/* ==========================================================================
   CONTENT STYLES - Card / Tag / Pagination / Vote / Comment / Profile
   Dùng chung bảng màu với style.css (:root đã khai báo ở style.css)
   ========================================================================== */

.section-title {
    font-weight: 700;
    color: var(--dark-color);
    border-left: 4px solid var(--primary-color);
    padding-left: 12px;
    margin-bottom: 20px;
}

/* --- Card dùng cho Giáo án / Đề thi --- */
.content-card {
    position: relative;
    background: var(--light-color);
    border: 1px solid var(--soft-blue-bg);
    border-radius: 10px;
    overflow: hidden;
    height: 100%;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

    .content-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px rgba(0, 141, 218, 0.15);
    }

    .content-card .card-thumb {
        width: 100%;
        height: 160px;
        object-fit: cover;
        background-color: var(--soft-blue-bg);
    }

    .content-card .card-body {
        padding: 15px;
    }

    .content-card .card-title {
        font-weight: 700;
        font-size: 16px;
        color: var(--dark-color);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 6px;
    }

        .content-card .card-title:hover {
            color: var(--primary-color);
        }

    .content-card .card-desc {
        font-size: 13px;
        color: #555;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 10px;
    }

    .content-card .card-meta {
        font-size: 12px;
        color: #777;
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: 1px dashed var(--soft-blue-bg);
        padding-top: 10px;
    }

.badge-filetype {
    background-color: var(--accent-blue);
    color: var(--light-color);
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
    text-transform: uppercase;
}

.tag-pill {
    display: inline-block;
    background-color: var(--cream-yellow);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
    margin: 0 6px 6px 0;
}

/* --- Phân trang --- */
.pagination-wrap {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 30px;
}

    .pagination-wrap a,
    .pagination-wrap span {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 38px;
        height: 38px;
        padding: 0 10px;
        border-radius: 6px;
        border: 1px solid var(--soft-blue-bg);
        color: var(--dark-color);
        font-weight: 600;
        font-size: 14px;
    }

        .pagination-wrap a:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
            border-color: var(--primary-color);
        }

    .pagination-wrap .active span {
        background-color: var(--primary-color);
        color: var(--light-color);
        border-color: var(--primary-color);
    }

    .pagination-wrap .disabled span {
        opacity: 0.4;
    }

/* --- Vote --- */
.vote-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--soft-blue-bg);
    border-radius: 10px;
    padding: 12px 20px;
    width: fit-content;
}

    .vote-box .vote-btn {
        background: var(--light-color);
        border: 1px solid var(--primary-color);
        color: var(--primary-color);
        width: 38px;
        height: 38px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

        .vote-box .vote-btn:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
        }

        .vote-box .vote-btn.active {
            background-color: var(--primary-color);
            color: var(--light-color);
        }

    .vote-box .vote-total {
        font-size: 20px;
        font-weight: 700;
        color: var(--dark-color);
        min-width: 40px;
        text-align: center;
    }

/* --- File download block (row3 hiển thị giữa màn hình) --- */
.file-download-block {
    text-align: center;
    background-color: var(--cream-yellow);
    border: 2px dashed var(--accent-blue);
    border-radius: 12px;
    padding: 30px;
    margin: 20px 0;
}

    .file-download-block .btn-download {
        background-color: var(--primary-color);
        color: var(--light-color);
        font-weight: 700;
        padding: 12px 30px;
        border-radius: 25px;
        display: inline-block;
        margin-top: 12px;
    }

        .file-download-block .btn-download:hover {
            background-color: var(--accent-blue);
        }

/* ==========================================================================
   NÚT HÀNH ĐỘNG DÙNG CHUNG (form, hồ sơ) - .btn-app-*
   ========================================================================== */
.btn-app {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 15px;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
    line-height: 1.2;
}

.btn-app-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-blue));
    color: var(--light-color);
    box-shadow: 0 4px 14px rgba(0, 141, 218, 0.3);
}

    .btn-app-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(0, 141, 218, 0.4);
        color: var(--light-color);
    }

    .btn-app-primary:active {
        transform: translateY(0);
        box-shadow: 0 3px 8px rgba(0, 141, 218, 0.3);
    }

    .btn-app-primary:disabled {
        opacity: 0.6;
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
    }

.btn-app-outline {
    background: var(--light-color);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

    .btn-app-outline:hover {
        background: var(--primary-color);
        color: var(--light-color);
        transform: translateY(-2px);
    }

    .btn-app-outline.is-active {
        background: var(--soft-blue-bg);
        color: var(--primary-color);
        border-color: var(--soft-blue-bg);
    }

.btn-app-danger-outline {
    background: var(--light-color);
    color: #dc3545;
    border-color: #f1c0c6;
}

    .btn-app-danger-outline:hover {
        background: #dc3545;
        color: var(--light-color);
        border-color: #dc3545;
    }

.btn-app-block {
    width: 100%;
}

.btn-app-sm {
    padding: 9px 20px;
    font-size: 13px;
    border-radius: 22px;
}

/* --- Logo chữ (GiaoAnGiaoVien) - dạng phẳng, không nền, không đổ bóng --- */
.logo-text {
    display: inline-block;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 0.3px;
    color: var(--primary-color);
    text-decoration: none;
    line-height: 1;
}

@media (max-width: 576px) {
    .logo-text {
        font-size: 22px;
    }
}

/* --- Xem trước PDF --- */
.pdf-preview-frame {
    width: 100%;
    height: 600px;
    border: 1px solid var(--soft-blue-bg);
    border-radius: 10px;
    background-color: #f5f5f5;
}

@media (max-width: 768px) {
    .pdf-preview-frame {
        height: 400px;
    }
}

/* --- Bình luận --- */
.comment-item {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid var(--soft-blue-bg);
}

    .comment-item .avatar {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        object-fit: cover;
        background-color: var(--soft-blue-bg);
        flex-shrink: 0;
    }

    .comment-item .comment-author {
        font-weight: 700;
        font-size: 14px;
        color: var(--dark-color);
    }

    .comment-item .comment-time {
        font-size: 12px;
        color: #999;
    }

    .comment-item .comment-content {
        font-size: 14px;
        color: #333;
        margin-top: 4px;
    }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #888;
}

/* --- Vote mini + Trả lời cho từng bình luận --- */
.comment-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
}

.comment-vote-btn {
    background: var(--light-color);
    border: 1px solid var(--soft-blue-bg);
    color: #888;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
}

    .comment-vote-btn:hover,
    .comment-vote-btn.active {
        background-color: var(--primary-color);
        color: var(--light-color);
        border-color: var(--primary-color);
    }

.comment-vote-total {
    font-size: 13px;
    font-weight: 700;
    color: var(--dark-color);
    min-width: 18px;
    text-align: center;
}

.comment-reply-toggle {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    padding: 0;
}

    .comment-reply-toggle:hover {
        text-decoration: underline;
    }

.reply-form-container textarea {
    font-size: 13px;
}

.view-replies-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-color);
}

.load-more-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    padding: 8px 0;
    cursor: pointer;
}

    .load-more-link:hover {
        text-decoration: underline;
    }

/* --- Thụt lề cho reply (chỉ 1 layer) --- */
.reply-list .comment-item.comment-reply {
    margin-left: 54px;
    padding: 10px 0;
    border-bottom: none;
    border-top: 1px dashed var(--soft-blue-bg);
}

    .reply-list .comment-item.comment-reply .avatar {
        width: 32px;
        height: 32px;
    }

.empty-state i {
    font-size: 40px;
    color: var(--light-blue);
    margin-bottom: 15px;
}

/* --- Hồ sơ người dùng --- */
.profile-cover {
    height: 220px;
    background-color: var(--soft-blue-bg);
    background-size: cover;
    background-position: center;
    border-radius: 12px 12px 0 0;
}

.profile-header {
    background-color: var(--light-color);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 0 25px 20px 25px;
    margin-bottom: 30px;
}

.profile-avatar {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: 4px solid var(--light-color);
    object-fit: cover;
    background-color: var(--soft-blue-bg);
    margin-top: -55px;
}

.profile-tabs {
    border-bottom: 2px solid var(--soft-blue-bg);
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

    .profile-tabs a {
        padding: 10px 18px;
        font-weight: 600;
        color: #666;
        border-bottom: 3px solid transparent;
    }

        .profile-tabs a.active,
        .profile-tabs a:hover {
            color: var(--primary-color);
            border-color: var(--primary-color);
        }

.link-accent {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

    .link-accent:hover {
        color: var(--accent-blue);
        text-decoration: underline;
    }