/* Discussion Forum Page Styles */

:root {
    --discussion-primary: #0891b2;
    --discussion-dark: #0e7490;
    --discussion-light: #e0f2fe;
}

/* Page Header */
.page-header {
    margin-top: 140px;
    background: linear-gradient(135deg, var(--discussion-primary) 0%, var(--discussion-dark) 100%);
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: 2.5rem;
    color: var(--white);
    font-weight: 700;
    animation: fadeInDown 1s ease;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 1s ease;
}

/* Forum Section */
.forum-section {
    padding: 4rem 2rem;
    background: var(--light-gray);
    min-height: calc(100vh - 400px);
}

/* Forum Header */
.forum-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    animation: fadeInUp 0.6s ease;
}

.forum-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--discussion-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-top: 0.25rem;
}

.new-post-btn {
    background: linear-gradient(135deg, var(--discussion-primary) 0%, var(--discussion-dark) 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.3);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.new-post-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.4);
}

.btn-icon {
    font-size: 1.5rem;
    line-height: 1;
}

/* Categories Section */
.categories-section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease;
}

.section-title {
    font-size: 1.8rem;
    color: var(--dark-brown);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: var(--discussion-primary);
}

.category-card.active {
    border-color: var(--discussion-primary);
    background: var(--discussion-light);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.category-card h3 {
    font-size: 1.1rem;
    color: var(--dark-brown);
    margin-bottom: 0.5rem;
}

.category-count {
    font-size: 0.85rem;
    color: var(--dark-gray);
}

/* Discussions Section */
.discussions-section {
    animation: fadeInUp 1s ease;
}

.discussions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.filter-controls {
    display: flex;
    gap: 1rem;
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    background: white;
    transition: all 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--discussion-primary);
}

/* Discussion Item */
.discussion-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    cursor: pointer;
    animation: slideIn 0.5s ease;
}

.discussion-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.12);
}

.discussion-header-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.discussion-main {
    flex: 1;
}

.discussion-title {
    font-size: 1.3rem;
    color: var(--dark-brown);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.discussion-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--dark-gray);
    margin-bottom: 0.75rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.discussion-excerpt {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.discussion-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--light-gray);
}

.discussion-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--discussion-light);
    color: var(--discussion-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.discussion-stats {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    animation: fadeIn 0.3s ease;
    overflow-y: auto;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-content {
    background-color: white;
    border-radius: 15px;
    width: 100%;
    max-width: 700px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.3);
    animation: slideDown 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid var(--light-gray);
}

.modal-header h2 {
    color: var(--dark-brown);
    font-size: 1.8rem;
}

.close-modal {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--dark-gray);
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close-modal:hover {
    color: var(--discussion-primary);
}

.new-post-form {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.95rem;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.required {
    color: #e74c3c;
}

.form-group input[type="text"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--discussion-primary);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.btn-cancel,
.btn-submit {
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-cancel {
    background: var(--light-gray);
    color: var(--dark-gray);
}

.btn-cancel:hover {
    background: #ddd;
}

.btn-submit {
    background: linear-gradient(135deg, var(--discussion-primary) 0%, var(--discussion-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.3);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.4);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .page-header {
        margin-top: 80px;
        padding: 2rem 1rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .forum-header {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .forum-stats {
        width: 100%;
        justify-content: space-around;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .discussions-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .modal-content {
        margin: 1rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .btn-cancel,
    .btn-submit {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .forum-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Discussion Detail Modal */
.modal-large {
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-body {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.detail-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-top: 0.5rem;
}

.detail-category {
    background: var(--discussion-light);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    color: var(--discussion-dark);
    font-weight: 600;
}

.discussion-detail-content {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.discussion-detail-content p {
    color: var(--dark-gray);
    margin: 0;
}

/* Replies Section */
.replies-section {
    margin-bottom: 2rem;
}

.replies-title {
    font-size: 1.5rem;
    color: var(--dark-brown);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-gray);
}

.replies-container {
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.replies-container::-webkit-scrollbar {
    width: 8px;
}

.replies-container::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 4px;
}

.replies-container::-webkit-scrollbar-thumb {
    background: var(--discussion-primary);
    border-radius: 4px;
}

.no-replies {
    text-align: center;
    color: var(--dark-gray);
    padding: 2rem;
    font-style: italic;
}

.reply-item {
    background: white;
    border: 2px solid var(--light-gray);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.3s ease;
}

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

.reply-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    font-size: 1.5rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    color: var(--dark-brown);
    font-size: 0.95rem;
}

.reply-timestamp {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.reply-like-btn {
    background: none;
    border: 2px solid var(--light-gray);
    padding: 0.4rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.reply-like-btn:hover {
    border-color: var(--discussion-primary);
    background: var(--discussion-light);
}

.reply-content {
    color: var(--dark-gray);
    line-height: 1.7;
    padding-left: 2.25rem;
}

.reply-content strong {
    color: var(--dark-brown);
    font-weight: 600;
}

.reply-content em {
    font-style: italic;
    color: var(--discussion-dark);
}

/* Reply Form Section */
.reply-form-section {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.reply-form-title {
    font-size: 1.3rem;
    color: var(--dark-brown);
    margin-bottom: 1rem;
}

.reply-form .form-group {
    margin-bottom: 1rem;
}

/* Formatting Toolbar */
.formatting-toolbar {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem;
    background: white;
    border: 2px solid #ddd;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    flex-wrap: wrap;
}

.format-btn,
.emoji-btn {
    background: white;
    border: 1px solid #ddd;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.format-btn:hover,
.emoji-btn:hover {
    background: var(--discussion-light);
    border-color: var(--discussion-primary);
    transform: translateY(-2px);
}

.format-btn strong,
.format-btn em {
    font-size: 1.1rem;
}

.emoji-btn {
    font-size: 1.2rem;
}

.toolbar-divider {
    width: 1px;
    background: #ddd;
    margin: 0 0.25rem;
}

.reply-form textarea {
    border-radius: 0 0 8px 8px;
    border-top: none;
}

.format-hint {
    font-size: 0.85rem;
    color: var(--dark-gray);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Responsive adjustments for detail modal */
@media (max-width: 768px) {
    .modal-large {
        max-width: 100%;
        margin: 0;
        border-radius: 0;
        max-height: 100vh;
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .detail-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .replies-container {
        max-height: 300px;
    }
    
    .formatting-toolbar {
        gap: 0.25rem;
        padding: 0.5rem;
    }
    
    .format-btn,
    .emoji-btn {
        min-width: 32px;
        height: 32px;
        padding: 0.4rem;
        font-size: 0.9rem;
    }
    
    .reply-content {
        padding-left: 0;
        margin-top: 0.5rem;
    }
}