        flex-direction: row;
        align-items: center;
        width: 100%;
        justify-content: space-between;
    }

    .post-card-layout {
        grid-template-columns: auto 1fr;
    }

    .post-stats-section {
        grid-column: 2;
        margin-top: 12px;
    }
}

@media (max-width: 768px) {
    .forum-header-top {
        flex-direction: column;
        align-items: stretch;
    }

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

    .forum-page-title {
        font-size: 24px;
    }

    .forum-subtitle {
        font-size: 14px;
    }

    /* Compact sort buttons on mobile - text only (small) */
    .forum-sort-filters {
        gap: 2px;
        padding: 3px;
        width: 100%;
        max-width: 100%;
    }

    .forum-sort-btn {
        min-width: auto;
        width: auto;
        height: 32px;
        padding: 0 10px;
        border-radius: 16px;
        font-size: 11px;
        flex: 1;
    }

    /* Hide icons on mobile, show only text */
    .forum-sort-btn i {
        display: none;
    }

    /* Mobile post card layout improvements */
    .forum-post-card-modern {
        padding: 16px;
        border-radius: 12px;
    }

    .post-card-layout {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .post-avatar {
        display: none;
    }

    .post-content-section {
        order: 1;
    }

    .post-stats-section {
        order: 2;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        min-width: auto;
        padding-top: 12px;
        border-top: 1px solid var(--border-color);
    }

    .post-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 6px;
    }

    .post-title-modern {
        font-size: 16px;
        line-height: 1.3;
        width: 100%;
    }

    .post-badges {
        order: -1;
    }

    .post-meta-row {
        font-size: 12px;
        margin-bottom: 8px;
        flex-wrap: wrap;
    }

    .post-excerpt {
        font-size: 13px;
        line-height: 1.5;
        -webkit-line-clamp: 2;
    }

    .post-engagement-stats {
        gap: 8px;
        flex-shrink: 0;
    }

    .engagement-stat {
        min-width: auto;
        padding: 6px 12px;
        background: transparent;
        border: 1px solid var(--border-color);
    }

    .engagement-stat-value {
        font-size: 15px;
    }

    .engagement-stat-label {
        font-size: 9px;
    }

    .post-last-activity {
        font-size: 11px;
        white-space: nowrap;
    }

    .post-last-comment-preview {
        padding: 16px 20px;
        margin-left: -16px;
        margin-right: -16px;
        margin-bottom: -16px;
        margin-top: 12px;
    }

    .last-comment-snippet {
        font-size: 11px;
        -webkit-line-clamp: 1;
    }

    .post-category-badge {
        font-size: 11px;
        padding: 3px 8px;
    }

    .post-badge {
        font-size: 10px;
        padding: 3px 8px;
    }
}

@media (max-width: 480px) {
    .container-forum {
        padding: 0 12px;
    }

    .forum-header {
        margin-bottom: 20px;
    }

    .forum-page-title {
        font-size: 20px;
    }

    /* Even more compact on small mobile */
    .forum-sort-filters {
        gap: 2px;
        padding: 3px;
        width: 100%;
    }

    .forum-sort-btn {
        min-width: auto;
        width: auto;
        height: 28px;
        padding: 0 8px;
        border-radius: 14px;
        font-size: 10px;
        flex: 1;
    }

    .forum-sort-btn i {
        display: none;
    }

    /* Extra small mobile optimizations */
    .post-title-modern {
        font-size: 15px;
    }

    .post-excerpt {
        font-size: 12px;
        -webkit-line-clamp: 2;
    }

    .forum-post-card-modern {
        padding: 12px;
    }

    .engagement-stat {
        padding: 4px 10px;
    }

    .engagement-stat-value {
        font-size: 14px;
    }

    .engagement-stat-label {
        font-size: 8px;
    }

    .post-last-activity {
        font-size: 10px;
    }

    .post-last-comment-preview {
        padding: 14px 16px;
        margin-left: -12px;
        margin-right: -12px;
        margin-bottom: -12px;
        margin-top: 10px;
        gap: 8px;
    }

    .last-comment-avatar {
        width: 24px;
        height: 24px;
    }

    .last-comment-avatar img {
        width: 24px;
        height: 24px;
    }

    .last-comment-avatar i {
        font-size: 24px;
    }

    .last-comment-author {
        font-size: 11px;
    }

    .last-comment-time {
        font-size: 10px;
    }

    .last-comment-snippet {
        font-size: 11px;
        line-height: 1.3;
    }

    .post-meta-row {
        font-size: 11px;
    }
}

/* ===================================
   DARK/LIGHT THEME ADJUSTMENTS
   =================================== */

[data-theme="light"] .forum-post-card-modern {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .forum-post-card-modern:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .forum-sidebar {
    background: white;
}

[data-theme="light"] .forum-stats-widget {
    background: #f8f9fa;
}

[data-theme="light"] .category-icon {
    background: #f0f0f0;
}

[data-theme="light"] .engagement-stat {
    background: #f8f9fa;
}

[data-theme="light"] .forum-sort-filters {
    background: #f8f9fa;
}

[data-theme="light"] .post-last-comment-preview {
    background: #f8f9fa;
    border-left-color: #8b5cf6;
}

/* ===================================
   LOADING & EMPTY STATES
   =================================== */

.forum-empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-light);
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    margin: 20px 0;
}

.forum-empty-state i {
    font-size: 64px;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 20px;
}

.forum-empty-state h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.forum-empty-state p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0 0 24px 0;
}